TM 9-4520-258-14
4-27. AIR PRESSURE SWITCH - continued.
a.
Testing - continued (Refer to Figure 4-40)
(4)
Ensure all access doors are closed.
(5)
Turn MODE SWITCH (5) to the VENT position and observe meter indication.
(a)
If the air switch closes the meter will indicate continuity, proceed to step (6).
(b)
If the air switch does not close the meter will indicate infinity, switch is open; leave multimeter
attached and proceed to paragraph e. Adjustment.
(6)
Turn MODE SWITCH (5) to the OFF position.
(7)
Disconnect multimeter, close control panel lid (2) and control panel cover (1).
(8)
Disconnect power cable (3) from power source.
Figure 4-40. Air Pressure Switch, Testing
4-119
