Spare Parts - Wilo Rain System AF Basic Notice De Montage Et De Mise En Service

Faults
Pump switches on and off too frequently
when water is drawn off
The pump has a leak.
The float valve in the replenishment res-
ervoir does not close/the water flows
into the overflow.
The switching valve is blocked.
An error appears on the RCB switchgear
or pressure and flow controller Ecocon-
trol.
The red LED light on the RCB switchgear
lights up and the associated error mes-
sage appears.
Feed mode is active even though the cis-
tern is full.
If the fault cannot be remedied, please contact
your nearest Wilo customer service point or rep-
resentative. Only Wilo customer services are
authorised to install/remove the devices during
the warranty period.
Installation and operating instructions AF Basic
Causes
Minor leakage in the system.
The non-return valve of the pressure and
flow controller no longer closes.
Draw-off volume too low
The mechanical shaft seal is faulty.
The float valve has come undone or is
mechanically stuck.
The blockage is caused by deposits on
the valve seat.
The float switch did not switch to
replenishment when the minimum water
level in cistern was reached. Cable dam-
aged or the float switch trapped in the
cistern.
The control button on the RCB switch-
gear is blocked.
The RCB switchgear is in manual mode.
Float switch has not switched to replen-
ishment in spite of minimum water level
in cistern. Cable damaged or the float
switch trapped in the cistern.
Remedy
Close pressure pipe, determine the cause
of the fault, and remedy.
Clean the pressure- and flow controller,
replace if necessary.
Extend switch cycle using suitable
measures:
• Increase the minimum volume flow
• Install a diaphragm pressure vessel on
the pressure side
Renew pump.
Carry out a visual inspection.
Where necessary, adjust/secure the con-
nection to the public water supply.
Clean the tank and/or the float valve.
Carry out a visual inspection.
Where necessary, uninstall and then
reinstall the drive.
Carry out a visual inspection.
Remove a possible blockage of the float
switch and/or check proper functioning
of its contacts.
Remove the cover from the RCB switch-
gear and realign the button properly.
We recommend you check the operating
mode afterwards.
Press the control button on the RCB
switchgear.
Carry out a visual inspection.
Remove any blockage of the float switch
and/or check proper functioning of its
contacts.

11 Spare parts

Spare parts may be ordered via local professional
technicians and/or the WILO customer service.
To avoid queries and order errors, please supply all
data on the name plate with every order
Subject to change without prior notice!
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