14
2021-07-15 / V1.0
Installation
Contactors C320K/C320S – Installation and Maintenance Manual
Ventilation requirements
X
Ensure sufficient ventilation in the installation area,
especially when disconnecting heavy loads. This
allows the plasma to be dissipated more quickly to
reduce the risk of flash-overs and corrosion.
Safety
X
Installation must be performed by qualified
trained personnel.
ATTENTION
When installing, ensure that no dirt can get into the
contactor as a result of surrounding building activi-
ties.
ATTENTION
Detent-edged rings and detent-edged washers have
a limited life time. After screws secured with detent-
edged rings or detent-edged washers have been
undone three times, the rings or washers must be
replaced by new ones.
X
Record the frequency of undoing of the screws
in the work log.
X
Replace detent-edged rings or detent-edged
washers with new ones after the screws have
been undone three times.
Tools required
X
Socket spanner set, hexagon nuts
X
Open-ended spanner set
X
Torque wrench
X
Hex key set
Installing the contactor
X
Ensure that the contact surfaces on the mounting
plate (3) are free from dirt and other contamina-
tion (e.g. metal chips).
X
Position the contactor (1) on the mounting plate
(3) which is provided with mounting holes.
ATTENTION
X
The mounting screws M5 (2) must be equipped
with washers (resting on the device). Installa-
tion without washers is not permitted!
X
Secure the contactor to the mounting flange with
4 mounting screws M5 (2) on the mounting plate
(3).
-
In designs with the mounting holes imple-
mented as threaded holes, screw the mounting
screws into the holes directly, not forgetting the
washers.
-
In designs with through holes, fit the mounting
screws and washers and tighten the screws us-
ing suitable screw locking elements and nuts.
X
Thighten the mounting screws (2) to a torque of
2.3 ... 2.7 Nm (screws of strength class 4.6).
1
3
2
4 x M5
2.3...2.7 Nm
Fig. 7:
C320K: Installing the contactor on the mounting plate
1
3
2
4 x M5
2.3...2.7 Nm
Fig. 8:
C320S: Installing the contactor on the mounting plate
