Troubleshooting Guide

MRCOOL Universal Service Manual
65
1) The axial direction of the compressor should not slant at an angle larger than 20° to the horizontal
direction.
2) Prevent the compressor from falling.
3) Put a transparent container (over 150ml in volume) under the exhaust pipe to collect the compressor
oil, thus we can see the oil quality.
(3) Put the container of compressor lubricant in a bright location and see if there is impurity and
discoloration. Sniff at the compressor lubricant. Normally, there is no pungent smell.
(b) If the oil is contaminated, replace the compressor and the gas-liquid separator.
Note: Confirm whether the compressor needs to be replaced. The pipe mouths of the faulted compressor must
be sealed by adhesive tape as soon as the compressor is detached. Make sure the compressor is well preserved
for the ease of future analysis.
Step 6: Check the components
If the oil is contaminated, check the components of the unit, including the gas-liquid separator.
Check the gas-liquid separator
When the separator is detached, check whether there are impurities inside. Below is the checking method:
2. Remove the screw bolt of
the separator.
1. Remove the screw bolt of
the separator.
3. Remove the separator.