Troubleshooting Guide - STA-RITE MAX-E-PRO P6RA Series Owner's Manual

TROUBLESHOOTING
GUIDE
Read and understand safety and operating instruc-
tions in this manual before doing any work on
pump!
Only qualified personnel should electrically test
pump motor!
FAILURE TO PUMP; REDUCED CAPACITY OR DIS-
CHARGE PRESSURE
Suction leaks/lost prime:
1. Pump must be primed; make sure that pump volute
and trap are full of water. See priming instructions,
Page 8.
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 10 to 20 feet (3-6 M) will reduce per-
formance. Suction lift of more than 20 feet (6 M) will
prevent pumping and cause pump to lose prime. In
either case, move pump closer (vertically) to water
source. Make sure suction pipe is large enough.
Clogged pipe/trap/impeller, worn impeller:
5. Make sure suction trap is not clogged; if it is, clean
trap and strainer.
6. Make sure impeller is not clogged (follow steps 1
through 7 under "Removing Old Seal", Page 10;
check impeller for clogging; follow steps 7 through
10 under "Installing New Seal", Page 10, for re-
assembly).
7. Impeller and diffuser may be worn. If so, order re-
placement parts from Repair Parts List, Page 12.
8. Pump may be trying to push too high a column of
water. If so, a "higher head" pump is needed.
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
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 perfor-
mance.
11
Electrical:
9. Pump may be running too
slowly; check voltage at
motor terminals and at
meter while pump is run-
ning. If low, see wiring in-
structions or consult
power company. Check
for loose connections.
10. Pump may be too hot.
A. Check line voltage; if
less than 90% or more
than 110% of rated
voltage consult a li-
censed electrician.
B. Increase ventilation.
C. Reduce ambient
temperature.