| STANDARD SPECIFICATION Curtain
Shutter
curtains are constructed from continuously interlocked
76mm curved section steel laths which are securely held
in
place by end locks. Lath thicknesses vary from 0.7mm to
1.2mm dependent upon opening size. Bottom rails are galvanised
and roll-formed into a Tee section. Guides
Channel section galvanised mild
steel guides with slotted fixings for expansion in a fire
are fixed to the jambs with
continuous steel angles. Endplates
Prime painted mild steel of
appropriate thickness relative to door size. Finish
Fireroll E240 is supplied with
the majority of parts galvanised as standard. Where non-galvanised
parts are utilised these
are finished with one coat of primer paint.
Electrical Operation
Suitable for all sizes
of shutters, the Speedsafe drive unit has a 240 volt 1 phase
50hz geared induction motor with
an electromagnetic brake, limit switches, thermal release
unit and a high level starter panel. The design provides
a fail-safe system which will close the shutter automatically
in the event of a fire situation and power loss. A controlled
descent of 100mm per second is an inbuilt safety feature.
Manual operation in the event of a power loss is achieved
by releasing a pull cord to close the shutter under controlled
descent and a hand chain to open. Each fire shutter is individually
operated from a control station, incorporating three push
buttons positioned adjacent to the shutter guide. Larger
shutters are provided with 415 volt 3 phase motors.
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