|
| |
5-12.
TM5-4120-377-14
Except in cases where it is obvious that the refrigerant charge has been lost, the first step in troubleshooting
problems in the refrigeration system should be to check discharge and suction pressures under operating
conditions. Check pressures as follows:
a. Turn the mode selector switch to OFF.
b. Using screwdriver, remove four screws and flat washers from service valve access cover.
Figure 5-8. Access (Service Valves) Cover
c. Remove protective caps from service valves.
Figure 5-9.
Pressure Test Connection
d. Connect individual pressure gages, or a refrigeration charging manifold and hoses to the high
(discharge) and low (suction) service valves.
5-18
|
