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5 Trouble shooting
Disconnect the power and drain the system be-
fore beginning work on the pump!
Problem
Motor runs but
there is no flow of
water.
Motor does not
run
Pump continues
to run after all taps
have been closed.
Pump cycles while
tap is closed.
vetus® Automatic demand water pressure pump WP
W
arning
Possible cause
Empty water tank
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.
Empty water tank
Leak in the system.
Faulty pressure switch.
Incorrect voltage.
Air trapped in system.
Leak in outlet tubing.
Solution
Fill the tank or disconnect the
power to the pump.
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.
Refill.
Tighten leaking hose clamps /
fittings.
Replace pressure switch assembly.
Check voltage (± 10 %).
Open a tap as close to the pump as
possible.
Check plumbing for leakage.
ENGLISH
11
050406.02
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