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Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
TROUBLESHOOTING GUIDE
Read and understand safety and operating instructions in this manual
before doing any work on pump!
Only qualified personnel should electrically test pump motor!
FAILURE TO PUMP; REDUCED CAPACITY OR DISCHARGE PRESSURE
Suction leaks/lost prime:
1. Pump must be primed; make sure that pump volute is full of water. See
priming instructions, Page 7.
2. Make sure there are no leaks in suction piping.
3. Make sure suction pipe inlet is well below the water level to prevent
pump from sucking air.
4. Suction lift of 15 to 25 feet (4.5 to 7.5 meters) will reduce performance.
Suction lift of more than 25 feet (7.5 meters) will prevent pumping and
cause pump to lose prime. In either case, move pump closure (vertically)
to water source. Make sure suction pipe is large enough.
Clogged pipe/impeller, worn impeller:
5. Make sure impeller is not clogged (follow instructions under "Removal of
Old Seal", Page 9; check impeller for clogging; follow instructions under
"Installation of Rotating Part of Seal Unit", Page 9, for reassembly).
6. Impeller may be worn. If so, order replacement parts from Repair Parts
List, Page 11.
7. Pump may be trying to push too high a column of water. If so, a "higher
head" pump is needed.
Electrical:
8. Pump may be running too slowly; check voltage at motor terminals and at
meter while pump is running. If low, see wiring instructions or consult
power company. Check for loose connections.
9. Pump may be too hot.
A. Check line voltage; if less than 90% or more than 110% of rated volt-
age consult a licensed electrician.
B. Increase ventilation.
C. Reduce ambient temperature.
D. Tighten any loose connections.
MECHANICAL TROUBLES AND NOISE
1. If suction and discharge piping are not adequately supported, pump
assembly will be strained. See "Installation", Page 3.
2. Do not mount pump on a wooden platform! Securely mount on concrete
platform for quietest performance.
10
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