10 Servicing
427
SMGB0064 rev.0 - 08/2011
10
N O T E
• Compressor piping must be connected by brazing. MAKE SURE that any ammable material is not around
before heating with burner for the oil inside the piping may ame up.
• Do not expose the refrigerant cycle to the atmosphere for a long period to avoid moisture or dust into the
cycle. Be sure to replace the compressor immediately after removing. Seal the suction and discharge pi-
pes when the refrigerant cycle is left unattached for a long period.
• Remove the cap of new compressor right before the replacement. Before mounting the compressor seal
the suction and discharge pipes with a tape to protect the compressor from dust. Remove the tape when
blazing the pipe.
• For piping at reassembling ensure that the compressor terminal numbers and wiring mark band codes are
matched. Incorrect wiring numbers may result in inverse rotation and damage of the compressor.
8 Remove the suction pipe and discharge pipe from the compressor.
• Isolate the wires and electrical components to protect from the burner ame at brazing.
9 Remove two (2) nuts xing the compressor and remove the compressor from the unit by lifting in the condition of slightly
inclining forward.
10 When brazing the replaced compressor quickly perform the brazing while the compressor side piping is cooled with wet
cloth in order to avoid the brazing material from entering the compressor. If the brazing material enters the compressor
it will lead to compressor failure.
11 Reassemble the parts in the reverse order of removing procedures.
• Tighten the screws (U V and W) for compressor wires with 2.5 Nm.
• Fix the lead wire rmly.
1
2
3
4
5
6
7
1. Suction pipe.
2. Discharge pipe.
3. Cover pipes with wet cloth.
4. See compressor position table below.
5. Vibration-Proof rubber 2.
6. Nut and washer.
7. Vibration-Proof rubber 1.
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