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4
Installation
Follow the safety instructions, see "Safety", page 26. For an overview of the printed circuit board connections, see "Connec-
tion diagrams", page 38 .
4.1
Installing the control unit
WARNING
Disconnect system from energy sources! Make sure that cables and electrical components are disconnected from
the power supply during work.
The control unit can only be opened if the main switch is in the OFF position.
Undo screws in the housing cover and lift up housing cover.
Mount housing in place provided; to do so, use all fixing options of the housing.
Take the ambient conditions into account.
4.2
ATEX pump connection with equipotential bonding
The following additional requirements must be taken into account for the electrical installation so that the pumps can be
operated in a potentially explosive atmosphere:
The minimum cross-section of the mains cables to the control unit must be 6 mm
depending on which cross-section is larger (see "Technical data", page 30).
The equipotential bonding (to EN 60079-14) is to be executed as an earthing cable at the submersible pumps with at least
4 mm
cross-section. The earthing cable is routed, not self-tripping, between the earthing screw and the screw retainer on
2
the terminal.
To do this, proceed as follows:
WARNUNG
Note and follow the operating instructions and/or leaflet of the corresponding pump
Before connecting the pump, check whether the motor protection switch of the control unit is suitable for the power con-
sumption of the pump(s) (see type plate).
This system's ATEX pumps can have a 6 or 9-wire cable. Double assignment of the phases in the control unit is provided
for 9-wire cables.
4.3
Connect mains cable 400V
► Lay the mains cable through the left-hand cable passage up to the connection terminals and the main switch.
► Establish the connections in accordance with the connection diagram (in the housing cover of the control unit).
► Tighten the cable gland.
Connection overview for the mains cable
Source
Connection
Cables
Mains
5-wire
532-010
Type of conductor
Protective earth
Neutral
Phase
Phase
Phase
Installation and operating manual
or according to the required fusing,
2
Label
Connection
name
Yellow-green
PE
Blue
N
L1
T1
L2
T2
L3
T3
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