T M 5 - 4 1 2 0 - 3 7 5 - 14
Perform the pressure test in the following manner:
a. Turn the rotary selector switch to COOL, and the temperature control
thermostat to maximum DECREASE at 65 degrees F (18 degrees C) or
g r e a t e r.
Slowly open the suction line and discharge line service valves to
which pressure gauges have been connected.
c. Let the air conditioner operate for at least 15 minutes in the cooling
retie, so that all parts of the system are stabilized.
Record the temperatures indicated by
pressures indicated by both pressure
both thermometers and the
e. Compare the readings obtained from pressure testing with the normal
ranges shown in Table 5-2.