Valeo TM31 - Oil Contamination; Oil Check

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3- Handling instructions
Oil contamination
Unlike engine oil, no cleaning agent is added
to the compressor oil. Even if the compressor is
run for a long period (approximately 1 season),
the oil never becomes turbid as long as there
is nothing wrong with the compressor or its
method of use. Inspect the extracted oil for any
of the following :
• Increased opacity of the oil.
• Color change to red.
• Presence of foreign matter, metal filings, etc.
Oil check
The compressor oil must be checked as follows
when being charged into a used system.
1. Perform the oil return operation (see p.16).
2. Remove the compressor from the vehicle.
3. Remove the oil filler plug and drain the oil
through the oil filler plug and the high and
low pressure connectors.
4. Check the oil for contamination.
5. Fill the compressor with the specified amount
of oil through the oil filler plug (see p. 18).
• Opacity
• Color change
• Foreign substances
• Metal filings
Oil filler plug
O-ring
Charge specified quantity
of compressor oil
WARNING!
When system (oil) contamination is
found during compressor replacement,
flush the A/C system with a fluid that
meets SAE J2670 and replace the drier (or
accumulator).