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4-10
(3) Removal of excess refrigerant oil after
compressor replacement
The oil plug, oil level gauge and "Removing oil
label" are fitted on the spare parts compressor.
™
When the compressor is replaced to spare
parts compressor, remove the excess
refrigerant oil in the following procedure.
1. Connect manifold to the discharge and
suction ports.
2. Operate the unit for about 5 minutes.
3. Stop the unit.
4. Conduct oil return operation by using the
short PTI function of controller.
(1) Set the ON/OFF switch to ON.
(2) Push and hold the
key for 3 seconds
to enter PTI selection mode.
(3) Selecting the "S-PTI" mode using the
key and pushing the
key
activates the short PTI. Then, conduct
"P06" , "P08" steps displayed on the
LED.
P06/HPS check:
When the high pressure rises, the
circulation amount increases to return
the refrigerant oil to the compressor.
P08/Pump down check:
Evaporates the refrigerant contained in
the compressor oil.
(4) When "P10" is displayed on the LED,
stop the unit.
→
←
Oil plug
Excess oil
Oil
REMOVING EXCESS COMPRESSOR
OIL IS NOT COMPLETED.
REMOVE EXCESS COMPRESSOR OIL.
THEN TAKE OFF THIS LABEL
8. Close the oil plug when no more oil comes
out.
9. Take off "Removing oil lavel" sticked on
compressor body.
6. Bypass gas from high pressure side to low
pressure side of gauge manifold, adjust the
low pressure to 0kPa or more.
7. Loosen the oil drain plug and remove the
excess oil.
5. If the oil level can be seen on the oil level
gauge, conduct the step 4 oil return
operation again.
Removing
oil lavel
oil plug
oil level gauge
Remo
excess oil
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