Refrigerant Oil: Service Precautions

Refrigerant oil
Use the approved refrigerant lubricating oil:
Sanden SP10
Nippon Denso ND-OIL 8 (Diesel)

CAUTION: Do not use any other type of refrigerant oil.

Refrigerant oil easily absorbs water and must not be stored for long periods. Do not pour unused oil back into the container.

When renewing system components, add the following quantities of refrigerant oil:

Condenser 40 cu. cm
Evaporator 80 cu. cm
Pipe or hose 20 cu. cm
Receiver/drier 20 cu. cm

Total quantity of refrigerant oil in system =
150 cu. cm (Petrol)
140cu. cm(Diesel)

A new compressor is sealed and pressurized with Nitrogen gas, slowly release the sealing cap, gas pressure should be heard to release as the seal is broken.

NOTE: A new compressor should always have its sealing caps in place and must not be removed until immediately prior to fitting

Fitting a new compressor
A new compressor is supplied with an oil fill (X cu. cm) of:
150 cu.cm (Petrol), 140 cu. cm (Diesel)
A calculated quantity of oil must be drained from a new compressor before fitting.
To calculate the quantity of oil to be drained:

1. Remove sealing plugs from the OLD compressor.
2. Invert compressor and gravity drain oil into measuring cylinder. Rotating the compressor clutch plate will assist complete draining.
3. Note the quantity of oil drained (Y cu. cm).
4. Calculate the quantity (Q cu. cm) of oil to be drained from the NEW compressor using the following formula:

X cu. cm - (Y cu. cm + 20 cu. cm) = Q cu. cm

Rapid refrigerant discharge
When the air conditioning system is involved in accident damage and the circuit is punctured, the refrigerant is discharged rapidly. The rapid discharge of refrigerant will also result in the loss of most of the oil from the system. The compressor must be removed and all the remaining oil in the compressor drained and refilled as follows:
1. Gravity drain all the oil, assist by rotating the clutch plate (not the pulley).
2. Refill the compressor with the following amount of new refrigerant oil: 100 cu. cm (Petrol), 90 cu. cm (Diesel)
3. Plug the inlet and outlet ports.

Servicing Equipment
The following equipment is required for full servicing of the air conditioning system.

Recovery, recycling and charging station
Leak detector
Thermometer +20° C to 60° C
Safety goggles and gloves