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Roller Curtain
The shutter curtain is constructed from cold rolled galvanised steel laths - 76mm with a minimum thickness of 20swg. Each lath is retained by pressed steel or malleable iron endlocks fixed and secured by rivets. Cast iron wind locks are fitted to retain the shutter curtain within the guide channels in a fire situation.
Bottom Rail
Formed from mild steel flat bar & angle depending on door width, bolted back to back through a centrally located galvanised steel flat quirk.
Side guides and Angles
A purpose cold rolled mild steel section of depths ranging from 65mm to 100mm dependent upon the application. Mild steel angles of suitable size and thickness are supplied to support the side guides and to form a secure fixing to the structure.
Roller Bracket Plates
Of suitable design ranging from 6mm - 10mm thickness. Fitted with suitable cleats for fixing to the structure.
Operation
Self-coiling shutters are manually operated i.e. push up/pull down. The roller barrel is manufactured from 102mm 9swg tube and contains suitable sized springs to counter-balance the shutter. In a fire station, a solder fusible link melts at 72°C, releasing the shutter via a drop-bar and a ratchet and pawl mechanism.
Hand chain operated fire shutters are fitted with a gearbox unit complete with low level hand chain to open the shutter and a brake release cord, to close the shutter. The roller barrel is manufactured from mild steel tube of suitable outside diameter and wall thickness to suit the shutter application and is unsprung. The gearbox contains a controlled descent mechanism. A fusible Link backup facility is also provided as standard. A solenoid release mechanism is available which provide a manual test and reset facility and can be connected to a fire alarm system (by others).
Electrically operated shutters are fitted with a motor/gearbox unit complete with a push button station with UP, DOWN and STOP buttons. The roller barrel is manufactured from mild steel tube of suitable outside diameter and wall thickness to suit the shutter application and is unsprung. The gearbox contains a controlled descent mechanism and a brake release cord to close the shutter in the event of a power failure. A solenoid release mechanism is available which provide a manual test and reset facility and can be connected to a fire alarm system (by others).
Audio-Visual Panel
A popular extra for fire shutters is an audio visual panel which provides a warning that the shutter is about to close automatically via the fire alarm system. The panel requires a 240 volt supply together with an appropriate signal from the fire alarm system (by others).
Finish
Side guides, supporting angles and door curtain are galvanised. Non-galvanised sections are primer painted. Powder coated finish is optional and can be provided at an additional cost.
Hoods
Hoods are supplied as standard and are manufactured from 20swg galvanised steel sheet.
Test Report
Loss prevention Certification Board Reference No. 165a/01 (4 hour) and No. 165a/02 (2 hour). Test certificate No. TE 83228 - BS 476 part 22 1987.
Size/Weight
Maximum certified size of shutters is 7 m x 7 m (49 m²) and shutters weigh approximately 40 kg per m²
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