22
PUMP FAULT-TRACING CHART
DEFECT
REMEDY
HIGH VACUUM GAUGE READING RELATIVE TO SUCTION LIFT
Suction strainer choked.
Remove and clean.
FAILURE TO LIFT OR HOLD WATER
1.
Suction-hose joints leaking.
Check and tighten.
2.
Suction strainer not completely immersed.
Check and submerge.
3
Defective exhaust primer.
Check and rectify.
4.
Leaking priming valve.
Check and rectify.
5.
Delivery valve leaking.
Check and rectify.
BROKEN JETS WITH ‘AIR CRACKLE’
1.
Suction strainer:
a) Not completely immersed.
b) Too near the surface of the water supply.
Check and submerge.
2.
Slight leaks on suction-side of pump.
Check joints and tighten nuts.
THERMAL RELIEF VALVE ACTUATES
1.
Pump water overheating.
Avoid prolonged pumping
with closed nozzles.
If the remedies presented here do not clear the fault, then proceed with the
MONTHLY PUMP TEST as previously described.