216 Part Number STH025 11/16
Contamination Cleanup Chart
Symptoms/Findings Required Cleanup Procedure
No symptoms or suspicion of
contamination
Normal evacuation/recharging
procedure
Moisture/Air Contamination
symptoms
Refrigeration system open to
atmosphere for longer than
15 minutes
Refrigeration test kit and/
or acid oil test shows
contamination
Leak in water cooled
condenser
No burnout deposits in open
compressor lines
Mild contamination cleanup
procedure
Mild Compressor Burnout
symptoms
Oil appears clean but smells
acrid
Refrigeration test kit or acid
oil test shows harmful acid
content
No burnout deposits in open
compressor lines
Mild contamination cleanup
procedure
Severe Compressor Burnout
symptoms
Oil is discolored, acidic, and
smells acrid
Burnout deposits found in the
compressor, lines, and other
components
Severe contamination cleanup
procedure