Videotec NXW User manual

EN English - Instructions manual
IT Italiano - Manuale di istruzioni
FR Français - Manuel d’instructions
DE Deutsch - Bedienungslanleitung
RU
 - Руководство по эксплуатации
NXW
Special stainless steel liquid-cooled housing

EN English - Instructions manual
ENGLISHENGLISH
NXW
Special stainless steel liquid-cooled housing

Contents
ENGLISH
1 About this manual........................................................................................................ 3
1.1 Typographical conventions ................................................................................................................................ 3
2 Notes on copyright and information on trademarks................................................. 3
3 Safety rules ................................................................................................................... 3
4 Identication ................................................................................................................ 4
4.1 Product description and type designation................................................................................................... 4
4.2 Product markings................................................................................................................................................... 4
5 Preparing the product for use..................................................................................... 4
5.1 Contents and unpacking ..................................................................................................................................... 4
5.2 Safely disposing of packaging material ......................................................................................................... 4
6 Assembling and installing ........................................................................................... 5
6.1 Installation ................................................................................................................................................................ 5
6.1.1 Preparing the housing.......................................................................................................................................................... 5
6.1.2 Opening the housing............................................................................................................................................................ 5
6.1.3 Installing the camera ............................................................................................................................................................ 6
6.1.4 Cooling circuit ......................................................................................................................................................................... 6
6.1.5 Circuit for front ange with air barrier............................................................................................................................ 7
6.1.6 Installing the camera power supply kit.......................................................................................................................... 7
6.1.7 Installing the IR radiation lter glass kit......................................................................................................................... 8
7 Maintaining and cleaning............................................................................................ 8
7.1 Window cleaning.................................................................................................................................................... 8
8 Disposal of waste materials......................................................................................... 8
9 Technical data ............................................................................................................... 9
9.1 General....................................................................................................................................................................... 9
9.2 Mechanical................................................................................................................................................................ 9
9.3 Electrical .................................................................................................................................................................... 9
9.4 Environment............................................................................................................................................................. 9
9.5 Compliance to ......................................................................................................................................................... 9
10 Technical drawings................................................................................................... 10

EN - English - Instructions manual
3
1 About this manual
Before installing and using this unit,
please read this manual carefully. Be sure
to keep it handy for later reference.
1.1 Typographical conventions
g DANGER!
High level hazard.
Risk of electric shock. Disconnect the
power supply before proceeding with any
operation, unless indicated otherwise.
h WARNING!
Medium level hazard.
This operation is very important for
the system to function properly. Please
read the procedure described very
carefully and carry it out as instructed.
j INFO
Description of system specications.
We recommend reading this part
carefully in order to understand
the subsequent stages.
2 Notes on copyright and
information on trademarks
The quoted names of products or companies
are trademarks or registered trademarks.
3 Safety rules
h The manufacturer declines all responsibility
for any damage caused by an improper use
of the appliances mentioned in this manual.
Furthermore, the manufacturer reserves
the right to modify its contents without
any prior notice. The documentation
contained in this manual has been
collected with great care, the manufacturer,
however, cannot take any liability for
its use. The same thing can be said for
any person or company involved in the
creation and production of this manual.
• The device must be installed only and
exclusively by qualied technical personnel.
• Before any technical work on the appliance,
disconnect the power supply.
• Do not use power supply cables
that seem worn or old.
• Never, under any circumstances, make any
changes or connections that are not shown in
this handbook: improper use of the appliance
can cause serious hazards, risking the safety
of personnel and of the installation.
• Use only original spare parts. Not original
spare parts could cause re, electrical
discharge or other hazards.
• Before proceeding with installation check the
supplied material to make sure it corresponds
to the order specication by examining the
identication labels ("4.2 Product markings", page 4).

EN - English - Instructions manual
4
5 Preparing the
product for use
h Any change that is not expressly
approved by the manufacturer
will invalidate the guarantee.
5.1 Contents and unpacking
When the product is delivered, make sure that
the package is intact and that there are no
signs that it has been dropped or scratched.
If there are obvious signs of damage,
contact the supplier immediately.
Keep the packaging in case you need
to send the product for repairs.
Check the contents to make sure they correspond
with the list of materials as below:
• NXW housing
• Housing equipment:
• Allen wrench
• Spacers
• Screws and washers
• Screws for camera
• Instructions manual
5.2 Safely disposing of
packaging material
The packaging material can all be recycled.
The installer technician will be responsible for
separating the material for disposal, and in
any case for compliance with the legislation
in force where the device is to be used.
Bear in mind that if the material has to be returned
due to a fault, using the original packaging
for its transport is strongly recommended.
4 Identification
4.1 Product description
and type designation
The solid construction of this housing makes
it suitable for heavy duty applications, such
as the surveillance of ovens, foundries and
other high temperature environments.
The NXW housing is entirely constructed from
electropolished stainless steel and consists of a body
with a double chamber for the circulation of a cooling
liquid or air. The NXW is enclosed by two thick anges
at either end and allows cables to pass through by
means of two PG13.5 cable glands on the back ange.
The front ange can be equipped with tempered
glass, IR glass or Vicor glass for higher temperature.
A special version is available with IR-proof glass.
Two 1/2”GAS connectors allow for the
cooling liquid inow/outow.
The NXW is equipped with a ange designed to
create an air barrier in front of the glass. This prevents
the formation of dust deposits and attenuates
the heat of the glass itself. With the supplied air
barrier, the NXFIGRU lter group is recommended,
which puries the air drawn from a compressor.
4.2 Product markings
See the label attached to the outside of the package.

EN - English - Instructions manual
5
Position the front ange 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 ange 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 conguration
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 ange of the
housing by unscrewing the four screws
using the allen wrench supplied.
Fig. 01
Position the glass in its seating on the ange, after
correctly inserting the O-rings in the order as shown.
Fig. 02
For IR radiation lter glass see the specic
assembly instructions given later.

EN - English - Instructions manual
6
6.1.4 Cooling circuit
This section describes how to connect the
housing to the water cooling circuit and gives
the results of experimental data to determine
the dimensions of the latter. The housing is
equipped with 1/2”Gas, threaded, cooling
water inlet and outlet connectors with.
Use the connector on the housing body near the
front (01) as the cooling water inlet and the connector
near the back (02) as the cooling water outlet.
This is only a general indication since the direction
from which the heat source originates and
installation constraints may make it necessary to
adapt the position of the water connectors and
the choice of input and output according to the
specic installation. This is possible because the
housing body can be rotated with respect to the
support base by adjusting the locking ties (03).
01
02 03
OUT water 1/2“Gas
IN water 1/2”Gas
Fig. 07
The following experimental data give the water
ow rate required to maintain a temperature
below 45°C inside the housing with an external
temperature Tmax =400 °C and refer to the
use of water as cooling liquid with an input
temperature to the housing of 20°C.
T environment °C WATER FLOW
RATE L/MIN
T inside
housing °C
200 2 32
300 2.2 41
400 6.5 44
Tab. 01
6.1.3 Installing the camera
This section describes how to install
the camera inside the housing.
Open the housing following the instructions
given above (Fig. 04, page 5).
Attach the camera to the internal slide with the 1/4”W
screw using the insulating bush. If necessary use the
spacers supplied and the appropriate 1/4”W screws
so as to position the camera and lens correctly.
Fig. 05
Make the correct electrical connections for
the camera and lens, passing the cables
through the cable glands. Make sure the
latter are rmly locked in place.
Close the housing by proceeding in the reverse
order to that described above (Fig. 04, page 5). Make
sure the sealing ring on the rear ange is correctly
inserted in its seating so as not to damage it.
Attach the housing to the bracket if this
has not been assembled already.
Fig. 06

EN - English - Instructions manual
7
6.1.6 Installing the camera
power supply kit
This section describes how to install the camera
power supply kit inside the housing. It is possible to
install a number of dierent types of power supply.
The input voltage may be 230Vac or 115Vac while
the output voltage may be 12Vdc or 24Vac, 400mA.
Open the housing following the instructions
given previously (Fig. 04, page 5).
Position the power supply to match the
attachment holes provided on the inner
side of the rear ange of the housing.
Attach the power supply to the rear
plate of the housing using the screws
supplied with the power supply kit.
Fig. 09
Make the power supply-camera
electrical connections.
Close the housing, proceeding in the reverse order
to that described above, making sure the sealing
ring on the rear ange is correctly inserted in its
seating so as not to damage it (Fig. 04, page 5).
6.1.5 Circuit for front
ange with air barrier
This section describes how to connect the housing’s
front ange with air barrier. The air barrier ange
is tted with a 1/4”Gas threaded connector and
has a 1/2”Gas to 1/4”Gas reduction adapter.
This connector must be connected with the
compressed air circuit supplied by a compressor.
Fig. 08 IN air 1/4“Gas – 1/2“Gas.
We recommend using the optional lter unit
for cleaning the compressed air (NXFIGRU). The
maximum air pressure to be supplied to the air
barrier is 2.5 bar. The following experimental
data give the eective air consumption, for
calculating the size of the compressor:
COMPRESSED AIR
PRESSURE BAR
AIR BARRIER
CONSUMPTION M3/H
1 7
1.5 10
2 12
2.5 14
Tab. 02
g Take care to use the correct camera power
supply kit, according to requirements
(available power supply and required
power supply output voltage). To assemble
the power supply option it is not necessary
to remove any pre-installed component.

EN - English - Instructions manual
8
7 Maintaining and cleaning
7.1 Window cleaning
Surface dirt should be rinsed away with water and
then the window cleaned with a neutral soap diluted
with water, or specic products for spectacle lens
cleaning. These should be applied with a soft cloth.
h Avoid ethyl alcohol, solvents,hydrogenated
hydrocarbide, strong acid and alkali.
Such products may irreparably
damage the surface.
8 Disposal of waste
materials
n This symbol mark and recycle system
are applied only to EU countries
and not applied to the countries
in the other area of the world.
Your product is designed and manufactured
with high quality materials and components
which can be recycled and reused.
This symbol means that electrical and electronic
equipment, at their end-of-life, should be disposed
of separately from your household waste.
Please dispose of this equipment at your local
Community waste collection or Recycling centre.
In the European Union there are separate collection
systems for used electrical and electronic products.
6.1.7 Installing the IR
radiation lter glass kit
This section describes how to install the IR
radiation lter glass. The kit consists of a pair
of IR lter glasses and a special front ange
with air barrier that is dierent from the
standard one, which should be replaced.
Dismantle the front ange of the
housing by unscrewing the 4 screws
using the allen wrench supplied.
Position the glass pair in the appropriate Tmax
seating on the new ange supplied with the
kit, after correctly inserting the O-ring seals.
Mark for IRR glasses
Fig. 10
h Make sure the IR lter glasses face
the right direction. The glasses have a
reference mark showing the side that
should face towards the outside of the
housing i.e. towards the direction from
which the IR radiation will arrive.
Position the front ange now tted with the
IR lter glasses on the housing, making sure
the sealing rings are correctly inserted in their
seating so as not to damage them. Tighten the
4 screws using the allen wrench supplied.
The maximum working temperature of
these IR lter glasses is Tmax = 300°C.
The percentage of IR radiation ltered
by these IR lter glasses is 80%.