SECTION D - TROUBLESHOOTING
Review all SAFETY information in Section A.
18
Before attempting to open or service the pump
:
1. Familiarize yourself with this manual.
2. Lock out or disconnect the power source to ensure that the
pump will remain inoperative.
3. Allow the pump to cool if overheated.
4. Check the temperature before opening any covers, plates, or
plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
WARNING!
TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
PUMP FAILS
TO PRIME
Not enough liquid in casing.
Suction check valve contaminated or
damaged.
Air leak in suction line.
Lining of suction hose collapsed.
Leaking or worn seal or pump gasket.
Suction lift or discharge head too high.
Strainer clogged.
Add liquid to casing. See
PRIMING.
Clean or replace check valve.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leaking
or worn seal or gasket.
Check piping installation and install
bypass line if needed.
See INSTALLATION.
Check strainer and clean if necessary.
EXCESSIVE
NOISE
Cavitation in pump.
Pumping entrained air.
Pump or drive not securely mounted.
Impeller clogged or damaged.
Bearing temperature is high, but within
limits.
Low or incorrect lubricant.
Suction and discharge lines not properly
supported.
Drive misaligned.
Reduce suction lift and/or friction losses
in suction line. Record vacuum and
pressure gauge readings and consult
local representative or factory.
Locate and eliminate source of air bubble.
Secure mounting hardware.
Clean out debris; replace damaged parts.
Check bearing temperature regularly to
monitor any increase.
Check for proper type and level of
lubricant.
Check piping installation for proper
support.
Align drive properly.
BEARINGS
RUN TOO HOT