At Abacus Shutters we understand your business needs the right fire shutter for the job. And we’re also aware that, especially in areas like receptions and serveries, you want it to look good, too. Our innovative, bespoke range of stylish and effective Flameshield 60 shutters and Flameshield 120 shutters in London and Essex gives you the fire safety protection you need, with clean lines and discreet internal motors also enhancing the aesthetics of your secured premises.
Testing & Certification
Testing and Certification
Fire Test: Clause 8 BS 476: PART 22: 1987 & EN1634-1:2008
Warrington Fire Research Centre: WARRES No 145904
Integrity: 120 minutes
Maximum Surface Area: 10m²
Curtain
Curtain
Manufactured from a 50mm flat (5.3 kg/m² )/ 75mm 20swg (16.5kg/m² ) galvanised steel dome laths interlocked with steel end locks and galvanised double angle formed bottom rail (49mm high x 74mm deep)
Barrel
Barrel
Manufactured from mild steel tube (101.6mm (1.6mm), 101.6mm (3.2mm) or 5”round steel barrels are used), tube size varies based on the overall width and height of the curtain and the gauge of laths. The tube wall thickness varies dependant on the width of the shutter, the barrels are mounted on bright steel shafts varying from 18mm to 30mm dependant on the overall size of the shutter. The shafts have mild steel bearing blocks at non geared end and tubular motor at the geared end.
End Plates
End Plates
Manufactured from 3mm mild steel plate. The end plate has a formed motor compartment which will be packed with non-combustible material.
Guides
Guides
Constructed from 50mm-65mm straight channel galvanised guide mounted on 50mm x 50mm mild steel angle (minimum) and the guides/angles are slotted for expansion.
Hood
Hood
Formed from 20sg steel sheet, with the top leg slotted for expansion. Dependant on the fire rating of the shutter (i.e. 1 hour, 2hour) and the size of the opening, the shutter could require a hood support bracket.
Finish
Finish
The curtain and guides are galvanised, angles, barrel and end plates are painted.
A paint finish using a polyester powder coating system is available, the colour to a standard RAL or BS4800 number subject to availability.
Operation
Operation
The door is arranged for 1ph 240v AC tubular motor, which is supplied as standard with a 2.5m 4 core cable.
Release Mechanisms
Release Mechanisms
- Fire relay & key switch (requires maintained supply, battery back-up needed if no maintained supply)
- ii. Fire relay, key switch & fusible link (requires maintained supply, battery back-up needed if no maintained supply),
- Fusible link if no fire alarm.
Safety Regulation
Safety Regulation
All shutters comply with the supply of machinery safety regulations 1992. All electrically powered shutters are CE Marked as standard.
Fire Relay
Fire Relay
Principally the commonly used means of release, the characteristics mimic the use of the solenoid on the conventional fire shutter, again linked to the fire alarm, the shutter rather than closing manually through the gearbox will of course be powered down.
The unit will require a maintained supply; if this is not possible a separate battery back-up unit can be provided. 200mm long x 130mm wide x 70mm deep. A volt free signal is required from the fire alarm.
Fusible Link Release
Fusible Link Release
On activation the link, which is a soldered link, separates and releases at 64 degrees centigrade, in effect the temperature release of the link creates a signal to the relay which in turn powers the door down. Again if there is no facility for a maintained supply the battery back-up unit must be used.
Audio Visual Warning (FDI)
Audio Visual Warning (FDI)
Principally this unit is designed to delay the closing of the fire shutter; generally the fire alarm is linked to the audio visual unit and from the audio visual unit straight into the key switch. There is no need for a separate relay; there is already a relay in the FDI. On activation from the fire alarm the unit starts to “flash & sound”, this unit contains a programmable timer which effectively delays the signal to the relay in the panel to close the door. 230mm wide x 240mm long x 120mm deep. A technical sheet giving features and benefits is enclosed with this manual.
Back-Up Unit
Battery Back-Up Unit (UPS)
Principally the tube motor fire shutter requires a maintained supply. If this cannot be achieved then effectively the shutter will require a battery back-up unit. Fundamentally if under fire conditions there is a power failure the shutter must have a means of ensuring closure, the unit provided will give the facility for at least one operation under fire conditions. The unit must remain plugged into the mains at all times, or alternatively you can wire this into a fused spur. In effect the shutter should always receive a signal from the fire alarm, under British Standards the fire alarm must have a battery back-up, in the unlikely event of a power failure under fire conditions i.e. alarm has been triggered and the door is closing, if there is a power failure at that particular time the battery pack provided will continue to close the door.
When using the shutter under normal conditions, if there is a power failure the unit can be used again for at least one operation to open or close the shutter manually via the key switch, please bear in mind the unit will require a recharging period of up to 8 hours.
The maximum stand by period for this unit is 4 hours.
It is recommended that you only use the modified battery back-up unit provided by Abacus Shutters Limited, the use of any other unit would problematic and could nullify the warranty.
The unit comes complete with a wall mounting bracket, the unit must be mounted at high level next to the motor (see layout drawing for dimensions etc.
The physical dimensions of the unit are 280mm long x 170mm high x 90mm high.
The typical battery lifetime is 3-6 years depending on the number of cycles and operating temperature, replacement batteries can be ordered when required.
Fire Shutter - Size
Fire Shutter – Size Parameters
The shutter test relates to 1 hour / 2 hour fire resistance.
Effectively the shutters are generally intended for protection of a range of openings in masonry / concrete, steel, steel stud or timber partitions.
The maximum clear openings are for 4000mm wide x 2500mm high, or in a partition system for 1 hour up to an area of 10m², principally this incorporates the BRE test FG 7941N which relates to a tested fire shutter in a stud partition, the opening must be fire rated to suit and be capable of carrying the weight of the shutter. Consideration must be given to the additional weight of the shutters over 3500mm wide x 3000mm high, the configuration/strength of the partition must be increased accordingly.
Where the shutters are used to protect serveries it is assumed that the counter is composed of non-combustible material and the counter is of sufficient width to ensure that the bottom rail movement under heating cannot result in the rail overhanging the counter.
Initially the intended maximum width for the flat lath will be 3500mm.
Shutters over 3500mm up to 5500mm will be traditional curved lath tube motor construction, based on a maximum area of 10m².
Shutters under 4000mm clear width will have 50mm guides and shutters over this width will have the traditional 65mm guides.
The size of the endplates will be 305mm square.
For more information about Flameshield 60 shutters and Flameshield 120 shutters in Essex and London please contact Abacus Shutters on 0845 644 1225.
