Electrical Connection; Mains Connection - Wilo RainSystem AF Comfort Notice De Montage Et De Mise En Service

7.4 Electrical connection

WARNING! Danger of electric shock!
Electrical connection must be carried out by an
electrician authorised by the local electricity
supply company and in accordance with the
applicable local regulations [e.g. VDE regula-
tions].
We recommend the provision of a residual cur-
rent circuit-breaker (RCCB).
Lead out the mains cable and sensor cable
through the appropriate ducts in the base car-
rier of the unit (left-hand section of lower
edge).
7.4.1 Connection of level sensor
The level sensor and separate connection plug are
supplied separately. The switchgear does not
need to be opened to connect the sensor.
WARNING! Damage to the level sensor from
excessive water levels.
The level sensor is designed for a measurement
range of 0 to 5 m Ws (water column of 0 to
5 metres). If the level sensor is submerged in a
greater amount of water, it can be damaged.
• Use the level sensor with water columns of no
more than 5 metres.
• Fix the level sensor in the collector tank according
to Fig. 3, Item 2. Fix the level sensor in such a way
that it can move freely, and at least 100 mm above
the foot valve on the connection line so that no air
can be sucked in when the collector tank is at its
minimum level. The method of fixing it in place will
vary depending on the design of the collector
tank.
• Route the connection line to the collector tank in
a protective pipe. The connection line must lie
loosely. Avoid kinks and knots.
• Route the connection line to the unit. If signal
cables and the connection line are routed in paral-
lel, make sure there is enough distance separating
them.
NOTE: Connection to the switchgear is by means
of a Quickon screwed connection.
• Join the connection plug (Fig. 5, Items 1-4) to the
connection line and screw it onto the connection
for level sensor (Fig. 5, Item 5).
NOTE: You can extend the level sensor connection
line if so desired. The total length of the connec-
tion line should however not exceed 40 m. For the
extension, use cable suitable for the local condi-
tions (possibly an underground cable with a cross-
sectional area of at least 2x0.5 mm²). The hose in
the level sensor connection line is used for meas-
uring the current air pressure and must therefore
always be in contact with the atmosphere. It does
not need to be extended to the switchgear.
Installation and operating instructions RainSystem AF Comfort

7.4.2 Mains connection

Mains power connection is by means of a two-
pole-and-earth socket outlet.
• Make sure that the type of current and voltage of
the mains connection corresponds to the details
on the name plate.
• Mains fuse protection: 10 or 16 A, slow-blow.
• Earth the pump in accordance with regulations; for
earth terminal see Fig. 6, Item 6.
• There is an alternative earthing option (Fig. 6,
Item 6) on the pump motor (PE marking).
• Ensure that the mains power plug of the unit
(Fig. 6, Item 4) is accessible at all times.
8 Commissioning
We recommend that the unit be commissioned by
Wilo after-sales service. Consult your dealer, a
Wilo representative, or central Wilo after-sales
service direct.
CAUTION! Danger of damage to the pump!
The mechanical shaft seal can be damaged by
dry-running of the pump.
• Before commissioning the complete unit, bleed
and fill the pump.
• Before commissioning, check that the float
valve is seated properly in the replenishment
reservoir.
Bleeding and filling the pump Fig. 7
• Unscrew the filling/vent plug at the top.
• Use a funnel to fill the pump with water through
the filling opening.
• Close the filling/vent plug again.
Checking the functioning of the float valve in
the potable water replenishment reservoir
• Make sure that the float is hanging freely, is not
wedged, and that the float valve is fully inserted in
the guide.
Adjusting the float valve in the potable water
replenishment reservoir
• NOTE: The float valve in the potable water replen-
ishment reservoir must be set so that it closes
about 3 to 5 cm below the overflow.
• Release the fixing clamp above the float element
in order to move the position of the float.
• Adjust the position of the float element by moving
it vertically.
• When you have set the specified closing level cor-
rectly, engage the fixing clamp again.
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