Kessel Aqualift Comfort 400V Mono Einbau- Und Betriebsanleitung Seite 52

4 Installation
Follow the safety instructions, see "Safety", page 44. For an
overview of the printed board connections, see "Connection
diagrams", page 61 .
4.1 Installing the control unit
WARNING
Disconnect system from energy sources! Make sure
that cables and electrical components are discon-
nected 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:
52 / 124
The minimum cross-section of the mains cables to the
control unit must be 6 mm
fusing, depending on which cross-section is larger (see
"Technical data", page 49).
The equipotential bonding (to EN 60079-14) is to be exe-
cuted as an earthing cable at the submersible pumps
with at least 4 mm
routed, not self-tripping, between the earthing screw and
the screw retainer on the terminal.
To do this, proceed as follows:
Before connecting the pump, check whether the motor
protection switch of the control unit is suitable for the
power consumption 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.
Installation and operating instructions
or according to the required
2
cross-section. The earthing cable is
2
WARNUNG
Note and follow the operating instructions and/or
leaflet of the corresponding pump
010-532_02_SON