Panasonic OCU-CR200VF5 Service Manual page 17

Compressor Replacement Procedure
10. Installing compressor securing nuts
Install the securing nut, flat washer, and protection rubber washer (three places) that were
removed in step "6. Compressor removal".
Cross-section (After fastening)
position
Highest
Protection rubber washer
Compressor leg
Note: 1. Incorrect attachment may cause excessive vibration and lead to a piping
breakage failure. Carefully check with the illustration shown above.
2. The securing nut on each compressor leg must be fastened once and then re-
fastened for confirmation purposes. (Fasten two times in total.)
Fastening order A⇒B⇒C⇒A⇒B⇒C, Fastening torque 12.8-14.3 N・m.
11. Airtight test
From the access port of the high and low pressure service valves, charge the refrigeration unit
with nitrogen at the specified pressure (8 MPa). (Refer to "Airtight Test Procedure".)
12. Gas leak test
Confirm that no leak is detected from the brazed part or other places.
13. Release of nitrogen
Release nitrogen from the access port of the high and low pressure service valves. (Refer to
"Refrigerant Releasing Procedure".)
14. Evacuation and refrigerant charging
Apply the evacuation from the access port of the high and low pressure service valves.
After reaching the specified vacuum level, continue the evacuation for 2 to 3 hours and then
charge the refrigeration unit with refrigerant. (Refer to "Vacuum Pump Attachment and
Evacuation Procedure" and "Refrigerant Charging Procedure".)
15. Completing wiring
1) Connect the compressor lead wires removed in step "2" by avoiding connection errors in
the R,S,T phases. (Connection described on the back of the terminal cover)
2) Attach the crankcase heater removed in step "3", back on the new compressor.
(2mm or greater)
(Place with the radius facing down.)
Radius facing down
A
C
Securing nut
Flat washer
Protection rubber washer
Compressor leg
Cushion rubber
Unit base
17
Compressor
B
3 places (A, B, and C)
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