User Manual
Contents
1. Special Notes R 410A is a replacement refrigerant for R 22 Its physical properties however are much different than R 22 R 410A has a higher vapor pressure and is more dense than R 22 These characteristics make recovering R 410A more difficult by putting more of a load on the compressor Please follow the instructions below to ensure trouble free R 410A recovery Note Hose connections are the same for recovering R 410A Connect hoses as shown in the vapor recovery diagram below Under normal operating conditions the STINGER can recover R 410A just like R 22 Under certain conditions however because of R 410A s higher vapor pressure and density you will have to take the following precautions A CAUTION USE ONLY DOT RECOVERY CYLINDERS APPROVED FOR USE WITH R 410A Overfilling or over pressurizing your recovery cylinder is extremely dangerous WHEN RECOVERING VAPOR If the STINGER sounds like it is overloaded either by slowing down or by making a knocking sound reduce the inlet pressure by closing or throttling the inlet valve until the STINGER begins to run normally WHEN RECOVERING LIQUID If a loud knocking noise occurs the inlet pressure on the STINGER should be throttled back by slowly closing the inlet valve until the knocking noise stops This action will prevent compressor damage Throttle back the inlet pressure if a Knocking noise occurs when recovering liquid R 410A CONNECT TO HIGH SIDE 22. STINGER High Performance Oilless Commercial Refrigerant Recovery Unit User Manual LT IL PERFORMANCE CERTIFIED m ARI Standard 740 2090 0217 Rev 2 June 2009 Introduction Congratulations on your purchase of the STINGER high performance oilless recovery unit Bacharach has worked hard to make the STINGER the highest performing most portable and easiest to use recovery unit on the market We are committed to your complete satisfaction CAUTION These instructions are for personnel trained and experienced in the handling of refrigerants Unqualified individuals should not attempt to operate this equipment Failure to follow proper operating procedures may cause personal injury WARNING Inhalation of high concentrations of refrigerant vapors is harmful and may cause heart irregularities unconsciousness or death Deliberate inhalation of refrigerants is extremely dangerous and death can occur without warning Vapors reduce oxygen available for breathing and are heavier than air Decomposition products are hazardous Liquid contact may cause frostbite All refrigerant containers equipment and hoses are under pressure CAUTION Before operating this unit please read this manual in its entirety It is important that you have a thorough understanding of the procedures outlined in this manual Failure to follow these procedures could void all manufacturer warranties WARNING This unit is capable of over
3. LOW SIDE OR BOTH A Na SERVICE PORTS Q HVAC UNIT APPLIANCE CONTAINING REFRIGERANT OPTIONAL 80 TANK FULL SHUTOFF CORD Use the proper x R 410A cylinder WEIGH SCALE IN LINE FILTER P N 07 1700 OPEN COMPRESSOR 14 Purging the STINGER The STINGER is equipped with a pump down purge valve that allows the technician to pump down or evacuate the STINGER before proceeding to the next recovery operation This procedure not only eliminates cross contamination but also conserves refrigerant Follow the steps below to ensure your pump down operation is performed correctly During the purge operation the entire STINGER is pulled into a vacuum leaving no more than 0 1 ounce of refrigerant in the unit STEPS 1 After recovery operations are complete and with the unit still powered ON and running make the following control valve position changes refer to illustration below Turn the inlet valve blue knob left side slowly to the PURGE position pointer DOWN position Turn the purge valve black knob center slowly to the PURGE position pointer DOWN position 2 The STINGER will now start purging itself of refrigerant Allow the unit to run until the inlet gauge indicates that there is an adequate vacuum present in the system 3 Turn OFF the STINGER and then turn the outlet valve red knob right side to its CLOSED position 4 Close the Vapor and Liquid valves on t
4. proper hose connections for liquid push pull recovery as shown in the diagram on Page 12 A CAUTION If the 80 tank full shutoff cord is not used then use a scale to monitor the refrigerant level in the recovery cylinder in order to prevent overfilling A CAUTION When recovering R 410A you must use a recovery cylinder approved for use with R 410A Standard recovery cylinders with 350 psi working pressures are not approved for use with R 410A 3 the inlet and outlet valves to their OPEN position and the PURGE valve to its PURGE position Note The PURGE position bypasses the condenser optimizing the push pull flow rate 11 Liquid Push Pull Operations 4 Open both the vapor and liquid valves on the DOT recovery tank 5 ON the STINGER The compressor will begin to pull vapors from the cylinder and push the liquid out of the system and into the recovery cylinder 6 If a sight glass is being used you should watch it to determine when all of the liquid has been removed from the system 7 The liquid push pull recovery method will not pull a vacuum in the system You must turn OFF the STINGER and reconfigure the hoses for vapor recovery operations as described on Page 9 RECOVER PURGE CLOSED OPEN o PURGE HVAC UNIT APPLIANCE CONTAINING REFRIGERANT HOT VAPOH y LIQUID LIQUID OPTIONAL SIGHT GLASS OPEN OPEN VAPO
5. 80 tank full shutoff cord is present but not being used then a shorting cap must be installed on the shutoff cord in order for the STINGER to operate Bacharach uses and recommends the Air Conditioning amp Refrigeration Institute s ARI Guideline K for the safe filling and handling of used refrigerant This Publication is available from ARI at http www ari org The following information provides the safe fill weights for used refrigerant based on the size of the container and is in accordance with Guideline K WATER NET REFRIGERANT GROSS CONTAINER CAPACITY WEIGHT WEIGHT APPROX 30 Ibs 24 lbs 38 Ibs 50 lbs 40 lbs 59 lbs 95 Ibs 76 Ibs 118 lbs 145 Ibs 98 Ibs 153 lbs 238 6 190 Ibs 2 4 16 Recovery Tips e Use the shortest hoses possible Long hoses increase the recovery time Remove all restrictions in the hoses Hoses with ball valves on the ends are better than hoses that are self sealing Remove Schrader core valves when possible from service ports e Always identify the refrigerant you are recovering This will minimize cross contamination and help you plan for the amount of refrigerant you will be recovering e Always pump liquid out of the system first and then recover the remaining vapors This will significantly speed up recovery rates e With large amounts of refrigerant use the liquid push pull recovery method This method is three times faster than recovering liquid directly Refer to the liquid push pu
6. pressurizing a DOT recovery cylinder Ensure that you are using the proper DOT recovery cylinder for the refrigerant that you are recovering NOTE R 410 is capable of pressures exceeding 600 psi Typical DOT recovery cylinders are rated at 350 psi with a pressure relief set at 550 psi These cylinders should not be used with R 410A Only cylinders rated at 400 psi with the relief valve setting at 600 psi should be used to for R 410A Failure to use the proper cylinder can be extremely dangerous BEFORE handling refrigerants read the material safety data sheet from the refrigerant manufacturer STINGER Specifications STINGER R 12 R 22 R 114 R 134a R 401A R 401B R 401C R 402A R 402B R 404A R 406A R 407A R 407B R 407C R 407D Compatible R 408A R 409A R 410A R 411A R 411B R 412A R 500 R 502 R 507 R 509 110 120 VAC 1 Phase 50 60 Hz 8 Amps See label on e 230 VAC 1 Phase 50 60 Hz 5 or 10 Amps back of unit 34 HP High Performance Oilless High pressure cutoff at 550 psi Compressor is protected by Protection circuit breakers and internal compressor thermal sensor Optional 80 tank full shutoff kit P N 2090 0091 Pressure Low Side design pressure 450 PSI Ratings High Side design pressure 550 PSI Operating Range 32 to 104 F 10 to 40 C Blow Molded High Impact Polyethylene Size Weight Length 17 Certification Complies with UL1963 not evaluated for automotive use Refrigerant Recovery Rates
7. x TIAM 2081 0310 5 Piston Cup Seal Retainer _ 2043 0020 6 Piston Cup Seal 1 1 2081 0270 7 o O 2081 0400 8 Piston Journal Bearing 11 20810200 9 Crank y O 2077 0940 10 Gasket 1 2081 0300 11 CrankHousingEndCover 20511920 12 Screw 5 1 4 2081 0390 13 Shim 0 002 o 1 2081 0420 14 Shim 0 003 2081 0430 15 Shim 0 00 JJ 1 2077 0950 16 O Ring 026 0 0 1 2081 0290 17 Cylinder 1 2090 0039 18 Valve Plate Assembly 1 2081 0280 19 Cylinder Head 1 20511910 20 Screw M5x 50MM 4 2090 0040 21 Motor Brushes 20900041 22 CapMotrBus Compressor Rebuild Kit E Includes Items 4 5 6 13 14 15 16 18 Any or all of these shims may be used 23 Compressor Exploded View HAGNINAO 30 dOL 100 0 000 0 HSf114 SI NOLSId 30 01 OL q3HInO3H SV SL FI EL SIN3LI SWIHS TIVLSNI 981 OL NOLSId OL HOLOM 30 MOVE IV LAVHS 31VLOH ILON S3Ovidt ALON 01 19J8H H 0l 6 8 10 V V 885 gl AIGWASSY 31V ld 3ATVA 24 V V M IA MIGANASSV ALV 1 AATVA 7 BEN Warranty Repair Procedures Bacharach warrants this product for 1 year from the date of purchase indicated on the Original sales receipt The warranty covers all parts within the unit but excludes damage to the unit caused by mi
8. Certified per ARI 740 95 amp 740 98 2 Liquid Push Pull Vacuum Level 3 53 Ib min 12 30 Ib min 0 29 Ib min R 22 gt 15 1 60 kg min 5 58 kg min 0 13 kg min 2 67 Ib min 10 98 Ib min 0 22 Ib min 1 21 kg min 4 98 kg min 0 10 kg min 3 02 Ib min 14 62 Ib min 0 22 Ib min F 410 1 37 kg min 6 63 kg min 0 10 kg min Refrigerants Table of Contents MNO CS ON EUR 2 STINGERH SDSOITICAOHOLIS 9 OC NR 4 UU 5 Operational Sally EO E A 6 DESCrDUON OLF eC Sierra 7 Vapor Liquid Recovery 9 Standard Recovery Hose Connections 10 Liquid Push Pull Recovery Operations 11 Liquid Push Pull Operations 12 Liquid Pull Recovery Charging Method 13 R 410A Recovery Special Notes 14 eee ene ee ere Reenter geese are 15 DOT Recovery Cylinder Safety 16 ROCOV TIDO saranane T T T TU 17 c 18 SChematic 20 STINGER Pas 21 STINGER
9. Exploded RSV URSI APRES 22 GOMPFESSON IS ionieni stas dtp EROS 23 Compressor Exploded View 24 Warranty 7 25 General Safety Know your equipment Read and understand the User Manual and labels affixed to the unit Learn the application and limitations as well as the specific potential hazards of your equipment Ground all equipment This unit is equipped with a three pronged grounded power cord Use the proper extension cord Keep extension cord length to a minimum Use the following guide for choosing the proper extension cord 18 gauge cord maximum length 10 feet 16 gauge cord maximum length 25 feet 14 gauge cord maximum length 50 feet 12 gauge cord maximum length 100 feet Use approved hoses Use refrigerant connection hoses that are approved to SAE J2196 1992 These hoses must provide a shut off device within 12 inches of the ends and must be approved for outdoor usage Use approved recovery tank Use a DOT approved refrigerant recovery tank made for use with the type of refrigerant being recovered Note that R 410 is capable of pressures exceeding 600 psi Typical DOT recovery cylinders are rated at 350 psi with a pressure relief set at 550 psi These cylinders should not be used with R 410A Only cylinders rated at 400 psi with the relief valve setting a
10. R LIQUID DOT APPROVED RECOVERY TANK LBS WEIGH SCALE 12 Liquid Pull Recovery Charging Method The Stinger can be used for pumping virgin refrigerant on an intermittent basis Unlike recovered refrigerant virgin refrigerant does not contain oil CAUTION Routinely pumping virgin refrigerant through the STINGER can remove lubrication from the compressor resulting in premature failure Use the liquid push pull method or the liquid pull method to transfer large amounts of liquid refrigerant virgin or dirty The liquid pull method is used to move a large amount of liquid refrigerant without the refrigerant passing directly through the STINGER The virgin refrigerant is pulled directly into the system being charged The STINGER keeps the pressure low in the system by removing vapor For every pound of vapor removed as much as 25 pounds of liquid refrigerant may be transferred This method can be used for either virgin refrigerant or really dirty refrigerant HVAC UNIT APPLIANCE CONTAINING REFRIGERANT te SUCTION LINE _ COMPRESSOR DISCHARGE CONNECT VIRGIN TANK TO HIGH SIDE PORT Liquid l Yer OPTIONAL CONNECT STINGER 80 TANK FULL TOLOW SIDE PORT STI CORD TO PULL LIQUID VIRGIN cx OPEN MI CLOSED Virgin REFRIGERANT VAPOR SL CUI Liquid VAPOR LIQUID APPROVED RECOVER LBS 13 R 410A Recovery
11. al 8096 tank full shutoff cord PN 2090 0091 Kit PN 2090 0091 This optional accessory connects to a DOT recovery cylinder s overfill sensor It automatically shuts the STINGER off when the recovery cylinder reaches 80 of its liquid fill limit Note If this option is installed the STINGER will not operate unless it is connected to a recovery cylinder with a compatible level float switch If the recovery cylinder doesn t have a float switch a shorting cap must be installed on the shutoff cord Storage Pocket This heavy duty storage pocket is used to store the Operation Manual the Warranty Card and the original invoice These items should be kept with the unit at all times Vapor Liquid Recovery Operations Perform the following steps when recovering refrigerant that is either in vapor or liquid form Note Refer to R 410A Recovery Special Notes on Page 14 when recovering R 410A 1 Turn off all electrical or mechanical power to the refrigerant device to be evacuated 2 proper hose connections Connect refrigerant hoses to recovery cylinder STINGER and A C system as shown on Page 10 When possible use a manifold gauge set to recover refrigerant from both the high and low side service ports This will speed up the recovery rates CAUTION If the 80 tank full shutoff cord is not used then use a scale P N 2010 0000 to monitor the refrigerant level in the recovery cylinder in order to pre
12. d other vessels containing refrigerants should be handled at all times as if under high pressure Description of Features Inlet Gauge Displays the inlet suction pressure of the system being evacuated Purge Valve This valve determines what function the STINGER performs This valve is UP during recovery operations and DOWN for purging and liquid push pull operations Inlet Port Valve Opens or closes the inlet port Points UP open for all recovery operations and points DOWN for purging operations Inlet Port Refrigerant hose connection for incoming refrigerant Front Panel Status LED Indicator Green Normal operation Hed Tank is 8096 full or 550 psi pressure limit is reached shut down condition Clear Vacuum condition has reached 13 hg shut down condition Outlet Gauge Displays the outlet discharge pressure Outlet Port Valve Opens or closes the outlet port Points UP when open and to the left when CLOSED Outlet Port Refrigerant hose connection for outgoing refrigerant Description of Features Con t Power Switch When in the ON position this switch starts the recovery operation by turning ON the compressor Two Circuit Breakers Protects the STINGER from over current w Power Cord Note 230 VAC units have a male IEC 60320 type plug that requires the use of a customer supplied power cord adapter init Rear Panel Connector for option
13. ed Optional 80 tank full shutoff cord not connected to tank Tank is full and float switch has opened Float switch in tank is open High pressure switch has activated due to discharge pressure exceeding 550 psi Compressor motor thermal overload has tripped Electronics failure in motor or on printed circuit board Low pressure switch has activated due to inlet port reaching a vacuum of 13 Hg during recovery process Low pressure switch is still activated even after inlet port has been exposed to atmospheric pressure Function valve is in PURGE position during recovery and high pressure switch activates Outlet valve is not open and high pressure switch activates Recovery tank valves closed Blocked discharge hose Air in system tank 18 Attach power cord Verify voltage at job site Identify cause of breaker activation rectify and reset Connect yellow STI cord to tank If tank does not have a float switch short cord and use a scale Change tanks To restart power unit off and on again Check tank switch with multi meter Reduce pressure Check for restrictions in discharge line and that recovery tank valve is open rotate function valve to PURGE and back to RECOVER check that outlet valve is OPEN To restart power unit off and on again Turn OFF unit and allow motor to cool down for at least 15 minutes Factory service required System evacuation is complete Apply 1 2 psi press
14. he DOT recovery tank 5 Remove all hoses RECOVER 1 Rotate inlet valve slowly to its PURGE 2 Rotate purge valve slowly to its PURGE position pointing down OPEN position pointing down i PURGE CLOSED Mae 3 Keep outlet valve in its PURGE BACHARACH OPEN position during the purging process 15 DOT Recovery Cylinder Safety N WARNING This unit is capable of over pressurizing a DOT recovery cylinder Ensure that you are using the proper DOT recovery cylinder for the refrigerant that you are recovering R 410A is capable of pressures exceeding 600 psi Typical DOT recovery cylinders are rated at 350 psi with a pressure relief set at 550 psi These cylinders should not be used with R 410A Only cylinders rated at 400 psi with a pressure relief set at 600 psi should be used to recover R 410A Failure to use the proper cylinder can be extremely dangerous If your STINGER is equipped with the optional 8096 tank full shutoff cord connect this cord to a DOT recovery cylinder s float switch This cord connection will automatically shut OFF the STINGER when the recovery cylinder reaches 80 of its liquid full limit It is recommended that you use this cord for added safety If your STINGER is not equipped with an 8096 tank full shutoff cord or if you are using a recovery cylinder that does not have a float switch then you must use a scale to prevent overfilling the cylinder Note If the
15. ll instructions on Page 11 e When possible recover from both the high and low side service port on the refrigeration system This will soeed up the recovery rate e Use an agency approved in line filter P N 07 1700 to prevent contaminants from entering the STINGER lf the STINGER has the optional 80 tank full shutoff cord installed connect this cord to the recovery cylinder s float switch If the cylinder does not have a float switch then be sure to install a shorting cap on the shutoff cord otherwise the STINGER will not operate Note Although using a manifold gauge set will speed up the recovery process a manifold gauge set is not required and vapor ports at the same time E ie Recover from the liquid A o 9 LIQUID Identify the refrigerant in the system before recovering OPTIONAL 80 TANK FULL SHUTOFF CORD IN LINE FILTER E f P N 07 1700 RECOVERY TANK Use short hoses LBS WEIGH SCALE 17 Troubleshooting PROBLEM CAUSE ACTION AC power switch is ON but fan compressor and status LED are all OFF Status LED glows red Compressor does not start or stops running Status LED is OFF Fan is running but compressor is OFF Compressor starts but cuts out within a few minutes pressure indication on high pressure gauge is high status LED glows red Power cord not attached No voltage at AC outlet Circuit breaker has open
16. pointing UP c Turn ON the STINGER and monitor the inlet gauge The purge operation is complete when the inlet pressure gauge shows a vacuum Standard Recovery Hose Connections IMPORTANT NOTES FOR LIQUID RECOVERY The Stinger can be used for pumping virgin refrigerant on an intermittent basis Unlike recovered refrigerant virgin refrigerant does not contain oil CAUTION Routinely pumping virgin refrigerant through the STINGER can remove lubrication from the compressor resulting in premature failure Use the liquid push pull method or the liquid pull method to transfer large amounts of liquid refrigerant virgin or dirty Attention You must use an agency approved in line filter when recovering liquid Contaminants particularly from the bottom of recovery cylinders can enter the STINGER and become lodged in the valve seats causing damage and resulting in leaks We recommend using Bacharach in line filter P N 07 1700 to guarantee optimum pumping speed CONNECT TO HIGH SIDE e LOW SIDE OR BOTH SERVICE PORTS HVAC UNIT APPLIANCE CONTAINING REFRIGERANT SUCTIONLINE eA T1 d COMPRESSOR AS DISCHARGE LINE OPTIONAL 80 TANK FULL IN LINE FILTER SHUTOFF CORD P N 07 1700 RA CLOSED VAPOR LIQUID OPEN DOT APPROVED RECOVERY TANK LBS Liquid Push Pull Recovery Operations Attention Before attempting li
17. quid push pull recovery operations please review this page A scale or liquid sight glass can be used to determine when all the liquid is recovered The STINGER will not pull a vacuum using the liquid push pull recovery operation To finish the recovery operation you must perform vapor recovery operations as described on Page 9 GUIDLINES If any of the following conditions are present in the system being evacuated the liquid push pull operations may not be practical and vapor recovery operations should be performed v equipment contains less than 20 lbs of refrigerant v The equipment is a heat pump or other system with refrigerant flow that would prevent you from isolating the liquid v Equipment has an accumulator between the service ports used in the liquid recovery process v Liquid refrigerant migration has occurred and the location of the liquid is unknown v refrigerant tubing design on the equipment does not allow for a solid column of liquid refrigerant to be formed STEPS The liquid push pull recovery method requires the use of a third hose In addition a sight glass is useful for determining when all of the liquid has been pushed out of the system After all the liquid has been pushed out you will need to reconfigure the hoses for vapor recovery since the liquid push pull recovery method does not pull a vacuum on the system 1 Remove power from the refrigerant device to be evacuated 2
18. re or slow change tanks Obstruction in fan blades Remove obstruction Throttle gauge manifold valves and discharge valves to reduce pressure differential between LP System refrigerant iced up and HP gauges Restriction in hoses or manifold Interrupt recovery process and gauge set allow ice to dissipate Check and clear restriction Compressor seals worn Rebuild compressor 19 Schematic Diagram q3N3dO SVH HOLIMS 1103 ANVL 08 HO QvOTH3AO TVWH3HLL 3HnSsS3Mud H9IH Q3N3dO SVH HOLIMS 553 MOT 3SnvO238 330 Q3HOLIMS SVH LINN ONINNNY HOSS3HdlNOO 4V312 440 31 N3349 031 1 15 HOLIMS Q302 44OLNHS THM E ip pois le L4 34nss3Xd MOT LJ TOYULNOD HOLIMS JYNSSAYd H9IH JANN JANN OV LOH 1 x ON a quoo S35 Vv38g 3dO NO d3MOd LINDO d3MOd OV HOLIMS QVOTYSAO 1 ET HOSSSHdINOD 20 STINGER Parts List see STINGER Exploded View on Page 21 Part or WI 2645 0620 Compressor 110 20VAG f a 2645 0720 Compressor esov N 2090 0091 80 Tank Full Shutoff Kit Optional 21 STINGER Exploded View 12 22 Compressor Parts List see Compressor Exploded View on Page 23 Penne tem 2081 0410 1 Motor Shaft Head Bearing 1 2081 0370 2 Crank Housing 1 1 _ 2043 0030 3 ShaftSel 11 2051 1900 4 Screw Machine M
19. suse or mishandling The unit s motor brushes carry an extended warranty of 5 years If the unit is in need of warranty service within 1 year of its date of purchase it will be replaced with a brand new one via our over the counter OTC exchange program To obtain a warranty replacement unit via the OTC exchange program the following steps must be followed 1 Return the unit to the wholesaler that it was purchased from along with proof of purchase original or copy of sales receipt 2 Ifthe wholesaler determines the unit is eligible for OTC exchange it will be replaced with a brand new one If the failure is determined to have been caused by customer misuse or mishandling the warranty will be voided 3 wholesaler should then contact our Customer Service Department for a return goods authorization RGA in order to return the defective unit and have an order entered for its replacement Proof of purchase will be required in order to process the RGA OTC exchange units are processed as no charge orders If you have any questions please contact our Customer Service Department at 800 736 4666 or email them at helo mybacharach com 25
20. t and hoses are under high pressure Avoid breathing high concentrations of vapors Use with sufficient ventilation to keep operator exposure below recommended limits especially in enclosed and low lying areas Avoid contact of liquid with eyes and prolonged skin exposure Wear safety goggles and protective gloves Make sure the power switch is in the OFF position before plugging this equipment into an AC power source Unplug unit before servicing otherwise an electrical shock hazard will be present when the unit is disassembled Use caution when connecting or disconnecting hoses Improper usage may result in refrigerant burns frostbite If a significant refrigerant leak occurs proceed immediately to a well ventilated area Do not apply open flame or heat unit above 125 F Do not allow refrigerants to contact open flame Decomposition will occur Inhalation of decomposition is harmful First Aid Breathing If high concentrations of refrigerant vapors are inhaled immediately remove the person s to fresh air Keep calm If not breathing give artificial respiration If breathing is difficult give oxygen Call a doctor Do not give epinephrine or similar drugs Eye In case of liquid contact immediately flush eye with water Seek medical attention Skin Flush with water Treat for frostbite by gently warming the affected area A CAUTION All refrigerant hoses recovery tanks refrigerant lines the STINGER unit an
21. t 600 psi should be used to for R 410A Failure to use the proper cylinder can be extremely dangerous Use weight scale A scale P N 2010 0000 must be used to indicate when the recovery tank is 80 full when the STINGER does not have the 80 Shutoff Kit option installed Avoid dangerous environments Although the unit can be used outdoors we do not recommend operation in the rain or in wet locations Secure the unit when working above floor level This equipment should not be used in the vicinity of spilled or open containers of flammable materials Ventilation requirements This equipment should be used in a location with mechanical ventilation that provides at least 4 air changes per hour or the equipment should be located at least 18 above the floor Use recommended accessories Follow the instructions that accompany all accessories Improper use of accessories may damage the equipment or create a hazard Repair damaged parts Do not operate the unit with a defective part Repair unit to proper operating conditions Operational Safety WARNING Inhalation of high concentrations of refrigerant vapors is harmful and may cause heart irregularities unconsciousness or death Deliberate inhalation of refrigerants is extremely dangerous and may cause death Vapor reduces the oxygen available for breathing and is heavier than air Decomposition products are hazardous Liquid contact can cause frostbite All refrigerant containers equipmen
22. ure to inlet port to reset low pressure switch Rotate function valve to RECOVER Rotate outlet valve to OPEN position Open tank vapor valve Check and clear blockage Bleed air from system tank Troubleshooting Con t PROBLEM CAUSE ACTION Status LED still glows High pressure switch was once Turn unit OFF and then back ON red after high pressure activated causing high pressure condition has been circuit to latch ON cleared Compressor starts but Inlet valve is in PURGE or CLOSED Rotate inlet valve to RECOVER cuts out within a few position during recovery and low minutes pressure pressure switch activates indication on low pressure gauge is low status LED is OFF AC power switch is ON Power cord not attached Attach power cord but fan compressor and status LED are all OFF Circuit breaker has opened Identify cause of breaker activation rectify and reset Blocked intake hose Check and clear blockage No voltage at AC outlet Verify voltage at job site Status LED still glows 80 tank full switch has been Turn unit OFF and then back ON red after changing activated causing tank full circuit to recovery tanks latch ON AC power switch is ON Defective fan Replace fan but cooling fan not running Unit overheats Excessive suction pressure due to Reduce inlet pressure below high ambient temperature 80 psi by throttling the inlet valve Recovery process too Head pressure too high Reduce tank temperatu
23. vent overfilling CAUTION When recovering R 410A you must use recovery cylinder approved for use with R 410A Standard recovery cylinders with 350 psi working pressures are not approved for use with R 410A 3 the inlet and outlet valves to their OPEN position and the PURGE valve to its RECOVER position Open the vapor valve on the DOT recovery tank 4 Use the rear mounted power switch to turn ON the STINGER The compressor will now begin to recover refrigerant Note When recovering liquid in rare instances a knocking sound may come from the compressor This indicates that too much liquid is entering the compressor The inlet valve must be regulated closed until this knocking sound stops otherwise compressor damage could occur Pumping liquid when the compressor is knocking will damage the compressor reduce the compressor life and void the compressor s warranty This condition is rare and should not occur under normal recovery operations 5 Proceed with the recovery process until the system pressure shows a vacuum Turn OFF the STINGER for a minimum of 5 minutes after which determine the amount of refrigerant remaining in the system Repeat this step until system pressure is below mandatory EPA levels 6 Purge the STINGER as follows a Turn OFF the STINGER b Turn the inlet and purge valves to their PURGE position both pointing DOWN and the outlet valve to its OPEN position
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