PSH YESA Serie Manual De Instrucciones página 23

Possible problems
The motor does not start
The motor does not start
or starts and stops
automatically
The motor does not start
or overheats or starts and
stops automatically
The motor runs but no
water is pumped
The motor runs but the
pressure is low or the
flow rate is lower than
normal
The motor runs but stops
automatically
Replace the pump with a
more suitable one
The shaft spins with
difficulty
Manual_YESA.indd 23
Possible reasons
The fuse or thermal switch are
disconnected.
The pump is blocked.
Wrong voltage or frequency.
Air enters through suction pipes of
the pump.
The foot valve is not properly
submerged. The pump has not been
primed.
Head higher than the expected one.
Insufficient aired place.
Liquid viscosity too high.
Solid particles inside the pump.
Hot motor ball bearings.
Solutions
Change the fuse or let the motor cool down so
that the thermal switch turns on.
Dismantle the pump and contact with your
customer service.
Check the voltage.
Power voltage should be as per the pump label.
Check pipes are sealed.
Check that the foot valve is submerged.
Prime the pump properly.
Water level has been lowered, increasing
consequently the total water head.
Check geometric height and charge loss.
Adjust suction head.
Increase ventilation.
Replace the pump with a more suitable one.
Switch off the pump and contact with your
customer service.
Replace motor ball bearings.
GB
11/4/08 16:47:47