| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-242-14
0050 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HEATING, VENTILATION, AND
AIR CONDITIONING SYSTEMS (continued)
4. Water closet ventilation
3.
Use multimeter to check for 24 Vdc on both
2.
If 24 Vdc is available on
fan does not run
sides of the timer. (The door must be CLOSED
both sides of the timer,
(continued).
for less than 5 minutes to prevent the timer
use the wiring diagram in
from OPENING the circuit) (continued).
FO-2 to locate the OPEN
circuit. Repair the OPEN
circuit.
NAVIGATIONAL AIDS
1. Navigation lights will not
Use multimeter to check that circuit is
1.
If 24 Vdc is present, replace
light up.
energized with 24 Vdc.
the light.
2.
If 24 Vdc is not present, use
the wiring diagram in FO-2
to locate the OPEN circuit.
Repair the OPEN circuit.
POTABLE WATER SYSTEM
1. Potable water pump cuts
1.
Use multimeter to test pressure switch. The
Replace the pressure switch
off while operating.
switch should be CLOSED when the potable
if it is defective.
water pressure is between 11 and 22 lb/in
(0.8 and 1.5 bar) and open at all other
pressures.
2.
Use multimeter to test for power and ground
If power and ground are
at the motor.
present, and motor does not
run, replace the motor.
2. Potable water pump runs
1.
Check for check ball not seating.
Clean any debris from the
when the faucets are
housing and free check ball.
closed.
2.
Inspect tank and bladder valve for signs of
Repair or replace tank or
leakage.
bladder valve as necessary.
3. Potable water pump will
Inspect impeller and housing for damage.
Repair or replace impeller or
not pump water.
housing as necessary.
4. Potable water pump will
1.
Check for available voltage at pump. Must be
If available voltage is too
not prime.
at least 21.6 Vdc.
low, troubleshoot the 24 Vdc
electric system (WP
2.
Check the check ball for sticking.
Free the check ball.
3.
Check the motor seal for signs of leakage.
Replace the motor seal if it
is leaking.
4.
Check the impeller for damage.
Replace the impeller if it is
damaged.
0050 00-4
|
||
|
||
