Videotec NXW - Manual (Page 7)

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nstruc
tions manual
5
Position the front flange of the housing on the body,
making sure that the sealing rings are correctly
inserted in their seating so as not to damage them.
Tighten the 4 screws using the allen wrench supplied.
Fig. 03
6.1.2 Opening the housing
To open the housing, unscrew the 4 screws on the
back flange using the allen wrench supplied.
Slide out the rear cover plate of the housing, taking
care to leave the sealing washer in its seating.
Fig. 04
It will then be easy to gain access to the inside
of the housing without having to dismantle it
from the support bracket if already assembled.
6 Assembling
and installing
h Only specialised personnel should be
allowed to assemble and install the device.
h In the 230Vac powered configuration
it is necessary to insert a 1 0 unipolar
main switch (open contact distance
d>3 mm) upstream on the power
line. This switch should be used to
disconnect the power supply before
carrying out any maintenance operation
or before opening the housing.
6.1 Installation
6.1.1 Preparing the housing
Dismantle the front flange of the
housing by unscrewing the four screws
using the allen wrench supplied.
Fig. 01
Position the glass in its seating on the flange, after
correctly inserting the O-rings in the order as shown.
Fig. 02
For IR radiation filter glass see the specific
assembly instructions given later.