Installation; Mechanical Installation; Mounting Bracket; Electrical Installation - Grundfos LLC 1000W Bedienungsanleitung

5. Installation

Warning
Installation and operation in a potentially
explosive environment are not permissible.
Make sure that the power supply cannot
be accidentally switched on during
installation. We recommend that you
unplug the control box from the socket.
The electronic connections on the control
box must not be exposed to moisture.

5.1 Mechanical installation

5.1.1 Mounting bracket

Attach the bracket using the two screws on the
electrode bracket. See fig. 3.
The long side must face upwards.
Note
Rod electrodes
Fig. 3 Place the mounting bracket on the
electrode bracket
5.1.2 Electrode bracket
The electrode bracket can either be attached directly
to the pump or to a tank wall.
The level controller can be used for Grundfos pump
types Unilift CC and Unilift KP.
The length of the electrodes must be adjusted to the
length of the pump. The difference in length between
the start and stop electrodes corresponds to the
switching differential.
The control electrodes must not come into
contact with the pump or the walls of the
pump pit. The frame electrode must be the
longest electrode and may touch the
bottom.
Make sure that the pump stop point as
Caution
specified by the electrode length is safely
reached.
Make sure that the pump stop point as
specified by the electrode length is safely
reached.
It may be necessary to shorten the stop electrode. If
the electrodes are to be trimmed to change the
switching points, cut the protective tube at the
bottom end of the electrodes by approximately 5 mm
after trimming. Tighten the rod electrodes gently with
pliers prior to startup in order to prevent them from
coming loose during pump operation.
Assembly on the pump
Push the electrode bracket onto the pump pressure
outlet using the mounting bracket, so that the
electrodes face down. Then connect the electrode
bracket to the discharge port of the UNILIFT KP
using the 3-stage pressure outlet of the UNILIFT CC
supplied with the pump or using the attached 1 1/4"
barrel nipple.

5.2 Electrical installation

Warning
Connection work must be carried out by
authorised staff.
The level controller is now ready for connection.
Electrical connection work on the device itself is not
necessary if the pump is equipped with a plug.
If electrical connection work is required in order to
use certain functions or to connect the power supply
for the pump and the mains directly to the control
box, and thus not use the sockets, detach the rear
wall of the control box.
Warning
Make sure that the power supply cannot
be accidentally switched on during
electrical installation. We recommend that
you unplug the control box from the
socket.
If the potential-free alarm contact is to be used to
forward the alarm signal to a main controller, connect
the signal cable to terminal block X2, terminals 3 and
4.
If the filling function is to be used instead of the
emptying function, move the lead from terminal X1-1
to terminal X1-2.
7