Wilo Rain System AF Basic Notice De Montage Et De Mise En Service page 26

English
10 Faults, causes and remedies
Faults are only to be fixed by qualified service
technicians!
Faults
The pump does not start.
Motor overheating
Motor protection trips
Pump is running but not pumping
Pump is not pumping smoothly
The pressure generated by the pump is
not sufficient.
Rainwater utilisation system vibrates
20
Causes
No mains voltage.
Fuse defective
Motor protection tripped,
Pump not running smoothly,
Pump blocked
Inadequate voltage
Pump not running smoothly:
Foreign bodies in the pump
Rotors blocked,
Bearing damaged
Ambient temperature too high
Geodesic head > 1000 m
Motor defective
Supply voltage too low
Suction/pressure line or parts of the
pump are blocked by foreign bodies
Air in suction port
Air in the pump
Inlet pipe or suction line too narrow
Immersion depth of the foot valve too
low
Suction head too large
The suction filter/strainer are blocked.
The foot valve is blocked.
The suction line is blocked
The suction head is too large.
Check valve not opened sufficiently
Foreign matter is blocking the pump
Foreign matter in the pump
Pump not running smoothly
Attachment surface is not solid enough
The safety instructions in chapter 9
("Maintenance") must be followed.
Remedy
Check fuses, connections and the supply
line.
To acknowledge the fault, press the
control button on the pressure and
flow controller Ecocontrol PAC
(fig. 4, item 9d).
Renew fuse
Correct motor overload
Eliminate blockages of the pump
Eliminate blockage of the pump
Check voltage
Clean pump
Clean pump
Have the pump repaired by Wilo cus-
tomer service
Improve the cooling and perform a
restart after cooling down.
Pump is only approved for geodesic head
< 1000 m
Have the motor replaced by Wilo cus-
tomer service
Check mains voltage, capacitor and
cables
Check suction/pressure line and pump,
clean
Seal suction line
Fill the pump again
Install an inlet pipe or suction line with a
larger nominal diameter
Increase immersion depth of the foot
valve
Check water level in the cistern.
Position the rainwater utilisation system
closer to the ground
Clean:
• Suction filter/strainer
• the foot valve
• the suction line.
Check water level in the cistern.
Position the rainwater utilisation system
closer to the ground
Open the check valve
Clean pump
Remove the foreign matter
Check smooth running of the pump/
motor
Shore up attachment surface
WILO SE 11/2010