Spare Parts - Wilo HiMulti 3 Instrucciones De Instalación Y Funcionamiento

English
Faults
The pump is turning but
there is no output flow
The pump is vibrating
The motor is heating up
excessively
The pump is not turning
The pump is not delivering
adequate pressure
The output flow is
irregular
If you cannot remedy the fault, please
contact WILO customer service.

11. Spare parts

All spare parts should be ordered directly from
WILO customer service.
To prevent errors, always quote the data on the
pump's rating plate when making an order.
The spare parts catalogue is available at: www.
wilo.com.
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Causes
The internal parts are obstructed by
foreign matter
Obstruction in the suction piping
Air entering via the suction piping
The pump is not full of water
Suction pressure is too low, and suction
is usually accompanied by cavitation
noise
The pump is rotating in reverse
The voltage of the power supply to the
pump is too low
The suction strainer is not submerged
Not fastened tightly to its foundation
Foreign matter in the pump
Difficult rotation of the pump
Poor electrical connection
Insufficient voltage
Pump obstructed by foreign matter
Ambient temperature greater than
+ 40°C
No electrical power
Pump blocked
The sensor on the motor protection
switch has tripped
The motor is faulty
The motor is not turning at its normal
speed (foreign matter, poor power sup-
ply to motor, ...)
The motor is rotating in reverse
Wear on the internal parts of the pump
The negative suction head (HA) is not as
required
The diameter of the suction piping is
less than that of the pump
The suction strainer or the suction pip-
ing is partially obstructed
Remedies
Dismantle the pump and clean it
Clean the entire piping
Check for leaks in the entire pipe up to
the pump and seal any leaks found
Prime the pump again by filling it
Too much friction loss on the suction side
or the negative suction head is too great.
Modify the installation accordingly
Contact customer service
Check the voltage of the power supply
Submerge the suction strainer (at least
700 mm).
Ballast the flexible hose piping if necessary
Check and fully tighten the nuts on the
anchor bolts
Dismantle the pump and clean it
Check that the pump can turn freely
without any abnormal resistance (with
the motor stopped)
Check the electrical connections
Check that the voltage is in accordance
with section 4.3
Dismantle the pump and clean it
The motor is designed to function at a
maximum ambient temperature of + 40°C
Check the power supply
Clean the pump
Allow the motor to cool
Replace it
Dismantle the pump and remedy the
problem
Contact customer service
Replace them
Review the installation conditions and the
recommendations made in this manual
The piping must have the same diameter
as the suction port on the pump
Dismantle and clean
WILO SE 11/2019