Wiring Diagram - Grundfos Unilift AP12 Montage- Und Betriebsanleitung

7. Functional sketch
The control box must be connected to an external
mains switch. If the pump is not installed close to the
mains switch, this must be of a lockable type.
Block diagram for level control:
Closed

8. Wiring diagram

The electrical connection should be carried out in
accordance with local regulations.
Before starting work on the control box, make sure that the electricity supply has been switched off
and that it cannot be accidentally switched on.
As a precaution, the control box must be connected to a socket with earth connection. The perma-
nent installation must be fitted with an earth leakage circuit breaker (ELCB) with a tripping current
< 30 mA.
Key diagram for level control box:
Control box
Open
PE L1 L2 L3
3
1 5
L1 L2 L3
PE
2 4 6
T1 T2 T3
T1 T2
T3
PE
Check that the mains voltage and frequency stated
on the pump nameplate are suitable for the electric-
ity supply on which it will be used.
Supply
Pump
N
13
KM1
14
95
O/R
96
A2
KM1 H1
A1
KM 1/5
Subject to alterations.
5