Triple IR Flame Detectors
FV400
Fixing Instructions Doc. version 2
5/20
Fitting the EMC clamp
1 Remove about 120 mm of outer sleeving at the
end of the cable.
2 Fold the cable drain wire back over the end of
the cable and shorten the length to 20 mm.
3 Wrap the copper tape around the end of the
cable over the drain wire.
4 Pass the cable through the cable gland and the
clamp with the copper tape resting over the
clamp.
5 Slide the cable backwards to position wrapped
drain wire in the clamp.
6 Fit the loose part of the EMC clamp over the
cable.
7 Tighten the cable gland and then, tighten the
screws on the EMC clamp (See Fig. 5).
Cable Entry Sealing
Only cable glands incorporating an inner cable seal
should be used. In exposed outdoor areas, it is
recommended that a shroud be fitted over the
cable glands.
In applications where the ambient temperature is
expected to be 40
o
C or higher, cable glands with
the inner seal must be used and, when fitted, the
shroud must be made of CR rubber.
The unused cable gland entries must be fitted
with a suitable stopping plug. The recommended
types are those with a mushroom head and an
integral ‘O-ring’.
The glands/stopping plugs should be hand-tight-
ened with the addition of, at least, a further 1/4
turn applied by spanner or other suitable tool.
If it is not feasible to use a nylon gland washer or
where an anti-seizing union is required, the follow-
ing alternative methods may be used:
The thread of cable glands/stopping plugs may
be sealed using PTFE tape or other jointing
putty or mastic.
For flameproof applications, the threads of the
flameproof glands/stopping plugs may be
sealed using any non-setting grease or putty as
described in BS EN 60079-14: 1997.
PBC/D loaded mineral oil based grease is a suita-
ble compound and is available in 100g tubes
(Stock Code No. 517.001.250).
Enclosure Sealing
Fig. 5: EMC Clamp Fitted
Cable
Gland
EMC
Clamp
CAUTION
Cable glands and stopping plugs MUST
be certified to the required standard.
They must be properly sealed to prevent
the ingress of moisture.
Cable glands MUST be sealed to the
detector housing by fitting a sealing
washer between their flange and the
housing.
NOTICE
The Front Cover must be fitted with the
O-ring before fitting to the back box to
ensure that the enclosure is properly
sealed against environment and dust.
