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Thermo Scientific

NESLAB RTE Series

Refrigerated Bath

Thermo Scientific Manual P/N U00694 Rev. 03/06/07

Installation

Operation

Basic Maintenance
Thermo Fisher Scientific

25 Nimble Hill Road

Newington, NH 03801

Tel : (800) 258-0830 or

(603) 436-9444

Fax : (603) 436-8411

www.thermo.com/tc

Statement of Copyright

Copyright © 2007 Thermo Fisher Scientific. All rights reserved.

This manual is copyrighted by Thermo Fisher Scientific.

Users are forbidden to reproduce, republish, redistribute, or resell any materials from this manual

in either machine-readable form or any other form.

Sales, Service, and Customer Support

25 Nimble Hill Road

Newington, NH 03801

Tel: (800) 258-0830

Sales: 8:00 am to 5:00 pm

Service and Support: 8:00 am to 6:00 pm

Monday through Friday (Eastern Time)

Fax: (603) 436-8411

service.tc.us@thermofisher.com

Dieselstrasse 4

D-76227 Karlsruhe, Germany

Tel : +49 (0) 721 4094 444

Fax : +49 (0) 721 4094 300

Building 6, No. 27

Xin Jinqiao Rd., Shanghai 201206

Tel : +86(21) 68654588

Fax : +86(21) 64457830

info. china@thermofisher.com
- 1 -

Table of Contents

Preface

Compliance .............................................................................................................. 2

WEEE/RoHS............................................................................................................. 2

Unpacking ................................................................................................................ 2

After-sale Support.................................................................................................... 3

Warranty................................................................................................................... 3

Feedback ................................................................................................................. 3

Section I Safety

Warnings .................................................................................................................. 4

Section II General Information

Quick Reference Operating Procedures................................................................. 6

Description ............................................................................................................... 7

Specifications ........................................................................................................... 7

Section III Installation and Operation

Site ......................................................................................................................... 11

Electrical Requirements ......................................................................................... 12

Plumbing Requirements ........................................................................................ 14

Fluids ..................................................................................................................... 16

Filling Requirements .............................................................................................. 16

Controller (Digital One/Digital Plus) ...................................................................... 17

Start Up/Shut Down ................................................................................................ 19

Setup/Tuning Loop ................................................................................................ 21

Controller (Digital Plus) ......................................................................................... 22

Computer Setup Loop .......................................................................................... 24

Timer Setup Loop .................................................................................................. 25

Offset Setup Loop.................................................................................................. 26

Analog A I/O Port - Optional................................................................................... 27

High Temperature Cutouts..................................................................................... 28

Nitrogen Purge ....................................................................................................... 29

Accessories ............................................................................................................ 29

Section IV Basic Maintenance

Reservoir Fluid ...................................................................................................... 33

Reservoir Cleaning ................................................................................................ 33

Algae ...................................................................................................................... 33

Condenser Cleaning.............................................................................................. 33

Internal Temperature Sensor (rtd1) Calibration .................................................... 34

External Temperature Sensor (rtd2) Calibration ................................................... 35

Optional Analog Port/Calibration - Optional .......................................................... 36

Section V Troubleshooting

Error Codes ........................................................................................................... 37

External Sensor Connector ................................................................................... 38

Checklist................................................................................................................. 39

Service Assistance ................................................................................................. 40

PID Values .............................................................................................................. 41

BOM Decoder ........................................................................................................ 41

Displaying Software Version Number .................................................................... 42

Appendix A Fluids

Appendix B NC Serial Communications Protocol

Appendix C International Quick Reference Operating Procedures

WARRANTY
- 2 -

Preface

Compliance

Listed to:

UL 61010-1 2nd Edition

CSA C22.2 #61010.1 2nd Edition

Products tested and found to be in compliance with the requirements defined in

the EMC standards defined by 89/336/EEC as well as Low Voltage Directive

(LVD) 73/23/EEC can be identified by the CE Mark on the rear of the unit. The

testing has demonstrated compliance with the following directives:

LVD, 73/23/EEC Complies with IEC/EN61010-1

EMC, 89/336/EEC IEC/EN61326-1

For any additional information, refer to the Declaration of Conformity that

shipped with the unit.

WEEE/RoHS

This product is required to comply with the European Union’s Waste Electrical

& Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the

following symbol:

Thermo Fisher Scientific has contracted with one or more recycling/disposal

companies in each EU Member State, and this product should be disposed of or

recycled through them. Further information on Thermo Fisher Scientific’s

compliance with these Directives, the recyclers in your country, and information

on Thermo Scientific products which may assist the detection of substances

subject to the RoHS Directive are available at: www.thermo.com/WEEERoHS

Unpacking

Retain all cartons and packing material until the unit is operated and found to

be in good condition. If the unit shows external or internal damage contact the

transportation company and file a damage claim. Under ICC regulations, this is

your responsibility.

Out of Box Failure

An Out of Box Failure is defined as any product that fails to operate in conformance with sellers published specifications at initial power up. The unit must

be installed in accordance with manufacturer's recommended operating

conditions within 30 days of shipment from the seller.

Any product meeting the definition of an Out of Box Failure must be packed and

shipped back in the original packaging to Thermo Fisher Scientific for replacement with a new unit; Seller to pay the cost of shipping. Customer must receive

a Return Material Authorization (RMA) from Thermo Fisher prior to shipping the

unit.
- 3 -

After-sale Support

Thermo Fisher Scientific is committed to customer service both during and

after the sale. If you have questions concerning the unit operation, contact our

Sales Department. If your unit fails to operate properly, or if you have questions

concerning spare parts or Service Contracts, contact our Service Department.

See inside front cover for contact information.

Before calling, please obtain the following information:

- unit BOM number_________________________________

- unit serial number ________________________________

- unit software version ______________________________

- voltage of power source ____________________________

The unit’s BOM number and serial number are printed on the name plate label

located on the rear of the unit. See page 41 for instructions on how to decode

your unit's BOM number. See page 42 for instructions on how to display the

software version.

Warranty

Thermo Scientific NESLAB RTE units have a warranty against defective parts

and workmanship for 24 months from date of shipment. See back page for

more details.

Feedback

We appreciate any feedback you can give us on this manual. Please e-mail us

at neslabmanuals@thermofisher.com. Be sure to include the manual part

number and the revision date listed on the front cover.

BOM#: XXXXXXXXXXXX

S/N: XXXXXXXXX

XXX VOLT XX HZ X PH X.X AMP

R134A X.XOZ HIGH XXX PSI LOW XXXPSIG
- 4 -

Section I Safety

Warnings

Warnings are posted throughout the manual. These warnings are designated

by an exclamation mark inside an equilateral triangle and text highlighted in

bold. Read and follow these important instructions. Failure to observe these

instructions can result in permanent damage to the unit, significant property

damage, or personal injury or death.

The lightning flash with arrow symbol, within an equilateral triangle, is intended

to alert the user to the presence of non-insulated "dangerous voltage" within

the unit's enclosure. The voltage may be of significant magnitude to constitute

a risk of electrical shock.

This label, engraved into the front of the tank lip, indicates the presence of hot

surfaces.

Make sure you read and understand all instructions and safety precautions

listed in this manual before installing or operating your unit. If you have any

questions concerning the operation of your unit or the information in this

manual, contact our Sales Department.

Performance of installation, operation, or maintenance procedures

other than those described in this manual may result in a hazardous

situation and may void the manufacturer's warranty.

Transport the unit with care. Sudden jolts or drops can damage the

unit. The units weigh approximately: RTE 7, 60 pounds (27 kilograms);

RTE 10, 68 pounds (31 kilograms); RTE 17, 71 pounds (32 kilograms); RTE

740, 87 pounds (39 kilograms). Units should be transported with equipment designed to lift these weights.

Observe all warning labels.

Never remove warning labels.

Never operate damaged or leaking equipment.

Never operate the unit without bath fluid in the bath.

The user is responsible for the fluid used. Never use pure ethylene

glycol as a bath fluid, the flash point of 100% ethylene glycol is 111°C.

100% ethylene glycol may produce flammable vapors that can be

ignited by an open flame or an ignition source. When mixed with

water, ethylene glycol is not flammable. Also, at high temperatures

pure ethylene glycol may produce hazardous vapors.

Always turn off the unit and disconnect the line cord from the power

source before performing any service or maintenance procedures, or

before moving the unit.

Always empty the bath before moving the unit.

Never operate equipment with damaged line cords.

Refer service and repairs to a qualified technician.
- 5 -

Circuit Breaker(s).

Reservoir. See page 16.

Controller. See page 17.

Condenser Access Panel.

See page 33.

Section II General Information

Indicates refrigeration

system status. See

page 17.

Indicates the controller is

displaying the setpoint. Press

the arrow buttons to change the

value. See page 18.

Indicates the controller is

displaying the unit's low

temperature alarm setpoint.

Press the arrow buttons to

change the value. See page 18.

Indicates the controller is displaying

the high temperature alarm

setpoint. Press the arrow buttons

to change the value. See page 18.

Press to select the serial

communication mode.

See page 22. Digital Plus

controller only.

Press to change the

displayed value. See

page 17.

Press to start/stop the

unit. See page 17.

Press to mute the alarm. See page

22. Digital Plus controller only.

Press to sequence

through the three indicators

and accept the displayed

value. See page 17.

NOTE: None of the three

setpoint indicators are

visible unless this key is

pressed.

Indicates heater status.

See page 17.

Press to select external

sensor. See page 22. Digital

Plus controller only.

Press to select the timer

function. See page 23

Digital Plus controller

only.

Press to select the

temperature offset

mode. See page 23.

Digital Plus controller only.

1/8"OD Autorefill fluid

connection. See page 29.

 1/4" MPT Pumping

Return Connection. See

page 14.

Optional External Sensor

Connector. Digital Plus

controller only. See page 38.

1/*4" MPT Pumping

Supply Connection. See

page 14.

RS-232/RS-485

connections. See

Appendix B. Digital

Plus controller only.

Power connection.

See page 12.

Drain. See page 14.

High Temperature Cutout.

See page 28.

1/8"OD N2 Nitrogen

Purge. See page 29.

General Information

Autorefill connection.

See page 29.

Analog Output

Connector. Digital

Plus controller only.

See page 27.
- 6 -

Quick Reference Operating Procedures

Operation

Before starting the unit, double-check all electrical

and plumbing connections. Make sure the bath is

properly filled with fluid.

To start the unit, press . To turn the unit off

press again.

The LED indicates the status of the heater. It

illuminates to indicate the heater is on.

The LED indicates the status of the refrigeration system. It illuminates to indicate the refrigeration system is removing heat from the cooling fluid.

Temperature Adjustment

To display the temperature setpoint, press on

the controller. The indicator will illuminate and

the display will flash the current setpoint value. To

adjust the temperature setpoint, press the arrow

buttons until the desired temperature setpoint is

indicated. Press again to confirm the change.

The display will rapidly flash the new value for a

short time and then return to the recirculating fluid

temperature.

Periodic Maintenance

Periodically inspect the reservoir fluid. If cleaning is

necessary, flush the reservoir with a cleaning fluid

compatible with your application.

The reservoir fluid should be replaced periodically.

Frequency depends on the operating environment

and amount of usage.

Before changing the reservoir fluid ensure it is

at a safe handling temperature.

Periodic vacuuming of the condenser fins is necessary. The frequency of cleaning depends on the

operating environment. We recommend a monthly

visual inspection of the condenser after initial

installation. After several months, the cleaning

frequency will be established.

Installation

Locate the unit on a sturdy work area. Ambient

temperatures should be inside the range of +50°F to

+104°F (+10°C to +40°C). The maximum operating

relative humidity is 80%.

Never place the unit in a location where excessive

heat, moisture, or corrosive materials are present.

The unit has an air-cooled refrigeration system. Air

is drawn through the front panel and discharged

through the rear panel. The unit must be positioned

so the air intake and discharge are not impeded. A

minimum clearance of 12 inches (30 centimeters) at

the front and rear of the unit is necessary for

adequate ventilation. Inadequate ventilation will

reduce cooling capacity and, in extreme cases, can

cause compressor failure.

Excessively dusty areas should be avoided and a

periodic cleaning scheduleshould be instituted.

The unit will retain its full rated capacity in ambient

temperatures up to approximately +75°F (+24°C).

Make sure the voltage of the power source meets

the specified voltage, ±10%.

The pump connections are located at the rear of the

pump box and are labelled and . These

connections are angled upward so the recirculating

fluid will drain back into the reservoir when the

hoses are disconnected. Both connections are

capped with stainless steel serrated plugs.

The pump lines have 1⁄4" MPT for mating with

standard plumbing fittings. For your convenience

stainless steel adapters, 1⁄4" FPT to 3/

8

" O.D.

serrated fitting, are provided.

The bath work area has a high and low level marker

to guide filling. The markers are 1 inch horizontal

slits located in the center of the stainless steel

baffle separating the work area and the pump

assembly. The correct fluid level falls between

these two markers. The unit will not start if the fluid

level is below the lower slit.

General Information
- 7 -

Description

The Thermo Scientific NESLAB RTE Refrigerated Bath/Circulators are designed to provide temperature control for applications requiring a fluid work area

or pumping to an external system. Units consist of a non-CFC air-cooled

refrigeration system, circulation pump, seamless stainless steel bath, work area

cover, and a microprocessor temperature controller.

Specifications1

RTE 7 RTE 10 RTE 17 RTE 740

Process Fluid

Temperature Range2 -25°C to +150°C -24°C to +150°C -40°C to +200°C

Temperature Stability3 ±0.01°C

Cooling Capacity4

General Information

-40-30-20-10 0 10 20 30 40 5060 70 80 90100

 Temperature °C

1100

1000

900

800

700

600

500

400

300

200

100

Heat Removal (Watts)

A=115/60 RTE-740 units

B=230/50 RTE-740 units

C=RTE-7, 10, 17

A

B

C

1. Specifications subject to change without notice.

2. Baths are tested at temperatures below freezing with denatured alcohol. This fluid is HIGHLY

flammable and is not recommended by Thermo Fisher Scientific. Above 80°C, baths are tested

at with silicone oil. This fluid is known to release a formaldehyde vapor (which is carcinogenic) above 150°C.

3. 20°C ambient. 20°C bath temperature using water. Sea level. Measured at the center of the

work area, work cover on, no external flow, stable ambient, full refrigeration (RTE-740 in

Energy Saving Mode). For some applications, agitation and stability above ambient may be

improved by connecting a small length of hose between the pump connections on the rear of

the unit.

4. 20°C ambient. 20°C bath temperature using water. Pump fully loaded. Sea level.
- 8 -

Time to Temperature

115V/60 Hz units

230V/50 Hz units

RTE-740 units

General Information
- 9 -

Heater (Watts)

115V/60 Hz Models 800 1600 800

230V/50 Hz Models 2000 2000 2000

100V/50-60Hz Models 800 1200 800

Refrigerant R134a (6 ounces) R404a (8 ounces)

Bath Work Area5

(W x L x D)

Inches 6 5/8 x 7 x 6 8 3⁄4 x 8 1/8 x 6 8 3⁄4 x 8 1/8 x 9 6 5/8 x 7 x 6

Centimeters 16.8 x 17.8 x 15.2 22.4 x 20.6 x 15.2 22.4 x 20.6 x 22.9 16.8 x 17.8 x 15.2

Bath Volume

Gallons 1.9 3.0 4.8 1.9

Liters 7.2 11.3 18.1 7.2

Air Flow Requirements

SCFM 170 200

Shipping Weight

Pounds 75 79 84 114

Kilograms 34 36 38 52

RTE 7 RTE 10 RTE 17 RTE 740

Pump Capacity4

4. 20°C ambient. 20°C bath temperature using water. Pump fully loaded. Sea level.

5. See next page for unit dimensions.

Pressure

Meters Feet

4.9 16

3.7 12

2.4 8

1.2 4

0.8 1.6 2.4 3.2 4.0 Gpm

3 6 9 12 15 Lpm

 Flow

General Information
- 10 -

Unitl Dimensions (inches)

General Information

B

A

C

11⁄2

E

D

F

30°

1⁄2

Rear View Side View

105°

17/8

7

/8

1

31⁄4

15

/8

Unit Dimensions "/cm RTE7 RTE 10 RTE 17 RTE740

Dimension A 23 5/8 23 5/8 26 5/8 26 5/8

60.0 60.0 67.6 67.6

Dimension B 9 1/4 11 3/8 11 3/8 11 3/8

23.5 28.9 28.9 28.9

Dimension C 19 20 1/8 20 1/8 20 1/8

48.3 51.1 51.1 51.1

Dimension D 17 3/8 17 3/8 20 3/8 20 3/8

44.1 44.1 51.8 51.8

Dimension E 10 5/8 10 5/8 10 5/8 12 3/8

27.0 27.0 27.0 31.4

Crate Dimensions 19 x 26 x 34 19 x 27 x 32 26 x 20 x 33 28 x 20 x 36

(D x W x H) 48 x 66 x 86 48 x 69 x 81 66 x 51 x 84 71 x 51 x 91
- 11 -

Section III Installation and Operation

Site

Ambient Temperature Range +50°F to +104°F (+10°C to +40°C)

Maximum Operating Relative Humidity 80%.

Overvoltage Category II

Pollution Degree 2

Never place the unit in a location where excessive heat, moisture, or

corrosive materials are present.

The unit has an air-cooled refrigeration system. Air is drawn through the

front panel and discharged through the rear panel. The unit must be

positioned so the air intake and discharge are not impeded. A minimum

clearance of 12 inches (30 centimeters) at the front and rear of the unit is

necessary for adequate ventilation. Inadequate ventilation will reduce

cooling capacity and, in extreme cases, can cause compressor failure.

Excessively dusty areas should be avoided and a periodic cleaning schedule

should be instituted (see Section IV, Condenser Cleaning).

Using 20°C water as a bath fluid, 115/60 units will retain their full rated capacity in ambient temperatures up to +20°C. Reduce the cooling capacity approximately 15 watts for every 1°C above +20°C, to a maximum ambient temperature of +40°C. For 230/50 units, reduce the cooling capacity approximately 18

watts for every 1°C. Lower reductions in cooling capacity occur as the bath

fluid temperature increases.

Installation and Operation
- 12 -

Electrical

Requirements

The unit construction provides protection against the risk of electrical

shock by grounding appropriate metal parts. The protection may not

function unless the power cord is connected to a properly grounded

outlet. It is the user's responsibility to assure a proper ground connection is provided.

The user is responsible to ensure that the power cord provided meets local

electrical codes. If not, contact qualified installation personnel.

The unit is intended for use on a dedicated outlet. The RTE has an internal

circuit protection that is equivalent (approx.) to the branch circuit rating. This is

to protect the RTE, and is not intended as a substitute for branch circuit

protection.

Refer to the serial number label on the rear of the unit to identify the specific

electrical requirements of your unit. Ensure the voltage of the power source

meets the specified voltage, ±10%.

The RTE-7 is not designed to be used beyond the voltage range or have

momentary power interruptions. Install an “un-interruptible power supply” or a

line loss detection method.

The following power options are available:

Unit Amps1 Breaker Power Inlet

RTE 7 115/60/1 12 15A IEC 320-C-13

100/50-60/1 12 15A IEC 320-C-13

230/50/1 12 15A IEC 320-C-19

RTE 10 115/60/1 12 15A IEC 320-C-13

100/50-60/1 12 15A IEC 320-C-13

230/50/1 12 15A IEC 320-C-19

RTE 17 115/60/1 16 20A IEC 320-C-19

100/50-60/1 16 20A IEC 320-C-19

230/50/1 12 15A IEC 320-C-19

RTE 740 115/60/1 16 20A IEC 320-C-19

100/50-60/1 16 20A IEC 320-C-19

230/50/1 12 15A IEC 320-C-19

Installation and Operation

1. Average Amp draw.
- 13 -

 1. Power cord length, if supplied, is 2 meters.

Unit Type1 Amperage Plug Type

115/60/1 15 NEMA 5-15

115/60/1 20 NEMA 5-20

100/50-60/1 15 NEMA 5-15

100/50-60/1 20 NEMA 5-20

230/50/1 All Country Specific

Installation and Operation

Power Cord Set

230 Volt, 50 Hertz units do not come with a power cord set. To select the

proper power cord, follow these guidelines:

The cord set must consist of a plug, cable and receptacle.

If the unit is rated greater than 12 Amps, use a cord set rated for 20A.

If the unit is rated less than 12 Amps, use a cord set rated for 15A.

The cord set must be approved by local electrical authority or other

 acceptable agency.

Ensure the plug is compatible with your local outlets and receptacles.
- 14 -

Installation and Operation

Plumbing Requirements

Ensure the unit is off before connecting tubing to the unit.

To prevent damage to the plumbing lines, always support the fittings

while installing/removing the pumping caps and lines.

Hose Connections

The pump connections are located at the rear of the pump box and are labelled

 (pump outlet) and (pump inlet). These connections are bent upward

so the recirculating fluid will drain back into the reservoir when the hoses are

disconnected. Both connections are capped with stainless steel serrated plugs.

The pump lines have 1⁄4" MPT for mating with standard plumbing fittings. For

your convenience stainless steel adapters, 1⁄4" FPT to 3

/8" O.D. serrated fitting,

are provided. (To assure proper fit, they should be installed using 11⁄2 turns of

Teflon® tape around the threads.)

Make sure all tubing connections are securely clamped. Avoid running

tubing near radiators, hot water pipes, etc. If substantial lengths of tubing

are necessary, insulation may be required to prevent loss of cooling capacity.

Tubing and insulation are available from Thermo Fisher. Contact our Sales

Department for more information (see Preface, After-sale Support).

It is important to keep the distance between the unit and the external system

as short as possible, and to use the largest diameter tubing practical. Tubing

should be straight and without bends. If diameter reductions must be made,

make them at the inlet and outlet of the external system, not at the unit.

If substantial lengths of cooling lines are required, they should be pre-filled with

bath fluid before connecting them to the unit. This will ensure that an adequate

amount of fluid will be in the bath once it is in operation.

Drain

Ensure the bath fluid is at a safe handling temperature before draining

the unit.

The unit is equipped with a drain located at the back of the unit labelled .

To drain the reservoir attach a hose to the barb and loosen the fitting.

The fitting has a stop to prevent it from coming off.

Pumping

The pump is designed to deliver a flow of 15 liters per minute (4 gallons per

minute) at 0 feet head. To prevent external circulation, the pump inlet and

outlet lines on the rear of the unit are capped. The caps must be removed when

external circulation is required.

To properly secure external hose connections to the unit, wrap Teflon® tape

around the pipe line threads before installation. Once the hose connections are

made, the hoses must be properly plumbed to an external system. It is

important the bath is not in operation until all plumbing is complete.
- 15 -

Circulating to an open container

A stainless steel leveling device is available to aid circulation to an open

vessel. Contact our Sales Department for more information (see Preface).

Support the leveling device over the open container with a ringstand. Stagger

the tubes in the leveling device so one tube is submerged in the vessel fluid,

and the other tube is level with the fluid surface. Connect the deeper tube to

the pump outlet and the shorter tube to the pump inlet.

Adjust the flow rate using the accessory flow control valve connected to the

pump outlet, or by partially restricting the outlet tubing. When properly

adjusted, the pump inlet will draw an occasional air bubble to prevent over

flow, and the pump outlet will force fluid through the submerged tube to

prevent aeration of the vessel.

To avoid siphoning the bath work area when the unit is shut off, lift the

leveling device out of the vessel and above the level of the unit.

Circulating through two closed-loops

The pump can be used to circulate through two closed-loop systems. Connect

the shortest practical length of flexible tubing from the pump outlet to the inlet

of external system #1. Connect the outlet of system #1 directly into the bath

work area. Connect tubing from the bath work area to the inlet of system #2.

Connect the outlet of system #2 to the pump inlet.

System #1

System #2

Bath

Work Area

Pump Box

Bath (Top View)

Bath (Rear View) Open Container

Outlet Inlet

Levelling

Device

Installation and Operation
- 16 -

Installation and Operation

Fluids

The user is always responsible for the fluid used. Never use flammable

or corrosive fluids with this unit. The use of chlorine or sodium

hypochlorite in the baths will cause pitting that could leave to failure of

the refrigeration system.

Handling and disposal of liquids other than water should be done in

accordance with the fluid manufacturers specification and/or the MSDS

for the fluid used.

For fluid selection consider application requirements, operating temperature

range, material compatibility, safety concerns, and environmental issues.

Wetted materials of bath include; 316 and 304 Stainless steels, Ryton® (PPS),

Teflon®(PTFE) and Ethlyene-Propylene rubber (EPDM).

Deionized (up to 18 MOhmcm) and distilled water are recommended to control

corrosion and algae bloom. See Water Quality Standards and Recommendation in Appendix A.

Ethylene glycol and water, propylene glycol and water, silicone oil, and filtered

water are acceptable fluids. See Appendix A for additional information.

NOTE: Kinematic viscosity of the selected fluid should not exceed 50

centistokes at the lowest operating temperature.

Please call Thermo Fisher Scientific customer service to discuss high and low

temperature fluid selections. However, we will often refer you to chemical

companies specializing in heat transfer fluids.

Filling

Requirements

Ensure the drain on the back of the unit is closed before filling the unit.

The bath work area has a high and low level marker to guide filling. The

markers are 1 inch horizontal slits located in the center of the stainless steel

baffle separating the work area and the pump assembly. The correct fluid

level falls between these two markers.

NOTE: The unit is equipped with a reservoir level float switch. The switch

prevents the unit from starting if the fluid is below the lower slit.

When pumping to an external system, keep extra fluid on hand to maintain

the proper level in both the circulating lines and the external system.

Avoid overfilling, fluids expand when heated.
- 17 -

Controller

(Digital One/Digital Plus)

The controller controls temperature using a Proportional-Integral-Derivative

(PID) algorithm. It is designed with self-diagnostic features and easy to use

operator interface. Two controller options are available: Digital One and Digital

Plus. The information on the following two pages applies to both controllers.

ON/OFF. Use this key to toggle the unit on or off and to clear error messages.

SCROLL. Use this key to scroll through the controller's LEDs. It is also

used to save new changes.

YES/ARROW. Use this key to increment numerical values when setting

values and to accept new settings.

 NO/ARROW. Use this key to decrement numerical values when setting

values and to abort new settings.

Indicates refrigeration system status. It illuminates to indicate the refrigeration

system is removing heat from the bath fluid. The indicator is off when heat is not

being removed.

Indicates heater status. It illuminates to indicate the heater is adding heat from

the bath fluid. The indicator is off when heat is not being added.

Digital One Controller

Yes

No

Installation and Operation
- 18 -

Installation and Operation

NOTE: The following indications are not visible until is depressed.

Setpoint. Indicates the controller is displaying the current setpoint.

Low Temperature Alarm. Indicates the controller is displaying the current

low temperature alarm.

High Temperature Alarm. Indicates the controller is displaying the current

high temperature alarm.

To adjust the displayed value use the arrow buttons. Pressing an arrow button

will cause the display to stop flashing and to indicate the new setpoint value.

Save the change by pressing SCROLL. The new setpoint value will rapidly flash

for two cycles and then the controller will return to the reservoir fluid temperature display.

If SCROLL is not pressed within 60 seconds the change will time out and revert

to the original setpoint. The controller will automatically return to the reservoir

fluid temperature display.

NOTE: You can not adjust the setpoint closer than 0.1°C of either temperature

limit, and you can not adjust either temperature limit within 0.1°C of the

setpoint. Trying to do so will cause the indicator to flash and, on Digital Plus

controllers, the alarm to beep.

On units with the Digital Plus controller, pressing the Mute button prior to

pressing SCROLL will abort any changes and return to the reservoir fluid

temperature display.
- 19 -

Start Up/Shut Down

(Digital One/Digital Plus)

Before starting the unit, recheck all electrical and plumbing connections.

Ensure the bath reservoir is properly filled. The unit will not start if the reservoir

fluid level is below the lower horizontal slit.

The unit can be configured for automatic restart. If the unit shuts down as

a result of a losing power, once power is restored the unit will restart.

See Setup/Tuning Loop on page 21 to enable this feature.

Press . The controller does a self-test (sequences through the LEDs, and

Digital Plus units momentarily sound the alarm), then quickly displays the

setpoint before displaying the reservoir fluid temperature. The pump starts and,

after a 30 second delay, the refrigeration comes on. The RTE-740 refrigeration

system is designed to start with the pump.

NOTE: If the unit's recirculating fluid is outside either temperature limit, the unit

will start but the appropriate indicator will flash until the fluid is within the limit.

If refrigeration is needed for operation above 50°C, turn on the Full Range

Cooling Mode. See Setup/Tuning Loop on page 21 to enable this feature.

To display/change the setpoint press until illuminates. The display

will flash the current setpoint value. Use the arrow buttons to change the value.

The controller will not allow you to enter a setpoint closer than 0.1°C of either

temperature alarm setting, see next page. Attempting to causes the indicator

to flash and, on Digital Plus controllers, sounds the alarm.

Once an arrow button is depressed starts to flash. If an arrow button is not

pressed within 10 seconds the display will return to the reservoir temperature.

On units with the Digital Plus controller, pressing Mute prior to pressing

SCROLL will abort any change and return you to the fluid temperature display.

Once the desired setpoint is displayed, press again to confirm the

change. The display will rapidly flash the new value twice and then return to the

recirculating fluid temperature. If the new value is not confirmed within 60

seconds the display will return to the fluid temperature and ignore any change.

Controller

Pre-Start

Starting

Setpoint

Installation and Operation

Full Range Cooling
- 20 -

Installation and Operation

To display/change the low temperature alarm setting press until 

illuminates. The display will flash the current limit value. Use the arrow buttons

to change the value. You can not set the alarm closer than 0.1°C below the

setpoint. Attempting to causes the indicator to flash and, on Digital Plus

controllers, sounds the alarm.

On units with the Digital Plus controller, pressing Mute prior to pressing

SCROLL will abort any change and return you to the fluid temperature display.

Once an arrow button is depressed starts to flash. If an arrow button is not

pressed within 10 seconds the display will return to the current reservoir

temperature.

Once the desired setting is displayed, press again to confirm the change.

The display will rapidly flash the new value twice and then return to the recirculating fluid temperature. If the new value is not confirmed within 60 seconds the

display will return to the fluid temperature and ignore any change.

To display/change the high temperature alarm setting press until 

illuminates. The display will flash the current setting value. Use an the arrow

buttons to change the value. You can not set the alarm closer than 0.1°C

above the setpoint. Attempting to causes the indicator to flash and, on Digital

Plus controllers, sounds the alarm.

On units with the Digital Plus controller, pressing Mute prior to pressing

SCROLL will abort any change and return you to the fluid temperature display.

Once an arrow button is depressed starts to flash. If an arrow button is not

pressed within 10 seconds the display will return to the current reservoir

temperature.

Once the desired limit is displayed, press again to confirm the change.

The display will rapidly flash the new value twice and then return to the recirculating fluid temperature. If the new value is not confirmed within 60 seconds the

display will return to the fluid temperature and ignore any change.

To turn the unit off, press . The pump will stop and the refrigeration will

shut down. NOTE: The RTE-740 refrigeration system is designed to shut down

thirty seconds after the pump.

Thermo Fisher recommends waiting a minute before restarting the unit.

High Temp Alarm

Stopping

Low Temp Alarm
- 21 -

Setup/Tuning Loop

(Digital One/Digital Plus)

The Setup/Tuning Loop is used to tune the controller's PID parameters

(CooL HEAt); enable/disable auto restart (AStrt); determine how the unit

will react when a fault occurs (FAUlt) — either shut down (on) or continue

to run (oFF); to configure the temperature display to indicate to a tenth or a

hundredth of a degree (rES); and to enable/disable full range cooling (FrC)

and energy saving (ESAuE) modes.

To enter the loop you must be displaying the reservoir fluid temperature,

press and hold and then press . The display will indicate tunE. Use

the arrow keys to sequence through the loop and to change a display. Use

 to confirm any changes.

Changes made in the Tuning/Setup Loop take affect when Yes is pressed at

the StorE prompt. Pressing No at the prompt aborts all changes.

Thermo Fisher recommends that only a qualified technician

change PID parameters. Incorrect PID values will hamper unit

performance. See page 41 for factory preset PID values.

Factory preset = off

Factory preset = off

Factory preset = 0.1

Factory preset = off

Full range cooling mode allows the refrigeration to

operate throughout the entire temperature range. If

off, refrigeration is available only below 50°C.

Installation and Operation

Factory preset = off

The Energy Saving mode is primarily designed for

applications running under a stable load. Enabling

the mode saves energy by reducing the unit’s

heater power requirements. This can result in

substantial energy savings over the life of the unit.

AStrt AStrt

FAULt FAULt

rES

FrC

ESAuE

rES

CooL

HEAt

CooL

StorE

 on

 on

 0.1

 on

 on

oFF

oFF

0.01

Accept Changes All

tunE

XX.X

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

No

No

No

No

No

HOLD

No

RTE-7, 10, 17 only

NOTE: For RTE-7,

10, and 17 units the

COOL PID display

only appears if the

Energy Saving

mode is enabled,

see below.
- 22 -

Installation and Operation

Alarm. If the alarm sounds, use this button to toggle the alarm off and on. If

the cause of the alarm is cleared but then reoccurs, the alarm will sound again.

The button is also used to abort changes to the setpoint and temperature

alarms. It is also used to abort changes when configuring the unit for external

probe, serial communication, timer operation, or offset mode.

NOTE: Pressing and holding any of the following buttons for five seconds takes

you to their calibration or setup loop.

External Probe. Pressing the Sensor button displays the external probe

temperature and lights the LED indicating that the bath is monitoring and

controlling to this temperature. The unit will continue to monitor the internal

bath temperature to ensure the bath is running in a safe operating mode.

NOTE: If there is no sensor attached (or the circuit is open), or serial communications is enabled, the button will flash, and the alarm will beep three times.

The display will momentarily show an error message and then return to the

reservoir fluid temperature.

NOTE: The temperature display may drift for up to 10-15 seconds when

transitioning between temperature sensors. This is normal operation.

Serial Communication. Pressing Computer enables/disables the serial

communications mode of operation. In this mode all changes to the setpoint,

alarm limits, etc. must now be sent by a remote device using RS-232 or

RS-485 protocols. You can still view all settings locally but cannot alter them.

Once enabled, the Computer LED will flash when sending and receiving

signals. See Appendix B for additional information.

You can also turn the unit off by pressing but the unit will remain in the

serial communication mode. To restart, send another start command.

NOTE: If the unit is shut down in the serial communication mode and you need

to start the unit using the local controller, simultaneously depress and hold

both arrow keys for approximately 10 seconds. The display will then show the

internal probe temperature, and the alarm will sound. Press the 

Computer

 LED

and turn off the LED and disable serial communications. Turn the controller off

using . You can now start and operate the unit with the keypad.

Sensor

Computer

 Mute

Controller

(Digital Plus Only)
- 23 -

Timer. Pressing the Timer button enables/disables the Timer function of the

bath. You can define the current time, a turn-on time, and a turn-off time.

To setup the bath for timer operation see Timer Setup Loop on page 25.

If the bath is turned off using with the timer mode enabled, the Timer LED

will go out and the timer mode will be disabled. With the bath off, you have to

press the Timer button to enable the timer mode and light the LED.

NOTE: Enabling serial communications; time-on not defined; time-off not

defined; or clock not set, causes an error condition and disables the TIMER

mode. In this case the button will flash, the unit will beep three times, and the

display will momentarily show an error message.

If a power disruption occurs, the timer mode is disabled. The Timer Setup Loop

will have to be used to restore the settings.

Temperature Offset Mode. Pressing the Offset button, with the bath on,

enable/disables the temperature offset mode. This mode changes the temperature displayed on the bath a user defined amount. The LED will be lit when this

mode is enabled indicating that the temperature displayed is an offset value.

NOTE: The temperature offset only affects the displayed value when the offset

mode is enabled, the other setpoint values still dictate unit performance.

To setup the bath for offset mode operation see Offset Setup Loop on page 26.

If you press the Offset button when an offset is 0 or not defined, or if serial

communications is enabled, the button will flash, the unit will beep three times,

and the display will momentarily show an error message (Er53 for offset

undefined, Er54 for serial comm on). In either case the function can not be

enabled.

NOTE: Use this feature only when the bath is at a stable temperature.

In either local or Computer mode with offset disabled, the unit controls to and

displays the calibrated value for the internal or external probe, whichever is

selected.

In either local or Computer mode with offset enabled, the unit still controls to

the calibrated value, not the offset value, for the internal or external probe.

The display shows the calibrated value with the offset value added.

In Computer mode if you send a signal to the bath to display internal or

external probe temperatures, the calibrated value is returned. If you send a

signal to change the display value the offset value is returned.

Timer

Offset

Installation and Operation
- 24 -

Installation and Operation

Computer Setup Loop

(Digital Plus Only)

NOTE: The Computer Setup Loop is not available if the serial communications

mode is enabled. Review/change the settings before entering the mode.

The Computer Setup Loop is used to set the serial communications protocol

parameters. With the bath on, press and hold the Computer button for five

seconds. The controller will display SErL. Press the arrow buttons to toggle

between 232 and 485. Press the Computer button to hold the protocol and

advance you through the loop to adjust the remaining parameters. Press the

arrow buttons to adjust any parameter. When StorE is displayed press YES to

accept any new values, NO to abort them.

If the Computer button is not pressed for 60 seconds the function will time-out

and the changes will not be saved. Pressing the Mute button will also exit the

Computer Setup Loop and return you to the reservoir fluid temperature display.

Once enabled, the Computer LED will flash when sending and receiving

signals. See Appendix B for additional serial communication information.

Computer

Factory preset = RS232

Factory preset = 19200

Factory preset = 1

(RS-485 only)

A In = Analog In, Optional

See page 27.

StorE

 232

 19200

9600

4800

2400

1200

600

300

485

A In

Accept All Changes

SErL

bAud

XX.X

Yes

Yes

Yes

No

No

No

Computer

Computer

Addr 1 to 100

Yes

No

Computer

Computer

Hold for 5 seconds
- 25 -

Timer Setup Loop

(Digital Plus Only)

To set the timer, with the bath on, press and hold the Timer button for five

seconds to access the controller's Timer Setup Loop. The display will indicate

diSP. Use the arrow buttons to select the desired clock display. Press the

Timer button and the controller will display cloc. Use the arrow buttons to

display the correct time.

Press the Timer button and the controller will display t-On. Press the arrow

buttons to set the desired turn-on time. Press the Timer button and the

controller will display t-OFF. Press the arrow buttons to set the desired turn-off

time. Pressing the Timer button after entering the clock time will display StorE.

Press YES to accept the values, NO to abort them.

If the Timer button is not pressed for 60 seconds the function will time-out and

the changes will not be saved. Pressing the Mute will also exit the Timer Setup

Loop and return you to the temperature display.

If the bath is turned off using with the timer mode enabled, the Timer LED

will go out and the timer mode will be disabled. With the bath off, you have to

press the Timer button to enable the timer mode and light the LED.

NOTE: Enabling serial communications disables the

TIMER mode. If an error condition exists: serial

communications enabled; time-on not defined; timeoff not defined; or clock not set, the unit will beep and

will not enable the function. The display will then

indicate the reservoir fluid temperature.

If a power disruption occurs, the timer mode is

disabled. The Timer Setup Loop will have to be used

to restore the settings.

Installation and Operation

Timer
- 26 -

Installation and Operation

Offset Setup Loop

(Digital Plus Only)

Offset

StorE

xxx.x

Accept All Changes

OFSEt

XX.X

Yes

Yes

No

No

Hold for 5 seconds

Offset

Offset

NOTE: Use this feature only when the bath is at a stable temperature.

Press the Offset button to display the current offset temperature value and

illuminate the LED.

To change the value press and hold the Offset button for five seconds to enter

the controller's Offset Setup Loop. The bath will alternately flash oFSEt with the

current temperature.

Use the arrow buttons to change the value. For example, if the bath is at

+40°C and the desired offset is +5°C, change the display to +45°C. Press the

Offset button once the desired offset is displayed. (If the Offset button is not

pressed the function will time-out and the change will not be saved.) The

display will show StorE. Press YES to accept the value, NO to abort it.

If, after pressing YES, the display returns to +40°C, not +45°C, the Offset

button was not depressed when you entered the Offset Setup Loop. Press the

Offset button to display the offset temperature and illuminate the LED.

NOTE: Offset only changes the display of the enabled probe. Setpoint and

alarm values will display the non-offset value.

If you press the Offset button when an offset is 0 or not defined, or if serial

communications is enabled, the button will flash, the unit will beep three times,

and the display will momentarily show an error message (Er53 for offset

undefined, Er54 for serial comm on). In either case the function can not be

enabled.

With offset disabled, the unit controls to and displays the calibrated value for

the internal or external probe, whichever is selected.

With offset enabled, the unit still controls to the calibrated value, not the offset

value, for the internal or external probe. The display shows the calibrated value

with the offset value added.

In Computer mode if you send a signal to the bath to display internal or

external probe temperatures, the calibrated value is returned. If you send a

signal to change the display value the offset value is returned.
- 27 -

A I/O Analog Port

The 15-pin female receptacle located on the rear of the controller is used for

optional analog interface.

The analog signal is setup using the unit's Computer Setup Loop. With the

bath on, press and hold the Computer button for five seconds. The controller

will display SErL. If needed, press the arrow buttons to toggle between 232,

485, and A In. With A In displayed, press the Computer button again until

StorE is displayed, press YES. Use the Computer button to enable/disable the

analog signal. The button will flash when A in is enabled.

Contact Ratings, Pins 1, 2, and 3

Maximum Voltage = 30 V AC/DC

Maximum Current = 1 Amps @ 30 V

Minimum permissible load 10uA, 10mVDC

Pin # Function

1 Status relay NO. Status relay pins 1 and 3 close on start up, and open

on stop and all errors.

2 Status relay NC. Status relay pins 2 and 3 open on start up, and close

on stop and all errors.

3 Status relay common

4-5 Not used

6 Analog Ground. The analog ground is physically separated from the

power ground throughout the unit. To prevent offsets that result from

ground currents, the analog and power grounds are only connected at

the unit's power supply. Analog ground should only be used as a

reference pin.

7 Temp out. The fluid temperature, as measured by the enabled sensor,

can be read at this pin. The temperature scale is 10mV/°C, referenced

to analog ground, pin 6 (example: +150mV = +15.0°C).

8 Not used

9 Digital output ground, reference for pin 14. Digital output ground should

only be used as a reference pin.

10-13 Not used

14 Digital output +5VDC at 15mA max. 70mA max inrush current. This

power supply energizes on start up and de-energizes on stop and all

errors.

15 Setpoint in. The temperature setpoint can be controlled by applying a

known voltage to this pin. The temperature scale is 10mV/°C, referenced to analog ground, pin 6 (example: +230mV = +23.0°C).

The analog output requires calibration, see page 36.

Analog Port - Optional

(Digital Plus Only)

Installation and Operation

8 7 6 5 4 3 2 1

15 14 13 12 11 10 9
- 28 -

Installation and Operation

High Temperature Cutouts

(Digital One/Digital Plus)

Adjustable High Temperature Cutout

To protect your application, the adjustable High Temperature Cutout ensures

the heater will not exceed temperatures that can cause serious damage to

your unit. A single temperature sensor is located in the bath fluid. A High

Temperature fault occurs when the temperature of the sensor exceeds the set

temperature limit. The safety has a range of 0°C to 230±20°C.

In the event of a fault the unit will shut down and the controller will display HtC.

The cause of the fault must be identified and corrected before the unit can be

manually restarted.

The cutout is not preset and must be adjusted during initial installation. To set

the cutout, locate the small black adjustment dial on the rear of the controller.

Turn the dial fully clockwise and turn the power switch off then back on.

Start the unit. Adjust the setpoint for a few degrees higher than the highest

desired fluid temperature and allow the bath to stabilize at the temperature

setpoint. Turn the dial counterclockwise until you hear a click and the unit

shuts down.

Before you can restart the bath it has to cool down a few degrees. Then,

without moving the adjustment dial, turn the power switch off then back on.

NOTE: We recommend rechecking operation if the unit is moved.

Non-Adjustable High Temperature Cutout

For added safety, the unit also has a non-adjustable High Temperature Cutout.

With fluid in the bath, it is set to trip at 225°C ±8°C.

If the bath is empty, the cutout has a typical trip point of 300°C. The heater

temperature can continue to rise after the cutout trips up to approximately

314°C.

There will be no indication the High Temperature Cutout activated other than an

audible click. The unit will continue to run but the heater will no longer operate.

Service will be required.

High Temperature Cutout

N2 Nitrogen Purge
- 29 -

Nitrogen Purge

(Digital One/Digital Plus)

Units are equipped with nitrogen purge line designed to accept a constant flow

of dry nitrogen into the reservoir. The nitrogen blankets the cooling fluid reducing fluid evaporation.

Connect your nitrogen line to the N2 1

/8" OD tube on the rear of the unit.

Accessories

(Digital One/Digital Plus)

Autorefill Accessory

The autorefill accessory attaches to the rear of the bath. The autorefill provides

makeup water to replace bath fluid lost to evaporation, etc. It will require a

pressurized water source. A reservoir level float switch and logic/signal are

already installed in the bath.

When water is available, the bath is turned on, and the fluid reaches the lower

1 inch horizontal level indicator located in the reservoir the autorefill begins

filling the bath. The autorefill shuts off when the fluid reaches the upper indicator, or if the bath is turned off.

Description Part Number

100-115V/50/60Hz 611012000001

200-240V/50/60Hz, No line cord 611028000001

Cap Tube

Tap Water Inlet Power Supply Inlet

Autorefill Control

Cable Attachment

Autorefill Module

Installation and Operation

NOTE: Power the Autorefill Accessory with an AC Adapter that is UL Listed

with the following ratings:

- Class 2

- Input rated 100-240 VAC, 47-63 Hz, 0.4A

- Output rated 12VDC, 1.25A Max.
- 30 -

Installation and Operation

Reservoir Overflow Device

The overflow device is designed to act as an automatic drain for the unit's

reservoir. The assembly is stainless steel with the exception of the drain fitting

which is Ryton®. The unit can still be drained as normal, but if the level reaches

the middle of the tee it will begin to overflow out the bent tube.

•Drain the unit's reservoir.

•Remove and discard the stop screw from the

bottom of the unit's drain housing.

•Remove the unit's drain fitting.

•Thread the overflow assembly into the drain

housing. (You can remove the vertical tube

assembly from the Swagelok® fitting if

there is a clearance issue.)

•After threading the overflow assembly

in as far as it goes, loosen it back out

until the Swagelok® fitting is at the top.

•Install one of the two supplied

4-40 x 1⁄4” phillips head screws into

the bottom of the drain housing where

the stop screw use to be. (Make sure

this screw is tight so that the assembly doesn’t turn and drain the tank.)

•Reinstall the vertical tube assembly into the Swagelok® if it was removed.

•Install the drain fitting into the end of the new assembly - finger tight.

•Install the other supplied 4-40 x 1⁄4"phillips head screw into the bottom of the

overflow assembly. (This prevents the drain fitting from falling off the unit.)

Description Part Number

RTE 7 and RTE 10 overflow device 126000000044

RTE 17 overflow device 126000000045

RTE 740 overflow device 126000000049

Drain Housing

Overflow Assembly

Drain Fitting

(Install

finger tight)

Swagelok® Fitting

Vertical Tube
- 31 -

Stainless Steel Test Tube Racks

Unit Test Tubes (maximum) Size (mm) Part Number

RTE 7 49 13 126000000040

RTE 7 25 18 126000000041

RTE 10 72 13 126000000042

RTE 10 42 18 126000000043

RTE 17 72 13 126000000042

RTE 17 42 18 126000000043

RTE 740 49 13 126000000040

RTE 740 25 18 126000000041

External Sensors (Digital Plus only)

Description Part Number

6"L X .187"DIA, 6' Lead, Stainless Steel probe 058520

18"L X .187"DIA, 6' Lead, Stainless Steel probe 058521

1.5"L X .187"DIA, 6' Lead, Stainless Steel probe 058522

1.5"L X .062"DIA, 6' Lead, Stainless Steel probe 058523

6"L X .187"DIA, 6' Lead, Teflon® probe 058524

6"L X .187"DIA, 15' Lead, Stainless Steel probe 126000000025

6"L X .187"DIA, 20' Lead, Stainless Steel probe 126000000029

6"L X .187"DIA, 30' Lead, Stainless Steel probe 126000000024

1.5"L X .187"DIA, 30' Lead, Stainless Steel probe 126000000033

GFCI* Breaker Line Cords (115V 60Hz units only)

Unit Description Part Number

15 Amp Units 125V/15A 4-6MA 126000000050

20 Amp Units 125V/20A 4-6MA 126000000051

RS-232/485 Communication Cables (Digital Plus only)

Description Part Number

10' Cable Assembly 083258

The following accessories are also available from Thermo Fisher:

*Ground Fault Current Interrupter. An electrical safety device which opens a circuit upon

observation of electricity leaking to ground through an undefined path, most likely a human

being. GFCI receptacles are required by the NEC in many locations.

Installation and Operation
- 32 -

Accessories

(Digital Plus Only)

RPC Remote Box

An RPC can control the bath from a remote location. It mirrors the controller

displays; and has the ability to store and run up to 16 programs. It operates by

sending and receiving information by RS-485 serial communication. It attaches

to the unit by an RS-485 cable with 9-pin D subminature connectors.

The remote can be mounted to the wall with an included wall bracket, or it can

be used on a desk top with the wall bracket removed.

Typical RPC Display

COOL

HEAT

MENU

SETPOINT

120.0°C

BATH ON

Description Part Number

RPC 100-115V/50/60Hz/1Ø 604012000401

(with NEMA 5-15P type plug)

RPC 100-240V/50/60Hz/1Ø 604028000401

(requires country specific line cord, not included)

10' Cable Assembly (included) 083258

25' Cable Assembly 426000000029

50' Cable Assembly 426000000030

75' Cable Assembly 426000000031

100' Cable Assembly 426000000032

200' Cable Assembly 426000000033

Installation and Operation

NOTE: Power the RPC with an AC Adapter that is UL Listed with the following

ratings:

- Class 2

- Input rated 100-240 VAC, 47-63 Hz, 0.4A

- Output rated 12VDC, 1.25A Max.
- 33 -

Section IV Basic Maintenance

To avoid electrical shock, disconnect the mains cord prior to removing

any access panels or covers.

Service Contracts

Thermo Fisher Scientific offers on-site Service Contracts designed to provide

extended life and minimal down-time for your unit. For more information,

contact our Service Department (see Preface, After-sale Support).

Reservoir Fluid

Periodically inspect the reservoir fluid. If cleaning is necessary, flush the

reservoir with a cleaning fluid compatible with your application.

The reservoir fluid should be replaced periodically. Frequency depends on the

operating environment and time of usage.

Before changing the cooling fluid ensure it is at a safe handling temperature.

Reservoir Cleaning

Routine cleaning can be achieved by simply sponging down the seamless

stainless steel tank with tap water. (Dish washing detergent may be used but

the tank must be thoroughly rinsed.)

Algae

To restrict the growth of algae in the bath, we recommend that all circulation

lines be opaque. This will eliminate the entrance of light required for the growth

of most common algae.

We recommend the use of Chloramine-T, 1 gram per 31⁄2 liters.

Condenser Cleaning

For proper operation, the unit needs to pull substantial amounts of air through

a condenser. A build up of dust or debris on the fins of the condenser will lead

to a loss of cooling capacity.

Periodic vacuuming of the condenser is necessary. To access the condenser

the front grille must be removed.

The unit must be turned off before the front panel is removed.

All units have a one-piece condenser grille assembly held on by spring clips.

Carefully pull forward on the bottom of the panel to remove it.

The cleaning frequency depends on the operating environment. After initial

installation, we recommend a monthly visual inspection of the condenser.

After several months, the cleaning frequency will be established.

Maintenance
- 34 -

Maintenance

Internal Temperature

Sensor (rdt1)

Calibration

Should the bath fluid temperature display disagree with your calibrated reference thermometer, the internal temperature sensor (rtd1) may need calibration.

Do not pick calibration points that are outside the safe operating limits of the

fluid in your application. For example with water, 90°C and 5°C would be

typical calibration points.

NOTE: If it is more convenient, the low-end calibration can be performed before

doing the high-end.

Run the bath to a suitable highend calibration point. Place a

calibrated reference thermometer

in the bath. Ensure the fluid

temperature is stabilized. Press

and hold the NO button and then

press the YES button three

times. Release the NO button.

The controller will display CAL.

Press YES and the controller will

display rdt1. Press YES again and

the controller will display

r1 H. Press YES again and the

controller will alternately flash

r1 H and the current probe temperature. Use the arrow

buttons to adjust the temperature to match the reference

thermometer.

Press the SCROLL and NO buttons as shown until

StorE is displayed, press YES to accept the new value,

press No to abort it.

Repeat for the low-end temperature. Run the bath to a

suitable low-end calibration point. At the r1 L display use

the arrow buttons to adjust the temperature to match a

calibrated reference thermometer.

Press the SCROLL and NO buttons as shown until StorE is displayed, press

YES to accept the new value, press NO to abort it.

NOTE: Both the high and low temperatures must be entered for a valid calibration. If power is lost before the procedure is complete, critical data needed for

the calculation of calibration parameters will be lost. After pressing the YES

button at the StorE prompt wait several seconds before proceeding to ensure

that a bad calibration message does not appear. Premature use of the keypad

after pressing the YES button may cancel the bad calibration error message.

Accept All Changes

XX.X

Yes

No

CAL

rtd1

rdt3

A in

AoUt

r1 H r1 H

r1 L r1 L

200.0

-40.0

Yes

Yes

No

No

No

No

Press and Hold

No

Yes

Yes

Yes Yes

Yes

Yes

Yes

Release No

No

No

No

No

No

StorE

Optional Display

Optional Display

rtd3 is used to calibrate the

refrigeration system, contact

Thermo Fisher.
- 35 -

External Temperature

Sensor (rtd2)

 Calibration

(Digital Plus Only)

When using any external sensor (rtd2) for the first time, Thermo Fisher recommends a calibration. This calibration will only affect the temperature read by

the external sensor.

Do not pick calibration points that are outside the safe operating limits of the

fluid in your application. For example with water, 90°C and 5°C would be

typical calibration points.

NOTE: If it is more convenient, the lowend calibration can be performed

before doing the high-end.

Run the bath to a suitable high-end

calibration point. Place the sensor and

a calibrated reference thermometer in

the bath. Ensure the fluid temperature

is stabilized. Press and hold the

Sensor button for five seconds. The

controller will display rtd2. Press YES

and the controller will display r2 H.

Press YES and the display will

alternately flash r2 H and the current

probe temperature. Use the arrow

buttons to adjust the temperature to

match the reference thermometer.

Press the SCROLL and NO buttons until StorE is displayed, pressing YES

accepts the new value.

Repeat for the low-end temperature. Run the bath to a suitable low-end calibration point. At the r2 L display use the arrow buttons to adjust the temperature

to match a calibrated reference thermometer.

Pressing the SCROLL button after the low calibration will display StorE,

pressing YES accepts the new value.

If the SCROLL button is not pressed for 60 seconds the function will time-out

and the changes will not be saved. Pressing Mute will also exit the calibration

and return you to the reservoir fluid temperature display.

NOTE: Both the high and low temperatures must be entered for a valid calibration. If power is lost before the procedure is complete, critical data needed for

the calculation of calibration parameters will be lost. After pressing the YES

button at the StorE prompt wait several seconds before proceeding to ensure

that a bad calibration message does not appear. Premature use of the keypad

after pressing the YES button may cancel the bad calibration error message.

Maintenance

Accept All Changes

XX.X

Yes

No

rtd2 r2 H

r2 L

r2 H

r2 L

200.0

-40.0

Yes

Yes

No

No

No

No

Yes Yes

Yes

Yes

Yes

No

StorE

Hold for 5 seconds

Sensor
- 36 -

Optional Analog Port/

Calibration (Digital Plus Only)

The analog signal is setup using the unit's Computer Setup Loop. With the

bath on, press and hold the Computer button for five seconds. The controller

will display SErL. If needed, press the arrow buttons to toggle between 232,

485, and A In. With A In displayed, press the Computer button again until

StorE is displayed, press YES. The Computer button will flash when A in is

enabled. Use the Computer button to enable/disable the analog signal.

The analog input and output are calibrated at the factory. If you need to

recalibrate follow the diagram until the display indicates A in.

Pressing YES at the A in display and the display will indicate A iH. Press

YES and the display will alternate between A iH and some value. Apply 2.5V

to the analog input pin 15, see page 27 (analog ground is pin 6). Measure the

precise value with a voltmeter.

Change the value on the bath display to match the voltmeter reading.

Press SCROLL to check your value and

then press SCROLL again to display A iL.

If desired, repeat the procedure for A iL.

Apply 0V to pin 15. Measure the voltage

and change the displayed value to match it

Pressing YES at the AoUt display and the

display will indicate A oH. Press YES and

the display will alternate between A oH

and 2.5000, the bath will set the Temp Out

pin 7 output voltage to approximately 2.5V.

Measure the voltage and change the

displayed value to match it. Press

SCROLL to check your value and then

press SCROLL again to display A oL.

If desired, repeat the procedure for A oL.

The display will alternate between A oH

and -.5000, the bath will set the Temp Out

pin 7 output voltage to approximately

-0.5V. Measure the voltage and change the

value to match the meter.

At the StorE display press YES to save the calibration, press No to abort it.

NOTE: If error code Er16 appears you will need to recalibrate.

Factory preset values:

A iH = 2.5000

A iL = 0.0000

A oH = 2.5000

A oL = -.5000

Accept All Changes

XX.X

Yes

No

CAL

rtd1

rdt3

A in

AoUt

A iH

A oH

A iL

A oL

A iH

A oH

A iL

Yes

Yes

Yes

Yes

No

No

No

No

 x.xxxx

 x.xxxx

 x.xxxx

 x.xxxx

Press and Hold

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Release No

No

No

No

No

No

No

No

No

No

StorE

Maintenance
- 37 -

Troubleshooting

Section V Troubleshooting

Error Codes

On Start Up:

ROM checksum. Check with Thermo Fisher

Test failure. Locks up the program

Display board failure. Clears when display board is fixed

Critical checksum failure. Check with Thermo Fisher

Operational Errors:

 Asynchronous communication error, check serial interface

 parameters

Bad calibration data entered using Calibration Loop. Redo calibration

Unusual Hardware Conditions

These errors will flash on the display and cannot be cleared. These are internal

controller problems.

 through - Interrupt errors during runtime

 Synchronous communication error - check connections

 BOM invalid. Contact Thermo Fisher

Functional/ Machine Errors

Warnings self-clear after the cause of the error is identified and corrected.

Faults require pressing I/0 to clear the error message and then pressing

I/0 again to start the unit after the cause of the error is identified and corrected.

Error Display Indication

Low temp setpoint warning/fault, see page 21

Low level warning, fluid below safe operating level

High temp setpoint warning/fault, see page 21

Refrigeration sensor shorted

Refrigeration sensor open

Shorted external temperature sensor (rtd2)

Open external temperature sensor (rtd2)

Shorted internal temperature sensor (rtd1)

Open internal temperature sensor (rtd1)

Fluid low level fault - unit shuts down

Refrigeration assembly high temp fault - unit shuts down

Continued on next page.
- 38 -

High temp fault - unit shuts down, see page 28

Configuration error

Invalid timer setting, see page 25

Offset setting = 0 or not defined, see page 26

Feature not available because serial communication

mode is enabled

Unit reaction to warning/fault errors depend on how the unit is configured, see

Setup/Tuning Loop on page 21. The unit is shipped configured to continue

running. If any other code appears contact Thermo Fisher customer service.

External Sensor

Connector

Digital Plus units are equipped with a male 9-pin D-connector located on the

rear of the control box. The connector is used with an optional external sensor.

Troubleshooting

Pin # Function

1 3-wire RTD connection A

2 No connection

3 No connection

4 3-wire RTD connection A

5 No connection

6 No connection.

7 3-wire RTD connection B

8 No connection

9 No connection

Hardware Internal Connector Mating Connector

AMP Part# 745492-2 AMP Part# 745491-2

RTD

Example

1 2 3 4 5

6 7 8 9
- 39 -

Troubleshooting

Checklist

Unit will not start

Check the line cord; ensure it is plugged in.

Check the position of the circuit breaker on the rear of the unit.

Check reservoir. Unit will not start if fluid level is below the lower horizontal slit.

On Digital Plus controllers, check Serial Communication Mode on or off.

Check the controller for error codes, see previous page.

Make sure the voltage of the power source meets the specified voltage,

±10%. Refer to the serial number label on the rear of the unit to identify the

specific electrical requirements of your unit.

Loss of cooling capacity

Be sure the cooling capacity of the unit has not been exceeded if circulating to

an external system.

Proper ventilation is required for heat removal. Ensure ventilation through the

front and rear panels is not impeded and the panels are free of dust and debris.

Ice build up on the cooling coils can act as insulation and lower the cooling

capacity. Raise the temperature of the bath to de-ice the cooling coil and

increase the concentration of non-freezing fluid.

RTE 7 "clicking"

Turn the unit off to initiate the 30 second refrigeration pressure equalization “off”

delay. Turn the unit back on to initiate the 30 second refrigeration pressure

equalization “on” delay.

The RTE 7 is not designed to be used beyond the voltage range or have

momentary power interruptions. Install an “un-interruptible power supply” or a

line loss detection method.

Condensation

A gasket is available to install under the controller in order to prevent any

condensation from leaking into the unit.

Part Numbers:

Gasket, Baffle (RTE 10, 17, 35, 740) 015812

Gasket, Baffle (RTE 7) 084900

Clamp (RTE 10, 17, 35) 093528

Clamp (RTE 7, RTE 740) 036198

Instructions U00922

Continued on next page.
- 40 -

Unit not cooling above 50°C

The unit is not in the Full Range Cooling Mode. See Setup Loop on page 21.

No external circulation

Check for obstructions, kinks, or leaks in the circulation tubing.

Circulation will cease when the pump head has been exceeded.

No/poor temperature control

On Digital Plus controllers, check Serial Communication Mode on or off.

Check controller PID values. See next page for factory preset values.

NOTE: Using high viscosity fluids at low temperatures may require PID adjustment, contact Thermo Fisher. Calibrate internal temperature sensor.

Check optional external sensor connection. Perform calibration.

High Temperature Cutout activated, see page 28.

No serial communications

All units are tested for serial communications before they leave the factory.

Ensure the Computer indicator on the controller is on.

Check all settings and commands, they must be exact. See Appendix B.

Check all wiring for proper connections or possible shorts.

Software to verify serial communication is available from Thermo Fisher.

Service Assistance

If, after following these troubleshooting steps, your unit fails to operate

properly, contact our Service Department for assistance, see Preface. Before

calling, please obtain the following information:

- unit BOM number

- unit serial number

- software version

- voltage of power source

- fluid used

Troubleshooting
- 41 -

Troubleshooting

Digit#

Unit Identifier

271 = R-7

272 = R-10

273 = R-17

274 = R-740

Voltage

03 = 115/60/1

11 = 100/50/1, 100/60/1

25 = 230/50/1

99 = Custom

Pump

20 = Z-Pump

99 = Custom

Controller

00 = Digital One

01 = Digital Plus

02 = Digital Plus w/Analog I/O 10mV/°C 

99 = Custom

Reserved

00

Condenser Cooling Mode

0 = None

1 = Standard Air

9 = Custom

 PID Values

The factory set PID values for most units are:

PI D PI D

Cool 0.6 0.6 0.0 Heat 0.6 0.6 0.0

The factory set COOL PID values for 100V and 115V RTE 740s are:

PI D

Cool 0.4 0.6 0.0

The factory set HEAT PID values for 230V RTE 740s are:

PI D

Heat 1.2 0.6 0.0

Thermo Fisher does not recommend changing the PID values. Incorrect PID

values will hamper unit performance.

BOM Decoder

The Bill of Material (BOM) number helps identify the configuration of your unit.

The number is printed on the label located on the rear of the unit.
- 42 -

Displaying Software

Version Number

(Digital One/Digital Plus)

These values will be needed when calling Thermo Fisher for sales/service

information. The controller can display the installed software version number.

For example, for a unit with software version 082645.1A:

1. Unit is running normally and displaying reservoir fluid temperature.

2. Press and hold No for at least 10 seconds. The display will show the first

two digits, for example: 08.

3. Press 

The display will show the remaining digits to the left of the decimal, for

example: 2645.

4. Press 

The display will show the decimal point and the digit to the right of the

decimal point, for example, 1 .

5. Press 

The display will show the revision letter, as its equivalent number, for

example, 1 = A.

6. Press 

The display will flash between Csu and the software checksum value.

7. Press 

The display returns to the reservoir fluid temperature.
Appendix A

Unfavorably high total ionized solids (TIS) can accelerate the rate of galvanic

corrosion. These contaminants can function as electrolytes which increase the

potential for galvanic cell corrosion and lead to localized corrosion such as

pitting which can be observed at the studs and on the outside surface of

cooling coils. Eventually, the pitting will become so extensive that the coil will

leak refrigerant into the water reservoir.

For example, tap water in the U.S. averages 171 ppm (of NaCl). The recommended level for use in a water system is between 0.5 to 5.0 ppm (of NaCl).

Recommendation: Initially fill the tank with distilled/deionized water. Do not use

untreated tap water as the total ionized solids level may be too high.

Maintain this water quality at a resistivity of between 1 to 10 MOhmcm (compensated to 25°C) by using a purification system. Although the initial fill may

be as high as 18 MOhmcm (compensated to 25°C), the desired level for long

time usage is 1 to 3 MOhmcm (compensated to 25°C).

The above two recommendations will reduce the electrolytic potential of the

water and prevent or reduce the galvanic corrosion observed.

Appendix A Fluids

 Water Quality Standard and Recommendations

Permissible (PPM) Desirable (PPM)

Microbiologicals

(algae, bacteria, fungi) 0 0

Inorganic Chemicals

Calcium <25 <0.6

Chloride <25 <10

Magnesium <12 <0.1

Sulfate <25 <1

Total Hardness <17 <0.05

 A -1
RTE Compatibility with

Recommended Fluids

Filtered/Singled Distilled water

This fluid is recommended primarily because it has all microorganisms that cause biological fouling

removed through vaporizing and condensing the water. However, distilled water does not remain pure

for very long when exposed to the atmosphere. Air-born spores can contaminate the water and

activate algae growth. Chloramine-T is a compatible algaecide that can be used to combat growth but

a more effective maintenance plan would include switching out the fluid with newly distilled water every

six months. The particulates that have been filtered out in the process are also preventative in keeping

the system “clean” of contaminants. Distilling water that contains an additive could increase the

concentration of that additive in the water.

50/50 Uninhibited Ethylene Glycol/Water

Ethylene glycol is used to depress the freezing point of water as a coolant. We recommend not

using the uninhibited (no corrosion additives) above 60°C because it breaks down into acidic byproducts faster at high temperatures. These acidic by-products, especially carbonic acid, are

corrosive to copper. The inhibitors are used to control the corrosion rates by passivating the metal

surfaces with an inert film. Uninhibited ethylene is more corrosive to copper that plain water so

therefore it is not recommended unless it is required for the application.

50/50 Inhibited Ethylene Glycol/ Water

Inhibited glycol can be used to increase the operating temperature range of the fluid but should not

be used as a “pre-mixed anticorrosive” solution. Again, this fluid does break down over time at high

temperatures. Industry standards use a pH standard of 8 to determine when the fluid has become

corrosive. Dowtherm® is an ethylene based product that contains dipotassium phosphates in a 4%

concentration. The recommended use of Dowtherm® is mixing with distilled or deionized water or

water that contains less than 25 ppm chloride and sulfate and less than 100 ppm total hardness of

CACO3. The general term, inhibited glycol/water, is too close to meaning inhibited water. Inhibited

water can have many types of additives including chromate that will foul the cooling system very

quickly.

50/50 Uninhibited Propylene Glycol/ Water

Although the use of this propylene glycol is similar to ethylene glycol, propylene glycol is considered “safe” to use in the food industry. Propylene is less dense than ethylene and therefore will

have a tendency to weep more through mechanical seals.

50/50 Inhibited Propylene Glycol/ Water

Same issues as with uninhibited propylene and uninhibited ethylene glycol.

Deionized Water (1-3 MOhmcm, compensated)

This water has had the conductive ions that cause galvanic corrosion between dissimilar metals

removed. However, since this is not the normal state of water, when it is too pure deionized water

is aggressive to metal. The leaching of metallic ions from the metal surface is seen in pitting.

NEVER use flammable or corrosive fluids with this unit. Do not use automotive antifreeze. Commercial antifreeze contains silicates that can damage the unit. Use of

automotive antifreeze may void the manufacturer’s warranty.

Appendix A

 A -2
Appendix B

Appendix B NC Serial Communications Protocol

NOTE: This appendix assumes you have a basic understanding of serial

communications protocols.

All data is sent and received in binary form, do not use ASCII. In the following

pages the binary data is represented in hexadecimal (hex) format.

The NC Serial Communications Protocol is based on a master-slave model.

The master is a host computer, while the slave is the bath's controller. Only

the master can initiate a communications transaction (half-duplex). The bath

ends the transaction by responding to the master’s query. The protocol uses

either an RS-232 or RS-485 serial interface with the default parameters: 19200

baud, 1 start bit, 8 data bits, 1 stop bit, no parity, and for RS-485 a selectable

address from 1 to 100.

NOTE: Before the unit will communicate, serial communication must be turned

on using the controller's Computer button.

The unit can be controlled through your computer’s serial port by using the

unit's standard female 9-pin connections.

RS-232 RS-485

1 No Connection 1-7 No Connection

2 TX 8 T+

3 RX 9 T4 No Connection

5 Signal Ground

6 - 9 No Connection

To connect the bath to your computer, a M/F 9 pin D-Subminiature extension

cable will be required. See page 31 for cables available from Thermo Fisher.

All commands must be entered in the exact format shown in the tables on the

following pages. The tables on the last page of this Appendix show all commands available, their format and responses. Controller responses are either

the requested data or an error message. The controller response must be

received before the host sends the next command.

The host sends a command embedded in a single communications packet,

then waits for the controller’s response. If the command is not understood or

the checksums do not agree, the controller responds with an error command.

Otherwise, the controller responds with the requested data. If the controller

fails to respond within 1 second, the host should re-send the command.

During RS-485 operation the bath will wait at least 5 milliseconds after receiving the checksum byte before asserting its transmitter for the purpose of

replying to the host. Therefore, when the host is done sending a command, it

must disable its transmitter in less than 5 milliseconds. When the bath is done

sending its reply, it will disable its transmitter in less than 5 milliseconds.

(Digital Plus Only) 9-pin female

 B -1
Appendix B

NC Serial Communications Protocol

NOTE: All byte values are shown in hex, hex represents the binary values that must be sent to the bath. Do not

use ASCII.

The framing of the communications packet in both directions is:

 Checksum region

Lead char Addr-MSB Addr-LSB Command n d-bytes d-byte 1 ... d-byte n Checksum

CA or CC 00

Lead char RS-232 = CA (hex) RS-485 = CC (hex).

Device address is 1 - 64 hex (1 - 100 decimal)

Addr-msb Most significant byte of device address is 00 hex.

Addr-lsb Least significant byte of device address is 01 - 64 hex (1 - 100 decimal) for

RS-485, 01 for RS-232.

Command Command byte (see Table 1).

n d-bytes Number of data bytes to follow (00 to 08 hex).

d-byte 1 1st data byte (the qualifier byte is considered a data byte).

... ...

d-byte n nth data byte.

Checksum Bitwise inversion of the 1 byte sum of bytes beginning with the most significant address byte and ending with the byte preceding the checksum. (To

perform a bitwise inversion, "exclusive OR" the one byte sum with FF hex.)

The master requests information by sending one of the Read Functions as shown in Table 1 on page B-4. Since

no data is sent to the bath during a read request, the master uses 00 for the number of data bytes following the

command byte.

The bath will respond to a Read Function by echoing the lead character, address, and command byte, followed

by the requested data and checksum. When the bath sends data, a qualifier byte is sent first, followed by a two

byte signed integer (16 bit, MSB sent first). The qualifier byte indicates the precision and units of measure for

the requested data as detailed in Table 2.

As an RS-232 example, the master requests to read internal temperature by sending:

If the temperature is 62.5°C, the bath would reply:

CA 00 01 20 03 11 02 71 57

command byte

3 bytes to follow

The checksum is the bitwise inversion of A8

(00+01+20+03+11+02+71) = A8

A8 ^ FF = 57

^ = Bitwise XOR function

The qualifier byte of 11 indicates a precision of 1

decimal point and units of °C. The temperature of

62.5°C is 625 decimal = 271 hex.

CA 00 01 20 00 DE

command byte

0 bytes of data

The checksum is the bitwise inversion of 21

(00+01+20+00) = 21

byte values are in hex

 B - 2
The master sets parameters in the bath by sending one of the Set Functions as shown in Table 1. The master

does not send a qualifier byte in the data field. The master should be pre-programmed to send the correct

precision and units (it could also read the parameter of interest first to decode the correct precision and units

needed).

As an RS-485 example, if the master wants to set the setpoint to 30°C, it would send :

The bath responds:

command byte

2 bytes to follow

The checksum is the bitwise inversion of 22

(00+03+F0+02+01+2C) = 122

Take the LSB = 22

The temperature of 30.0°C is 300 decimal = 012C hex.

CC 00 03 F0 02 01 2C DD

CC 00 03 F0 03 11 01 2C CB

command byte

3 bytes to follow

The checksum is the bitwise inversion of 34

(00+03+F0+03+11+01+2C) = 134

Take the LSB = 34

The qualifier byte of 11 indicates a precision of 1

decimal point and units of °C. The temperature of

30.0°C is 300 decimal = 012C hex.

Appendix B

 B - 3
Appendix B

Table 1 (All bytes are in hex)

RS-232. For RS-485 substitute CC for CA as the lead character.

FUNCTION MASTER SENDS BATH RESPONDS

READ

Read Acknowledge CA 00 01 00 00 FE CA 00 01 00 02(v1)(v2)(cs)

Read Status* CA 00 01 09 00 F5 CA 00 01 09 05(d1)(d2)(d3)(d4)(d5)(cs)

Read Internal Temperature CA 00 01 20 00 DE CA 00 01 20 03(qb)(d1)(d2)(cs)

Read External Sensor CA 00 01 21 00 DD CA 00 01 21 03(qb)(d1)(d2)(cs)

Read Setpoint (control point) CA 00 01 70 00 8E CA 00 01 70 03(qb)(d1)(d2)(cs)

Read Low Temperature Limit CA 00 01 40 00 BE CA 00 01 40 03(qb)(d1)(d2)(cs)

Read High Temperature Limit CA 00 01 60 00 9E CA 00 01 60 03(qb)(d1)(d2)(cs)

Read Heat Proportional Band (P) CA 00 01 71 00 8D CA 00 01 71 03(qb)(d1)(d2)(cs)

Read Heat Integral (I) CA 00 01 72 00 8C CA 00 01 72 03(qb)(d1)(d2)(cs)

Read Heat Derivative (D) CA 00 01 73 00 8B CA 00 01 73 03(qb)(d1)(d2)(cs)

Read Cool Proportional Band (P) CA 00 01 74 00 84 CA 00 01 74 03(qb)(d1)(d2)(cs)

Read Cool Integral (I) CA 00 01 75 00 89 CA 00 01 75 03(qb)(d1)(d2)(cs)

Read Cool Derivative (D) CA 00 01 76 00 88 CA 00 01 76 03(qb)(d1)(d2)(cs)

SET

Set Setpoint (control point)** CA 00 01 F0 02(d1)(d2)(cs) CA 00 01 F0 03 (qb)(d1)(d2)(cs)

Set Low Temperature Limit** CA 00 01 C0 02(d1)(d2)(cs) CA 00 01 C0 03(qb)(d1)(d2)(cs)

Set High Temperature Limit** CA 00 01 E0 02(d1)(d2)(cs) CA 00 01 E0 03(qb)(d1)(d2)(cs)

Set Heat Proportional Band CA 00 01 F1 02(d1)(d2)(cs) CA 00 01 F1 03(qb)(d1)(d2)(cs)

(P = 0.1-99.9)

Set Heat Integral (I = 0-9.99) CA 00 01 F2 02(d1)(d2)(cs) CA 00 01 F2 03(qb)(d1)(d2)(cs)

Set Heat Derivative (D = 0-5.0) CA 00 01 F3 02(d1)(d2)(cs) CA 00 01 F3 03(qb)(d1)(d2)(cs)

Set Cool Proportional Band CA 00 01 F4 02(d1)(d2)(cs) CA 00 01 F4 03(qb)(d1)(d2)(cs)

(P = 0.1-99.9)

Set Cool Integral (I = 0-9.99) CA 00 01 F5 02(d1)(d2)(cs) CA 00 01 F5 03(qb)(d1)(d2)(cs)

Set Cool Derivative (D = 0-5.0) CA 00 01 F6 02(d1)(d2)(cs) CA 00 01 F6 03(qb)(d1)(d2)(cs)

Set On/Off Array CA 00 01 81 088(d1)...(d8)(cs) CA 00 01 81 08(d1)...(d8)(cs)

d1 = unit on/off, d2 = sensor enable, d3 = faults enabled, d4 = mute,

d5 = auto restart, d6 = 0.01°C enable, d7 = full range cool enable,

d8 = serial comm enable (di: 0 = off, 1 = on, 2 = no change)

For example, to turn the unit on send CA 00 01 81 08 01 02 02 02 02 02 02 02 cs

BATH ERROR RESPONSES

Bad Command N/A CA 00 01 0F 02 01 ed cs

Bad Checksum N/A CA 00 01 0F 02 03 ed cs

command bytes shown in bold ed = echo back of the command byte as received

qb = qualifier byte, see Table 3 v1.v2 = protocol version

d1,d2 = 16 bit signed integer of the value being sent or received * See Read Status, Table 2

cs = the checksum of the string (see text) ** limited to the range of the bath

 B - 4
Table 2 Read Status

BIT d1 d2 d3

b.7 = 1 RTD1 Open Fault RTD2 Open Fault High Fixed Temp Fault

b.6 = 1 RTD1 Shorted Fault RTD2 Shorted Fault Low Fixed Temp Fault

b.5 = 1 RTD1 Open RTD2 Open Warn High Temp Fault

b.4 = 1 RTD1 Shorted RTD2 Shorted Warn Low Temp Fault

b.3 = 1 RTD3 Open Fault RTD2 Open Low Level Fault

b.2 = 1 RTD3 Shorted Fault RTD2 Shorted High Temp Warn

b.1 = 1 RTD3 Open Refrig High Temp Low Temp Warn

b.0 = 1 RTD3 Shorted HTC Fault Low Level Warn

BIT d4 d5

b.7 = 1 Buzzer On RTD2 Controlling

b.6 = 1 Alarm Muted Heat LED Flashing**

b.5 = 1 Unit Faulted Heat LED On**

b.4 = 1 Unit Stopping Cool LED Flashing**

b.3 = 1 Unit On Col LED On**

b.2 = 1 Pump On 0

b.1 = 1 Compressor On 0

b.0 = 1 Heater On 0

**LED bits in REQ STATUS1 byte d5

LED State LED Flashing LED On

OFF 0 0

ON 0 1

FLASHING 1 1

Invalid 1 0

b.7 = most significan bit

b.0 = least signifcant bit

Table 3 Qualifier Byte

10 hex 0.1 precision, no units of measure

20 hex 0.01 precision, no units of measure

11 hex 0.1 precision, °C units

21 hex 0.01 precision, °C units

Example: The temperature of 45.6 °C would be represented by the qualifier 11 hex, followed by the 2 bytes 01

C8 hex (456 decimal).

Appendix B

 B - 5
Appendix C International Quick Reference Operating Procedures

 C-1

Verkorte handleiding

Het apparaat heeft een luchtgekoeld koelsysteem.

De luchtinlaat is aan de voorzijde. De luchtuitlaat is

aan de twee zijkanten en aan de achterzijde. Plaats

het apparaat zo dat de luchtaanvoer niet geblokkeerd

is. Bij onvoldoende luchtdoorstroming zal het

koelvermogen afnemen. In extreme gevallen zal de

compressor uitvallen. Een minimale afstand van 12

inches (30 centimeter) aan de voor- en achterkant

van de unit is noodzakelijk voor een goede ventilatie.

Plaats het apparaat niet in stoffige, corrosieve en/of

vochtige ruimtes. Maak het apparaat regelmatig

schoon. Voor een goede werking moet het apparaat

voldoende lucht door de condensor laten stromen.

Een ophoping van stof of andere deeltjes zullen het

koelvermogen nadelig beïnvloeden. Het apparaat zal

de opgegeven specificaties halen tot een

omgevingstemperatuur van ongeveer +77°F(+25°C).

Het voltage moet voldoen aan het opgegeven voltage,

±10%.

De aansluitingen voor de waterslangen zijn gelabeld

en bevinden zich aan de achterzijde. De

aansluitingen zijn naar boven gericht, zodat de

recirculatievloeistof terug in het reservoir stroomt als

de slangen afgekoppeld zijn. Beide connectoren zijn

van roestvrijstaal. De aansluitingen zijn 1⁄4 inch FPT

zodat er standaard aansluitmateriaal gebruikt kan

worden. Voor uw gemak zijn er slangpilaren

bijgesloten.

De slangaansluitingen zijn bevestigd aan de

achterkant van het apparaat en zijn voorzien van het

label en . Deze roestvrijstalen

aansluitingen kunnen aangesloten worden op een 3/8

inch ID flexibele slang. Verwijder de roestvrijstalen

schroefdoppen, indien externe circulatie gewenst is.

Bevestig de aan de ingang van uw applicatie.

Bevestig de aan de uitgang van uw applicatie.

Vul nu het reservoir tot het volgende niveau: tussen

de horizontale markeringen op de roestvrijstalen

scheidingsplaat, die de werkruimte van het

pompgedeelte scheidt.

Gebruik nooit brandbare of andere koelvloeistoffen die

het toestel kunnen beschadigen. De vloeistof die u

gaat gebruiken moet een viscositeit hebben van 50

centistokes of minder bij lage temperatuur werking.

Kraanwater wordt in het algemeen aanbevolen

wanneer u bij temperaturen werkt van +8°C tot

+80°C.

Wanneer u wilt circuleren naar een extern systeem,

dient u altijd extra vloeistof achter de hand te houden

om het juiste vloeistofniveau, zowel in het interne als

het externe gedeelte van het systeem, te handhaven.

Gebruik het apparaat nooit wanneer het reservoir leeg

is.

Het apparaat is voorzien van een afvoer, welke

bevestigd is aan de achterkant van het apparaat.

Operationeel gebruik

Alvorens het apparaat in gebruik te nemen, dient u

eerst alle elektrische- en slangaansluitingen te

controleren. Tevens dient u te controleren of het

systeem gevuld is met koelvloeistof.

Om het apparaat te starten druk op . Om het

apparaat uit te schakelen druk nogmaals op .

Temperatuur Instelling

Druk op om de ingestelde temperatuur te zien. De

indicator licht op en de ingestelde waarde knippert.

Druk op de knop met het pijltje totdat de gewenste

temperatuur is ingesteld. Druk nogmaals op om de

wijziging te bevestigen. De display knippert enkele

malen snel en zal dan weer de actuele temperatuur

laten zien.

Periodiek onderhoud

Controleer regelmatig de vloeistof. Als de vloeistof

ververst moet worden handel dan als volgt: Laat de

vloeistof uit het apparaat lopen. Aan de achterzijde van

het apparaat bevindt zich een afvoerkraantje.

Spoel het reservoir door met een spoelvloeistof die

geschikt is voor het apparaat en de koelvloeistof.

Het is noodzakelijk om de ribben van de condensor

regelmatig schoon te maken met behulp van een

stofzuiger.

Check de condensor maandelijks. Na enige maanden

kunt u de frequentie van het schoonmaken bepalen.
WARRANTY

Thermo Fisher Scientific warrants for 24 months from date of shipment the Thermo Scientific NESLAB RTE unit

according to the following terms.

Any part of the unit manufactured or supplied by Thermo Fisher Scientific and found in the reasonable judgment

of Thermo Fisher to be defective in material or workmanship will be repaired at an authorized Thermo Fisher

Repair Depot without charge for parts or labor. The unit, including any defective part must be returned to an

authorized Thermo Fisher Repair Depot within the warranty period. The expense of returning the unit to the

authorized Thermo Fisher Repair Depot for warranty service will be paid for by the buyer. Our responsibility in

respect to warranty claims is limited to performing the required repairs or replacements, and no claim of breach

of warranty shall be cause for cancellation or recision of the contract of sales of any unit. With respect to units

that qualify for field service repairs, Thermo Fisher Scientific’s responsibility is limited to the component parts

necessary for the repair and the labor that is required on site to perform the repair. Any travel labor or mileage

charges are the financial responsibility of the buyer.

The buyer shall be responsible for any evaluation or warranty service call (including labor charges) if no defects

are found with the Thermo Scientific product.

This warranty does not cover any unit that has been subject to misuse, neglect, or accident. This warranty does

not apply to any damage to the unit that is the result of improper installation or maintenance, or to any unit that

has been operated or maintained in any way contrary to the operating or maintenance instructions specified in

this Instruction and Operation Manual. This warranty does not cover any unit that has been altered or modified

so as to change its intended use.

In addition, this warranty does not extend to repairs made by the use of parts, accessories, or fluids which are

either incompatible with the unit or adversely affect its operation, performance, or durability.

Thermo Fisher Scientific reserves the right to change or improve the design of any unit without assuming any

obligation to modify any unit previously manufactured.

THE FOREGOING EXPRESS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR

IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE.

OUR OBLIGATION UNDER THIS WARRANTY IS STRICTLY AND EXCLUSIVELY LIMITED TO THE REPAIR OR

REPLACEMENT OF DEFECTIVE COMPONENT PARTS AND Thermo Fisher Scientific DOES NOT ASSUME

OR AUTHORIZE ANYONE TO ASSUME FOR IT ANY OTHER OBLIGATION.

Thermo Fisher Scientific ASSUMES NO RESPONSIBILITY FOR INCIDENTAL, CONSEQUENTIAL, OR OTHER

DAMAGES INCLUDING, BUT NOT LIMITED TO LOSS OR DAMAGE TO PROPERTY, LOSS OF PROFITS OR

REVENUE, LOSS OF THE UNIT, LOSS OF TIME, OR INCONVENIENCE.

This warranty applies to units sold in the United States. Any units sold elsewhere are warranted by the affiliated

marketing company of Thermo Fisher Scientific. This warranty and all matters arising pursuant to it shall be

governed by the law of the State of New Hampshire, United States. All legal actions brought in relation hereto shall

be filed in the appropriate state or federal courts in New Hampshire, unless waived by Thermo Fisher Scientific.