yellow jacket 37880 Series Operation Manual Download Page 13

13 

Maintenance—Compressor Oil 

The oil should be checked for contamination and proper 
oil level when the compressor oil maintenance reminder 
is displayed. Select RESET to turn reminder off until the 
next time you start the unit. Select ENTER to reset the 
reminder until the next scheduled maintenance.  

Instructions for Oil Maintenance 

Oil Level Check 

1. Place unit on a level surface and run a recovery

cycle with the unit.

2. Unplug unit.
3. Remove front cover of unit.
4.

SLOWLY

 remove oil port cap on compressor.

Note: 

High pressure may be present, remove cap 

slowly. 

5. Place rear wheels of unit on a 2 x 4.
6. Oil should drip out of oil drain port.
7. If oil runs out of port rapidly, allow to drain.
8. Replace oil port cap and cover.
9. Dispose of oil properly.

Oil Replacement Procedure 

1. Follow steps 1 thru 4 in the oil level check.
2. Tilt unit at 45° angle towards oil drain. port until all

oil has been drained.

3. Refill with proper amount and type of oil. The proper

oil charge is 8.0 ounces 150 VISCOSITY(SUS)
POE oil.

4. Replace oil port cap and front cover.
5. Dispose of oil properly.

Note: 

Failure to perform oil maintenance can cause the 

compressor to overfill with oil and severely damage the 
compressor. 

Oil 

Drain 

Port 

Maintenance— Vacuum Pump Oil 

Select ENTER to turn the reminder off until the next 
time you start the unit. Select RESET to reset the re-
minder until the next scheduled maintenance.  

Check oil level when pump is running.  

When pump is running, oil level should be 1/2 to 5/8 up 
in the sight glass. This level is necessary for proper op-
eration. 

This maintenance is best performed when the oil    
is warm. 

1. Remove thumb screws under vacuum pump.
2. Rotate the front of the vacuum pump towards the

rear of the unit.

3. Place a container under the oil drain plug and

remove the oil drain plug.

4. Drain oil into the container.
5. Dispose of the oil properly.
6. Refill the vacuum pump with YELLOW JACKET

(Quart Part no. 93192) vacuum pump oil to the
correct level.

7. Reverse Steps 1-2.

Calibration Check (1 lb weight) 

1. Select SETUP in the main menu
2. Select CALIBRATION CHECK
3. Press “START” key to stabilize
4. After stabilizing, machine will display “PLACE THE

1lb TEST WEIGHT ON THE TANK” (1lb weight
supplied)

5. Press the “START” key
Example: 

1 lb. 02 oz (Out of Calibration)   
0 lb. 15.98 oz (Out of Calibration) 

NOTE: If out of calibration follow the steps displayed on 
the display to recalibrate scale 

“WARNING SCALE CALIBRATION” MESSAGE: 

If the scale calibration changes, this message may    
appear on the display. To reset the warning message 
follow the on screen instructions or do the following: 
1. Select SETUP in the main menu
2. Select CALIBRATE SCALE
3. The display will then read “REMOVE WEIGHT

FROM SCALE”

4. Once the weight is removed press the  START key
5. The display will then read “CALIBRATING PLEASE

WAIT”

6. When the display reads “POWER OFF AND RE-

START SYSTEM” turn the main power switch off

7. Carefully place the tank back on the scale and turn

the main power switch back on.

Summary of Contents for 37880 Series

Page 1: ...y Recycling Recharge System Operation Manual 37880 37881 37882 37887 37888 37889 37880 Series YELLOW JACKET 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us a...

Page 2: ...th Deliberate inhalation of refrigerants is extremely danger ous Death can occur without warning Vapors reduce oxygen available for breathing and are heavier than air Decomposition products are hazard...

Page 3: ...r form is a po tentially hazardous material Please consult the manufac turer s Material Safety Data Sheet for additional informa tion and adhere to the following safety guidelines Avoid breathing high...

Page 4: ...3 Low Gauge 4 Auto High Side Hose Red 5 Auto Low Side Hose Blue 6 Tank Vapor Hose Red 7 Tank Liquid Hose Blue 8 Oil Drain Bottle 9 Oil Inject Bottle excluded on 37887 and 37888 10 Tool Tray 11 Main P...

Page 5: ...ystem compo nent 2 Option 2 Vacuum is used to vacuum air moisture from a system previously opened to the atmos phere This Option will then proceed to recharge the A C system This Option also allows th...

Page 6: ...r to selecting a mode on the machine 3 Connect the high and low side auto service hoses to the respective high and low side service ports on the automobile A C system Open the service hose valves 4 Pr...

Page 7: ...IES AND MY CAUSE DAMAGE TO OTHER AUTOMOBILES THAT YOU SERVICE IN THE FUTURE RECOVER cont VACUUM The vacuum function of the 37880 SERIES is designed to remove air moisture from the automobile A C syste...

Page 8: ...0 1 Verify the auto air conditioning system is off 2 Select CHARGE option from the main menu 3 When the LCD reads SET CHARGE AMOUNT set the amount of refrigerant to be charged into the A C system by u...

Page 9: ...e If vacuum hold time was set to zero the unit will transition into charge mode 11 Record the final vacuum level shown on the low pressure gauge If the two recorded levels are dif ferent the A C syste...

Page 10: ...hybrid A C system can cause serious issues with the electrical system Having too much of the wrong type of oil in a hybrid A C system can conduct the electricity to the outside of the A C compressor S...

Page 11: ...l low the instructions on the screen and the unit will clear itself automatically Repeat the identification process to insure the proper identification of the refrigerant purity level If the unit fail...

Page 12: ...e free The filters must be changed periodically to ensure the system is working properly A maintenance reminder prompts you when to change your filters All refrigerant must be removed from the old fil...

Page 13: ...d maintenance Check oil level when pump is running When pump is running oil level should be 1 2 to 5 8 up in the sight glass This level is necessary for proper op eration This maintenance is best perf...

Page 14: ...a 120 Volt outlet Circuit breaker tripped on shop power panel Bad Main Power switch Loose wire Bad Transformer on microprocessor board Plug into outlet Reset circuit breaker If circuit breaker immedi...

Page 15: ...ALIBRATION ERROR 6 TANK EMPTY REFRIGERANT BELOW 5 OF TANK CAPACITY REFILL TANK CHECK SCALE CALIBRATION ERROR 7 NOT ENOUGH REFRIGERANT UNIT IS LOW ON REFRIGERANT 10 LB MIN REFILL TANK ERROR 8 TANK REFI...

Page 16: ...e we will upon compliance with the return instructions either credit replace or repair at our option the defective product provided it is returned within one year of the date of factory shipment 90 da...

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