CPN-214-142

Rev. A

Ultrasonic Cleaners

Models 1510, 2510, 3510, 5510, 8510

Operator’s Manual
Warranty

Ultrasonic Cleaners, when used in accordance with manufacturer’s

instructions and under normal use, are guaranteed for two years after

date of shipment. Within the period guaranteed, manufacturer will

repair or replace free of charge, at its sole discretion, all parts that are

defective because of material or workmanship, not including costs for

removing or installing parts.

Liability, whether based on warranty, negligence or other cause, arising

out of and/or incidental to sale, use or operation of the transducer

elements, or any part thereof, shall not in any case exceed the cost of

repair or replacement of the defective equipment, and such repair or

replacement shall be the exclusive remedy of the purchaser, and in no

case will we be responsible for any and/or all consequential or incidental

damages including without limitation, and/or all consequential damages

arising out of commercial losses.

 CAUTION 

• Do not place parts or containers directly on the bottom of the

cleaning tank; use a tray or wire to suspend items.

• Do not allow the solution to drop more than 3/8 inch below the

operating level line with the cleaner on.

• Do not ever use alcohol, gasoline or flammable solutions. Doing so

could cause a fire or explosion. Use only water-based solutions.

• Do not use mineral acids. These could damage the tank.
Contents

Front WARRANTY

Cover

1 Safety Precautions

3 Introduction

3 Ultrasonic Cleaners

4 Accessories

4 Unpacking Your Cleaner

4 Installing Your Cleaner

5 Equipment Specifications

6 How Ultrasonic Cleaning Works

7 Operating Your Cleaner

7 Operating Your MT or MTH Cleaner

10 Operating Your DTH Cleaner

14 Draining Your Cleaner

16 Optimizing Your Cleaner

18 Application Hints

19 Cleaning Methods

21 Cleaning Solutions

24 Troubleshooting

28 Service Information
1 Safety Precautions

 Safety Precautions 

Before using your Ultrasonic Cleaner, please read and thoroughly

understand these safety precautions. Failure to follow them may result in

serious personal injury or property damage.

To avoid electrical shock:

• Do unplug from power source before filling or emptying the tank.

• Do keep the control panel and the area around the cleaner clean and

dry -- wipe up solution which spills over the tank brim. Water and high

voltage can cause electrical shock.

• Do not operate the cleaner without proper grounding.

• Do not remove the grounding prong on the line cord plug.

• Do not disassemble your cleaner -- high voltage inside the cleaner is

dangerous.

• Do not immerse the cleaner in water.

To prevent personal and/or property damage:

• Do operate the cleaner with a vented cover or no cover.

• Do use water-based solutions.

• Do not ever use alcohol, gasoline or flammable solutions. Doing so

could cause a fire or explosion and will void your warranty. Use only

water-based solutions.

• Do not ever use mineral acids. These could damage the tank.

• Do not touch the stainless steel tank or cleaning solution -- they may

be hot.

• Do not allow fluid temperature to exceed 70oC (160oF).

• Do not place your fingers or hands into the tank while the cleaner is

operating. Doing so may cause discomfort and possible skin irritation.

Avoid contact with solutions and provide adequate ventilation.

• Do not use solutions containing chlorine bleach.
2 Safety Precautions

To prevent damage to the cleaner:

• Do change your solution regularly.

• Do not cover vents on the cover.

• Do not operate the cleaner dry.

• Do not place parts or containers directly on the bottom of the cleaning

tank; use a tray or wire to suspend items. Failure to comply may

cause transducer damage and will void your warranty.

• Do not allow the solution to drop more than 3/8 inch below the

operating level line with heat or ultrasonics on. Failure to comply may

cause transducer and/or heater damage and will void your warranty.
3 Introduction

Introduction

Ultrasonic Cleaners

This line of ultrasonic cleaners include five models with sizes ranging

from 1/2 gallons, 3/4 gallons, 1-1/2 gallons, 2-1/2 gallons and 5-1/2

gallons. Each model is constructed using durable industrial style 40kHz

transducers. These provide increased cleaning power along with built in

sweep frequency to ensure uniform cleaning activity throughout the bath.

The 1/2 and 3/4 gallon models have a molded dip in their rims to facilitate

emptying of solution from the tank. The three larger sizes have built in

drains and are supplied with tank drain kits. Each model can be

purchased in three different configurations -- with a Mechanical Timer

(MT), with a Mechanical Timer plus Heat (MTH) and with Digital Control,

plus Heat and Timer (DTH).

When you first fill your unit, or refill it with fresh solution, use warm water

for the solution. Turn on the heater (press the HEAT switch, if available),

turn on the ultrasonics (press SONICS or rotate the Timer knob), add the

cover and the solution will heat quickly to temperature.
4 Introduction

Accessories For Your Cleaner

Accessories include regular and beaker positioning covers, solid and

perforated insert trays, mesh baskets and beakers.

Unpacking Your Cleaner

Please check your cleaner and its carton carefully for any external or

internal damage. If you find damage, contact your shipping carrier

immediately, before contacting your distributor. Please retain your

packaging for future use.

Installing Your Cleaner

Check the plate on the back of the cleaner for correct power

requirements. Position your cleaner within easy reach of a standard

grounded electrical outlet. Do not place the cleaner on a circuit which

could become overloaded.

If your cleaner does not operate correctly, first refer to the troubleshooting

section for possible causes, or contact an authorized service center listed

at the back of this manual, for additional information.
5 Introduction

Equipment Specifications

Tank

Capacity

Tank

Size

Overall

Size

Weight Max

Input

Power

Heater

Power

Max.

Draw

Power

Req.

(Watts)*

1/2 gal.

(1.91 L)

L: 6”

W: 5.5”

D: 4”

L: 10”

W: 12”

D: 11.5”

7 lbs.

(3.2KG)

80W 0

63

63

80

143

143

3/4 gal.

(2.81 L)

L: 9.5”

W: 5.5”

D: 4”

L: 13.5”

W: 12”

D: 11.5”

9 lbs.

(4. KG)

130W 0

109

109

130

239

239

1-1/2 gal.

(5.71 L)

L: 11.5”

W: 6”

D: 6”

L: 16”

W: 12”

D: 14.5”

12 lbs.

(5.4 KG)

130W 0

205

205

130

335

335

2-1/2 gal.

(9.51 L)

L: 11.5”

W: 9.5”

D: 6”

L: 16”

W: 15.5”

D: 14.5”

14 lbs.

(6.4 KG)

185W 0

284

284

185

469

469

5-1/2 gal.

(20.81 L)

L: 19.5”

W:11.5”

D: 6”

L: 24”

W: 18”

D: 14.5”

26 lbs.

(11.8 KG)

320W 0

561

561

320

881

881

NOTE:

• All models have a frequency of 40kHz.

• In DTH cleaners, the temperature readout accuracy is ± 4oC.

• 120V ± 10%, 60Hz is optimum voltage for all cleaners.

• All cleaners have CSA approval and comply with FCC regulations.

• All 220V units meet CE standards.

• * indicates power levels for MT, MTH and DTH cleaners, in that order.

• Units will cause GFI sockets to trip.

• All units have a ground leakage current less than .50ma.
6 Introduction

How Ultrasonics Cleaning Works

Ultrasonic sound is sound transmitted at frequencies generally beyond

the range of human hearing. In your ultrasonic cleaner, ultrasonic sound

(sonics) is used for cleaning materials and parts. This is how it works:

• As the sound waves from the

transducer radiate through the

solution in the tank, they cause

alternating high and low pressures

in the solution.

• During the low pressure stage,

millions of microscopic bubbles

form and grow. This process is

called CAVITATION, meaning

“formation of cavities”.

• During the high pressure stage,

the bubbles collapse, or “implode”

releasing enormous amounts of

energy. These implosions act like

an army of tiny scrub brushes.

They work in all directions, attacking every surface and invading all

recesses and openings.
7 Operating Your Cleaner

Operating Your Cleaner

If this is the first time you are using the cleaner, please read this whole

section before operating your cleaner.

Operating Your MT or MTH Cleaner

MT Cleaner

MTH Cleaner

Explanation of Controls

Control Function

HEAT

(MTH only)

Activates heat to 60oC maximum.

NOTE: Refer to pages 16 and 17 for further

temperature information.

TIMER Activates ultrasonics and sets time.

Use to turn unit Off.

Turn clockwise for variable time 0-60 mins. Turn

counterclockwise to hold position for continuous

operation.
8 Operating Your Cleaner

Before You Start Cleaning

Step Action

1 Select your cleaning solution (refer to page 23 for solution

effects on metals).

2 Allowing for the volume of the parts you will be cleaning and

cleaning solution, fill the tank with warm tap water to the

operating level line (one inch from the top).

3 Add cleaning solution to the tank water.

4 Plug the cleaner into a grounded outlet.

5 For maximum efficiency, refer to page 16, “Optimizing Your

Cleaner” before proceeding.

 CAUTION 

• Do not place parts or containers directly on the bottom of the cleaning

tanks; use a tray or wire to suspend items.

• Do not allow the solution to drop more than 3/8 inch below the

operating level line with the cleaner on.

• Do not ever use alcohol, gasoline or flammable solutions. Doing so

could cause a fire or explosion. Use only water-based solutions.

• Do not ever use mineral acids. These could damage the tank.

Failure to comply with these cautions will void your warranty.

NOTE:

If this is the first time you are running the cleaner, or if you have changed

cleaning solution, you must degas the solution. If not, skip to “Cleaning

Items”.
9 Operating Your Cleaner

Degassing

Step Action

1 Turn the HEAT ON (MTH Cleaner only).

2 Turn the TIMER to 5-10 and let the cleaner run to allow the

solution to “degas”.

NOTE: Refer to page 17 for information on degassing.

Cleaning Items

NOTE: To stop ultrasonics at any time, turn the TIMER to zero.

Step Action

1 Set the TIMER for the amount of time you wish the items to be

cleaned.

2 Place the items into a basket, perforated tray, or beakers in a

positioning cover.

3 If using beakers or a solid tray, add cleaning solution to beakers

or tray to cover the items.

4 Slowly lower the tray or beakers into the tank. Do not allow

items to contact the tank bottom. Do not stir the solution.

5 When items are clean, slowly remove them from the cleaner.

6 Rinse the clean items with clean water and dry them, if

necessary.
10 Operating Your Cleaner

Operating Your DTH Cleaner

Explanation of Controls

Control Function

POWER Press to activate/deactivate power to the cleaner.

ON/OFF After you press SELECT OPTION and set the LED Display

for the selected option, press to activate HEAT (SET TEMP),

SONICS (SET SONICS) and/or DEGAS (SET DEGAS).

LED

Display

Indicates the tank temperature, set temperature, ultrasonics

time or degas time setting, depending on your SELECT

OPTION choice.

SET/

CLEAR

DISPLAY

Used in conjunction with SELECT OPTION to set or clear

the LED display. Press CLEAR DISPLAY to clear the LED

display to 00. Press SET DISPLAY to reach your selection.

SELECT

OPTION

When pressed, toggles through the Function Indicators. This

allows you to check or set the tank temperature and set

ultrasonic cleaning or degas time.

Continued...
11 Operating Your Cleaner

Control Function

Function

Indicators

Lights indicate the option selected by pressing SELECT

OPTION.

SOLUTION TEMP: Displays current solution temp. (10 -

75oC, ± 4oC).

SET TEMP: Set tank temperature (01 - 69oC).

SET SONICS: Set ultrasonic time (01 - 99 mins., 60 mins.

default).

SET DEGAS: Set degas time (01 - 99 mins., 5 mins.

default).

HEAT ONE: Indicates heat is activated and has been set

(SET TEMP).

Before You Start Cleaning

Step Action

1 Select your cleaning solution.

2 Allowing for the volume of the parts you will be cleaning and for

the cleaning solution, fill the tank to the operating level line

(one inch from the top) with warm tap water.

3 Add a cleaning agent to the tank water.

4 Plug the cleaner into a grounded outlet.

5 Turn the POWER switch On. The cleaner will run through a

three-second self-test. Wait until the LED Display shows 05

and the SET DEGAS Function Indicator lights.
12 Operating Your Cleaner

Degassing

Step Action

1 Degas for 5-10 minutes. If necessary, use SET/CLEAR

DISPLAY to alter this setting. Default degas time is 5 minutes.

NOTE: Refer to page 17 for information on degassing.

2 Press ON/OFF once to start the degas process.

3 After completing the degas time, you are ready to set operating

parameters.

Setting Operating Parameters

Step Parameter Action

1 Set Time The cleaner is now in Set Time mode with a

default time of 60 mins. If necessary, use

SET/CLEAR DISPLAY to alter this setting.

Press ON/OFF once to activate timed

ultrasonics.

2 Set Temp. To set the tank temperature, press SELECT

OPTION until the SET TEMP LED lights. Then

press SET DISPLAY to alter the setting until the

LED display indicates the tank temperature you

wish to maintain. Press ON/OFF once to

activate heat. The heat indicator lights.

3 Solution

Temp.

To monitor the solution temperature, press

SELECT OPTION until the SOLUTION TEMP

LED lights. The LED display will indicate the

actual temperature of the solution.

NOTE:

If this is the first time you are running the cleaner, or if you have changed

cleaning solution, you must degas the solution. If not, move to Setting

Operating Parameters.
13 Operating Your Cleaner

Cleaning Items

NOTE: Select Set Time then press ON/OFF once to stop ultrasonics at

any time.

Step Action

1 Place the items into a basket, perforated tray, or beakers in a

positioning cover.

2 If using beakers or a solid tray, add cleaning solution to

beakers or tray to cover the items.

3 Slowly lower the tray or beakers into the tank. Do not stir.

4 Press ON/OFF once to activate ultrasonics.

5 When the items are clean, press ON/OFF once to deactivate

ultrasonics, then slowly remove the items from the cleaner.

6 Rinse clean items with clean, warm water and dry, if

necessary.

 CAUTION 

• Do not place parts or containers directly on the bottom of the cleaning

tank; use a tray or wire to suspend items.

• Do not allow the solution to drop more than 3/8 inch below the

operating level line with the cleaner on.

• Do not ever use alcohol, gasoline or flammable solutions. Doing so

could cause a fire or explosion. Use only water-based solutions.

• Do not ever use mineral acids. These could damage the tank.

Failure to comply with these cautions will void your warranty.
14 Operating Your Cleaner

• To repeat a timed cleaning cycle - press ON/OFF once while in the

Set Sonics mode. This cleaning cycle time will remain in memory until

reset or you turn off the power to the cleaner.

• To reset ultrasonics time during a cleaning cycle - press ON/OFF

once, press SELECT OPTION until the SET SONICS LED lights. To

increase time, press SET DISPLAY to your desired setting. To

decrease time, press CLEAR DISPLAY, press SET DISPLAY to set

the time, then press ON/OFF once to resume the cycle.

• To monitor the solution temperature - press SELECT OPTION until

the SOLUTION TEMP LED lights. The LED Display will display the

solution temperature in degrees Centigrade (± 4oC). The cycle will

continue during this process.

Draining Your Cleaner

1⁄2 and 3⁄4 gallon models do not have a drain. To empty, use the

indented side of the rim to pour the used solution into a waste disposal

unit, rinse the tank thoroughly and refill with new solution.

 WARNING 

Do not immerse the cleaner in water.

Unplug the cleaner from the power source.
15 Operating Your Cleaner

1-1/2, 2-1/2 and 5-1/2 gallon models include a drain and valve kit.

Step Action

1 Place the cleaner to allow easy reach of the drain tube into a waste disposal

unit.

2 Remove the thread protecting cap from the end of the cleaner’s drain pipe.

This will expose the white teflon sealing tape on the drain pipe’s threads.

3 Hand tighten the drain valve onto the drain pipe over the white teflon sealing

tape. Finish tightening the valve in place using on adjustable or a 21mm

wrench. Tighten the valve no more than one full turn when using the wrench

until the handle is on top.

CAUTION: Over tightening of the valve can cause damage to the ultrasonic

tank. Always use teflon sealing tape or a sealing paste designed for use with

stainless steel if retightening or refitting of the drain valve is required.

4 Hand tighten the hose adaptor into the end of the drain valve. Slide the drain

tube over the barbed hose adaptor end.

5 Close the drain valve by turning the handle perpendicular to the valve body

and the cleaner is ready to fill with solution. To open the valve and drain the

cleaner, turn the handle so that it is in line with the valve body.
16 Operating Your Cleaner

Optimizing Your Cleaner

Tanks

Cleaning - check the tank for contamination whenever you change

solution. If necessary, remove contaminants with a nonabrasive cloth

and water.

Emptying - always unplug the cleaner before emptying the tank. Empty

the solution into a waste disposal unit.

Filling - always unplug the line cord before filling the tank. Fill the

cleaner to the operating level (one inch from the top with beaker/tray in

place), using warm tap water.

Low solution level - will cause the cleaner to fail. When you remove

heavy or bulky loads from the cleaner, the solution level may drop below

the operating level. If so, be sure to replace lost solution and degas, if

necessary, depending on the amount used.

Overload - do not rest any items on the tank bottom. Weight on the tank

bottom dampens sound energy and will cause damage to the transducer.

Instead, use a tray and/or beaker positioning cover to support all items.

Allow at least one inch between the tank bottom and the beaker or

receptacle for adequate cavitation.

Covers - allow the cleaner to heat up faster, to a higher temperature, and

avoid excessive liquid evaporation. However, obstructing the cover vents

will cause the cleaner to overheat.

Temperature

Heater - the heater may cause some discoloration of the tank wall. This

is normal and will not affect the performance of the unit.

Solution - the fastest method to heat your cleaner is to fill with warm

solution, use heat, ultrasonics (which also adds heat), and a cover.

Approximate stabilization temperatures with ultrasonics and heat running

continuously:

MTH/DTH cleaner without a cover 50o

MTH/DTH cleaner with a cover 62o

continued...
17 Operating Your Cleaner

Over temperature protection (DTH only) - the cleaner will shut down at

75oC and the LED display will blink “75”. Turn the cleaner off and allow it

to cool down. For a faster cooldown, replace some of the warm solution

with cold solution.

Solution

Solution activity - the amount of visible activity is not necessarily related

to optimum cavitation for cleaning.

Degassing - fresh solutions contain many dissolved gases (usually air),

which reduce effective ultrasonic action. Although solutions will naturally

degas over time, using Degas mode speeds up the degassing process.

Solutions that have been sitting unused for 24 hours or longer have

reabsorbed some gases.

Heat - increases the chemical activity of cleaning solutions.

Surface tension - can be reduced by adding solution to the bath.

Reduced surface tension will increase cavitation intensity and enhance

cleaning.

Solvents - never use solvents. Vapors of flammable solutions will collect

under the cleaner, where ignition is possible from electrical components.

Renewal - replace cleaning solutions often to increase ultrasonic

cleaning activity. Solutions, as with most chemicals, will become

depleted over time. Solutions can become contaminated with suspended

soil particles which coat the tank bottom, inhibiting ultrasonic activity.
18 Operating Your Cleaner

Application Hints

First time cleaning - first experiment with one piece, then proceed with

the remainder.

Solution level - Be sure to maintain solution level within 3/8 inch of the

tank’s “operating level” line. Surface activity can vary with liquid level.

Load size - It is faster and more efficient to run several small loads

rather than a few big loads.

Placing items - Never allow items to sit on the bottom of the tank.

Always place them in a tray or beaker or suspend in the solution.

Rinsing items - After cleaning, use a clean water bath to rinse away

chemicals adhering to items.

Lubricating items - When necessary, re-lubricate items immediately

after cleaning.

Drying items - Air drying at room temperature works for some items.

Place parts requiring faster drying time under hot air blowers or in ovens.

Please call your local distributor if you have application questions.

 CAUTION 

• Never clean novelty or inexpensive jewelry in the cleaner. The

combination of heat and vibration may loosen a cement-held setting.

• Never clean gemstones such as emerald, amethyst, pearl, opal, coral,

turquoise, peridot or lapis lazuli in the cleaner.
19 Operating Your Cleaner

Cleaning Methods

There are two methods of cleaning - direct and indirect. Each has

advantages and disadvantages. When in doubt, run test samples using

both methods to decide which one produces the best results for you.

Direct Method

How it works:

• Fill the tank with warm water and a cleaning solution.

• Place the items to be cleaned in a perforated tray and lower them into

the tank. You can also suspend items on a wire and then immerse

them in the solution.

The advantages of this method are the simplicity of operation and

cleaning effectiveness.
20 Operating Your Cleaner

Indirect Method

How it works:

• Fill the tank with warm water and a cleaning solution.

• Pour your solution medium into one or more beakers or into a solid

insert tray.

• Place the beakers in a beaker positioning cover or a solid insert tray to

fit your cleaner. Beakers should not touch the tank’s bottom.

The advantages of this method are:

• Removed soil stays in the beaker or tray so you can easily examine,

filter or discard it.

• You can use one or more solutions at the same time.

- two completely different cleaning solutions.

- one beaker or tray with a cleaning solution and one with a rinse

solution.

• Cleaning solution in your tank needs to be changed less often.
21 Operating Your Cleaner

Cleaning Solutions

Solution Types

Water-based solutions are either slightly acidic or alkaline. They include

detergents, soaps and industrial cleaners designed to remove specific

soils.

Acidic water-based solutions: remove rust, tarnish or scale. They

range from mild solutions that remove tarnish, to concentrated, inhibited

acidic solutions that remove investment plaster, milk-stone, zinc oxide

and rust from steel and cast iron as well as smut and heat-treat scale

from hardened steel.

Alkaline water-based solutions: include carbonates, silicates and

caustics. These cause emulsifying action, which keeps soil from

redepositing on the cleaned surface, and improves cleaning action in

hard water.

Alkaline strength Removes:

Mild Light oils and greases, cutting oils and coolant

compounds.

Mild to strong Heavy grease and oil, waxes, vegetable oils, inks,

wax or fat-base buffing and polishing compounds,

milk residues and carbohydrates.

Heavy-duty Mill scale, heat-treat scale, corrosion or oxides.

 CAUTION 

Do not use alcohol, gasoline, bleach, mineral acids, solutions with a flash

point, semi-aqueous or combustible liquids in ultrasonic tanks, or you will

void the warranty. Only use non-flammable solutions and water-based

solutions.
22 Operating Your Cleaner

Change the cleaning solution periodically. Cleaning solutions can

become contaminated with suspended soil particles which coat the tank

bottom. This coating dampens the ultrasonic action and reduces

cleaning efficiency. Certain solutions will cavitate better than others.

Contact your local distributor for further information.

Heat and cavitation: increase the chemical activity of cleaning

solutions. Some materials may be damaged by this stronger chemical

action. When in doubt, test run samples of items to be cleaned.

Caustic solutions: used to remove rust from steels, metal alloy

corrosion and a variety of tenacious soils.

Solution Amounts

Solution amounts may vary. The amount you use depends on the

detergent and the type of soil to be removed. Follow instructions on the

solution container and refer to the table below for the effects of solutions

on metals.

Chemicals Harmful to Your Tank

The following chemicals will harm your ultrasonic tank and the action of

ultrasonics and higher operating temperatures will increase their

chemical activity. Do not use these or similar chemicals directly or in

dilution in your ultrasonic tank or you will void your warranty.

Acetophenone Chloracetic Acid Hydrocyanic Acid

Aluminum Chloride Chloric Acid Hydrofluoric Acid

Aluminum Fluoride Chlorine, Anhydrous Hydrofluosilicic Acid

Aluminum Sulphate Chromic Acid Iodoform

Ammonium Bifluoride Copper Chloride Mercuric Chloride

Ammonium Chloride Copper Fluoborate Muriatic Acid

Ammonium Hydroxide Ethyl Chloride Phosphoric (crude)

Amyl Chloride Ferric Chloride Sodium Hypochlorite

Antimony Trichloride Ferrous Chloride Potassium Chloride

Aqua Regia Ferris Sulfate Stannic Chloride

Bromine Fluoboric Acid Stannous Chloride

Calcium Bisulfate Fluorine Sulfur chloride

Calcium Bisulfite Hydrobromic Acid Sulfuric Acid

Calcium Hypochloride Hydrochloric Acid Zinc Chloride
23 Operating Your Cleaner

Solution Effects on Metals

Cleaning

Agent

Steel Brass AluminumMagnesiumZinc S. Steel

Copper

Tin

Optical (1) none none none none** none** none none**

Jewelry (1) none none none none none none none

Buffing (1)

compound

none slight

stain

none none attacks none none

Oxide (2)

remover

slight

etch

none slight

attack

attacks attacks none none

Electronic

cleaner (1)

none none slight

attack

none none none none

General(1)

purpose

none none slight

attack

none none none none

Industrial

strength(1)

none none slight

attack

none none none none

Metal (1)

cleaner 1

none none none none none none none

Metal (1)

cleaner 2

none none slight

attack

none none none none

Metal (1)

cleaner 3

none none none none none none none

Rust (3)

stripper

none none attacks attacks attacks none slight

attack

(1) = Alkaline; (2) = Acidic; and (3) = Caustic.

** No effect if solution temperature is less than 140oF.

 WARNING 

*Free hydrogen may be released

if solution comes in contact with reactive metals.
24 Troubleshooting

Troubleshooting

If your cleaner does not operate satisfactorily, please check the tables

below for possible causes before calling your authorized service center.

Problem Cause What to do

Cleaner

will not

start.

Cleaner not plugged in

properly.

MT - Mechanical timer not

ON.

DTH - POWER switch not

ON.

DTH - Start button

malfunctioning.

Blown fuse.

Plug into functioning

electrical outlet.

Turn timer clockwise.

Press power switch ON.

Call nearest authorized

service center.

Call nearest authorized

service center.

Cleaner

operates

but does

not heat

solution

Heater malfunctions.

MTH - HEAT not ON.

DTH - HEAT not set

properly.

DTH - membrane

malfunctioning.

Call nearest authorized

service center.

Turn heat ON

See Operating Your DTH

Cleaner.

Call nearest authorized

service center.

Clogged

drain

Clogged drain. Call nearest authorized

service center.

 WARNING 

High voltage inside - dangerous shock hazard.

DO NOT attempt to disassemble or repair the cleaner.
25 Troubleshooting

Problem Cause What to do

Cleaner

operates but

does not

maintain set

temperature

Malfunctioning heater or

sensor components.

Call nearest authorized

service center.

Cleaner

operates but

display does

not function.

Interrupted calibration

sequence.

DTH - timer board

malfunctioning.

Press SET DISPLAY

Call nearest authorized

service center.

Cleaner

stops

operating

and display

blinks “75”.

Overheat condition. Turn cleaner off. Allow

cleaner to cool, check

solution level, then restart.

Refer to Optimizing Your

Cleaner.

Decreased

ultrasonic

activity.

NOTE:

Refer to

page 27 for

cavitation

check.

Solution is not degassed.

Solution is spent.

Solution level is incorrect

for load.

Tank bottom is covered

with soil particles.

Using deionized water in

the tank.

Make sure that tank was

filled with warm tap water

plus cleaning solution and

has run 5-10 minutes.

Change solution.

Adjust solution to within 3/8

inch of the tank’s operating

level line with load.

Empty, then clean tank with

warm water. Wipe with a

nonabrasive cloth.

Deionized water does not

cavitate as actively as

soapy tap water.

 WARNING 

High voltage inside - dangerous shock hazard.

DO NOT attempt to disassemble or repair the cleaner.
26 Troubleshooting

Check your cleaner periodically to test the level of activity of the

ultrasonic cavitation. Frequency of testing will depend on your use of the

cleaner.

Glass Slide Test

You will need the following equipment:

• Frosted microscope glass slide (1” x 3”), such as ESCO #2951F, or

equivalent;

• No. 2 lead pencil; and

• General purpose household cleaning solution, such as “Dawn” liquid

soap.

Test procedure:

1. Prepare a fresh solution with general purpose household cleaning

solution (concentration 1%) and warm tap water (120o - 140oF).

2. Fill the cleaner to within 3/8 inch of the “operating level” line.

3. Turn the ultrasonics on for at least five to ten minutes to allow for

degassing.

4. Prepare the glass slide by first wetting the frosted portion with tap 

water.

5. With the No. 2 pencil, on the frosted portion make an “X” from corner

to corner.

6. Immerse the frosted end of the slide into the solution. Hold the slide

vertically and center it in the solution.

7. Make sure that model DTH cleaners are in SET SONICS mode, not

degas mode, then turn ultrasonics On.
27 Troubleshooting

The ultrasonics will begin immediately to remove the lead from the slide.

All lead should be removed within 10 seconds. If your cleaner passes

this test, its ultrasonic cavitation is acceptable.

NOTE:

To ensure consistency from test to test, be sure to repeat

test conditions - use the same solution concentration, liquid level,

temperature, type of pencil, length of degassing, etc.
28 Service Information

Service Information

With normal use, your Ultrasonic Cleaner should not require servicing.

However, if it fails to operate satisfactorily, first try to diagnose the

problem by following the suggestions in the Troubleshooting Guide.

If you find that your cleaner needs repair, carefully pack and return it to

your local distributor. If under warranty, remember to include proof of

purchase.

Your cleaner will be shipped by ground service unless you specify

otherwise.

 WARNING

You will void the warranty if you disassemble your

cleaner. High voltage inside the cleaner is dangerous.
Authorized Service Centers

Authorized Service Centers

Name Address Tel/Fax Number

Alpha Omega

Electronics Corp.

2821 National Drive

Garland, TX 75041

Tel: 972-271-5569

Tel: 1-800-540-4967

Fax: 972-840-3668

Crystal Electronic Inc. 140 Centre Street

Aurora

Canada L4G 1K0

Tel: 905-841-5762

Fax: 905-841-9688

Paragon Electronics 11075 N.E. 6th Ave.

Miami, FL 33161

Tel: 305-757-0631

Fax: 305-754-6877

Master Sonics

Repair Center

445 West Queen St.

Southington, CT 06489

Tel: 800-737-2198

 860-621-9466

Fax: 860-621-0283
Notes:
Technical Support:

Branson Ultrasonics

Corp.

41 Eagle Road

P.O. Box 1961

Danbury, CT 06813-1961

Tel: 203-796-0339

Tel: 203-796-0557

Fax: 203-796-2240