User manual
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1. The Measurable Difference Model 3700 Part No 2000 3700 Instruction 2079 0110 Operation amp Maintenance Rev 3 March 2013 CERTIFIED www ahridirectory org Refrigerant Recovery Recycling Equipment AHRI Standard 740 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 BEFORE HANDLING REFRIGERANTS READ MATERIAL SAFETY DATA SHEET FROM REFRIGERANT MANUFACTURER SPECIFICATIONS 9 V 9 w0 D A 9 amp w 6 O Model 3700 Portable Commercial Oilless Recovery Power Source 115V AC 50 60 Hz Amperes RLA 10 2A LRA 65 A Compressor 1 HP High Performance Oilless Dimensions Height 12 0 Width 14 0 Depth 8 5 Weight 42 Lbs Refrigerant Recovery Rates Certified per AhRI 740 95 amp 740 98 3 77 kg min 22 91 kg min 0 34 kg2. min 2 77 kg min 18 92 kg min 0 26 kg min 4 25 kg min 24 04 kg min 0 38 kg min TABLE OF CONTENTS Specifications amp Features 2 3 General Safety INStrUCtONS soccer tn inh rcr eroe meta cita te eret iab Pee 4 Operational secos te b evoca ce ta 5 8 2 er uu u aaa 6 7 Vapor Recovery Procedures tace ea eda mese t oret Ye ey 8 Vapor Recovery Hose Connections Figures 12 9 Liquid Recovery General Information essen 10 Liquid Recovery Procedures 222 11 Liquid Push Pull Hose Connections Figures 3 amp 4 12 Pump Down Operations siisi aides atur eh el menge 13 DOT Recover Cylinder Safety 2 S datei 14 Tro bleshooting Guides c arse TR EE 15 Electrical 56 uc n UDINE Ed mend aD rss Saha UE 16 Replacement and Accessory Parts 17 INTRODUCTION D Congratulations on your purchase of the Bacharach Model 3700 high performance oilless recovery system Bacharach Test Systems has endeavored to make the Model 3700 the highest per
3. the guidelines below to prevent overfilling of the cylinder NOTE THE SHORTING CAP SUPPLIED WITH THIS OPTION MUST BE USED IN ORDER TO OPERATE THE MODEL 3700 WITHOUT A RECOVERY CYLINDER EQUIPPED WITH A FLOAT SWITCH CYLINDER GROSS NET REFRIGERANT SIZE water WEIGHT CONTAINER capacity WEIGHT APPROX 30 Ibs 24 Ibs 44 Ibs 50 Ibs 40 Ibs 70 Ibs 100 Ibs 80 Ibs 130 Ibs 125 Ibs 100 Ibs 150 Ibs 250 Ibs 200 Ibs 280 Ibs NOTE Weights of tanks vary by manufacturer Check each tank for its tare weight TROUBLESHOOTING GUIDE PROBLEM LED Srarus POSSIBLE CAUSE SOLUTION UNIT VACUUM PRESSURE SWITCH HAS TURN UNIT OFF APPLY 1 2 COMPRESSOR BEEN ACTIVATED PSIG PRESSURE TO INLET WILL NOT START PORT TO RESET VACUUM SWITCH RED LED CHECK FOR RESTRICTIONS IN THE REMOVE RESTRICTIONS IN HIGH PRESSURE DISCHARGE LINE ENSURE THAT THE HIGH SIDE THE CYLINDER VALVES AND DISCHARGE VALVES ARE OPEN RECOVERY CYLINDER HAS REPLACE WITH EMPTY REACHED 550 PSI HIGH PRESSURE CYLINDER OR COOL CYLINDER LIMIT WITH WATER ICE e GREEN LED BAD THERMAL OVERLOAD CALL BACHARACH TEST SYSTEM ON SYSTEMS FOR SERVICE CIRCUIT BREAKER IS TRIPPED RESET CIRCUIT BREAKER NO POWER TO THE UNIT PLUG THE UNIT INTO A 110 120 VOLT POWER UNIT FAN WILL GREEN LED DEFECTIVE FAN REPLACE FAN NOT START SYSTEM ON OBSTRUCTION IN FAN BLADES REMOVE OBSTRUCTION NONE SYSTEM SWITCH IS OFF TURN SYSTEM AND FAN SWITCH TO ON POSITION UNIT STARTS e N
4. the pressure difference shown on the system s gauges Allow the unit to run until it shuts off automatically The LED status display will turn off indicating that the purge operation is complete Turn the system switch to the OFF position and turn the outlet valve to the CLOSE position Close the inlet and outlet valves on the DOT recovery tank During the pump down operation the 3700 s compressor pulls the entire system and discharge hose into a vacuum and discharges the gas directly out of the discharge port leaving no more than 1 4 ounce of refrigerant left the system CAUTION Never turn the purge valve while the compressor is running severe compressor damage may occur e RECOVERY m 2 c 2 2 7 2 a v 5 e PURGE e E STORAGE INLET PURGE VALVE VALVE OUTLET VALVE CLOSE z A O 13 DOT RECOVERY CYLINDER SAFETY 14 An optional Automatic 80 Tank Full Shutoff Option is available with the Model 3700 If equipped this option connects to the recovery cylinder float switch and will automatically shut the Model 3700 off when the recovery cylinder becomes 80 full When the Model 3700 is equipped with this option Bacharach Test Systems recommends that you use this cord for added safety If the Model 3700 is not equipped with this option or if you are using a recovery cylinder that does not have a float switch then you must use a scale and
5. 45 0021 2051 0680 2054 0120 2055 0050 2063 0010 2063 0020 2079 0110 AUTOMATIC 80 TANK FULL SHUTOFF KIT FILTER RECOVERY RECOVERY SCALE FOR INFORMATION ON ORDERING PARTS CALL 1 800 736 4666 17 18 Printed in U S A The Measurable Difference World Headquarters 621 Hunt Valley Circle New Kensington PA 15068 Ph 724 334 5000 Fax 724 334 5001 Toll Free 1 800 736 4666 Web site www MyBacharach com E mail help MyBacharach com WU Registered Trademark
6. O LED EVACUATION IS COMPLETE CHECK INLET PRESSURE BUT STOPS VERIFY VACUUM LEVEL 15 AFTER A FEW LEAST 1 0 HG MINUTES OF OPERATION IF REFRIGERANT REMAINS IN THE ENSURE ALL VALVES ARE SYSTEM CHECK FOR OPEN RESTRICTIONS IN THE SUCTION LINE RED LED LIQUID VALVE ON DOT CYLINDER OPEN THE CYLINDER VALVES HIGH PRESSURE OUTLET BALL VALVE IS OF TANK FULL OTHER RESTRICTION S IN TURN UNIT OFF REMOVE DISCHARGE HOSE RESTRICTION e GREEN LED THE UNIT IS TOO HOT THERMAL LET THE UNIT COOL DOWN SYSTEM ON OVERLOAD TRIPPED FOR 15 MINUTES CIRCUIT BREAKER TRIPPED DUE REDUCE THE INLET AND OR TO COMPRESSOR STALL OUTLET PRESSURE CIRCUIT BREAKER TRIPPED DUE PURGE THE SYSTEM AND TO TOO MUCH PRESSURE OR CONTINUE LIQUID IN THE SYSTEM 15 ELECTRICAL SCHEMATIC GREEN FROM COMPRESSOR GROUND STUD STI CORD BLACK CAPACITOR SYSTEM SWITCH BLUE LP SWITCH LP SWITCH FROM COMPRESSOR RED FROM COMPRESSOR YELLOW RED HP SMTCH HP SMTCH REPLACEMENT PARTS SPRINGS ONE VALVE PLATE amp O RINGS 2012 0080 2013 0010 2014 0200 2014 0050 CIRCUIT BREAKER 15 AMP 2014 0060 SWITCH ROCKER 2014 0110 2014 0740 2015 0182 2024 0030 2024 0050 VALVE CHECK 1 4 MFL 1 8 W NEOPRENE SEAL 2002 0061 KIT HARDWARE REPLACEMENT Kit INCLUDES 5 SHEET METAL SCREWS 4 RUBBER FEET 1 FOAM HANDLE 2014 0090 SWITCH VACUUM 13 HG 2024 0270 2024 0280 20
7. Option it will not work unless connected to a DOT recovery cylinder with a compatible level float switch If the recovery cylinder does not have a float switch a shorting cap must be installed in order to operate the system Compressor Circuit Breaker Protects against high amperage Located on the left side of the machine not shown LOCATION AND DESCRIPTION OF UNIT FEATURES i D d w5 vo 9 O 60 60O 9 O 88 0o w wb LED DISPLAY LED STATUS Normal GREEN Indicates that the power switch is ON and the compressor is Operation LED running EXPLANATION Indicates that there is a high pressure condition that must be corrected The internal high pressure switch activates at 550 psi Indicates that the recovery cylinder is full if the Automatic 8096 Tank Full Shutoff Option is installed High Pressure Condition Tank Full RED LED NOTE If the Model 3700 is equipped with the Automatic 80 Tank Full Shutoff Option it will not work if it is not connected to a DOT recovery cylinder with a compatible level float switch If the recovery cylinder does not have a float switch a shorting cap must be installed on the end of the 80 shutoff cord in order to operate the system VAPOR RECOVERY PROCEDURES K EBpmgm STEPS 1 Turn off all electrical or mechanical power to the refrigerant device to be evacuated 2 Make proper hose connections Connect refrigerant hoses to recovery cylinde
8. conds reset circuit breaker and go to step 3 If the compressors thermal overload trips wait 16 to 30 minutes before restarting VAPOR RECOVERY HOSE CONNECTIONS FIGURE 1 OPTICNAL 80 TANK SHUTOFF CORD HVAC UNIT APPLIANCE FILTER DRIER REFRIGERANT RECOVERED 0007 1700 FROM THE HIGH AND LOW SIDE VAPOR PORT PORT CLOSED OPEN Use only approved DOT recovery cylinders Follow precautions and warnings listed on the cylinder If servicing a system with a compressor burn out use a high acid type filter drier and do not reuse FIGURE 2 RECOVERY e e RECOVERY e el 4 3 5 3 Q T o 5 g 0 o 0 L 2 2 8 i E 2 PURGE PURI w e STORAGE e INLET PURGE INLET PURGE VALVE VALVE VALVE VALVE OUTLET OUTLET VALVE VALVE CLOSE CLOSE OPEN OPEN RECOVERY MODE STORAGE LIQUID PUSH PULL RECOVERY GENERAL INFORMATION Attention Before attempting the following liquid push pull recovery operations please review this page It may not be possible to recover liquid refrigerant from some types of refrigeration equipment A scale or liquid sight glass can be used to determine when all the liquid is recovered The unit will not pull a vacuum using the push pull liquid recovery operation To finish the recovery operation you must proceed to vapor recovery operations Guidelines If any of these conditions are present in
9. ficient ventilation to keep operator exposure below recommended limits especially in enclosed and low lying areas e Avoid contact of liquid with eyes and prolonged skin exposure e Wear safety goggles and protective gloves e Do not apply open flame or heat unit above 125 Do not allow refrigerants to contact open flame Decomposition will occur FIRST AID If high concentrations of refrigerant vapors are inhaled immediately remove 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 Incase of liquid contact immediately flush eye with water Seek medical attention SKIN Flush with water Treat for frostbite by gently warming the affected area CAUTION All refrigerant hoses recovery cylinders refrigerant lines the unit and other vessels containing refrigerants should be handled at all times as if under high pressure COMBUSTIBLE FLAMMABLE GAS WARNING For your safety DO NOT use this device to recover refrigerants which are rated as combustible flammable gases e g ASHRAE A2 or A3 rated refrigerants HAZARDOUS AREA WARNING This instrument has not been designed to be intrinsically safe for use in areas classified as hazardous locations DO NOT use it in hazardous classified locations WARNING Before starting the 3700 recovery unit you MUST OPEN the outlet port on the unit and open the p
10. forming most portable and easiest to use recovery system on the market We are committed to your complete satisfaction Please note that Bacharach Test Systems requires that a filter be used on the inlet hose coming from the system being serviced in order to protect the compressor from particulate A standard filter or filter dryer is suggested The compressor warranty will be voided if it is determined that a filter was not used during the operation of this equipment 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 FEATURES kw e A high performance dual headed oilless recovery system New oilless compressor technology that is QUIETER FASTER AND LIGHTER than current products on the market e Tolerates liquid during vapor recovery operations with no compressor damage e Very easy to operate e Extra large condensing ensures high recovery rates even on the hottest days e Self purging valve completely purges the condenser and tubing eliminating cross contamination when switching between refrigerants e Solid state LED status display keeps the operator informed of the operational status of the unit The following situations are monitored High Pressure Shutoff Recovery Cylinder Full Shutoff if option is installed Automatic Vacuum S
11. hutoff and System Operating e Suction and discharge gauges eliminate the need for a manifold gauge set Inlet and outlet ball valves provide full refrigerant flow and positive shutoff e Automatic vacuum shutoff at 13 HG vacuum e Automatic high pressure shutoff at 550 psi e Rugged heavy duty steel construction with epoxy powder coating finish e Options include Automatic 80 Tank Full Shutoff Option Part 0002 0081 Specifications are subject to change without notice GENERAL SAFETY INSTRUCTIONS 1 KNOW YOUR EQUIPMENT Read and understand the instruction manual and labels affixed to the unit Learn its application and limitations as well as the specific potential hazards of your equipment 2 GROUND ALL EQUIPMENT This unit is equipped with an approved three pronged grounded power cord and plug The green wire is the ground wire and should never be connected to a live terminal 3 USE THE PROPER EXTENSION CORD 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 4 AvoID DANGEROUS ENVIRONMENTS Do not use this unit in damp or wet locations or expose it to rain Secure unit when working above floor level This equipment should be used in a location with mechanical ventilation that provides at least four air changes per hour or the equipmen
12. nser on the system being serviced and the liquid valve on the DOT recovery cylinder Connect the inlet hose from the DOT recovery cylinder vapor valve to the 3700 s inlet port See Figure 3 for a hose connection diagram NOTE You must use an external filter drier in the suction line in order to meet the conditions of the unit warranty Caution If the 8096 shutoff option is not used a scale must be used to monitor the refrigerant level in the recovery cylinder 3 Place the inlet and purge valves in the LIQUID PUSH PULL position This will allow hot compressor gas to bypass the condenser OPEN the liquid and vapor valves on the cylinder see Figure 4 4 Open the outlet ball valve and the vapor and liquid valves on the DOT recovery cylinder 5 Turn the system switch to the ON position When all liquid refrigerant is recovered turn the system switch to the OFF position NOTE Liquid push pull operations do not pull a vacuum on a system You must perform a vapor recovery operation in order to pull the system down to the required vacuum level 6 Monitor the LED status display GREEDLED SYSTEM indicator should be ON during normal operations SYSTEM ON NO LED Indicates that the unit has shut down because the system being EVACUATION evacuated has reached 13 HG The evacuation is complete During COMPLETE liquid push pull operations the system will not be pulled into a vacuum NOTE A small amount of inlet pressure migh
13. ntering the compressor The inlet ball valve must be regulated as shown in the shaded region until the knocking sound stops otherwise compressor damage could occur Pumping liquid when the compressor is knocking will damage the compressor and will reduce the compressor life This will void the compressor warranty A sudden slug of liquid into the compressor may cause a sudden spike in pressure and cause the high pressure safety shutoff switch to shut the compressor off If this happens you must clear the liquid from the compressor before you can restart the compressor To prevent this from happening always open the inlet valve slowly when starting a recovery job Opening the inlet valve quickly could allow a slug of liquid to enter the cylinder and cause the high pressure switch to shut the system down 10 LIQUID RECOVERY PROCEDURES 9 9 9 9G wO O w 10 D STEPS Liquid push pull operations are performed by using hot compressor gas to push liquid refrigerant out of a system The purge valve accomplishes this by re directing the hot compressor gas around the condenser See the diagram on top of the unit for hose connections 1 Turn off all electrical or mechanical power to the refrigerant system to be evacuated 2 Make proper hose connections Connect the discharge hose from the outlet port to the low pressure side of the system you are servicing Connect a hose between the liquid port receiver or conde
14. ort to the recovery tank Read the entire operating instruction manual before use Failure to open the outlet port will cause permanent damage to the unit and void the warranty LOCATION AND DESCRIPTION OF UNIT FEATURES 1 Purge Ball Valve This valve determines what function the Model 3700 performs This valve points UP during recovery operations and DOWN for purging and liquid push pull operations 2 Inlet Port Ball Valve Opens or closes the inlet port It is pointing UP open for all recovery operations and points DOWN for purging operations 3 LED Status Display Displays the status of the machine 4 System Switch When in the ON position this switch starts the recovery operation by turning the compressor on 5 Outlet Port Ball Valve Opens or closes the outlet port It points DOWN when it is open and to the LEFT when closed 6 Inlet Port Refrigerant hose connection for incoming refrigerant vapors 7 Outlet Port Refrigerant hose connection for outgoing refrigerant 8 Outlet Pressure Gauge Displays the outlet discharge pressure 9 Inlet Pressure Gauge Displays the inlet suction pressure of the system being evacuated Automatic 8096 Tank Full This optional accessory connects to the recovery cylinder overfill sensor and Shutoff Cord Optional automatically shuts the unit off when the recovery cylinder reaches the 8096 Accessory Not shown liquid fill limit NOTE If the Model 3700 is equipped with the Automatic 80 Tank Shutoff
15. r unit and the refrigerant system as shown in Figure 1 NOTE You must use an external filter drier in the suction line in order to meet the conditions of the unit warranty Caution If the 80 shutoff option is not used a scale must be used to monitor the refrigerant level in the recovery cylinder NOTE Although the Model 3700 was designed to handle liquid slugging pumping large amounts of liquid over extended periods of time will reduce the life of the compressor If large amounts of liquid are present it is recommended that you use the liquid push pull method of recovery prior to vapor recovery operations See Figures 3 amp 4 3 Place the inlet and purge ball valves in the CLOSED position and the outlet valve is in the OPEN position Open the DOT recovery cylinder liquid valve See Figure 2 4 Turn the system switch to the ON position The LED status display will indicate SYSTEM ON NOTE The system fan is on whenever the system switch is in the ON position 5 Regulate the inlet port ball valve when liquid refrigerant is present WARNING A knocking sound coming from the compressor indicates too much liquid is entering the compressor The inlet ball valve must be regulated as shown in the shaded region until this knocking sound stops otherwise compressor damage could occur Pumping liquid when the compressor is knocking will damage the compressor and will reduce the compressor life and will void the compressor warrant
16. t be needed to reset the vacuum switch this is normal RED LED Indicates that there is a high pressure condition that must be HIGH corrected Check for restrictions or a full recovery cylinder Correct PRESSURE problem and turn system switch to the OFF position Repeat steps 3 6 RED LED Indicates that the recovery cylinder is full if the 8096 Automatic Tank TANK FULL Full Shutoff Option is installed Change the recovery cylinder and If equipped repeat steps 3 6 7 Turn the system switch to the OFF position when all liquid is recovered The liquid recovery operation is complete when there is no more liquid present in the system This can be verified by using an in line sight glass to monitor the refrigerant flow in the line NOTE The unit must be manually shut off during all liquid recovery operations 8 Proceed to vapor recovery operations to complete the recovery procedure If the unit is manually or automatically turned off before liquid recovery is complete repeat steps 3 8 NOTE If the circuit breaker trips wait 10 seconds reset circuit breaker and go to step 3 If the compressors thermal overload trips wait 16 to 30 minutes before restarting 11 LIQUID PUSH PULL HOSE CONNECTIONS FIGURE 3 OPTIONAL 80 TANK SHUTOFF CORD ater HVAC UNIT APPLIANCE VAPOR Z LIQUID FILTER DRIER LIQUID PORT OPEN VAPOR PORT OPEN RECOVERY TANK Use only approved DOT recovery
17. t should be located at least 18 inches above the floor This equipment should not be used in the vicinity of spilled or open containers of flammable materials 5 DISCONNECT UNIT BEFORE SERVICING Electrical shock hazard may be present when the unit is disassembled 6 AVOID ACCIDENTAL STARTING Make sure the system switch is in the OFF position before connecting electrical devices 7 REPAIR DAMAGED PARTS Do not operate the unit with a defective part Repair unit to proper operating conditions 8 USE RECOMMENDED ACCESSORIES Follow the instructions that accompany all accessories Improper use of accessories may damage the equipment or create a hazard 9 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 OPERATIONAL SAFETY B 9h 9ww 9 90 O OCC P m V P 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 may occur without warning Vapor reduces oxygen available for breathing and is heavier than air Decomposition products are hazardous Liquid contact can cause frostbite All refrigerant containers equipment and hoses are under high pressure e Avoid breathing high concentrations of vapors e Use with suf
18. tank Follow precautions and warnings listed on the cylinder If servicing a system with a compressor burn out use a high acid type filter drier and do not reuse FIGURE 4 e RECOVERY e e RECOVERY 3 2l g 2 o v z 2 5 2 c a o I v gt e c F i PURGE e e PURGE e STORAGE STORAGE INLET PURGE INLET PURGE VALVE VALVE VALVE VALVE OUTLET OUTLET VALVE VALVE CLOSE CLOSE e LIQUID PUSH PULL STORAGE MODE 12 PUMP DOWN OPERATIONS MU The Model 3700 is equipped with a pump down purge valve that allows the technician to pump down or evacuate the 3700 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 STEPS 1 After recovery operations are complete and the system switch is in the OFF position FIRST Place the inlet valve in the PURGE position SECOND Place the purge valve in the PURGE position THIRD Place the outlet valve in the OPEN position as illustrated below It is important to turn the valves in this order to ensure the compressor properly equalizes Turn the system switch to the ON position The LED status display will indicate SYSTEM NOTE If the compressor fails to start cycle the purge valve from the RECOVERY to PURGE position to reduce
19. the system being evacuated liquid push pull operations may not be practical and vapor recovery operations should be performed e The equipment contains less than 15 Ibs of refrigerant e The equipment is a heat pump or other system with refrigerant flow that would prevent you from isolating the liquid e Equipment has an accumulator between the service ports used in the liquid recovery process e Liquid refrigerant migration has occurred and the location of the liquid is unknown e The refrigerant tubing design on the equipment does not allow for a solid column of liquid refrigerant to be formed Direct Liquid Recovery Operations All compressors are designed to compress gases Normally compressors are not capable of pumping non compressible fluids such as liquid refrigerant however the Model 3700 s compressor head and valves have been specially engineered to enable it to handle liquid directly This feature makes the 3700 easier to use by minimizing the need to monitor incoming refrigerant vapors and reduces compressor failures due to liquid slugging It is important to remember that the 3700 is a compressor and not a liquid pump When large amounts of liquid are present the liquid push pull method of recovery should be used Using the 3700 to pump large amounts of liquid refrigerant over a long period of time will reduce the compressor life WARNING A knocking sound coming from the compressor indicates too much liquid is e
20. y 6 Monitor the LED status display The unit will shut off automatically when the proper vacuum level is achieved and the status display will flash EVACUATION COMPLETE GREED LED The SYSTEM ON indicator should be ON during normal SYSTEM ON operations NO LED Indicates that the unit has shut down because the system EVACUATION being evacuated has reached 13 HG The evacuation is COMPLETE complete During liquid push pull operations the system will not be pulled into a vacuum NOTE A small amount of inlet pressure might be needed to reset the vacuum switch this is normal RED LED Indicates that there is a high pressure condition that must be HIGH PRESSURE Corrected Check for restrictions or a full recovery cylinder Correct problem and turn system switch to the OFF position Repeat steps 3 6 RED LED TANK that the recovery cylinder is full if the 80 FULL Automatic Tank Full Shutoff Option is installed Change the recovery cylinder and repeat steps 3 6 7 Purge the system by positioning the inlet and purge ball valves to the PURGE position both pointing DOWN CAUTION Never turn the purge valve while the compressor is running or severe compressor damage could occur Ensure the power switch is in the off position before turning the purge valve If the unit is manually or automatically turned off before the evacuation is complete repeat steps 3 7 NOTE If the circuit breaker trips wait 10 se
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