Electrical connection
7
4
Electrical connection
Unscrew and remove the cover of the relay box.
Pay attention to grounding cables!
Install the power supply and the backing pump connection, according to their technical
data to the terminals of the relay box.
– L/L1: Conductor
– N: Neutral
– PE: Protective earth
Secure cables with cable fittings.
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, single phase, 7 A
1 Casing
1.1 Casing
cover
1a
Control lead for electronic drive unit
1b
Mains connection output, backing pump
1c
Mains connection input
3 Connection
terminal
4 Semiconductor
relay
6 Cable
fitting
M16
7 Cable
fitting
M12
9 Fuse
11 Earthing
cable
L/L1 Conductor (black)
N Neutral
(blue)
PE Protective earth (yellow/green)
L N PE
L1 N PE
1
1a
1c
1b
4
3
6
6
7
1.1
11
9
+ -
Shield
AC in
AC out
