Videotec EXH Bedienungsanleitung Seite 12

6.2 Installation
The installer must not use devices
h
that generate dangerous radiation.
The back flange of the housing has 12 stainless
steel A2-type M6 screws. It also has 3 screws
at 120° intervals to facilitate extraction of the
flange. When the M6-thread screws have been
unscrewed from the flange, turning the 3 screws
at 120° (one turn per screw at a time, in turn)
will make it easier to extract the flange.
6.2.1 Installing the camera
To install the camera, you have to extract the flange
closing the housing, which also supports the plate
to which the camera will be attached, and the
related terminal board. This plate is supported on
two guides attached to the housing; when the
flange is removed, the plate slides along the guides,
so that it is easy to fit and connect the camera and
its accessories. During installation, we strongly
recommend insulating the camera from the support
plate using the supplied insulating spacers.
(To identify the parts, see the illustration below
and the attached electrical diagram).
Before closing the flange, after installing the
camera, make sure that the 4 earth wires
have been connected (back cover, front cover,
housing body, terminal board) and make sure
they have been placed at the same potential.
We recommend a torque wrench setting of
12.5Nm for the 12 screws closing the flange.
The appropriate joint is used to install the
housing. It has 4xM6 holes at 90° intervals,
and, where appropriate, a bracket which
is attached using the 4xM8 holes.
Back cover
gasket
Flange
Earth
connection
Fig. 04
10
Terminal board
Fixing plate
6.2.2 Changing the back cover gasket
If the back cover gasket of the housing
is worn it should be replaced using the
supplied spare or, failing that, using only and
exclusively a VIDEOTEC original part.
When changing the gasket, take care to make
sure it is properly inserted in its seating.
Reconnect the earth wires that had been
disconnected in order to extract the flange.
Close the flange properly, using a torque wrench
setting of 12.5Nm when tightening the 12 screws.
6.3 Operational test
h Before proceeding with the following
operations, make sure that the
mains voltage is correct.
To connect the housing to the main power
supply use cables designed for use in potentially
explosive atmospheres, and proceed as follows:
• Connect the cables to the housing
using the supplied cable glands;
• Make the connections with the camera and lens;
• Power the unit;
• Carry out the operational tests.