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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
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