Fujitsu ASYA07LCC Service Instruction page 44

Be careful not to mix moisture and
contamination into the pipe
Moisture
Air purge
Always use a
Refrigerant charge
Don't charge from the
Compressor oil is changed
We developed new synthetic oil, since HFC
refrigerant doesn't dissolve in mineral (for R22)oil.
Be careful to handle synthetic oil, since it
resolves easily by moisture and contamination.
Don't mix new synthetic oil and mineral oil.
It may cause trouble.
and contamination
in the pipe is a cause of
trouble.
vacuum pump
gas phase side.
06-03
to purge air.
Do it always from the liquid
side.
phase