| STANDARD SPECIFICATION Curtain
Specially
coated grey fiberglass material with a class 1 surface spread
of flame rating
and able to withstand temperatures
of 600°C. The curtain thickness is approximately 0.7mm
and the weight 635gms/m².
Bottom Rail
A triangular section steel bottom rail is attached to the
curtain and is designed to stop at ceiling level or into
a recess in the box when raised.
Roller
The curtain coils on to a tubular steel roller mounted on
endplate bearings.
Box
The roller and coiled-up curtain are housed in a 2mm
thick galvanised head box, which is prepared for fixing to
the
building structure.
OPERATION
The curtains are electrically operated and are available
with two different types of drive dependent on size of curtain
and design criteria of the building.
1 24 volt DC tubular motor.
2 240 volt 1 phase external drive motor.
In the case of the tubular motor, an incoming 240 volt single
phase supply terminating in a 13 amp fused spur is required
(by others) within one metre of the motor position.
Both types of motor are supplied with a control panel prepared
for an incoming 24 volt alarm or fire signal. The panel is
normally mounted at high level adjacent to the motor and
low level control is by means of key switch.
Zoned Operation
The control panel can be arranged such that the one panel
will operate up to six curtains to allow simultaneous operation
of curtains within the same smoke compartment.
Failsafe Operation
In the event of power failure, both types of drive will
failsafe to the down position. The tubular motor closes the
curtain electrically by means of batteries within the control
panel and the external drive allows mechanical closure by
means of an auto reset magnet/speed governor unit.
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