Download MTC Air Conditioner Service manual

CHAPTER3 CHECKOUT-CALIBRATION-MAINTENANCE PROCEDURES (A)
OIL RESERVOIR MAINTENANCE continue...
12. Carefully reinstall the oil reservoir and pump onto the shelf in the cabinet. Secure with the hardware
previously removed.
13. Reconnect the yellow hose to the "OIL" port, red hose from compressor to "INLET" port and red hose from
pneumatic block to "OUTLET" port.
14. Lower control panel and reconnect the two screws removed in step 5.
CALIBRATION COMPLETE
PUMP MAINTENANCE
PUMP PROCEDURE (CHANGING OIL)
1. Unplug unit from A. C. outlet.
2. Remove 2 bolts in front securing top. Lift top. Remove hoses attached to pump.
3. Remove bolts securing pump, and remove pump from unit.
4. Using a container to catch the oil tip pump over so oil drips out of port. (This procedure can take awhile)
5. Once completed install pump back into unit. Reconnect electrical contacts.
6. Connect hose to Vacuum port, disconnect other end.
7. Put 10 oz. of oil into a container, insert hose connected to vacuum port.
8. Plug in unit and turn on. Program 5 minutes of vacuum and 0 for all other entries. This will have the
compressor vacuum in the oil.
ALTERNATIVE IS TO USE A SECOND VACUUM SOURCE AND DRAW OUT THE OIL.
TOOLS: Vacuum Pump, Thin hose, Oil container and Oil.
1. Unplug unit from A. C. outlet.
2. Remove 2 bolts in front securing top. Lift top. Remove hoses attached to pump.
3. Insert thin hose into Vacuum port on compressor, other end should be connected to alternate pump.
4. Turn on pump and vacuum out oil into container.
5. Once completed remove thin hose, Reconnect hose to port.
6. Remove other end of hose from block and insert into new 10 oz. of Oil.
7. Plug unit into A.C. outlet and turn on. Program 5 minutes of Vacuum and allow compressor to vacuum oil.
8. Connect hose to block removed in step 6 and in step 2.
9. Check for leaks. Lower and secure top.
OIL CHANGE COMPLETE
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Effective
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