4-12
(4) 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.
REMOVING EXCESS COMPRESSOR OIL IS NOT COMPLETED.
REMOVE EXCESS COMPRESSOR OIL. THEN TAKE OFF THIS LABEL
Removing
oil lavel
oil plug
oil level gauge
Preperation
1. First check again whether the discharge/suction side stop valves
are opened and the cable connection at terminal is correct.
2. Connect gauge manifold hoses to the service ports on discharge
/suction side stop valves.
3. Opeate the unit for about 5 minutes and stop it.
4. Operate the S-PTI (Short PTI) and stop at step of "P10".
5. If the oil level can been seen on
the oil level gauge, conduct the
step 4 (Operate S-PTI and stop
at P10.) for oil returning again.
6.Bypass the gas from high pressure
side to low pressure side of gauge
manifold and adjust the low pressure
to 0 kPa or more.
7.Loosen the oil plug and remove the
excess oil.
8.Close the oil plug when no more oil
comes out.
9.Take off "Remove excess oil" lavel
sticked on compressor body.
Return the oil
to the comp-
ressor
Remove the
excess oil
(1) Set the ON/OFF switch to ON
(2) Go to PTI mode by pressing "Select" key immdiately for
3 seconds after all LED lighting OFF.
(3) Sellect S-PTI using "
or
" key and press "Enter" key,
and S-PTI starts.
(4) Stop the unit with ON/OFF switch when P10 is displayed
on the LED.
*P06 (HPS check)
When the high pressure rises,
the circuration rate of refrigeran
increaces and the oil is expecte
to return to the compresor.
*P08 (Pump down check)
The refrigerant contained in
the compressor oil is
evaporated and seperated
from the oil.
<Function of step P06 & P08 before P10>
Oil level
gauge
Excess oil
Oil plug
Remove
excess oil
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