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8 Commissioning
We recommend that the unit be commissioned by
WILO customer service.
CAUTION! Risk of damage to the pump!
Prior to commissioning of the rainwater utilisa-
tion system, the pump must be filled and bled. If
this not done, the mechanical shaft seal may
become damaged. Dry running, even for a short
period, can result in damage to the mechanical
shaft seal. The manufacturer's warranty does
not cover damage to the pump caused by run-
ning dry.
Perform filling and bleeding as follows:
• Remove filler screw from the filler opening (fig. 7)
• Using a funnel (fig. 7, item 21), slowly and com-
pletely fill the pump at the filler opening, until
water emerges from the opening
• Screw the filler screw back in tightly when the
water emerges free from bubbles
Next proceed as follows:
1. Check whether the float valve of the replen-
ishment reservoir is fully inserted in its guide
and that the float is hanging freely.
2. Open the fresh water supply to the replenish-
ment reservoir and check to ensure that the
float valve closes properly.
3. Close the check valve on the pressure side
(fig. 1, item 6)
NOTE: Ensure that there is enough water in the
cistern (sufficient water covers the drainage filter
and float switch in the position "Cistern Full") as
shown in fig. 6.
4. Insert plug into socket.
5. Press the control button on the RCB switch-
gear (fig. 2) to switch the rainwater utilisation
system to manual feed mode. The orange LED
light will flash. The pump and suction line will
be filled with water. The filling procedure ends
once water stops flowing into the replenish-
ment reservoir.
6. Press the control button on the RCB switch-
gear again to switch the rainwater utilisation
system to automatic mode. The green LED
permanently lights up if the cistern receives
enough water (cistern operation)
NOTE: if the cistern does not receive enough
water, the rainwater utilisation system will con-
tinue to operate in feed mode. The orange LED
light lights up permanently (feed mode).
Installation and operating instructions AF Basic
7. Open the check valve on the pressure side and
all places of use, in order, to allow any residual
air to escape from the system. The pump
should switch on during this process. If the
pump does not switch on and the red LED light
(fig. 4 item 9c) on the pressure and flow con-
troller lights up, press the fault acknowledge-
ment control button (fig. 4 item 9d).
NOTE: Repeat this procedure until the pump
remains in continuous operation and the red LED
light (fig. 4 item 9c) goes out.
8. After the water has drained successfully, close
the places of use and check whether the rain-
water utilisation system and joins are sealed.
9 Maintenance
We recommend the rainwater utilisation system is
maintained by Wilo customer service once a year.
Check for firm fit and leakiness of the float valve
check the rainwater utilisation system for leaks at
least once a year.
When the machine needs to be shut down for a
longer period of time,
• remove the power cable from the socket,
• close the connection to the public water supply
(fig. 1, item 6) and
• drain the rainwater utilisation system via the lower
drainage screw of the pump. Open the vent screw
to allow the air to flow in.
All maintenance and repair work must be carried
out by authorised and qualified personnel!
DANGER! Risk of fatal injury!
There is risk of fatal injury due to electric shock
when working on electrical equipment.
Before performing maintenance and repair
work, the pump must be disconnected from the
power supply and must be comprehensively
secured against being switched on by an unau-
thorised person.
Damage to the connecting cable are only to be
fixed by an electrician authorised by a local elec-
tricity supply company (EVU).
When performing a functional check on account
of a longer downtime, avoid making any contact
with the fluid.
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