TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
PUMP FAILS TO
PRIME
Strainer clogged.
Check strainer and clean if neces-
sary.
Suction lift or discharge head too high.
Check piping installation and install
bypass line if needed. See
INSTAL-
LATION
.
Leaking or worn seal or pump gasket.
Check pump vacuum. Replace
leaking or worn seal or gasket.
Lining of suction hose collapsed.
Replace suction hose.
Air leak in suction line.
Correct leak.
Discharge check valve contami-
nated, damaged, or unable to seat.
Clean or replace check valve.
Air compressor damaged or belts bro-
ken.
Check and repair/replace.
Eductor safety valve leaking.
Check and replace safety valve.
Pump speed too slow (engine driven
units).
Check driver output; consult driver
operation manual.
Eductor clogged.
Check and clean eductor.
PA SERIES PUMPS
MR−05740
TROUBLESHOOTING
PAGE B − 1
TROUBLESHOOTING − SECTION B
Review all SAFETY information in Section A.
Before attempting to open or service the
pump:
1. Familiarize yourself with this manual.
2. Shut down the engine and discon-
nect the positive battery cable (en-
gine driven units) or lock out and tag
out incoming power to the control
box (electric motor driven units) and
take precautions to ensure that the
pump will remain inoperative.
3. Allow the pump to completely cool if
overheated.
4. Check the temperature and make
sure pump is cool 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.
