GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
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4) Check oil return pipes.
Remove oil return pipes and balance pipes, and check oil volume and impurity.
NOTE:
Before replacing the faulty parts, make sure to block their openings with tapes. They should
be kept intact for further analysis.
NOTE:
Volumes of oils drawn out from the oil separator, gas separator, and oil balancer should be
recorded. After faulty compressors and parts are replaced, you should fill new oils of equivalent amount
into the compressors and parts.
Step 6: Clear pipeline system.
Check pipelines for abnormalities. Charge nitrogen into the main pipeline and clear the pipeline
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