Operation; Maintenance; Problems, Causes And Solutions; Electrical Connection - Wilo Rain-Collector II Einbau- Und Betriebsanleitung

on the cistern connection. The gradient of the overflow pipe
to the channel must be greater than 1 cm/m.
If the available space around the Rain Collector is very limi-
ted (e.g. installed directly against a wall), the overflow pipe is
no longer to be connected to the connecting sleeves on the
cistern dome for reasons of space. In this case the connec-
ting sleeves remain closed. Instead one of the two combined
inlet/overflows shown in fig. 7 is installed. When doing so the
highest point of the outflow knee (pos. 1) must be at the
height of the top of the cistern dome (check with spirit level).
The DN 50 rainwater inlet pipe is connected at pos. 2. Pos. 3
is the rainwater inlet in the cistern. Pos. 4 is the connection
for the rainwater overflow in the channel.
In the case of the 1500 AU unit the inlet pipe is to be protec-
ted against frost or drained in winter.
Observe DIN 1986!
ACHTUNG!
– It must be ensured by means of a suitable filter (e.g. waste
deflector, downpipe sieve) in the rain downpipe or in the col-
lector pipe that the rainwater collected in the reservoir is free
from suspended and settlable solids (filter systems as
accessories).
– The electrovalve for the fresh water infeed on the RWN 1500
A and AU units is to be fitted such that the vertical distance to
the top of the inlet funnel corresponds to twice the nominal
width of the electrovalve (free inlet to DIN 1988).
– In the case of the RWN 1500 AU unit it is recommended that
a shut-off valve be installed in the inlet pipe.
5.2

Electrical connection

Electrical connection should be made by a qualified
electrician. Current national regulations must be
observed (e.g. VDE regulations in Germany).
– The current type and voltage of the mains connection must
correspond to the appropriate information on the rating pla-
te,
– Observe rating plate data of the pump motor to be driven,
– Mains fuse: 10A time-lag fuse.
– Earth unit in accordance with regulations,
– The unit is installed ready to plug in.
Problem
Pump does not start
Pump does not switch off
Pump runs irregularly
If the problem cannot be rectified, please consult your dealer or Wilo customer service.
Cause dependent on unit
– Faulty PCB
– Diaphragm
– Faulty PCB
– Flow indicator blocked
– Reset button blocked
– Pump does not generate sufficient pressure
– Faulty printed circuit board (PCB)
– Pump does not generate sufficient pressure (air)

6 Operation

– Check the float switch can move freely.
– Check there is sufficient water in the reservoir.
– Vent or fill the pump at the yellow screw on the pressure pipe
connection.
– When operating for the first time, the pump starts for 8 sec-
onds, then a new pump test can be initiated by pressing the
reset button.

7 Maintenance

The Wilo Rain Collector is practically maintenance-free. To
ensure the highest degree of operating safety at the lowest
possible operating costs, it is recommended that the following
checks be carried out every 3 months:
– Check tightness of the pump's mechanical seal. The seeal
must be replaced if there are any visible droplets.
– Clean the cistern, the filter pipe and the filter systems used
by the customer, more frequently for heavily loaded units.
– If the unit is not used for long periods (e.g. holiday) the
cistern is to be emptied and if necessary valved off.

8 Problems, Causes and Solutions

Carry out the following checks in the event of a fault in the
unit:
– Foreign bodies in the reservoir,
– Leaf sieve in the downpipe is blocked up,
– Preliminary filter in the downpipe is blocked up,
– Float switch jammed,
– Fresh water supply defective,
– Test electrical connection (faulty fuse).
– Is the shut-off valve on the pump closed?
– Cistern overflow blocked up.
The following problems may occur in the Fluidcontrol control
unit:
Cause not dependent on unit
– Power failure
– Delivery rate too low
– Pump mechanically blocked
– Wilo Fluidcontrol connections mixed up
– Insufficient water
Leckage loss > 0,6 l/min
Leckage loss > 0,6 l/min
ENGLISH
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