20
WILO SE 03/2021
en
Preparation
• The current type and voltage must agree with the
specifications on the rating plate (7).
• Maximum back-up fuse: 10 A, slow-blow.
• Only operate the pump with sinusoidal AC voltage.
• Note the switching frequency:
- On/off switching operations via mains voltage
≤ 100/24 h.
- ≤ 20/h for a switching frequency of 1 min.
between switching on/off via mains voltage.
• The electrical connection must be made via a fixed
connecting cable equipped with a connector device or
an all-pole switch with a contact opening width of at
least 3 mm (VDE 0700/Part 1).
• Use a connecting cable with sufficient outer diameter
(e.g. H05VV-F3G1.5) to protect against leaking water and
to ensure strain relief on the threaded cable connection.
• Use a heat-resistant connecting cable where fluid
temperatures exceed 90 °C.
• Ensure that the connecting cable does not make con
-
tact with either the pipes or the pump.
Pump cable
connection
Installing the supplied mains connection cable (15)
• Press down the locking button of the 3-pin pump
plug and connect the plug to the plug connection (13)
of the control module until it snaps into place (Fig. 4).
CAUTION!
Pulsed mains voltage can cause damage to electronic
components.
• Never operate the pump with phase angle control.
• When switching the pump on or off using an external
control unit, deactivate any voltage pulse (e.g. phase
angle control).
• For applications where it is not clear whether the
pump is operated with pulsed voltage, get the con
-
trol/system manufacturer to confirm that the pump
is operated with sinusoidal AC voltage.
• Switching the pump on/off via triacs/solid-state
relays must be examined on a case-by-case basis.
