Performance Test [Vehicles Using R-134a Refrigerant]

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PERFORMANCE TEST

The vehicles to be tested should be parked out of direct sunlight.





1. Close the high and low-pressure valve of the gauge manifold.
2. Connect the charging hose (blue) to the low-pressure valve and connect the charging hose (red) to the high-pressure valve of the gauge manifold.
3. Install the quick joint (for low-pressure) to the charging hose (blue), and connect the quick joint (for high-pressure) to the charging hose (red).
4.
CAUTION:

- To connect the quick joint, press section A firmly against the service valve until a click is heard.
- When connecting, run your hand along the hose while pressing to ensure that there are no bends in the hose.

Connect the quick joint (for low-pressure) to the low-pressure service valve and connect the quick joint (for high-pressure) to the high-pressure service valve.
NOTE:
The high-pressure service valve is on the A/C pipe and the low-pressure service valve is on the suction hose.

5. Start the engine.
6. Set the A/C controls as follows:

- A/C switch: A/C - ON position
- Mode selection: FACE position
- Temperature control: MAXIMUM COOLING position
- Air selection: RECIRCULATION position
- Blower switch: Maximum air volume
7. Set the engine speed to the idle speed.
8. Engine should be warmed up with hood, doors and windows opened.





9. Insert a thermometer in the center air outlet and operate the engine for 20 minutes.
NOTE:
If the A/C clutch cycles, take the reading before the clutch disengages.

10. Note the discharge air temperature.

PERFORMANCE TEMPERATURE CHART