 Technical Data
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1. Engineering staff undertaking work should
be suitabily trained for hazardous area working.
Before commencing work ensure where necessary, permits
to work have been obtained and isolations have taken
place. The work area should be tested for gas free atmosphere
and where possible be permanently monitored for the
duration of the work period.
2. Installation
Installation must be in accordance with BS EN 60079
and current wiring regulations of the country where
the detector will be installed.
The detector head must be fixed into position with the
sensor facing downwards using the external fixing lugs
provided for this purpose. Under no circumstances must
the enclosure be supported by way of any cable entry
device.
The gasket must be secured between the body and the
cover.
It is important that the cover is securely fitted to
the body of the enclosure.
All cover fixing screws must be tightened down to 3.5Nm.
3. Cable entry devices
These must be selected in accordance with the certification
of the detector head and classification of the area.
4. "T" Ratings
The detector head may be approved for installation in
various ambient temperatures.
The marking on the label on the cover and sensor body
must comply with the ambient temperature into
which the enclosure is being installed, see certification
section.
5. Conductor installation
All conductors must be fully tightened down within the
terminals. Conductor tightening screws may be below
the surface of the terminal, it is important that the
correct sized screwdriver is used. An oversized screwdriver
will break the insulation around the terminal.
6. Earthing
When the enclosure is fitted with an earth continuity
plate and/or Internal/External earth stud, a suitable
ring type terminal lug must be used to secure the earth
conductor.
7. Surrounding Area Conditions
The junction box has been manufactured from glass-reinforced
polyester plastic or cast iron and is fitted with stainless
steel cover fixing screws, neoprene or silicone 'O'
ring, the F1 sensor is made of stainless steel. The
performance of the detector head materials should be
considered with respect to contact with aggressive substances
with which the enclosure may come into contact.
The enclosure is intended for use under normal industrial
conditions and must not be installed in an area where
extreme vibration may occur.
8. Ingress Protection
The electical enclosure has been tested to IP66 and
with the cover fully tightened down and the use of suitable
cable entry devices will maintain this protection under
normal working conditions, however a minimum protection
of IP54 must be achieved.
9. Misuse
Changes to the componets fitted within this enclosure
are not permitted, please refer to GDS for advice.
Each enclosure carries a unique serial number, which
is recorded within our system listing all parts and
accessories included at time of manufacture.
10. Tools
Allen key, 4mm (9000J), 5mm (3000C) across flats for
cover fixing screws.
11. Maintenance
Periodic inspection of this enclosure is necessary,
refer to EN 60079-17 clause 4.3 for guidance.
Particular attention should be paid to; tightening of
terminal screws, 'O' ring, cover fixing screws, earth
assemblies and grub screws (F1 sensor), if any are lost
or require replacement, contact GDS for the appropriate
part. Failure to use approved replacement parts will
very likely invalidate the certification.
12. Caution
The installation of this product must be carried
out by suitably trained and qualified personnel only.
GDS Technologies Ltd, will not accept any responsibility
for any damage, injury or any form of loss due to products
not being installed or used in strict accordance with
these instruction. Relevant Installation Standard
Code of Installation must be in accordance with BS EN
60079 and current wiring regulations of the country
where the enclosure will be installed. If in
doubt, please contact us.
CABLE GLANDS
1. All glands should be selected in accordance with
all relevant Standards and Codes of Practice and in
accordance with the marking of the certification of
the detector head.
2. Ensure that the gland is certified to the same method
of protection as the equipment to which it is to be
installed.
3. Ensure that the correct threadform and size is selected
for the cable and/or entry hole of the enclosure.
4. Ensure that surrounding conditions do not exceed
the Operating Tempratures stated on the gland.
5. Ensure that the gland can maintain the same Ingress
Protection levels as the equipment to which it is to
be installed.
GLAND INSTALLATION GUIDE
1. All glands should be installed in accordance with
all relevant Installation and Codes of Practice.
BS EN 60079-14: 1997. Electrical Installations in hazardous
areas (other than mines).
2. Installation should only be carried out by an engineer
trained in cable gland installation.
3. Under no circumstances should installation be carried
out under live conditions.
4. The installer should ensure that no damage occurs
to any thread or form of seal during installation. Where
a component is plated care should be taken to prevent
damage or chipping.
5. Maintaining IP Rating - In order to maintain the
IP Rating of a component, full thread engagement must
be attained. The surface of the enclosure should also
be clean and free from dust or moisture before assembly.
In order to maintain IP 66-67-68 the installer must
ensure that the sealing washer is in the correct position.
6. If a serrated washer is used it should not be installed
in such a way that it may impair any IP Rating.
7. Maintenance - all glands should be checked during
the routine maintenance of the enclosure.
F1 GAS SENSOR INSTALLATION
See installation of equipment in hazardous (zoned) locations.
The sensor must only be fitted to an approved junction
box (GDS 9000JB, 3000JB, XDI) and installed in an appropriate
environment for its certification (see installation
equipment in hazardous (zoned) locations).
The sensor housing may contain a hot wire filament,
for this reason power should be removed from the device
before work of any type is carried out. After a minimum
of three minutes the end cap my be removed by
undoing the grub screw (1.5mm allen key) and turning
the sensor end cap anti-clockwise.
INSERT REPLACEMENT
Only GDS replacement inserts should be fitted; use of
other components will invalidate the certification.
Extraction and insertion of replacement inserts may
be achieved by using long nosed serrated pliers (RS
part no. 536-442).
The sensor end cap must be fully screwed into the body
and lock srew (grub screw) fully tightened.
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