O P E R A T I N G

TEK-Mate ®
Refrigerant Leak Detector

M A N U A L

Declaration Of Conformity
This is to certify that this equipment, designed and manufactured byINFICON® Inc., 2 Technology Place, East Syracuse, NY 13057 USA
meets the essential safety requirements of the European Union andis placed on the market accordingly. It has been constructed inaccordance with good engineering practice in safety matters in force
in the Community and does not endanger the safety of persons,domestic animals or property when properly installed andmaintained and used in applications for which it was made.
Equipment Description . . . . TEK-Mate® Refrigerant Leak Detector
Applicable Directives. . . . . . 73/23/EEC as amended by 93/68/EEC
89/336/EEC as amended by 93/68 EECApplicable Standards . . . . . EN 61010-1: 1993 EN55011, Group 1,
Class A: 1991 EN50082-1: 1992
CE Implementation Date . . . March 1, 1997
Authorized Representative . Gary W. Lewis
Vice President, Quality Assurance
INFICON Inc.
Any questions relative to this declaration or to the safety of INFICON'sproducts should be directed, in writing to the quality assurance
department at the above address.
WARNING
This symbol is intended to alert the user to thepresence of important operating and maintenance(servicing) instructions in the literature accompanying
the instrument.

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Contents
Declaration Of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TEK-Mate's Features And Specifications . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
How to Install the Alkaline Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
How to Install or Change the Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . 5Using Your INFICON TEK-Mate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
How To Find Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
How To Change the Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cleaning The TEK-Mate's Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Disposing Of The Alkaline Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Authorization Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Replacement Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 10
Warranty and Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Special Information For Automotive Technicians . . . . . . . . . . . . . . . . 11

TEK-Mate®, Toolbox Tough™ and INFICON® are trademarks of INFICON Inc.
DURACELL® is a registered trademark of Duracell Inc.

2TEK-Mate's Features And Speciﬁcations
TEK-Mate combines sophisticated technology with durability for an
instrument with outstanding sensitivity that's Laboratory Accurate,
Toolbox Tough™.
 Electrochemical heated-diode sensor.
 "No-reset" detection of CFCs, HCFCs, and HFCs.
 Automatic adjustment (zeroing) to refrigerants in leak test area.
 Rugged flexible probe with a foam filter for sensor protection.
 High/Low leak-sensitivity and ON/OFF in one switch.
 Variable-pitch audible leak signal.
To get the best performance from your TEK-Mate Leak Detector,
please read this manual carefully before you start using it. If you
have any questions or need additional assistance, please call
800-344-3304. We'll be happy to help you!

Speciﬁcations
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indoor or Outdoor
Minimum sensitivity to R12, R22, and R134a . . . . 0.4 oz/yr (11 g/yr)
Operating temperature range . . . .+32 ˚F to 113 ˚F (0 ˚C to +45 ˚C)1
Storage temperature range . . . +14 ˚F to + 140 ˚F (-10 ˚C to +60 ˚C)
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95% RH NC Max.
Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6500' (2000 m)
Power Supply . . . . . . . . . . . . . . . . . . . Two “D” cell alkaline batteries
Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . Approximately 16 hours
Pollution degree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Overvoltage category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Weight (with power cells) . . . . . . . . . . . . . . . . . . . . 1.28 lb (0.58kg)
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May be operated for a limited time in lower temperature environments.

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Getting Started
1.

Install the batteries and sensor as described below.

2.

Slide the OFF-LOW-HIGH Sensitivity switch to the HIGH
position.

3.

Wait for the TEK-Mate to warm up. A high-pitched audible tone
will be heard and the “LEAK” indicator will be illuminated while
the TEK-Mate is warming up. When this tone changes to a chirp
and the “LEAK” indicator starts flashing, the TEK-Mate is readyto find leaks.

4.

Begin checking for leaks.

The INFICON TEK-Mate Refrigerant Leak Detector provides similar
responses to all CFC's, HCFC's, HFC's and refrigerant blends (i.e.
R-404A, R407c) as well as SF6. There is no need to select therefrigerant you're working with.

How to Install the Alkaline Batteries
1.

Remove the battery cover by releasing the latch and sliding thecover down and off the handle.

2.

Install two “D” size alkaline batteries as shown in Figure 1.

3.

Reinstall the battery cover by aligning it with the handle andsliding it up until the latch engages.

When the batteries are nearing the end of their useful life, the yellow
Low Battery indicator illuminates. While the batteries may operate
the TEK-Mate up to a period of one hour after the Low Batteryindicator illuminates, the batteries should be replaced as quickly aspossible.

4Figure 1. Properly Installed Alkaline Batteries+- +-How to Install or Change the Sensor
A new TEK-Mate is shipped with its sensor packed separately. Thesensor must be installed in the TEK-Mate before use. This
specialized sensor will operate for about 100 hours before it willneed to be replaced.
1.

Remove the rubber sensor cover by lifting at the outer edge.

2.

If you are replacing a worn out sensor, remove the worn outsensor by pulling it straight out of the socket and discard it.
WARNING
If you are replacing the sensor, the worn out sensor
may be hot.

3.

Remove the new sensor from its packaging.

4.

Carefully align the three sensor leads (small wires coming out of
the bottom of the “can”) with the three holes in the sensor socket.
Insert the leads into the holes by gently pressing straight downon the sensor until the sensor leads contact the bottom of thesocket. Be careful not to bend the sensor leads. See Figure 2.

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5.

Reinstall the rubber sensor cover by pressing it down firmly
around the edges. Be sure the edges of the cover are flat against
the surface of the detector.

Figure 2. Installing the Sensor

Using Your INFICON TEK-MateWARNING
Do not operate this instrument in the presence ofgasoline, natural gas, propane, or in othercombustible atmospheres.

How To Find Leaks
NOTE:

A sudden whipping of the leak detector probe or "blowing"
into the sensor tip will affect the air flow over the sensor andcause the instrument to alarm.

1.

Place the tip of the leak-detector probe as close as possible tothe site of the suspected leak. Try to position the probe within 1/4
inch (5 mm) of the possible leak source.

2.

Slowly (approximately 1 to 2 inches/second (25 to 50mm/second)) move the probe past each possible leakage point.

6NOTE:

It is important to move the tip of the probe past theleak. If held on a leak, the auto zero feature will
gradually zero out the leak signal.

3.

When the instrument detects a leak source, it will emit a different
audible tone.

4.

When the TEK-Mate signals a leak, pull the probe away from theleak for a moment, then bring it back to pinpoint the location. If
the refrigerant leak is large, setting the sensitivity switch to LOW
will make it easier to find the exact site of the leak.

5.

Return the sensitivity switch to HIGH before searching foradditional leaks.
NOTE:

6.

When you reset the instrument to HIGH, as when you
turn it on initially, the tone will sound continuously thengive way to a chirp.

When you've finished leak-testing, turn OFF the instrument andstore it in a clean place, protected from possible damage.

How To Change the Filter
The foam filter at the probe tip should be replaced if it becomesplugged with water or oil. To replace the filter, simply pull out the oldfilter (with a paper clip or similar device). Then, push in the new filter.

Cleaning The TEK-Mate's Housing
The TEK-Mate's plastic housing can be cleaned with standard
household detergent or isopropyl alcohol. Care should be taken toprevent the cleaner from entering the instrument. Since gasoline andother solvents may damage the plastic, protect your INFICON
TEK-Mate from contact with these substances.

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Disposing Of The Alkaline Batteries
At the end of the life of a set of alkaline batteries, please dispose ofthem according to applicable state and local regulations. In theabsence of such regulations, Inficon encourages its customers torecycle and/or dispose of the cells through voluntary waste recyclingprograms.

Troubleshooting
Except for the batteries and the sensor, the internal parts of theTEK-Mate Leak Detector are not user serviceable. If you experiencea problem with your TEK-Mate, see the Troubleshooting Table below
to determine how to remedy the problem. If you can not remedy theproblem, take your TEK-Mate to your wholesaler for warranty
evaluation.
PROBLEMCAUSE

REMEDY

1. Poor sensitivity.
The TEK-Mate does
not find leaks.

1a. Sensor has
reached the end of its
useful life.

1a. Replace the sensor. See
page 5.

1b. Power switch set
to LOW instead ofHIGH

1b. Set the Power Switch toHIGH and scan for the leakagain.

2a. Dirty or wet filter.

2a. Replace the filter. See
page 7.

2b. Failure in thepumping system.

2b. Turn the TEK-Mate onand listen for a high-pitchedmotor sound. If you do nothear the motor, return theTEK-Mate to yourwholesaler for warranty
evaluation.

2. The TEK-Materesponds slowly to aleak.

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3. Will not power up.

4. False alarms - theTEK-Mate alarms
when the probe ismoved or bumped.

2c. The sensor cover
is not sealing.

2c. Make sure the sensor
cover is properly installed.
See step 5 on page 6.

3a. Batteries areworn out.

3a. Install a new set ofbatteries. See page 4.

3b. Batteries havebeen improperly
installed.

3b. Check battery
installation as shown in
Figure 1. on page 5.

4a. Sensor leads arebent.

4a. Remove the sensor andinspect the leads. Straighten
the leads with needle nosepliers, if necessary, andreinstall the sensor.

4b. Moisture wasabsorbed by thesensor during a long
period without use.

4b. Run the TEK-Mate for atleast 20 minutes. The
absorption of moisture does
not affect the life orsensitivity of the sensor.

Return Authorization Procedure
All defective TEK-Mates, or defective replacement parts andaccessories, should be returned to your wholesaler for warranty
evaluation. If you have any questions, please contact INFICON at
800-344-3304.
NOTE:

Do not return you defective unit directly to the factory
without first contacting your wholesaler.

9Replacement Parts and Accessories
Replacement parts and accessories for your INFICON TEK-Mate
Refrigerant Leak Detector are available through the same dealer
from whom you bought the instrument.
Plastic storage case . . . . . . 705-401-P2
Replacement sensor . . . . . . 703-020-G1
Tip filters, package of 20 . . . 705-600-G1Warranty and Liability
INFICON warrants your TEK-Mate Refrigerant Leak Detector to be freefrom defects of materials or workmanship for two years from the dateof purchase. INFICON does not warrant items that deteriorate undernormal use, including power cells, sensors and filters. In addition,
INFICON does not warrant any instrument that has been subjected tomisuse, negligence, or accident, or has been repaired or altered byanyone other than INFICON.
INFICON's liability is limited to instruments returned to INFICON,
transportation prepaid, not later than thirty (30) days after thewarranty period expires, and which INFICON judges to havemalfunctioned because of defective materials or workmanship.
INFICON's liability is limited to, at its option, repairing or replacing thedefective instrument or part.
This warranty is in lieu of all other warranties, express or implied,
whether of merchantability or of fitness for a particular purpose orotherwise. All such other warranties are expressly disclaimed.
INFICON shall have no liability in excess of the price paid to INFICON for
the instrument plus return transportation charges prepaid. INFICON
shall have no liability for any incidental or consequential damages.
All such liabilities are excluded.

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Special Information For Automotive Technicians
INFICON's TEK-Mate Refrigerant Leak Detector Model #705-202-G1 isdesign certified by MET Laboratories, Inc. to meet SAE J1627,“Rating Criteria for Electronic Refrigerant Leak Detectors” for R12,
R22, and R134a. The following SAE Recommended Practice applies
to this instrument and to the use of generally available electronic
leak detection methods to service motor vehicle passengercompartment air conditioning systems.
1.

The electronic leak detector shall be operated in accordancewith the equipment manufacturer's operating instructions.

2.

Leak test with the engine not in operation.

3.

The A/C system shall be charged with sufficient refrigerant tohave a gauge pressure of at least 50 PSI (340 kPa) when not inoperation. At temperatures below 59 ˚F (15 ˚C) leaks may not bemeasurable, since this pressure may not be reached.

4.

Take care not to contaminate the detector probe tip if the partbeing tested is contaminated. If the part is particularly dirty, it
should be wiped off with a dry shop towel or blown off with shop
air. No cleaners or solvents shall be used, since many electronic
detectors are sensitive to their ingredients.

5.

Visually trace the entire refrigerant system, and look for signs of
air conditioning lubricant leakage, damage, and corrosion on alllines, hoses, and components. Each questionable area shall becarefully checked with the detector probe as well as all fittings,
hose-to-line couplings, refrigerant controls, service ports withcaps in place, brazed or welded areas, and areas aroundattachment points and hold-downs on lines and components.

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6.

Always follow the refrigerant system around in a continuous pathso that no areas of potential leaks are missed. If a leak is found,always continue to test the remainder of the system.

7.

At each area checked, the probe shall be moved around thelocation, at a rate no more than 1 to 2 inches/second (25 to 50mm/second) and no more than 1/4 inch (5 mm) from the surface
completely around the position. Slower and closer movement of
the probe greatly improves the likelihood of finding a leak.

8.

An apparent leak shall be verified at least once by blowing shop
air into the area of the suspected leak, if necessary, andrepeating the check of the area. In cases of very large leaks,
blowing out the area with shop air often helps locate the exact
position of the leak.

9.

Leak testing of the evaporator core while in the air conditioning
module shall be accomplished by turning the air conditioning
blower on high for a period of 15 seconds minimum, shutting it
off, then waiting for the refrigerant to accumulate in the case fortime specified in step 10, then inserting the leak detector probe
into the blower resistor-block or condensate drain-hole if nowater is present, or into the closest opening in the HVAC case tothe evaporator, such as the heater duct or a vent duct. If thedetector alarms, a leak apparently has been found.

10. The accumulation time for evaporator testing is 13 minutes.
11. Following any service to the refrigerant system of the vehicle,
and any other service which disturbs the refrigerant system, aleak test of the repair and of the service ports of the refrigerantsystem shall be done.

12Laboratory Accurate. Toolbox Tough.
TWO TECHNOLOGY PLACE
EAST SYRACUSE, NY 13057-9714 USA
Phone: +315.434.1100
Fax: +315.437.3803
Email: reachus@inficon.com
www.inficon.com
074-336-P1B

TM