Installation; Location; Mechanical Installation; Electrical Connection - Grundfos LC 221 Montage- Und Betriebsanleitung

5. Installation

Warning
Before making any connections in LC 221 or
working on pump, pit, etc., make sure that the
power supply has been switched off and that it
cannot be accidentally switched on.
The installation must be carried out by authorised personnel in
accordance with local regulations.

5.1 Location

Warning
Do not install the LC 221 controller in explosion
hazard areas.
Install the controller as close as possible to the lifting station.
When installed outdoors, LC 221 must be placed in a protective
shed or enclosure. LC 221 must not be exposed to direct sunlight.

5.2 Mechanical installation

Warning
When drilling the holes, take care not to damage
any cables or water and gas pipes. Ensure a safe
installation.
LC 221 can be mounted without removing the
Note
front cover.
Proceed as follows:
• Mount LC 221 on a plane wall surface.
• Mount LC 221 with the cable entries pointing downwards
(additional cable entries, if required, must be fitted in the
bottom plate of the cabinet).
• Mount LC 221 with four screws through the mounting holes in
the back plate of the cabinet. Drill the mounting holes with a
6 mm drill using the drilling template supplied with the
controller. Fit the screws into the mounting holes and tighten
securely. Fit plastic caps if provided.

5.3 Electrical connection

Warning
LC 221 must be connected in accordance with the
rules and standards in force for the application in
question.
Warning
Before opening the cabinet, switch off the mains
supply.
The operating voltage and frequency are marked on the controller
nameplate. Make sure that the controller is suitable for the
electricity supply on which it will be used.
All cables/wires must be fitted through the cable entries and
gaskets.
The power supply socket must be placed near the cabinet as the
controller is supplied with a 1.5 m cable, a Schuko plug for
single-phase and a CEE plug for three-phase pumps.
Maximum backup fuse is stated on the controller nameplate.
If required according to local regulations, install an external mains
switch.
5.3.1 Battery
The LC 221 controller can be equipped with a battery. However,
the battery does not buffer any data. Its only function is to activate
the buzzer in case of a power failure. Depending on the charging
level of the battery, the buzzer can run on battery power for a
couple of days.
If the customer requires this function, connect a
non-rechargeable battery to connector 21 shown in fig. 6.
Use non-rechargeable batteries only. The
Note
controller is not equipped with a charging device.
If present, the battery should be replaced as part
Note
of annual maintenance.
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