Oil Charge

A new service replacement FS-6 compressor contains 300 ml (10 fluid ounces) of the specified refrigerant oil. Prior to installing the replacement compressor, drain the refrigerant oil from the removed compressor into a calibrated container. Then, drain the refrigerant oil from the new compressor into a clean calibrated container. If the amount of oil drained from the removed compressor was between 90 and 148 ml (3 to 5 ounces), pour the same amount of clean refrigerant oil into the new compressor. If the amount of refrigerant oil that was removed from the old compressor was greater than 148 ml (5 ounces), pour 148 ml (5 ounces) of clean refrigerant oil into the new compressor. If the amount of oil removed from the old compressor was less than 90 ml (3 ounces), pour 90 ml (3 ounces) of clean refrigerant oil into the new compressor. This will maintain the total system oil charge within the specified limits. The suction accumulator/drier and orifice tube should also be replaced whenever the compressor is replaced.
When replacing other components of the air conditioning refrigerant system, measure the quantities of the specified refrigerant oil should be added to the component to ensure that the total oil charge in the system is correct before the system is operated. If any other components, such as an orifice tube or a hose are replaced, no additional refrigerant oil is necessary unless a hose bursts with a fully charged system.
Clean refrigerant oil should be added to the replacement components as follows:
1. EVAPORATOR CORE: Add 90 ml (3 fluid ounces).
2. CONDENSER: Add 30 ml (1 fluid ounce).
3. ACCUMULATOR: Drain oil from removed accumulator/drier. Add the same amount plus 60 ml (2 fluid ounces) of new refrigerant oil to the new accumulator.