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TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
REMEDY
1.
No discharge
a.
Pump speed too slow.
a.
Correct wrong or poor electrical
connections.
b.
Wrong direction or rotation.
b.
Reverse a three-phase motor by switching
any two of three power leads at the motor
or controller. Reverse a single phase motor
according to motor nameplate insturctions.
c.
Closed valve.
c.
Open valve.
d.
Obstruction in discharge
d.
Clear obstruction.
piping.
2.
Insufficient
a.
Pump speed too slow.
a.
See 1.a. above.
discharge
b.
Valve partially closed.
b.
See 1.c. above.
c.
Obstruction in discharge
c.
See 1.d. above.
piping.
d.
Rotor damaged.
d.
Replace rotors.
e.
Air leak in suction line.
e.
Check suction line joints.
f.
Cavitation
f.
See note at beginning of
Troubleshooting
section.
3.
Excessive
a.
Motor speed too high.
a.
Internal motor wiring is incorrect
power
replace motor; check line voltage.
consumption
b.
Rotors are binding.
b.
Relieve strain on casing; replace
defective rotors.
c.
Motor shaft is bent or worn.
c.
Replace shaft.
d.
Power frame shaft is bent
d.
Replace shaft.
or worn.
e.
Power frame bearings are
e.
Replace bearings.
worn.
f.
Excessive misalignment
f.
Align pump and driver.
between pump and driver.
Tri-Clover pumps are relatively maintenance free with the exception of sanitizing and lubrication.
Like any piece of machinery, however, occasional problems can arise. The troubleshooting chart
provides a means of determining and correcting most of your pump problems. The motor
manufacturer should be contacted for specific repair instructions on the motor.
Note:
The troubleshooting chart has been prepared on the basis that the pump as installed has
been properly suited to its application. Should problems arise where the remedies listed
in the troubleshooting chart do not cure the situation, pump cavitation may be the
problem. Symptoms of pump cavitation, such as noisy operation, insufficient discharge
and vibration, can result when a pump is not properly applied. If these conditions are
present, check the system and reevaluate the application. If assistance is required,
contact Tri-Clover.
TROUBLESHOOTING GUIDELINES
