TM5-3820-256-10
Table 3-14. Pump Continues Running; Will not Cycle (Cont'd.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4.
WORN PUMP.
Abrasives in water indi-
Contact direct support maintenance.
cate the pump may be
wearing. Reduce press-
ure setting of switch
until pump shuts off.
If pressure is insufficient,
unit must be replaced.
Table 3-15. Pump Starts Too Often.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
DEFECTIVE PRES-
Check the setting on
Contact direct support maintenance.
SURE SWITCH.
the pressure switch and
examine for defects.
2.
LEAK IN THE
Tank or delivery lines
Contact unit level maintenance.
SYSTEM.
may be leaking air
above water level.
3.
DEFECTIVE CHECK
Damaged or defective
Contact unit level maintenance.
VALVE.
check valve will not hold
pressure.
4.
AIR SUPPLY
Check air volume con-
Contact unit level maintenance.
(WATERLOGGED
trol or shifter valve
TANK).
for improper operation.
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