|
| Ratings: |
2 to 6 hrs
Fire-Ratings. SIRIM or SISIR Labelled.
|
| General: |
Face
fixed or soffit mounted fire rated steel roller shutter of galvanised steel construction,
complete with fusible link and governor as standard. Heavy duty shutters may be manually
operated or motorised but are supplied without fusible links.
|
| Curtain: |
The
shutter curtain is formed from interlocking galvanised steel slats of "C" or
"F" profile, of material thickness 0.8mm, 1.0mm, 1.2mm or 1.6mm, depending on
shutter size and fire rating. Both ends of alternate slats shall have a malleable metal
end-lock. Stainless steel slats are optional.
|
| Bottom Bar: |
The
bottom bar is constructed of right-angled steel bars, weighted where necessary, fastened
to the bottom slat of the curtain. Safety-edge, stopping operation on contract, for motor
operated shutters is available as option.
|
| Brackets: |
Brackets
shall be fabricated of cast-iron or steel and designed to close the ends of the roller
shaft housing and form an end closure support for the hood.
|
| Hood: |
Hood
shall be constructed of not less than 0.8mm galvanised steel and reinforced with steel
angles where necessary.
|
| Finish: |
Finish
of above components as follows. All exposed welds to be ground smooth and puttied where
necessary. One coat of grey primer to be shop applied. Finish coat is not recommended due
to the high possibility of damage during transportation and installation. Prepainted steel
available in standard colours as an option.
|
| Shaft: |
Roller
shaft to be constructed of steel pipe of proper diameter and thickness for the size of the
curtain and the fire rating. Deflection limit 2.5mm/m span. End of roller closed with cast
iron plugs, machined to fit pipe. Grease-scaled or self-lubricating graphite bearings are
used for rotating members.
|
| Operation: |
The
fire rated roller shutter shall be manually operated or operated by electrical power and
manual handchain. For motorised shutters, a 3-phase power point with isolator is to be
supplied by the client.
|
| Electrical Operaion (optional) : |
Furnished
complete with electric motor, reduction gears, brackets, push button control and limit
switches as necessary for the normal operation of the shutter. Additional limit switches
and position sensors available as options. A manual operator crank gear or chain gear
mechanism shall be provided to permit manual operation of the shutter in case of electric
power failure. The motor provided will have sufficient torque output to operate the
curtain at a travel speed of not less than 3m per minute. Unless otherwise stated, motors
will require 3 phase 415 volts alternating current power supply. Power supply and points
to be provided by the client.
|
| Remote Link (Optional) : |
The
fusible link can be linked to a remote Fire Control Panel / System with DC 24V supply for
auto-closing as an option.
|
