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6. Charging Compressor Oil
6-2. If Outdoor Unit Has Not Been Charged with Refrigerant
When a compressor has been replaced or in any other case where the outdoor unit has not been charged with
refrigerant, first charge with refrigerant then follow the instructions in "6-1. If Refrigerant Has Already Been
Charged to Outdoor Unit" and charge with oil.
Or, alternatively, follow the procedure below.
(1)
Connect a tube to the low-pressure outlet port on
the outdoor unit to be charged with oil. Insert the
other end of the tube into the oil container.
(2)
Follow the instructions in "5. Evacuating System,"
and apply vacuum to the outdoor unit to be
charged with oil. When this is done, oil is charged
into the outdoor unit through the oil outlet port.
(3) When the unit has been charged with the
designated amount of oil, stop the vacuum pump.
CAUTION
1
2
6-3. Charging Additional Compressor Oil (After Replacing Compressor)
Model name
3
CHX03652/05252
CHXR03652/05252
The rated amount of oil is pre-charged in the compressors as given below.
4
When replacing a faulty compressor, be sure to first measure the amount of remaining oil in the compressor.
Charge additional new oil equal to the difference in the remaining oil and the rated amount as listed above.
For example: Type of replaced compressor: C-9RVN273H0W
Remaining oil in the removed compressor: 0.55 gal
5
Additional oil to be charged: 0.55 gal (remaining oil) – 0.50 gal (rated oil amount) = 0.05 gal
* If the result is a negative amount (remaining oil is less than the rated amount), it is not necessary to discharge
the extra oil from the system.
6
For the method used for additional oil charging after compressor replacement, refer to "6-1. If Refrigerant Has
Already Been Charged to Outdoor Unit."
Because oil absorbs
moisture readily, this work
must be completed quickly.
Compressor model
C-9RVN273H0W
(Inverter-controlled rotary compressor)
Outdoor Unit Repair Procedures
Manifold
gauge
Lo
Vacuum pump
High-pressure
outlet port
(For ø5/16"
connector)
Oil
Fig. 13
Q'ty
Pre-charged amount of oil (gal)
1
2 - 16
Mini ECO-i SYSTEM
Low-pressure outlet port
(For ø5/16" connector)
Hi
0.50
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