6 Trouble shooting
Disconnect the power and drain the system before beginning work on the pump!
Problem
Pump runs but
there is no flow of
liquid
Pump motor does
not run
Low pump capac-
ity or pressure.
Pump leaks.
Noisy or rough
operation.
vetus® Self-priming general purpose pump
Possible cause
Inlet / outlet tube restriction.
Strainer clogged with debris.
Leak in the suction pipe.
No power on pump circuit.
Loose or corroded electrical con-
nections.
Short circuit in wiring.
Thermal protection of motor has
been activated (motor is too hot).
Faulty motor.
Faulty pressure switch.
Locked drive.
Dirt in inlet filter.
Inlet / outlet tube restriction.
Inlet air leak.
Incorrect voltage.
Loose fasteners.
Pump seal broken.
Flexible mounting surface.
Compressed base feet.
Rigid plumbing.
W
arning
Solution
Remove restriction.
Clean strainer.
Tighten the hose clamps and check
the fittings.
Check wiring, fuse or circuit
breaker.
Check the electrical connections.
Check condition of wires.
Wait until there is an automatic
reset.
Replace pump.
Replace pressure switch assembly.
Replace pump.
Remove cover and clean filter.
Remove restriction.
Tighten fittings / Replace cracked
fittings.
Check voltage (± 10 %)
Tighten fasteners.
Replace seal.
Mount pump on rigid surface.
Decompress base feet.
Plumb pump with flexible plumb-
ing.
ENGLISH
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