Model 348002K/348012K Manifold Block Style Recovery/Recycling
Contents
1. INST0856 Manifold Block AJ INST0857 Page 8 348002K 348012K Manifold Block Style Service Manual 12 2000 Control Panel ON 62 AS 1 iS N INST0858 PEN bi 73 82 INSTO861 Page 9 12 2000 348002K 348012K Manifold Block Style Service Manual Oil Injectors 742 EN u INSTO860 Oil Drain 5 0859 10 348002K 348012K Manifold Block Style Service Manual 12 2000 Compressor Specifications RA19458 100V 110V COMPRESSOR RA19457 220V COMPRESSOR COMPRESSOR SPECIFICATIONS Type 1 3 hp hermetic piston type compressor Oil Capacity 10 ounces 296 milliliters Oil Type 150 viscosity POE refrigeration oil Voltage 100 110V units use a RA19458 220V units use a RA19457 Amperage 4 62. Page 3 12 2000 348002K 348012K Manifold Block Style Service Manual 10 Component Descriptions 110 volt 220 volt RA19545 RA19 MANIFOLD ASSEMBLY RA19491 RA19492 Replacement solenoids coils RA19258 VACUUM SOLENOID Normally closed electrical switch that when energized allows a vacuum to be pulled from the A C system being serviced RA19258 RECOVERY SOLENOID Normally closed electrical switch that when energized allow the refrigerant to be removed form the A C system being serviced RA19258 CHARGE SOLENOID Normally closed electrical switch that when energized allows the A C system to be refilled with new or recycled refrigerant RA19258 RECYCLE SOLENOID Normally closed electrical switch that when energized allows refrigerant to be ran in a loop through the recovery filter RA19258 EQUALIZATION SOLENOID Nor mally closed electrical switch that when energized allows the oil in the compressor oil separator to be returned to the compressor RA19529 EXPANSION VALVE Controls the flow of refrigerant into the inlet oil separator to keep it from being flooded with refrigerant RA18752 VACUUM SWITCH Normally closed switch that opens at 13 inhg and stops the recovery process RA19429 VACUUM PROTECTION SWITCH Normally open switch 25 psi and opens at 10 psi If the switch is closed it will not allow
3. 5 0867 20 348002K 348012K Manifold Block Style Service Manual 12 2000 Wiring Diagram 220V pz rd P8 IH 4 D p4 U DU A AN 9 5 O P10 U 5 0867 21 12 2000 348002K 348012K Manifold Block Style Service Manual Wire Schematic 220V od de J NMOS amen J E lt lt a E g NMOud R1340 1 3 HIGH PRESS of A T OIL RETRN 12 INST0870 Page 22 348002K 348012K Manifold Block Style Service Manual 12 2000 Wire Schematic 220V INST0871 Page 23 12 2000 348002K 348012K Manifold Block Style Service Manual Troubleshooting WILL NOT
4. RA17324 RELAY R12 COMPRESSOR Electrically controlled switch that when energized will start the compressor RA19047 VACUUM RECEPTACLE Supplies power to the vacuum pump RA19603 SCALE R134A Electronic strain gauge that sends a signal up to the circuit board to display the amount of weight in the tank Page 4 348002K 348012K Manifold Block Style Service Manual 12 2000 23 24 25 26 27 28 29 30 31 32 33 34 35 Component Descriptions RA19603 SCALE 12 Electronic strain gauge that sends a signal up to the circuit board to display the amount of weight in the tank RA17416 RA17516 FAN Cool the compressor electrical components so that it does not shut down on thermal overload RA17416 RA17516 FAN Cool the compressor electrical components so that it does not shut down on thermal overload RA19748 RA 19762 COMPRESSOR R12 Moves the refrigerant from the A C system being serviced to the storage tank on the unit RA19748 RA 19762 COMPRESSOR 134 Removes the refrigerant from the A C system being serviced to the storage tank on unit RA15425 15630 VACUUM PUMP Two stage 6 cfm rotary pump designed to pull moisture and air from an A C system RA19612 RA 19764 ISV R134A Storage vessel that the recovered and recycled refrigerant is stored RA19612 RA19764 ISV R12 Storage vessel that the recov
5. on his unit Displays the amount of refrigerant that has passed through the filter during recovery since the last time the filter was changed or the amount was reset To reset the weight without doing a filter change press ENTER then press 8 7 8 7 The filter weight should reset to zero Press ENTER to exit this mode This function allows the user to automatically restart recover if there is a rise in pressure in the system Press ENTER to access this mode and use the UP or DOWN arrows to select Press ENTER to exit Allows the user to select pounds or kilograms Press ENTER to access use UP or DOWN arrows to select press ENTER to exit Allows the user to change the vacuum pump oil and resets the OIL message Press ENTER to access follow prompts The vacuum pump will run for 2 minutes You will then be prompted to change the vacuum pump oil Add 5 ounces of oil to the vacuum pump Fill vacuum pump to the middle of the sight glass with pump running Press STOP to exit Allows the user to fill his ESV Press ENTER to access this function Follow on screen prompts Connect low side hose to source tank open low side manifold valve press START Unit shuts off automatically when tank reaches fifteen pounds Will show the user how long the vacuum pump has run since the last oil change Press Enter to access the function Press 8 7 8 7 to reset the time Press ENTER 10 store to the board Is used during original set up of the unit Foll
6. running amperage 100 110V 20 25 locked rotor amperage 3 4 5 running amperage 220V 16 19 locked rotor amperage Checking The Oil 1 Depressurize the unit 2 Remove the compressor from the unit and place on flat surface 3 Tilt the compressor 30 see figure above At this angle there should be oil in the suction fitting Adding Oil 1 Install a funnel in the suction fitting and pour two ounces of oil into the funnel 2 Start the compressor momentarily Plug the intake fitting but leave the discharge fitting open The compressor will pull oil from the funnel Stop the compressor 3 Check the oil level If still low add two ounces of oil at a time until the proper level is achieved Suction and Discharge Pressure Test 1 Disconnect all fittings from the unit 2 Cap the intake fitting 3 Install a low side gauge on the suction fitting Note The fittings used on these compressors require an o ring fitting to seal use a 120063 hose 1 4 flare o ring X 1 2 ACME Q S with an R 134a manifold set 4 Verify that the discharge fitting is unobstructed 5 Start the compressor and monitor the suction readings The compressor should pull a 25 85 bar vacuum If the compressor has weak suction check the oil level and add if necessary If the oil level is okay or oil was added with no improvement replace the compressor Disconnect the low side gauge from the suction fitting Instal
7. should read 2 5 pounds Calibrate if necessary Check the scale cable to be sure it is properly connected to the board NOTE The R12 scale plugs into the main board the R134a scale plugs into the small daughter board Replace scale if previous attempts fail Replace the main board if replacing the scale does not correct the problem Display Reads DRAINING OIL 1 2 Verify all ESV and manifold valves are open Check for pressure on the manifold gauges If there is no positive pressure connect to a vapor supply source and attempt recovery again Connect a pressure gauge to the service port on the oil return line If there is no positive pressure on in the low side of the unit but there is still pressure on the manifold gauges verify the inlet check valve is opening verify the recovery solenoid is receiving 110 volts and opening and allowing flow If the solenoid is receiving 110 volts clean and repair the solenoid If the solenoid is not receiving 110 volts check the wires for continuity If the wires have continuity replace the main board If there is positive pressure in the low side of the unit check for loose wires on the vacuum switch Check the vacuum sensor for continuity and replace if it has none Display Reads LOW SYSTEM PRESSURE 1 If there is less than 25 psi at the inlet and the vacuum pump protection switch has continuity press start to continue recovery If the unit does not continue with the reco
8. the vacuum pump to start This is indicated by a U HI message Also will stop you from recovering an A C system with a possible leak in it indicated by a CH P message RA19427 RA19763 25 bar TUV approved HIGH PRESSURE SWITCH Normally closed between connections 1 amp 3 during normal operations When the pressure reaches 435 psi 10 psi the switch will then close the connections 11 12 13 14 15 16 17 18 19 20 21 22 RECOVERY CHECK VALVE Stops refrigerant from flowing back out the unit after a recovery is completed and during the vacuum recycle process 34724 RECOVERY FILTER Removes moisture from the refrigerant being recovered from the A C system INLET OIL SEPARATOR Removes the oil out of the refrigerant being recovered from the A C system COMPRESSOR OIL SEPARATOR Removes the compressor oil from the refrigerant that is leaving the compressor RA19743 RA19595 R134A AIR PURGE Re moves excessive air from the recovery tank RA19744 RA19770 R12 AIR PURGE Removes excessive air from the recovery tank RA19596 TRANSFORMER Takes line voltage and steps it down to 12 volts RA17282 RA17324 RELAY VACUUM PUMP Electrically controlled switch that when energized will start the compressor RA17282 RA17324 RELAY R134A COMPRES SOR Electrically controlled switch that when energized will start the compressor RA17282
9. CASTOR 122875 MANIFOLD BAR ASSEMBLY HOSES 18190A R 134a Low Side Hose Coupler blue 18191A R 134a High Side Hose Coupler red 62096 R 134a Low Side Hose 63096 R 134a High Side Hose RA19115 Coupler O ring repair kit front 17772 O ring between coupler and hose 68296A R 12 96 Blue Quick Seal Hose 68396A R 12 96 Red Quick Seal Hose 18180 Replacement R 12 Quick Seal O ring Page 6 348002K 348012K Manifold Block Style Service Manual 12 2000 Flow Diagram Block Representation UPPER BLOCK A C SYSTEM TO A C SYSTEM 5 A VACUUM PUMP FROM AIR PURGE ORT ON TANK 5S 10 B 0 OFF 8 X ON PERIODICALLY ON N RECOVER HARGE INJEC 2 0 X 0 0 0 3 0 0 FR 0 4 0 0 X 0 5 RECYCLE 0 0 X 0 0 0 6 OIL RETURN 0 x 0 0 0 49 OIL DRAIN x 0 0 0 0 0 FREE AIR 0 X X 0 0 0 BB PURGE 0 0 5 INST 0717 Page 7 348002K 348012K Manifold Block Style Service Manual 12 2000 348002K Components com u i mal 4 U
10. LBOW Connect to the back of gauges 121771 PNEUMATIC FITTING Connects the tubing from the gauge to the control panel manifold valves 123210 CONTROL PANEL DECAL RA19740 MAIN CIRCUIT BOARD Controls the function of the unit RA19673 DAUGHTER BOARD UL BOARD 121943 KEY PAD Allows the user to input informa tion into the main circuit board 121845 BEZEL RA19343 MAIN POWER SWITCH Allow the unit to be turned on and off 122926 MANIFOLD ASSEMBLY Allow the units gauges and the vehicle being service to be isolated from the rest of the unit 122978 TUBE Provides a path for charging 119983 COUPLING RA19581 PNEUMATIC CONNECTOR Connects to the system gauges 117328 1 2 ACME BULKHEAD R134A MANI FOLD 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 FOLD 111161 ELBOW 122357 LOW SIDE HOSE Provides a connection between the low side service hose and the control panel manifold 122618 INLET HOSE Provides a connection between the control panel manifold and the main manifold block 122356 HIGH SIDE HOSE Provides a connection between the high side service hose and the control panel manifold 122925 PNEUMATIC CONNECTION Connect the oil injector to the control panel manifold 113025 CHECK VALVE Stops refrigerant from entering the oil injectors 111858 112870 ELBOW 116420 107021 SCREEN 122190 PNEUMATIC WHEEL 113160
11. OID REBUILD KIT 19491 19492 REPLACEMENT RA19282 CHECK VALVE Stop the unit from pulling air in through the oil drain during the recovery process through the upper chamber during recycling 111858 FITTING 119994 ELBOW RA19672 OIL DRAIN SWITCH When recovery is completed will pressurize the low side to 16 psi then open the oil drain solenoid and allow the oil to drain Will shut the oil drain solenoid when the pressure on the low side reaches 9 psi 122950 PNEUMATIC ELBOW 122219 OIL INJECTION BRACKET Page 5 12 2000 348002K 348012K Manifold Block Style Service Manual Component Descriptions 56 122987 CONTROL PANEL ASSEMBLY Contains 72 117327 1 4 FLARE BULKHEAD R12 MANI 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 the gauges switches control board and manifolds to operate the unit RA19741 R12 LOW SIDE GAUGE Allows the pressures on the low side of the vehicle being service to be monitored RA19742 R12 HIGH SIDE GAUGE Allows the pressures on the high side of the vehicle being service to be monitored 117684 REFRIGERANT SELECTOR SWITCH Allows the unit to be switched from R12 to R134a RA19614 R134a LOW SIDE GAUGE Allows the pressures on the low side of the vehicle being service to be monitored RA19613 R134a HIGH SIDE GAUGE Allows the pressure on the high side of the vehicle being service to be monitored 111161 E
12. RECOVER Compressor runs 1 2 If the unit is being run through an extension cord eliminate its use Disconnect the high and low side hoses from the vehicle with the gauge valves open If the pressure on the gauges drops while the display shows clearing check voltage to the recovery solenoid If voltage is present replace the main board If voltage is not present the recovery solenoid may need to be rebuilt Check the oil drain assembly Verify that it is closed and not bleeding through Check the pressure at the service port If there is vacuum deeper than 15 51 bar test the vacuum sensor for continuity If there is no continuity replace the main board Close the ESV liquid valve If the unit did not come out of clearing but now does and completes a recovery rebuild the recycle solenoid If the unit came out of clearing but would not complete a recovery and now does rebuild the charging solenoid Check for voltage at the recycling and charging solenoids If the solenoids are receiving power verify proper wire connection and replace the main board if necessary Inspect the filter for flow obstructions and check for leaks around the gasket area When installing gaskets be sure to lubricate them with vacuum grease or refrigerant oil Verify that the equalization solenoid is not receiving power NOTE The equalization solenoid is a normally closed solenoid If it is receiving power check for proper wire conn
13. ROBINAIR Service Manual 348002K 348012K Manifold Block Style Recovery Recycling Recharging Unit For R 12 or R 134a Only TABLE OF CONTENTS Theory of Operation and Safety 5 2 Depressurizing the Unit 2 Component Descriptions 4 6 Flow Diagram nennen 7 348002K 8 Pictorial Views 9 10 Plumbing 12 13 Wiring Diagram 110 volt annen 14 16 Wiring Schematic 110 volt aen 17 18 Wiring Diagram 220 volt nanne eenen enen 19 21 Wiring Schematic 220 volt 22 23 Troubleshooting nnn 24 26 Diagnostic amp Function 27 28 FUNCEION TEESE 29 30 30 12 2000 348002K 348012K Manifold Block Style Service Manual Theory of Operation and Safety Precautions The 348002K recovery recycling evacuation and recharg 6 When the unit shuts off press the menu button then ing unit is designed for R 12 and R 134a refrigerant This scroll down to Recycle and start this process Allow the unit is UL approved and meet SAE J1991 SAE J2210 and unit to pull down and shut off SAE J2099 standards 7 When the unit is done recycling close the va
14. ad Display Reads FULL 1 Check the ESV weight and replace if the ESV is full 2 Check the scale calibration The display should read 2 5 pounds with a 20 pound weight sitting on the scale If the scale is out of calibration calibrate The UL circuit must be reset whenever the scale is calibrated The UL pot for the R 12 side is located on the main board The UL pot for the R 134a pot is on the smaller daughter board Replace the scale if previous attempts fail Replace the main board if replacing the scale does not correct the problem WILL NOT RECOVER Continued Display reads HI P 1 2 Check to be sure all of the ESV valves are open the vapor air purge and the liquid Check the ISV pressure If the pressure exceeds 435 psi 30 bar release the pressure down to 200 psi If the ESV does not have an excessive amount of pressure you will need to check the high pressure switch for continuity between pins 1 amp 2 If pins 1 amp 2 have continuity there may be an obstruction in the discharge line Inspect the discharge line and check valve for obstructions if both of these are clear and free of obstructions replace the high pressure switch Page 24 348002K 348012K Manifold Block Style Service Manual 12 2000 Troubleshooting Display Reads SCALE ERROR 1 2 Remove all weight from the scale Check the scale calibration by placing 20 pounds on the empty scale The display
15. e is a minimum of 10 pounds of refrigerant in the tank Verify that the oil drain assembly is closed and not bleeding through Install the low side of a manifold gauge set to the service port on the compressor oil return line to verify that the expansion valve is set between 35 and 40psi Adjust the expansion valve if necessary If the low side of the unit is in a vacuum and the expansion valve does not adjust to allow flow replace the expansion valve Check the filter for flow obstructions Verify that the equalization solenoid is not receiving power If the equalization solenoid is receiving power replace the main board If the equalization solenoid is not receiving power check the solenoid for bleed through and repair as necessary If the compressor is not running verify that voltage is being supplied to the compressor If it is not receiving power check the wiring to the compressor relay and check the compressor relay for proper operation If the compressor is receiving voltage but is not running check the compressor start components and check the amp draw of the compressor Re place the compressor as necessary If the compressor is running check the compressor suction and the discharge pressures as well as the oil level Will not perform an air purge NOTE The air purge solenoid does not receive power for the first 30 seconds of recycling and will on receive power for a maximum of 10 minutes 1 Verify that t
16. ection and proper installation If the wires are connected to their corresponding pins replace the main board Check the equalization solenoid for bleed through to the suction side of the compressor Rebuild the solenoid if it is bleeding through Check the compressor suction and discharge pressures Replace the compressor as necessary Compressor does not run 1 If the unit is being run on an extension cord elimi nate its use If the display does not respond to keypad com mands verify that the keypad is plugged in If there is still no response replace the keypad If the keypad is functioning properly you will hear a tone when you press a key If the keypad is functioning properly verify proper wire harness connections to the board and the compressor relays Check for 110 volts to the coil of the compressor relay pins 081 If there is no voltage check the wires from the main board to the compressor relays for continuity If they have continuity replace the main board If the compressor relays are receiving 110 volts to the coil check for voltage from the 4 contact of the relay board If there is poor compressor voltage replace the relay If voltage is present at the compressor jumper the thermal overload If the compressor runs check the compressor amp draw If it is drawing higher than 6 amps or not running replace the compressor If the compressor is cool and drawing low amperage replace the thermal overlo
17. ered and recycled refrigerant is stored RA19181 IEC RECEPTACLE Power cord plugs into this and supplies power to the main power switch RA17548 3 19760 1 5 AMP CIRCUIT BREAKER Protects the power transformer RA17549 15 AMP RA9759 7 5 AMP CIRCUIT BREAKER Protects unit from drawing too much amperage and shorting electrical components out 122238 OIL INJECTOR ASSEMBLY Allows the new oil to be injected into the A C system to replace the oil that was removed during the recovery process RA19291 REPLACEMENT BALL VALVE 90 When open and a vacuum is present this will allow the oil to be injected 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 122917 PNEUMATIC CONNECTION 122024 OIL INJECTION BRACKET 110135 STAR WASHER 121449 OIL BOTTLE CAP 115112 PNEUMATIC CONNECTION 117664 OIL INJECTION DIP TUBE RA19291 807 OIL INJECTION BOTTLE 122124 OIL DRAIN ASSEMBLY After recovery is completed assembly will automatically drain the oil that was removed from the A C system during recov ery 115642 120z OIL DRAIN BOTTLE 113564 JAM NUT 117327 BULKHEAD FITTING 122950 FITTING 122237 042 ORIFICE FITTING RA19006 RA19008 REPLACEMENT SOLENOID Automatically opens after recovery and allows the oil to drain Will shut off automatically when the oil drain switch reaches 9 psi e RA19258 SOLEN
18. function Be sure the scale is unobstructed Check the charge solenoid to insure it is receiving 110 volts If there is no voltage check the wires to the board for continuity and proper connection If the wires have continuity replace the board If the solenoid is receiving 110 volts rebuild the solenoid or replace the coil if necessary If a partial charge occurs close the high side valve start the vehicle and pull the remaining charge on the low side of the system When the charge has been pulled from the ESV the charging solenoid should close preventing a possible over charge Page 26 348002K 348012K Manifold Block Style Service Manual 12 2000 Diagnostic amp Function Modes NOTE If the unit that you are servicing has the board with version 1 6 the board will need to be updated to version 1 12 The diagnostic and function modes are accessed by pressing the MENU key and using the UP and DOWN arrows to scroll through the menu LANGUAGE SELECTION CHANGE FILTER FILTER WEIGHT SELECT AUTO RESTART MEASUREMENT UNITS CHANGE VAC PUMP OIL TANK FILL VACUUM OIL TIME INSTALLATION ROUTINE SELECT PROMPTS CHANGE DEFAULTS VACUUM TIME DEFAULT Allows the user to change the default language they will work in Press the ENTER key to access this feature Use the UP and DOWN arrows to select the language and hit the ENTER key to save to the board This feature allows the user to change the filter drier
19. he ESV tank has an excess amount of pressure in it Check the pressure in the ESV in relationship to the temperature of the refrigerant The air purge device requires at least 7 psi of excess pressure to open If excess air pressure is confirmed verify that all ESV hoses are properly installed While running in the Vacuum Mode for at least three minutes verify that the air purge solenoid is receiv ing 110 volts If the solenoid is not receiving 110 volts check the wires to the board If the air purge solenoid is receiving 110 volts rebuild the solenoid or replace the coil if necessary If the air purge solenoid is operating properly replace the air purge device Will Not Charge NOTE There is no component that pumps in refrigerant into a system during the charge process The refrigerant flows into the system by way of pressure transfer If the system is not in a vacuum this unit will not charge If the unit is being run through an extension cord eliminate its use Check that all ESV hoses are properly installed and the valves are open Verify that the manifold valves are in the oil inject charge position If LOW REFRIGERANT is on the display verify that there is at least 10 pounds of refrigerant in the ESV If there is refrigerant in the ESV check the scale calibration and calibrate as necessary Verify that the board has accepted the programmed amount Test operation of the keypad for proper
20. ing a 13 vacuum the recovery solenoid will automatically open and the gauge should repressurize The compressor will now pull both of the unit gauges into a 13 vacuum and the compressor should shut off and the display will go to DRAINING OIL 10 The gauge will build pressure and a pressure transfer should be heard If no rise occurs the equalization solenoid should be inspected for obstruction and the proper voltage 11 Verify that the unit goes to RECOVERY COMPLETE after the unit finishes with DRAIN ING OIL If the display stays in DRAINING OIL check the oil drain switch located on the oil drain assembly NOTE The oil drain switch is a 9 psi to 16 psi switch When the switch sees 16 psi it opens and remains open until the pressure drops to 9 psi or below 12 Press the STOP key to return to main menu 13 Press VACUUM Press START Press EN TER The vacuum pump will start and the display will count down from 15 00 minutes 14 After 6 seconds the compressor recycle solenoid and the vacuum solenoid will receive 110 volts and open The control panel gauges will pull into a deep vacuum and the unit will begin to recycle refrigerant 15 16 17 18 19 20 21 23 24 25 26 27 28 29 31 After 30 seconds the air purge solenoid will receive 110 volts for 10 minutes Once the air purge solenoid opens the air purge device receives pressure form the ISV If the ai
21. l a high pressure gauge on the discharge fitting Note The fittings used on these compres sors require an o ring fitting to seal use a 120063 hose 1 4 flare o ring X 1 2 ACME Q S with R 134a manifold set Verify that the intake fitting is unobstructed Start the compressor and monitor the pressure for four minutes If the pressure doesn t reach at least 350 psi 24 bar replace the compressor Page 11 12 2000 348002K 348012K Manifold Block Style Service Manual Plumbing Diagram 100V 110V OIL INJECIION A ZEN 5 2 HIGH SIDE 12 HIGH SIDE R1340 TO SERVICE HOSES A LOW SIDE R1340 0 SERVICE HOSES OW SIDE R12 COMPRESSOR 2 R 2 S J INST0862 Page 12 348002K 348012K Manifold Block Style Service Manual 12 2000 Plumbing Diagram 100V 110V 4 2 7 EEE y PRP A fe CUUN gt 20 UUIV UV
22. old Block Style Service Manual 12 2000 Wire Schematic 110v 110v 77 man BROWN LT BLUE Me 1 INSTO866 Page 17 12 2000 348002K 348012K Manifold Block Style Service Manual Wire Schematic 110v 110v 5 0867 18 348002K 348012K Manifold Block Style Service Manual 12 2000 Wiring Diagram 220V 5 0864 19 12 2000 348002K 348012K Manifold Block Style Service Manual Wiring Diagram 220V A lt h ASSY 7 UPPER GROUND STUD bed Ac NR CONTROL ASS GROUND JAN i A A 87 68 81 88 PANEL
23. ough rebuild solenoid Display reads HIGH SYSTEM PRESSURE 1 If there is more than 25 psi at the inlet recover before evacuating If pressure continues to rise on the gauges after recovery inspect the inlet check valve If there is less than 25 psi at the inlet check the vacuum pump protection switch for continuity If the switch has continuity replace the switch If the switch does not have continuity check the wires and replace the switch as necessary Vacuum pump does dot run 1 2 If the unit is being run through an extension cord eliminate its use Verify the vacuum pump is plugged into the recep tacle Check the voltage at the vacuum pump receptacle If there is 110 volts at the receptacle be sure the pump is not over filled with oil if the pump is over full drain pump and refill to proper level If the pump will still not start replace the pump Page 25 12 2000 348002K 348012K Manifold Block Style Service Manual Troubleshooting If there is not 110 volts present at the vacuum pump receptacle check the wire connections to the vacuum pump relay Pins 1 amp 0 should have voltage If the relay has power replace the relay If the relay does not have power check the wires for continuity to the board If wires check out replace the board Will not Recycle 1 2 10 Check that all ESV hoses are properly installed and ESV valves are completely open Verify that ther
24. ow the on screen prompts Allows the user to choose between basic and advanced operation Press EN TER to access Press UP or DOWN arrow to select Is a function installed for service purposes It is accessed by typing in 8 7 8 7 at the change defaults prompt then press the ENTER key There are five subrou tines in this menu The routines are as follows Press ENTER to access type in new default time press ENTER to store Page 27 12 2000 348002K 348012K Manifold Block Style Service Manual CALIBRATE SCALE CALIBRATE UL CIRCUIT STEP TEST SET TANK TARE Page 28 Diagnostic amp Function Modes Press ENTER to access NOTE The side that is selected is the only side that can be calibrated Key in the date starting with month followed by day then year Remove all weight from the scale Press ENTER Press ENTER to communi cate the 20 pound weight to the board Place a 20 pound weight on the scale and press ENTER to store to the board NOTE You must use a known 20 pound weight Press ENTER to access Remove all weight from both scales Place 45 pounds on the R 12 scale Turn the potentiometer located on the main board until the display reads set Remove 1 pound The display should go to CLR Place 43 pounds on the R 134a scale Turn the potentiometer on the daughter board until the display reads set Remove one pound The display should read CLR Press ENTER to exit Press ENTER to access Use the UP and DOWN arrow
25. por valve on the ISV Depressurizing Unit Operational 8 Connect a recovery unit up to compressor test port 9 Push the menu button then scroll down until change defaults is displayed Then push 8 7 8 7 and then NOTE If you have to remove any lines or components from enter Scroll down to step test then push start the high side of unit do so very carefully as there is no way to recover the refrigerant from the high side 1 Disconnect the high and low side service hoses from 11 Start the second recovery unit and allow it to finish vehicle on 134A units make sure the coupler valves removing the rest of the refrigerant from the low side are closed and the compressor return oil separator of the recovery unit to be repaired 2 Open the filter access door and remove the ISV access anel rae j Depressurizing Unit 3 Close the Liquid and Air Purge valve on the ISV Do Non Operational not shut the Vapor Valve If a source tank is installed on HAIL Close SUPR PANE 1 Disconnect the high and low side service hoses from 4 Turn the main power switch on and then start a recover vehicle on 134A units make sure the coupler valves Allow the unit to pull down and shut off are closed 2 Open the filter access door and remove the ISV access 5 When the unit shuts off press the menu button then panel scroll down to tank fill and start this process Allow the unit to pull down and shut off A WARNING A Always wea
26. r purge device senses a difference of over 7 psi the air purge device will purge the pressure down to 3 psi difference After 10 minutes the hand held gauge should read between 30 to 40 psi Adjust the expan sion valve to comply with these specifications if necessary Leak test all the internal and external lines and fittings while the unit finishes recycling After 15 00 minutes the vacuum procedure is complete and shuts off automatically Press STOP to exit to the main menu Disconnect from the service port The low side manifold gauge on the control panel should hold a vacuum Close the vapor valve on the ISV Disconnect the vapor hose from the ISV Attach the vapor hose to the high side on a hand held manifold set making sure the high side valve is closed You will need to make up a fitting that is o ring on one end and quarter flare on the other Connect the center port of the hand held manifold to the vapor port on the ISV Press VACUUM Press START Press ENTER The unit will start go into vacuum 6 seconds later it will start a recycle and the high side manifold will start to increase pressure The unit will shut off when the high side manifold reaches 435 psi The display will read HIGH PRESSURE RESETTING The pressure on the high side gauge should hold above 420 psi for at least three minutes If the pressure drops instantly or bleeds off steadily replace the discharge check valve After checking for pressure loss slo
27. r safety goggles when working with refrigerants Contact with refrigerant can cause eye injury Disconnect lines and hoses with extreme caution Pressurized refrigerant may be present in lines and hoses Always point lines and hoses away from you and anyone nearby Always unplug the station from the power source before removing any of the shroud ing or beginning any service work To order parts please FAX your order to 1 800 222 7805 All service related questions should be directed to Robinair Inside Sales and Service at 1 800 822 5561 Page 2 348002K 348012K Manifold Block Style Service Manual 12 2000 Depressurizing Continued 3 Close the Liquid Vapor and Air Purge valves ISV 7 Turn the power switch on the cheater cord to on If a source tank is installed on unit close the supply valve 8 Start the auxiliary recovery unit and allow it to pull down and shut off 4 Disconnect the wires off of the Recovery Recycling and Oil return Solenoids 9 Turn the power switch on the cheater cord off Disconnect the cheater cord and reconnect the 5 Take a cheater cord with a power switch and attach it correct wires to the correct solenoids to these three solenoids 10 Disconnect the auxiliary recovery unit from the com 6 Connect an auxiliary recovery unit up to compressor pressor test port test port RECYCLE 1 4 MALE FASTON FULLY INSULATED SULATION
28. s to scroll through all of the outputs Press START to turn on the outputs Press STOP to turn outputs off Press ENTER to exit NOTE All outputs should be checked during the function test Press ENTER to access Type in the weight of the tank The default weight is 17 50 pounds Press ENTER to exit Press 0 to turn off any solenoid or relay engaged In this mode two components cannot be energized at the same time selection of a new component will auto matically turn off one that is still active Press SHIFT RESET to exit the step test and return to normal operation 348002K 348012K Manifold Block Style Service Manual 12 2000 Function Test NOTE The ESV must have at least 10 pounds of refrigerant in it to perform this test This test needs to be performed on both the R 12 and R 134a sides of the unit Turn on the Main Power switch 2 Pressurize the high and the low side hoses with refrigerant Close the low side manifold valve Open the high side manifold valve Attach a hand held manifold to the service port on the compressor oil return line Verify that the valves on the hand held manifold set are closed 6 Verify that all ISV hoses are connected to the ISV in the correct order 7 Open all valves on the ISV 8 Press RECOVER The display will prompt you to connect hoses and press START After pressing start the display will read CLEARING The gauge will pull down to 13 of vacuum 9 Upon reach
29. sa A LI 2 2 J EN J FU 44 gt AO u L ARTS LISI Qty Description No Part No Qty Description A 2 LIQUID HOSE 122618 2 OSE INLET B 2 AR PURGE HOSE N 121773 REF 3 8 X 0 070 10 2 VAPOR HOSE 0 12 2 REF 2 2 Q 22105 R12 OIL DRAIN TUBE 22105 U PNEU CONNECTOR 3 8 TEE J 22102 2 BLOCK INLET TUBE 7 2 AR PURGE TUBE 22956 R134 OIL DRAIN TUBE x 2 1 4 FLARE QUICK SEAL CAP 19570868 13 12 2000 348002K 348012K Manifold Block Style Service Manual Wiring Diagram 100V 110V INST0864 Page 14 12 2000 348002K 348012K Manifold Block Style Service Manual Wiring Diagram 100V 110V JN 55 C _ UPPER GROUND STUD 5 0863 15 12 2000 348002K 348012K Manifold Block Style Service Manual Wiring Diagram 100V 110V 5 0865 16 348002K 348012K Manif
30. very process test the keypad for proper function If the keypad works properly replace the main board If there is more than 25 psi at the inlet check the vacuum pump protection switch for continuity and if it has none replace the switch If the switch has continuity check the wires for proper connection to the main board and replace either component as necessary Unit will not evacuate vacuum pump runs 1 If the unit is being run through an extension cord eliminate its use Verify that the manifold gauge valves are open Check the low side gauge for proper operation and calibration Be sure the plastic vacuum line is snug at all of the connection points Check for proper vacuum oil level in the vacuum pump sight glass oil should be in the middle of the sight glass while the pump is running Fill vacuum pump if needed Check for suction at the inlet of the pump If there is none replace the pump Check for voltage to the vacuum solenoid If there is 110 volts present rebuild the solenoid If there is not 110 volts at the vacuum solenoid check the wires and the connection on the board This unit also has a free air solenoid mounted on the vacuum pump This solenoid should receive 110 volts during the vacuum process If the solenoid does not receive 110 volts check the wire connections and for continuity If the wires have continuity check to make sure the 3 way solenoid is not bleeding through If the solenoid bleeds thr
31. wly open the high side manifold valve to release the pressure into the ISV Once pressure is equalized close the vapor valve on the ISV and disconnect the hand held manifold from the vapor hose and the ISV Reconnect the vapor hose to the ISV Open the vapor valve on the ISV Press START to clear the HIGH PRESSURE RESETTING message from the display Page 29 12 2000 348002K 348012K Manifold Block Style Service Manual Function Test amp Labor Rates 32 Check the scale accuracy Remove all the weight from the scale and place a 20 pound weight on the platform The display should read 2 5 pounds If the scale is out of calibra tion recalibrate 33 Check the UL circuit for both sides of the unit The R 12 side needs 45 pounds on the scale and the R 134a scale needs 43 pounds 34 Press CHARGE Key in 1 pound Press START The charge solenoid is energized and will charge 1 pounds into the hoses When finished the display will read charge complete 35 Press RECOVER Press START to remove the remaining pressure from the high and low side hoses LABOR RATES Robinair authorizes a 2 hour charge to troubleshoot leak test and complete a full function test on units that are covered under factory warranty The authorized time for parts replacement is 15 minutes per part If repairs are estimated to exceed 3 hours prior authori zation from Robinair is required Page 30
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