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WILO SE 03/2016 V06 DIN A4
English COMMISSIONING
5.4. Electrical connection
POTENTIALLY fatal danger due to electrical
voltage!
Incorrect electrical connections can cause fa-
tal electric shocks! Electrical connections may
only be carried out by a qualified electrician
approved by the local energy supply com-
pany, in accordance with locally applicable
regulations. For more about this, also read the
installation and operating instructions for the
fitted switchgear.
• The mains connection current and voltage must
be as stated on the rating plate.
• Earth the lifting unit according to the regulations.
The cross section of the cable for the earth
conductor connection must comply with local
regulations.
• A residual-current-operated protection switch
(RCD) must be installed in accordance with the
local regulations!
• The fitted switchgear must installed to be over-
flow‑proof.
• The power supply on the mains side for the
lifting unit with three-phase current connection
(3~400 V) must have a clockwise rotating field.
5.4.1. Mains fuses
The connection to the local power network is
done at the switchgear.
For this, observe the installation and operating
instructions for the fitted switchgear.
5.4.2. Mains connection
The lifting unit is equipped with a shock-proof or
CEE plug. To connect to the mains, a shock-proof
socket (acc. to VDE 0620 or the respective local
regulations) or a CEE socket (acc. to VDE 0623 or
corresponding local regulations) must be provided
by the customer.
Also observe the installation and operating
instructions for the fitted switchgear.
For exact details on connection, see the con-
nection diagram in this operating and mainte-
nance manual.
Fig. 9: Wilo-DrainLift S connection diagram
1 Motor contactor
2 Earth terminals
3 Terminal strip for signal transmitter and alarm signal
5.4.3. Adjusting the motor protection
The electronic motor protection in the switchgear
monitors the motor's maximum rated current.
This is a factory setting and it should be checked
again. To do this, check the positions of the indi-
vidual DIP switches.
Read the installation and operating instructions
for the fitted switchgear.
5.4.4. Connecting an external alarm signal
The switchgear is fitted with a buzzer in the
factory. In addition, an external alarm signal can
be connected via a potential-free contact (SSM)
in the switchgear (e.g. alarm switchgear, horn,
flash light).
The switching level for the alarm signal is about
220 mm (above the installation surface upper
edge).
NOTE
Note the switching level for the alarm signal if
you want to protect drainage fixtures that are
on a lower level!
See the installation and operating instructions for
the switchgear for precise information about the
switch contact and the individual work steps for
connecting it.
5.4.5. Operation with frequency converter
Operation on the frequency converter is not
possible.
6. Commissioning
The “Commissioning” section contains all the
important instructions for operating personnel
on commissioning and operating the lifting unit
safely.
The following general conditions must always be
met and checked:
• Operating mode
• Max. intake/h
• Max. suction head
These general conditions must also be checked
after a lengthy period without operation, and
any defects detected must be repaired!
Always keep this manual either by the lifting unit
or in a place specially reserved for it, where it is
accessible for all operating personnel at all times.
In order to prevent damage or serious injury when
commissioning the lifting unit, the following
points must always be observed:
• Electrical engineering and mechanical settings as
well as commissioning of the lifting unit are only
allowed to be carried out by qualified and trained
personnel in accordance with the safety instruc-
tions.
• All persons working on or with the lifting unit
must have been provided with this manual and
have read and understood it.
• All safety devices and emergency cut-outs must
be connected and checked to ensure that they
work properly.
• The lifting unit is suitable for use under the speci-
fied operating conditions.
• When working in pump chambers, a second per-
son must be present for safety reasons. If there is
a risk of toxic gases forming, sufficient ventilation
must be ensured.
