A/C System Oil Charge Replenishing

If oil was removed from the A/C system during the recovery process, it must be replenished at this time.

1. Select the correct graduated bottle of replenishing polyalkaline glycol (PAG) oil for the R-134a A/C system being serviced.

2. Adjust the O-ring seal around the the PAG oil bottle to the required oil charge level.

Example: If bottle oil level is at 4 oz and 1/2 oz of oil is required, adjust O-ring seal to 3 1/2 oz as final level mark.

3. Install the bottle on the oil injection system on the back of the unit.


Important
- Keep the oil bottles tightly capped at all times to keep out moisture and contamination.

- Never open the oil injection valve while there is positive pressure in the A/C system. This will result in oil blow-back through the bottle vent. A/C system vacuum is required for this operation.

- Never let the oil level drop below the pickup tube while charging or replenishing. This will allow air into the A/C system.

4. Open the valve at the top of the plastic container and watch the level of oil being drawn into the system.

5. Close the valve when the required oil charge has been pulled into the system.