User Manual - Bacharach, Inc.
Contents
1. bh The ACHIARAG Difference The Informant Refrigerant Leak Detector Instruction 0019 9210 Operation amp Maintenance Rev 6 May 2010 Quality Products Nationwide Repair Service Technical Training WARRANTY Bacharach Inc warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc e applicable specifications Bacharach s liability and Buyer s remedy under this warranty are limited to the repair or replacement at Bacharach s option of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc s reasonable satisfaction to have been defective provided that written notice of the defect shall have been given by Buyer to Bacharach Inc within one 1 year after the date of delivery of this Product by Bacharach Inc Bacharach Inc warrants to Buyer that it will convey good title to this Product Bacharach s liability and Buyer s remedy under this warranty of title are limited to the removal of any title defects or at the election of Bacharach to the replacement of this Product or parts thereof that are defective in title THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF I ANY AND ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IM PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND2. If the fan is being replaced Discard the old fan and install a new one using the screws removed in Step 5 b If the probe assembly is being replaced Install the old fan onto the new probe using the screws removed in Step 5 Also install the sen sor from the old probe assembly into the replacement probe assem bly refer to Section Sensor Replacement 7 Plug both the probe and fan connectors onto their respective header pins on the printed circuit board as shown in Figure 8 718 Instruction 0019 9210 The Informant Refrigerant Leak Detector Maintenance 8 Position the probe assembly between the two case halves routing the fan wires through the notches in the case as shown in Figure 8 Then reassemble the case push on the front retaining collar screw on the probe tip and reinstall the batteries 9 Turn ON detector then check that it responds in a positive manner to a source of refrigerant gas See Figure 6 for See Figure 7 for instructions on how instructions on how to remove Front S to replace fan Retaining Collar JI O Q h e lo 5 D Le See Figure 8 for electri cal connector detail U L H J Figure 5 Exploded View of The Informant Instruction 0019 9210 19 Maintenance The Informant Refrigerant Leak Detector Pry off fr
3. Warm Up Time ooisssisionnsoeereeeeo Refrigerants Detected Sensor A o A E Cece caateas Battery Luten Visual and Audible Indicators Low Batter Low Sensitivity Mode Relative Refrigerant Level Sensor Failure aracteristics Four AA Alkaline Batteries 10 seconds All CFC HCFC and HFC refrigerants including R 12 R 22 R 123 R 134a and blends R 404A R 408A R 409A and R 410A i e any refrigerant containing Chlorine Fluorine or Bromine gas Heated Diode Dispersive Electron Plug In Typically 150 hours or 1 year of normal use Flexible gooseneck 20 inch 508 mm maxi mum reduces to 3 inches 76 mm when wrapped around instrument includes inte gral sensor filter and LED Probe tip is 0 2 5 mm in diameter and 1 25 mm long 4 5 hours under typical intermittent opera tion Green LED Red LED Amber LED The detector responds to an increasing change in refrigerant level by activating its visual and audible indicators as follows Visual Dual LED bar graphs located on the top and rear of the detector begin to progressively glow in series In addition an LED located in the probe tip begins to increase its blink rate from an idle rate of once per second Audible The audible indicator s tick rate begins to increase from its idle rate of one tick per second The middle refrigerant level LED on both displays glows steady Instruction 0019
4. 9210 Technical Characteristics The Informant Refrigerant Leak Detector Switches Sampling System Flowrate Response Tlnme Sensitivity Normal Sensitivity Adjustment Weight Size excluding probe Probe Length Operating Environment Position Temperature cccceeeseeeeeeees FUGA asiron Approvals Toggles detector ON OFF Toggles audible indicator ON OFF and Toggles Low Sensitivity Mode ON OFF when switch is held down gt second 40 to 50 cc min with sensor installed 0 2 second 0 5 oz year 14 g yr of R134a hardest to detect refrigerant as detected by mov ing probe tip at 2 60 mm per second 0 1 3 mm above leak source A leak rate of less than 0 25 oz year 7 g yr can be de tected when probe tip is held steady over leak source for at least 5 seconds 1 10 of normal Automatic in either sensitivity mode 0 86 lb 0 39 kg w batteries 1 75W x 9 62L x 2 25H inches 44 5 x 244 3 x 57 2 mm 20 508 mm Any 32 to 122 F 0 to 50 C 15 to 90 RH non condensing CE Mark amp UL listed in accordance to SAE J1627 Instruction 0019 9210 The Informant Refrigerant Leak Detector Operation Operation Battery Installation 1 See Figure 2 Using a 1 Phillips screwdriver first loosen the battery door screw located at the rear of the detector then remove the door 2 Install four AA alkaline batteries int
5. that may either attack the detector s ABS plastic case or leave behind a hydrocarbon residue that may desensitize the sensor Instruction 0019 9210 15 Maintenance The Informant Refrigerant Leak Detector Probe Filter Replacement The probe filter is designed to keep dust dirt and water from entering into the sensor area Replace this filter whenever it becomes clogged as evidenced by the detec tor not responding in a positive manner to a source of refrigerant gas Replace the probe filter as follows see Figure 4 Material Required Probe Filter refer to Section Replacement Parts Procedure 1 Turn OFF detector 2 Unscrew probe tip 3 Remove filter from top of sensor and discard 4 Insert replacement filter 5 Reinstall probe tip Sensor Replacement Over time the sensor will become less response to refrigerant gas as it nears the end of its useful life A sensor s average life expectancy is ap proximately 150 hours or 1 year of normal use but will vary depending on the amount of refrigerant that passes through the sensor Replace the sensor as follows see Figure 4 Material Required Sensor refer to Section Replacement Parts 6 Instruction 0019 9210 The Informant Refrigerant Leak Detector Maintenance Procedure 1 Turn OFF detector 2 Unscrew probe tip 3 Remove filter from top of sensor then pull out sensor from its socket and discard 4 Plug in new sensor making sure t
6. the refrigerant level all refrigerant level LED s immediately glow along with the probe tip blink ing and audible indicator ticking at a very rapid rate If movement of the probe is stopped for more than 10 seconds the detector s automatic self zero feature will cause all refrigerant level LED s to turn off along with decreasing the blinking and ticking rate of the probe tip and audible indicator respectively Once the presence of refrigerant has been determined and the detec tor allowed to self zero moving the probe toward the source of the leak will once again cause the detector to respond in a positive manner After Instruction 0019 9210 TT Operation The Informant Refrigerant Leak Detector which if the probe is moved away from the leak source the detector will respond with a lower refrigerant level indication Caution Exposing the sensor to a steady stream of highly concentrated refrigerant will severely reduce sensor life or damage the sensor Sensor life is directly proportional to the amount of refrigerant that passes through the sensor Use the following general procedure to pinpoint the source of a leak 1 Move the probe tip along the refrigerant lines and around the fittings until the detector responds in a positive manner 2 Continue moving in the same direction as long as the instrument re mains at full scale This indicates that the refrigerant concentration is increasing 3 Once the source of t
7. II ANY OBLIGATION LIABILITY RIGHT CLAIM OR REMEDY IN CONTRACT OR TORT WHETHER OR NOT ARIS ING FROM BACHARACH S NEGLIGENCE ACTUAL OR IMPLIED The remedies of the Buyer shall be limited to those provided herein to the exclusion of any and all other remedies including without limitation incidental or consequential damages No agreement varying or extending the foregoing warranties remedies or this limita tion will be binding upon Bacharach Inc unless in writing signed by a duly authorized officer of Bacharach Register Your Warranty by Visiting www mybacharach com Declaration of Conformity Manufacturer s name Bacharach Inc Manufacturer address 621 Hunt Valley Circle New Kensington PA 15068 7074 European operations Bacharach Europe Sovereign House Queensway Leamington Spa Warwickshire CV31 3JR United Kingdom Product name The Informant Leak Detector conforms to the following specifications European Directive 89 336 EEC EN 50081 1 1992 Emissions EN 50082 1 1998 Immunity EN 61000 4 2 1995 Electromagnet EN 61000 4 3 1995 Electromagnet Notice Product improvements and enhancements are continuous therefore the specifications and information con tained in this document may change without notice Bacharach Inc shall not be liable for errors contained herein or for incidental or consequential damages in con nection with the furnishing performance or use of this material No part of this do
8. ant Refrigerant Leak Detector Instruction 0019 9210 5 The Informant Refrig atntresak Detector Features Quickly pinpoints the location of refrigerant leaks e Patented sensor that represents the latest advancements in sensor tech nology e Microprocessor controlled circuitry Dual bar graph LED s located both on top and at the rear of the detec tor provide visual indication of the refrigerant level from a wide variety of viewing angles Audible refrigerant level indicator with mute feature Flashing probe tip refrigerant level indicator e Low sensitivity mode pushbutton selectable Automatic zero and background compensation that allows a leak to be quickly found in contaminated atmospheres without requiring manual sensitivity adjustments Flexible probe that allow it to be either docked in its storage position for close up leak testing or unfolded to its maximum length of 20 inches 508 mm for locating leaks in hard to reach areas Filter in probe tip prevents dust dirt and water from reaching sensor One handed operation e No user calibration required Long life DC brushless fan provides positive airflow past sensor resulting in a faster response time e Batteries included Optional protective rubber boot One year warranty Extended warranty available e Made in U S A Instruction 0019 9210 The Informant Refrigerant Leak Detector Technical Characteristics Technical Ch
9. cument may be photocopied reproduced or translated to another language without the prior written consent of Bacharach Inc Copyright 2000 2010 Bacharach Inc all rights reserved BACHARACH is a registered trademark of Bacharach Inc Informant is a trademark of Bacharach Inc All other trademarks trade names service marks and logos referenced herein belong to their respective companies Contents S IR GUC GH ON oss coisa cece E aah E T N O I R 1 E 2 Technical Characteristics csscccccccscsssssssssscssssssccsscssesssssscsnscnsssesessessscses 3 RTE TE EE 5 Battery Installati n eree nenn E E E ERT RET 5 Turning the Detector ON Ob 5 Low Battery Indication 2 isesscosiedse saved sds siece ENEE SEENEN 6 Audible Indicator Mute 6 Normal Low Sensitivity Mode 6 Procedure for Locating a Refrigerant Leak 7 Sensor Failure Indication ccccecceessssseceeeceeceeceesessessecseceeeceeceeeeenensees 8 False Refrigerant Indication cccccccessssseccecececeeeseesesseseceeeeeeeceseeeseneeas 8 Sensor Flooding Indication cccceesssssesececcececceesensessecaeceecceeceeeeesenseas 9 SAE Leak Detection Tips cccccececseesscseceeecceceeceesenssssecseceeeceeceeesenenseas 9 Wait CN AICO icc fe secede Scceceents eege ege 11 Routine Maintenance scese n ceive Eege 11 Probe Filter Replacement cccccccccecececcececeeceeeeuessaessssssseseeeeeeeeeeeees 12 Sensor Replacement cccccccsse
10. en exposed to high levels of refrigerant Avoid sampling to pure refrigerant for long periods of time Slow gas response time Probe filter clogged Replace Sensor nearly depleted or faulty Crack in rubber sheathing that Internal fan defective Replace filter per Section Probe Filter Replacement Replace sensor per Section Sen sor Replacement covers the probe s flexible tube allowing air to enter through the crack Replace probe assembly per Section Probe Assembly or Fan Replacement fan per Section Probe Assembly or Fan Replacement Erratic gas indication Windy conditions Shut off sur Loose sensor Unscrew probe tip Sensor faulty Replace sensor per Loose printed circuit board con rounding fans protect probe tip from wind switch to low sensi tivity per Section Normal Low Sensitivity Mode and ensure that sensor is being held firmly in socket Section Sensor Replacement nector Disassemble detector and ensure that all connectors are securely attached to the printed circuit board See Figure 8 Instruction 0019 9210 Parts amp Service The Informant Refrigerant Leak Detector Parts amp Service Complete Kits Refrigerant Leak Detector Kit including detector instruction manual 4 AA batteries and soft carrying case 0019 8031 Deluxe Refrigerant Leak Detector Kit including detector instruction manual 6 AA batteries so
11. ft carrying case protective rubber boot and MagLite all packaged in a hard carrying ease ceeeeeseessetteceeeeeeeeeeeeeeneens 0019 8034 Optional Accessories Deluxe Upgrade Kit includes protective rubber boot Maglite 2 AA batteries and a hard carrying case 0019 8037 Protective Rubber Boot provides a protective cover for the Informant that includes a cavity for a MagLite flashlight MagLite not included s 3cecesessasecsaeissssaes saicvacecsseccinederetshec ecesessteces 0019 0497 Hard Carrying Case provides storage for the Informant ANA all accesaoriesg a O EEEN aa Ona NE 0019 0501 Replacement Parts Rate ET I TE E E dete 0019 0502 Front Retaining Collar sisi teccsscsstec s ssnateac stsasaacecesaadsdcceseeaticedsavsanteces 0019 0488 Probe Assembly excluding fan probe tip sensor amp filter 0019 0481 Probe Filter pack Of 5 s issecsssccssccctecevasciectenaslececenavalceeeesasaciceeaasacees 0019 0509 Probe Ke E 0019 0473 Screw Battery Door ccccccccscccscssccescessssececesesseceeessssseeesessseeeeenees 0102 1048 Serew CASE vissesascsisrsndsadabasenawddeessnundsweaboodedecoendadededetasenseetaccnauensensouees 0002 7727 CLOW FAN votecssacsdcaasiaceceseataabicecdadaccsecaadia EENS 0002 7706 DOVISOM Aere 0019 0510 Soft Carryina E 0019 0491 Battery Door Assembly sssssserrsssssssesrrscessrssessssrrerassssssssersrtessrereasss 0019 0591 DA Instruction 0019 9210 The Informant Refrige
12. hat its tab lines up with notch in sensor housing 5 Install filter which was removed in Step 3 on top of sensor 6 Screw on probe tip 7 Turn ON the detector and check that it responds in a positive manner to a source of refrigerant gas SENSOR FILTER _ W D a J J B A LINE UP TAB ON SENSOR WITH NOTCH IN SENSOR HOUSING VIEW A A VIEW B B Figure 4 Probe Filter and Sensor Replacement Instruction 0019 9210 17 Maintenance The Informant Refrigerant Leak Detector Probe Assembly or Fan Replacement Replace the probe assembly or fan as follows see Figures 5 thru 8 Material Required Probe Assembly or Fan refer to Section Replacement Parts e 1 Phillips screwdriver Medium flat blade screwdriver Procedure 1 Turn OFF detector then remove the battery door and batteries 2 Unscrew probe tip and lay aside 3 Using a medium flat blade screwdriver first pry off the front retain ing collar as shown in Figure 6 Then remove the two case screws and pull the case halves apart 4 Unplug both the probe and fan connectors from the printed circuit board being very careful not to damage the pins on the board then remove the probe assembly from the detector 5 Remove fan from probe assembly by removing its three screws as shown in Figure 7 6 Depending on whether the fan or probe assembly is being replaced perform one of the following a
13. he leak has been passed the detector s refrigerant level indicators will all begin to decrease At this point reverse the direction of probing As the probe tip is moved back and forth across the leak the detector will automatically adjust its sensitivity to allow the user to pinpoint its source Sensor Failure Indication A sensor failure is indicated by the middle refrigerant level LED on both displays glowing steady Refer to the Troubleshooting Guide Section of this manual for information on how to clear this condition False Refrigerant Indication False refrigerant indications are usually caused by abnormal changes in sensor temperature These temperature changes are typically due toa sudden change in air flow past the sensor or the sensor being heated by an outside source To avoid false refrigerant indications DO NOT e allow the probe tip to become clogged with dirt allow the probe tip filter to become covered with water rapidly wave the probe tip back and forth e use the detector in windy areas allow the probe tip to contact a hot surface 2 Instruction 0019 9210 The Informant Refrigerant Leak Detector Operation Sensor Flooding Indication When the sensor becomes flooded with a high concentration of refrigerant observe that the gas level LED s quickly light full scale and then all turn off leaving both the audible tick rate and probe tip blink rate at elevated levels When this condition occu
14. mp Service TABLE 1 TROUBLESHOOTING GUIDE Symptom Probable Cause amp Remedy Instrument does not turn on a Batteries are dead or installed backward Install four fresh AA alkaline batteries per Section Battery Installation b Faulty refrigerant sensor Re move sensor and turn on detec tor If detector now turns on replace sensor per Section Sensor Replacement c Loose printed circuit board con nector Disassemble detector and ensure that all connectors are securely attached to the printed circuit board See Figure 8 The middle refrigerant level LED on both displays glows steady Sensor depleted or faulty Replace sensor per Section Sensor Replace ment All gas level LED s momentarily light full scale and then turn off leaving both the audible tick rate and probe tip blink rate at elevat ed levels Sensor flooded with refriger ant Move the detector to an area of fresh air for about 1 minute or until all indicators return to their idle state Short sensor life a Probe filter dirty in turn not allowing enough air to flow over sensor to keep it cool Replace fil ter often per Section Probe Filter Replacement Instruction 0019 9210 The Informant Refrigerant Leak Detector Troubleshooting Guide TABLE 1 TROUBLESHOOTING GUIDE Cont Symptom Probable Cause amp Remedy Short sensor life Cont b Sensor has often be
15. ntly has been found Following any service to the refrigerant system of the vehicle and any other service which disturbs the refrigerant system a leak test of the repair and of the service ports of the refrigerant system shall be done 14 Instruction 0019 9210 The Informant Refrigerant Leak Detector Maintenance Maintenance By following the procedures outlined below The Informant Leak Detector will provide many years of trouble free and dependable operation Routine Maintenance Replace the batteries per Section Battery Installation when the LO BATT LED glows Periodically check the detector s sensitivity by exposing it to a source of refrigerant gas DO NOT check sensitivity by cracking open a bottle of refrigerant or Schrader valve and exposing the sensor to a stream of pure refrigerant This will severely reduce sensor life or damage the sen sor Routinely check the probe filter A dirty filter will lengthen the detec tor s response time or prevent the detection of gas if the filter has become clogged with dirt or covered with water A dirty filter will also shorten the life of the sensor as the result of not allowing enough air to pass over the sensor to keep it cool Replace a dirty or clogged filter per Section Probe Filter Replacement Keep the detector case and probe clean by wiping them with a shop tow el If necessary moisten the towel with a mild detergent solution Avoid using any type of solvents
16. o the detector observing the polarity markings that are molded on the side of the case 3 Reinstall the battery door and tighten its screw LOOSEN BATTERY DOOR SCREW BACHARACH Ir z F The Informant Leak Detector H AA BATTERIES Figure 2 Battery Installation Turning the Detector ON OFF See Figure 3 The detector is toggled ON and OFF by pressing the POWER button When first turned on observe that the Power LED glows and that all other LED s are tested by being turned on for 1 second The detector requires 10 seconds to warm up After which time all LED s should be off except for the Power LED along with the probe tip blinking and audible indicator ticking at approximately once per second Note that during the warm up period the detector has zeroed out any background concentration of vapors or refrigerant that may have been present in the area After the detector is turned on and allowed to warm up it is ready to per form leak testing as described in Section Procedure for Locating a Refrig erant Leak Instruction 0019 9210 9 Operation The Informant Refrigerant Leak Detector Low Battery Indication A low battery condition is indicated when the LO BATT LED glows There will be approximately 20 minutes of full operation time remaining from the time this LED first turns on after which the intensity of all LED s and audible output will gradually diminish When a lo
17. ont retaining collar by inserting a flat blade screwdriver here and twisting When replacing collar ensure that rib inside collar shown here in dotted lines fits into KG slot in bottom of case Fy BOTTOM OF CASE Figure 6 Front Retaining Collar Installation Z Ge SCREW gt Typ 3 places as shown below lt FAN PROBE 4 ASSEMBLY AIR FLOW Figure 7 Fan Installation Instruction 0019 9210 The Informant Refrigerant Leak Detector Maintenance mS IMPORTANT When installing connectors be sure to position their wires as illustrated Route wires from H fan through notches f in case r J 5 PROBE FAN gt j qT f BATTERY Figure 8 Connector Locations on Printed Circuit Board Instruction 0019 9210 21 Troubleshooting Guide The Informant Refrigerant Leak Detector Troubleshooting Guide The following table lists the causes and remedies for the most common problems that may occur with the detector If the information in Table 1 does not solve the problem or for help with any problem that is not listed please contact one of the Bacharach Sales Service Centers listed in Section Parts a
18. rant Leak Detector Parts amp Service Sales Service Centers Replacement parts and service can be obtained by contacting one of the following Bacharach Sales Service Centers United States C OS Bacharach Inc 621 Hunt Valley Circle New Kensington PA 15068 Phone 724 334 5051 Fax 724 334 5723 Email help bacharach inc com Canada Bacharach of Canada Inc 20 Amber St Unit 7 Markham Ontario L3R SP4 Canada Phone 905 470 8985 Fax 905 470 8963 Email bachcan idirect com Instruction 0019 9210 25 The Informant Refrigerant Leak Detector Notes Instruction 0019 9210 EACHARACH Headquarters 621 Hunt Valley Circle New Kensington PA 15068 Ph 724 334 5000 Fax 724 334 5001 Toll Free 800 736 4666 Website www mybacharach com E mail help mybacharach com Printed in U S A ei ISO 9001 2008
19. rs move the detector to an area of fresh air until all indicators return to their idle state SAE Leak Detection Tips The following was derived from SAE Surface Vehicle Standard J1628 Technician Procedure for Using Electronic Refrigerant Leak Detectors for Service of Mobile Air Conditioning Systems The electronic leak detector shall be operated in accordance with the equipment manufacturer s operating instructions e Leak test with the engine not in operation The air conditioning system shall be charged with sufficient refrigerant to have a gauge pressure of at least 340 kPa 49 psi when not in opera tion At temperatures below 15 C 59 F leaks may not be measurable since this pressure may not be reached Take care not to contaminate the detector probe tip if the part being 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 e Visually trace the entire refrigerant system and look for signs of air conditioning lubricant leakage damage and corrosion on all lines hos es and components Each questionable area shall be carefully checked with the detector probe as well as all fittings hose to line couplings refrigerant controls service ports with caps in place brazed or welded areas and areas around attachment points and hold do
20. sssscssnccccecececcsessessnsccuccecessececesessessnaeea 12 Probe Assembly or Fan Bepl cement 14 Troubleshooting Guide sssssscsscscccccceccsssssssssssssecccececssesssessesssaseesees 18 Parto TE 20 Eeer 20 Optional Accegsories 20 Replacement Parts ccs sesscsssvescesndsse ial d ene 20 Sal s Service Centers rcccciscesscesessssnavsvscsvavsveveseoeevsedeccssacacheconsanarscaasensn e 21 The Informant Refrigerant Leak Detector Notes Instruction 0019 9210 The Informant Refrigerant Leak Detector Introduction Introduction The Informant Leak Detector Figure 1 is a portable battery powered instrument designed to pinpoint the location of refrigerant leaks in air conditioning and refrigerant systems chillers or cold storage units The detector is designed to be quickly responsive to all refrigerants even when high levels of background vapors or refrigerant are present No man ual sensitivity adjustments are necessary during the inspection process The detector is suitable for HVAC Service Technicians Refrigerant Ser vice Technicians Plant Maintenance Departments Automotive Service Facilities and Refrigerant amp Environmental Chamber Manufactures who are in need of a small lightweight and rugged detector that is capable of detecting and then pinpointing small to large gas leaks in tight spaces such as those found in refrigeration units and automobile engine compart ments Figure 1 The Inform
21. the LOW SENS LED turns on Return the instrument to its normal sensitivity mode by again pressing and holding down the LOW SENS MUTE button until the LOW SENS LED turns off Procedure for Locating a Refrigerant Leak After the detector is turned on and allowed to warm up observe that none of the refrigerant level LED s should be glowing Also note that both the probe tip should be blinking and the audible indicator ticking once per sec ond All of these indicators show that the detector is currently not detect ing a change in the concentration of refrigerant Important The detector s function is to detect a change in refrigerant level and not to make a quantitative measurement of the that level The technique of locating a leak by detect ing a change in level allows an operator to quickly locate the source of a leak without making manual sensitivity adjust ments or being concerned about the background vapor or refrigerant level in the surrounding area Leak testing can be performed with the probe either docked in its stor age position for close up leak testing or unfolded to its maximum length of 20 inches 508 mm for locating leaks in hard to reach areas Begin leak testing by slowly moving the probe toward the area to be tested If surfaces are dirty or wet wipe them off with a clean shop towel to prevent filter clogging Avoid allowing water to enter the probe tip When the detector first sees an increase in
22. w battery indication occurs replace the batteries as described under the previous Section Battery Installation Audible Indicator Mute The audible indicator s ticking sound can be toggled on and off by momen tarily pressing the LOW SENS MUTE button for less than second ob serve that the LOW SENS LED should not be affected by this operation Normal Low Sensitivity Mode When The Informant is first turned on it defaults to its normal sensitivity mode LOW SENS LED is off Placing the instrument into its low HIGH REFRIGERANT LEVEL LED S Also used to BS REFRIGERANT indicate a LEVEL LED S Ser sensor failure Also used to indicate a sensor failure BATTERY DOOR LOW BATT Us LOW BATTERY LED lt POWER ON LED POWER C Press to toggle unit on off M LOW SENSITIVITY LED LOW SENS Press lt 3 4 sec to toggle mute MUTE Press gt 3 4 sec to toggle low sensitivity mode Q AUDIBLE INDICATOR OPENING TOP CONTROL PANEL Figure 3 Indicators and Controls TO Instruction 0019 9210 The Informant Refrigerant Leak Detector Operation sensitivity mode helps locate a refrigerant leak source when the leak is large or where high winds may affect the instrument s operation Place the Informant into its low sensitivity mode by pressing and holding down the LOW SENS MUTE button until
23. wns on lines and components Always follow the refrigerant system around in a continuous path so that no areas of potential leaks are missed If a leak is found always continue to test the remainder of the system Instruction 0019 9210 13 Operation The Informant Refrigerant Leak Detector At each area checked the probe shall be moved around the location at a rate no more than 25 to 50 mm sec 1 to 2 in sec and no more than 5 mm 0 2 inch from the surface completely around the position Slower and closer movement of the probe greatly improves the likelihood of finding a leak An apparent leak shall be verified at least once by blowing shop air into the area of the suspected leak if necessary and repeating 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 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 an addi tional 15 seconds minimum for the refrigerant to accumulate in the case then inserting the leak detector probe into the blower resistor block or condensate drain hole if no water is present or into the closest opening in the heating ventilation air conditioning case to the evaporator such as the heater duct or a vent duct If the detector activates a leak appar e
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