Spare Parts - Wilo Helix-V 2 Instrucciones De Instalación Y Funcionamiento

10. Defects - causes - remedies
WARNING! Electrical shock hazard!
Dangers caused by electrical energy must be
excluded.
All electrical work must be performed after the
electrical supply has been switched off and
secured against unauthorized switching.
WARNING! Risk of scalding!
At high water temperatures and system pressure
close isolating valves before and after the pump.
First, allow pump to cool down.
Defects
Pump fails to operate
Pump runs but delivers too little
Pump delivers unevenly
Pump vibrates or is noisy
Motor overheats. Its protection trips out
Mechanical seal is leaking
If the fault cannot be solved, please
contact WILO customer services.

11. Spare parts

All spare parts must be ordered through WILO
Customer Services.
In order to avoid any mistakes, please specify the
name plate data for orders.
Spare parts catalogue is available at
www.wilo.com.
Subject to technical alterations!
WILO SE 09/2011
Causes
No current
The thermistor tripping device has trip-
ped out, cutting off power
Wrong direction of rotation
Parts of the pump are obstructed by
foreign bodies
Air in suction pipe
Suction pipe too narrow
The valve is not open far enough
Air in pump
Foreign bodies in pump
Pump not properly attached to ground
Bearing damaged
A phase is open-circuit
Ambient temperature too high
Mechanical seal is damaged
Remedies
Check the fuses, the wiring, and the con-
nectors
Eliminate any cause of overloading of the
motor
Check the direction of rotation of the
motor and correct it if necessary
Check and clean the pipe
Make the suction pipe airtight
Install a larger suction pipe
Open the valve properly
Evacuate the air in the pump; check that
the suction pipe is airtight. If required,
start the pump 20-30s – open the air
bleed screw in order to move air away –
close the air bleed screw and repeat it
several times until no more air is going
out of the pump
Remove the foreign bodies
Retighten the screws
Call WILO Customer Service
Check the fuses, the wiring, and the con-
nectors
Provide cooling
Replace the mechanical seal
English
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