Clean Up Procedures
At times it might be necessary to perform a system clean up if the system has
been contaminated by a “Burn Out”. In order to determine this, an acid test has to
be performed on the compressor oil.
If the acid test fails, you will have to install a clean up filter in series with the
suction line.
1. Remove all internal parts of the expansion valve, and re assemble valve
body,
2. Remove receiver drier and install straight copper pipe or hose to bridge
the system.
3. Install suction line clean up drier between the evaporator outlet and the
compressor inlet.
4. Check for leaks.
5. Evacuate the system to proper levels.
6. Weigh in proper refrigerant charge and oil charge.
Remove
drier and
install
straight
pipe
Install
Suction
Line
Drier
Remove internal
parts of
expansion valve
Evaporator Condenser
Compressor
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