Panasonic NR-B203G-S7 Service Manual page 13

2. PREPARATION
1. Remove Cover Protector from Compressor
2. Replace Starting Relay.
3. Replace Over Load Protector (OLP).
3. DISCHARGING THE REFRIGERANT
Cut the compreesor sharge pipe and capillary
pipe near Dryer to discharge Refrigerant.
4. REMOVING THE COMPRESSOR
1. Disconnect the discharge pipe from the
compressor with brazing.
2. Disconnect the Suction
compressor with brazing
3. Remove the Compressor.
Plastic Bag (70x50mm)
6. PURGING THE PIPE IN THE REFRIGERATING UNIT
Caution :
1. For purging the pipe, use HFC-134a as liquid state only.
Never use cleaning liquid which contain chlorine and blowing agent such CFC-12,
22, CFC-113, HCFC-141b and R-502.
2. Standard of purging the pipe
Purging the pipe is necessary when compressor oil deteriorates severely and when compressor oil
contains impurity.
Continue to purge the pipe until no stained liquid come out.
All pipes except for compressor and dryer should be cleaned by purging.
pipe from the
5. MEMERIKSA OLI COMPRESSOR
20 mm (Oil Amount 10 mm)
-12-
Compressor
Discharge Pipe
CHECKING THE COMPRESSOR OIL
1. Prepare a clean vinyl bag (enclosed in the
compressor part case ) for the oil.
Tilt the compressor slowly and let a little oil
2.
(approx. 10 ml) flow out from the charge pipe.
Note:
On case of clog caused by solid substance,
whwn compressor oil has no discoloration
(light yellow) the compressor is installed as it
was. So don't collect the oil more than approx.
10 ml. Otherwise it may case a malfunction.
3. According to "Diagnosing standard" of the
degree of the case of discoloration of the oil.
4. The treatment of the case should be decided by "
Repairing Standard of HFC-134a Refrigerating
Unit".
Joint Suction Pipe
Suction
Dryer
HCFC-