3. Visually inspect expansion valvefordamage. Check for evidence of leakage.
1. Tape a thermometer to the tubing near the expansion valve sensing bulb.
2. Remove the access cover and two screws.
3. Connect a charging manifold, low pressure (suction) hose to the low pressure
service valve. See Figure 5-18. Make sure the high pressure hose and the center hose on the
charging manifold are either capped or plugged. Close the manifold valves.