Trooper LS V6-3.5L (1998)
3. Set the fan switch to its highest position.
4. Set air source selector lever to "CIRC".
5. Slowly open the low side valve on the manifold gauge set.
WARNING: BE ABSOLUTELY SURE NOT TO OPEN THE HIGH PRESSURE VALVE OF THE MANIFOLD GAUGE. SHOULD
THE HIGH PRESSURE VALVE BE OPENED, THE HIGH PRESSURE REFRIGERANT WOULD FLOW BACKWARD, AND THIS
MAY CAUSE THE REFRIGERANT CONTAINER TO BURST.
8. When finished with the refrigerant charging, close the low pressure valve of the manifold gauge and container valve.
9. Check for refrigerant leaks.
Checking the A/C system
1. Run the engine and close all the vehicle doors.
2. Turn A/C switch "ON", set the fan switch to its highest position.
3. set air source lever to "CIRC" and set temperature lever to full cool position.
4. Check the high and low pressure of the manifold gauge.
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Immediately after charging refrigerant, both high and low pressure might be slightly high, but they settle down to the pressure guide- lines
shown below:
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The ambient temperature should be between 25-30 °C (77-86 °F).
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The pressure guideline for the high-pressure side is approximately 1372.9-1863.3 kPa (199.1-270.2 psi).
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The pressure guideline for the low-pressure side is approximately 147.1-294.2 kPa (21.3-42.7 psi).
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If an abnormal pressure is found, refer to Checking The Refrigerant System With Manifold Gauge.
5. Put your hand in front of the air outlet and move the temperature control lever of the control panel to different positions. Check if the outlet
temperature changes as selected by the control knob.
