Mazda RX-8 Manual page 1685

CAUTION:
Close the manifold gauge valve immediately after stopping the vacuum pump. If the valve is left
•
open, the vacuum pump oil will back flow into the refrigeration cycle and cause a decrease in the
efficiency of the air conditioner.
8. Start the vacuum pump and let it operate for 15 min .
9. Verify that high- and low-pressure side readings of the manifold gauge are at − − − − 101 kPa {− − − − 760 mmHg,
− − − − 29.9 inHg} . Close each valve of the manifold gauge.
10. Stop the vacuum pump and wait for 5 min .
11. Inspect the high- and low-pressure side readings of the manifold gauge.
If the reading has changed, inspect for leakage and then repeat from Step 7.
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If the reading has not changed, go to next step.
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12. Open the valve of the refrigerant tank.
13. Weigh the refrigerant tank to charge the suitable amount of refrigerant.
(w) RX-8 - HVAC
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