6
Installation
4
Installation
4.1 Electrical connection
Unscrew and remove the cover of the relay box.
Install the wiring of the mains power and the backing pump according to the
technical data and the following illustrations.
Close the relay box.
DANGER
Voltage-bearing elements
Danger to life from electric shock as a result of improper installation.
Electrical connection may be carried out only by trained and authorised electricians.
Ensure the system is adequately earthed.
Establish an adequate fuse protection on customer side (depending on the model).
Fig. 3:
Backing pump relay box, 5 A, internal view
1
Casing / Relay box
1a
Control lead
2
Cable fitting PG 11
3
Cable fitting PG 9
4
Cable fitting PG 7
Fig. 4:
Backing pump relay box, 20 A, internal view
1
Casing / Relay box
1a
Control lead
2
Cable fitting PG 11
3
Cable fitting PG 9
4
Cable fitting PG 7
L
N
1
3
2
1
a
4
PE
PE
N
L1
i
nsul
a
te!
B
a
ck
i
ng
pump
M
ai
ns
i
nput
n.c. bn
bl
sw
N
2
N
PE
PE
1
L
L1
3
4
1
a
B
a
ck
i
ng pump
M
ai
ns
i
nput
bl
sw
bn
n.c.
i
nsul
a
te!
