Precaution When Replace The Compressor - Samsung DVM S ECO BIG Series Service Manual

3-3 Precaution when replace the compressor

■ Compressor replacement procedure
STEP
1 Close all service valves.
2 Execute a vacuum mode by pushing 4 times outdoor unit main PCB K1 switch to open all EEV and valves.
Refrigerant recovery need to use the recovery unit.
※ When there is no recovery unit, refer to below guides.
1) If the refrigerant discharge operation performs, remaining amount of refrigerant inside the outdoor unit
is about 1.5kg ordinary. In winter days, the outside temperature is low and there can be more remaining
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refrigerants.
2) Refer to the refrigerant quantity of factory charging printed on the outdoor label.
3) Can get help while deciding the additional refrigerant charging quantity by using the refrigerant quantity
decision function of S-Checker.
4 Turn off the power using circuit-breakers that is connected to the outdoor unit.
Remove the broken compressor
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※ Confirm all refrigerant was released from outdoor unit by manifold gauge, before using welder to remove
the compressor
6 Measure the weight of broken compressor.
7 Check the color of used oils from broken compressor.
8 Decide how much of oil should be added to the outdoor unit.
9 Replace a new compressor and add additional oil to the outdoor unit.
10 Turn on the power and execute vacuum mode again.
11 Leakage test by nitrogen gas and release all nitrogen gas from outdoor unit and evacuate again.
12 Add an additional refrigerant to the system which was decided step 3.
Open the service valve and choose Auto Trial Operation through pushing K1 switch in outdoor main PCB and hold
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1 time.
Samsung Electronics
Replacement procedure for 1 Compressor unit
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