Daikin LXE10E-A14 Service Manual page 105

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(3) Procedure for removing refrigerant oil after
compressor replacement
™When the compressor is replaced, 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
to enter PTI selection mode.
(3) Selecting the "S-PTI" mode using the
key and pushing the
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.
5. Bypass gas from high pressure side to low
pressure side of gauge manifold, adjust the
low pressure to 0kPa or more, and then
loosen the oil drain plug. Oil removed is
complete when no more oil comes out and
gas starts coming out.
Oil plug
Oil
Gas
6. Close the oil drain plug to the original state.
Check the connection flanges and flare
nuts for gas leakage.
→ ←
key for 3 seconds
key
Excess oil
4-2
™Precautions when removing oil:
If the return air temperature inside the
container is higher than the ambient
temperature, the quantity of oil becomes
excessive. In this case, leave the "removing oil
label". Conduct the oil removing operation in
the PTI mode again after devanning.
If removal of the oil is complete at temperature
other than that the aforementioned, remove
the "removing oil label".
"Removing oil label"
REMOVING EXCESS COMPRESSOR
OIL IS NOT COMPLETED.
REMOVE EXCESS COMPRESSOR OIL.
THEN TAKE OFF THIS LABEL