Videotec EXPT - Manual (Page 8)

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nstruc
tions manual
6
• Before powering the device install an overload
protection device in the electrical equipment for
the building.
• The user must not install any apparatus inside the
device if it generates dangerous radiation.
• For technical services, consult only and exclusively
authorised technicians.
• Keep this handbook carefully; it must be available
for consultation on the installation site.
• Never, under any circumstances, make any
changes or connections that are not shown in this
handbook: improper use of the device can cause
serious hazards, risking the safety of personnel and
of the system.
• Use only VIDEOTEC original spare parts.
• Before proceeding with installation check the
supplied material to make sure it corresponds
to the order specification by examining the
identification labels ("4.2 Product markings", page 8).
4 Identification
4.1 Product description and type
designation
The EXPT series explosion-proof pan & tilt (P&T)
devices have been designed to allow movement, on
both a horizontal and a vertical plane, of cameras
operating in industrial environments in which there
may be an explosive atmosphere due to gas, vapours,
mists, or air or powder mixtures.
EXPT pan & tilt devices, supplied complete with
camera housing, are made of a solid, cast Anticorodal
aluminium alloy from the AlSi7Mg EN AB-42000
group, the exact chemical composition of which is
defined in the UNI EN 1706 standard.
Depending on the model, all parts are powder-
painted and oven-cured or treated with special
coatings giving excellent resistant to UV light, to salt
spray and to atmospheric pollutants.
The P&T basically consists of a base, a central body
and a third part designed as a housing for the
camera. The base contains the connection for the
control cable (multipolar cabling with 29 conductors
and 2 coaxial cables); the central body contains the
motors for horizontal and vertical movements; the
third component comprises the camera housing.
• This device is remotely controlled and may change
position at any time. It should be installed so that
no one can be hit by moving parts. It should be
installed so that moving parts cannot hit other
objects and create hazardous situations.
• Choose an installation site that is strong enough
to sustain the weight of the device, also bearing
in mind particular environmental aspects, such as
exposure to strong winds.
• We strongly recommend using only approved
brackets and accessories during installation.
• Make sure that the device is firmly anchored so
that it cannot become detached.
• Since the user is responsible for choosing the
surface to which the device is to be anchored,
we do not supply screws for attaching the device
firmly to the particular surface. The installer is
responsible for choosing screws suitable for the
specific purpose on hand.
• The device must be installed and maintained only
and exclusively by qualified technical personnel.
• Use appropriate tools for the purpose. The
particular nature of the site where the device is to
be installed may mean special tools are required
for installation.
• Make sure that the installation complies with local
regulations and specifications.
• This device must be installed out of the reach of
the user or of anyone who might happen to touch
it by chance.
• Before doing any technical work on the device,
disconnect the power supply.
• Do not use power supply cables that seem worn
or old.
• Only qualified technical personnel should be
allowed to open the device, and they should work
in a non-explosive atmosphere. Tampering with
the device will invalidate the guarantee.
• Do not allow children or untrained people to use
the device.
• The device can only be considered to be switched
off when the power supply has been disconnected
and the connection cables to other devices have
been removed.