Dry-Running Protection; Electrical Connection - Wilo Control SC-L FTS-Serie Einbau- Und Betriebsanleitung

INSTALLATION
• The depth of the borehole depends on the length
of the bolts. The borehole should be 5 mm deeper
than the bolt length.
• Drilling dust impairs holding strength. Therefore,
Always blow or vacuum out the borehole.
• Make sure the fixation material is not damaged
during installation.
5.3.2. Assembling the switchgear
Wall fixation
Fix the switchgear to the wall using 4 screws and
4 anchors.
1. Open the cover on the switchgear and place this
on the intended assembly area.
2. Mark out the 4 holes on the mounting surface and
place the switchgear on the floor again.
3. Drill the holes using according to the fixation
information using screws and anchors. If you are
using different fixation materials, observe the
information on usage!
4. Fix the switchgear to the wall.
Floor model
The floor model is supplied as standard with a
100 mm high pedestal with a cable inlet. It is
installed free-standing on a level surface with
sufficient bearing capacity.
Other supports are available on request.
Outdoor installation
The standard mounting pedestal with cable inlet
must be buried as far as the marking or recessed
in a concrete base. The switchgear is then fixed to
this pedestal.
1. Position the pedestal at the desired mounting
location.
2. Insert the pedestal into the ground as far as the
marking. We recommend fixing the pedestal using
a concrete base as this guarantees the greatest
possible stability.
Ensure the pedestal is plumb-vertical.
3. Secure the switchgear on the pedestal using the
enclosed fixation material.
5.3.3. Positioning of signal transmitters
For automatic control of the connected pumps,
a corresponding level control device must be
installed. This needs to be provided by the cus-
tomer.
Level sensors with varying measurement ranges
can be used as signal transmitters. The corre-
sponding signal transmitters must be installed
according to the unit's installation plan.
NOTE
The connection of the level sensor must be
made using an intrinsically safe electric circuit.
Consequently, the level sensor can also be used
within an explosive atmosphere!
Note the following:
• The minimum water level of the connected
pumps may not fall below the minimum!
Installation and operating instructions Wilo-Control SC-L...-FTS
• The maximum switching frequency for the con-
nected pumps may not be exceeded!

5.3.4. Dry-running protection

Dry-running protection is via the level sensor. The
appropriate switching value must be set via the
menu.
On reaching the dry running level, forced
switch-off of the relevant pumps occurs!
5.3.5. High water alarm
The high water alarm is via the level sensor. The
appropriate switching value must be set via the
menu.
Forced switch-on of the pumps does not occur!

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 company,
in accordance with locally applicable regula-
tions.
DANGER - explosive atmosphere!
Pumps may not be connected within an explo-
sive atmosphere. There is a risk of fatal injury
due to explosion! Connection must always be
carried out by a qualified electrician.
NOTE
• Depending on the system's impedance and the
connected consumers' max. no. of connections/
hour, voltage fluctuations or voltage drops may
occur. Always have the electrical connections
carried out by an electrician authorised by the
local energy supply company.
• When using shielded cables, the shielding must
be attached to the earthing rod on one side of
the switchgear!
• Observe the installation and operating in-
structions for the connected pumps and signal
transmitters.
• The mains connection current and voltage must
be as stated on the rating plate.
• Fuse protection on the mains side must be in
accordance with the data in the wiring diagram.
All-pole disconnecting, K-type circuit breakers
must be installed!
• A residual-current device (RCD, type A, sinusoidal
current) must be installed in the supply line. Ob-
serve the local laws and regulations on this too!
• Route the power supply cable in accordance with
the valid norms and regulations and according to
the wiring diagram.
• Ground the system (switchgear and all electric
consumers) in accordance with the regulations.
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