Midea MC-SU60-RN1L Service Manual

Aqua Tempo Super II
201709 75
Part
4 - Diagnosis and Troubleshooting
 If the oil drained from the faulty compressor is clean, go to Step 6.
 If the oil drained from the faulty compressor is only lightly spoiled, go to Step 4.
 If the oil drained from the faulty compressor is heavily spoiled, check the oil in the other compressors in the system.
Drain the oil from any compressors where the oil has been spoiled. Go to Step 4.
Step 4: Replace oil separator(s) and accumulator(s)
 If the oil from a compressor is spoiled (lightly or heavily), drain the oil from the oil separator and accumulator in that
unit and then replace them.
Step 5: Check filters(s)
 If the oil from a compressor is spoiled (lightly or heavily), check the filter between the gas stop valve and the 4-way
valve in that unit. If it is blocked, clean with nitrogen or replace.
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 compressors in Step 3, use clean oil to clean them
before re-fitting them into the units. 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.
Step 7: Add compressor oil
 Add 2L of oil to the new compressor through the discharge pipe, using a funnel.
 Add 2L of oil to each of the compressors from which oil was drained in Step 3.
 Only use FV68H oil. Different compressors require different types of oil. Using the wrong type of oil leads to various
problems.
 Add additional oil to the accumulators such that the total amount of oil is 4.6L .
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 4-4.13: Inspecting compressor oil
This oil is black
- it has been
carbonized
This oil is a little
yellow, but is clear
and transparent and
the condition is
acceptable
This oil is still
transparent but there
are impurities which
may clog the filter

Midea MC-SU60-RN1L Specifications

General

Brand	Midea
Model	MC-SU60-RN1L
Category	Chiller
Language	English