Electrical Installation - Grundfos Conlift1 Montage- Und Betriebsanleitung

7.2 Electrical installation

Carry out the electrical connection according to local
regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Warning
Check that the installation has a 1 A
slow-blowing fuse on the mains side and
an earth leakage circuit breaker according
to IEC 345.
The breaking capacity of the fuse must not
exceed 1 A.
The power supply cable has a Schuko plug or a free
cable end. The cable has a length of 2 metres.
Warning
The power supply cable with a free cable
end must be connected by an authorised
electrician.
Warning
If the power supply cable is damaged, it
must be replaced by the manufacturer, the
manufacturer's service partner or similarly
qualified person.
Warning
Before starting work on or moving Conlift,
make sure that the power supply has been
switched off and that it cannot be
accidentally switched on.
Warning
As a precaution, Conlift must be connected
to a Schuko socket or socket with earth
connection.
We recommend to provide the permanent
installation with an earth leakage circuit
breaker (ELCB) with a tripping current < 30
mA.
Conlift must be connected to an external
mains switch with a minimum contact gap
of 3 mm in all poles.
8
7.2.1 Cable to condensate source or external
alarm
Warning
Before starting work on Conlift, switch off
the power supply and make sure that it
cannot be accidentally switched on.
Work on electric systems and components
must only be carried out by an authorised
electrician.
Conlift has a safety overflow switch which can be
connected to the condensate source or to an
external alarm system. The switch is connected to an
1.7 metre alarm cable with free cable end.
Alarm systems with a control voltage of 250 VAC, 2.5
A, can be used.
On delivery, the alarm cable is connected to
terminals COM1 (brown) and NO4 (blue) of the
safety overflow switch. See fig. 1.
Blue
Brown
Fig. 1 Wiring diagram
The alarm cable can be connected in two ways,
depending on application:
• Shutdown of condensate source
The safety overflow switch can be connected to a
Class-II low-voltage circuit.
To enable shutdown of the condensate source,
the COM1 and NO4 terminals of the safety
overflow switch must be connected in series with
the low-voltage thermostat circuit of the
condensate source.
• External alarm system
The COM1 and NC2 terminals can be used to
close a low-voltage alarm circuit.
To activate an alarm, the COM1 and NC2
terminals of the safety overflow switch must be
connected in series with the low-voltage alarm
circuit.
2
3 1
1 = COM1
2 = NC2
3 = NO4