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installing a valve on the
discharge line and restricting
flow. Alternatively, reduce
pump head by trimming impeller
to a smaller diameter. Consult
local Price Pump dealer for
assistance.
CAUTION
Disconnect power to pump
before servicing to avoid
dangerous or fatal electrical
shock hazards.
If pump has been used to
pump hazardous materials be
certain that all materials have
been removed prior to
working on the pump.
Inverting pump with liquid in
it could cause liquid to get
into motor bearings and cause
damage. Before disassembling
be certain all liquid is
removed from the pump.
Price® Pump Co. Model XJ & JB Series
21775 8th Street East w P.O. Box Q w Sonoma, CA 95476-0329 w (707) 938-8441 w Fax (707) 938-0764
TROUBLESHOOTING
1. Pump fails to build pressure:
Check for:
a. Pump not primed.
b. Incorrect rotation.
c. Driver speed too low.
d. Suction line restricted.
e. Driver failure.
f. Plugged or damaged
impeller.
g. Pump or impeller
undersized.
h. Pump cavitation.
i. Impeller rubbing volute.
2. Pump fails to provide
enough flow.
Check for:
a. System resistance too high.
b. Pump undersized.
c. Pump not primed.
d. Driver speed too low.
e. Poor suction conditions
f. Impeller rubbing volute due
to improper installation.
g. Pump cavitation.
h. Plugged or damaged
impeller.
3. Excessive noise or vibration
during operation.
Check for:
a. Motor bearing failing.
b. Pump cavitating.
c. Impeller rubbing volute.
Page 3 of 8
4. Leaking mechanical seal.
Check for:
a. Improper assembly.
b. Worn or cracked seal
faces.
c. Abrasive material build up
around seal.
d. Liquid flashing at seal faces
(temp too high).
e. Seal pressure rating too
low for the service.
f. Chemical attack of seal
parts.
g. Seal operated dry or with a
liquid having poor
lubricating properties.
5. Pump gradually loses
pressure and head.
Check for:
a. Increasing temperature
causing cavitation or liquid
vaporization.
b. Driver failure.
c. Suction lift too high.
d. Air entering suction line.
6. Motor/pump overheating.
Check for:
a. Excessive flow and amp
draw. (Throttle discharge)
b. Low voltage or frequency.
c. Flow too low with
resulting heat rise.
d. Bearing failure.
e. System temperature too
high.
I&O IN164 12/14/01
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