Step 6: Replace the faulty compressor and re-fit the other compressors
Replace the faulty compressor.
If the oil had been spoiled and was drained from the non-faulty compressor
in Step 3, use clean oil to clean them before re-fitting it into the unit. To
clean, add oil into the compressor through the discharge pipe using a funnel,
shake the compressor, and then drain the oil. Repeat several times and then
re-fit the compressors into the units. (The discharge pipe is connected to the
oil pool of the compressor by the inner oil balance pipe.)
Step 7: Add compressor oil
Add oil to each of the compressors from which oil was drained in Step 3.
Only use RB75EA oil. Different compressors require different types of oil.
Using the wrong type of oil leads to various problems.
Add oil to the accumulator from which oil was drained in Step 4.
Step 8: Vacuum drying and refrigerant charging
Once all the compressors and other components have been fully connected, vacuum dry the system and recharge
refrigerant.
Figure 6-2.6: Compressor piping
Discharge pipe
Suction pipe
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