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14 WILO SE 11/2015
For applications where it is not clear whether the pump will be
operated with pulsed pump voltage, e.g. with storage charge
pumps, the manufacturer of the control system must confirm
that the pump can be operated with sinusoidal AC voltage.
• The current type and voltage must correspond to the details on
the name plate.
• It is recommended to safeguard the pump with a residual-cur-
rent-operated protection switch.
Labeling: FI - or
When dimensioning the residual-current-operated protection
switch, take the number of pumps connected and their nominal
motor currents into account.
• Connect the Wilo-Connector (Fig. 4a to 4e).
• Mains connection: L, N, PE.
• Maximum back-up fuse: 10 A, slow-blow
• Earth the pump according to the regulations.
Dismantle the Wilo-Connector in accordance with Fig. 5.
A screwdriver is required for this.
• The electrical connection must be made in accordance with
VDE 0700/part 1 via a fixed connected load. The latter is pro-
vided with a plug device or an all-pole switch with a contact
opening width of at least 3 mm.
• To ensure drip protection and strain relief at the PG screwed
connection, a connected load with an adequate outer diameter
is necessary (e.g. H05VV-F3G1.5).
• When pumps are used in systems with water temperatures
above 90°C, a suitably heat-resistant connected load must be
installed.
• The connected load is to be installed in such a way that it can
under no circumstances come into contact with the piping
and/or the pump and motor housing.
• The switching of the pump via triacs/solid-state relays is to be
checked on an individual basis.
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