SYSTEM CONTAMINATION CLEANUP
GENERAL
This section describes the basic requirements for restoring contaminated systems to reliable service.
IMPORTANT
Manitowoc Ice, Inc. assumes no responsibility for the use of contaminated refrigerant. Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company.
Determining Severity Of Contamination System contamination is generally caused by either moisture or residue from compressor burnout entering the refrigeration system.
Inspection of the refrigerant usually provides the first indication of system contamination. Obvious moisture or an acrid odor in the refrigerant indicates contamination.
If either condition is found, or if contamination is suspected, use a Total Test Kit from Totaline or a similar diagnostic tool. These devices sample refrigerant, eliminating the need to take an oil sample. Follow the manufacturer’s directions.
If a refrigerant test kit indicates harmful levels of contamination, or if a test kit is not available, inspect the compressor oil.
1.Remove the refrigerant charge from the ice machine.
2.Remove the compressor from the system.
3.Check the odor and appearance of the oil.
4.Inspect open suction and discharge lines at the compressor for burnout deposits.
5.If no signs of contamination are present, perform an acid oil test to determine the type of cleanup required.
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