Fire Resistant Shutters in London and Essex – A200/Flameshield 240 – 60/120/240 Minutes

Tested in the United Kingdom and fully approved to British Standard BS 476: Part 22:1987 and BS EN 1634-1:2008 for up to 4 hours fire resistance.

Standard Certification covers fire shutters up to 7000mm wide x 7000mm high.

Additional contract specific assessments available for shutters above this size from Exova Warrington Fire.

Constructed from solid 75mm curved galvanised steel interlocking lath sections manufactured to BS EN 10142 and BS EN 10143 with a zinc coating of 275g/m² complete with zinc plated mild steel end locks and galvanised steel ‘T’ shaped bottom rail.

The curtain is available in 20swg (0.91mm) or 18swg (1.22mm) finished at the bottom with a galvanised steel ‘T’ shaped bottom rail.

Standard lath parameters as follows:

• Constructed from high quality mild steel tube manufactured to BS EN 10219
• Overall size of the tube varies to suit the width of the opening and weight of the shutter curtain
• Tube wall thickness varies depending on the size of the shutter from 3.2mm to 19mm to achieve minimum deflection and a safety factor of 2
• Barrels come complete with tempered steel helical torsion springs manufactured using hard drawn wire to BS 5216 mounted on bright steel shafts of various diameters from 20mm to 50mm depending on the size of the shutter
• Shafts are held in place using mild steel bearing blocks incorporating high-speed bearings to ensure concentric rotation

Formed from 6mm thick mild steel plate to and sized to accommodate the weight of the shutter and wrap of the curtain around the barrel.

End plate parameters will vary depending on the mode of operation as follows:

All the above parameters assume shutters are inside fixed. For other fixing arrangements consult manufacturer.

There is one type of guide available:

• Constructed from 65mm or 102mm x 32mm x 3mm thick galvanised steel channel manufactured to BS EN 10142 and BS EN 10143 with a zinc coating of 275g/m2, complete with splayed tops, bolted to 75mm x 50mm x 6mm thick continuous mild steel angle sections manufactures to BS 4848 Part 4, complete with 12mm x 50mm slotted fixing holes positioned at 550mm maximum centres.

• Constructed from 20swg (0.91mm thick) galvanised steel sheet manufactured to BS EN 10142 and BS EN 10143 with a zinc coating of 275g/m2, and fitted with hood support brackets constructed from mild steel angle sections manufactured to BS 4848 Part 4 and finished with a zinc-rich primer paint as standard
• The hood brackets support the hood and help provide a fire seal in the event of a fire. The number of support brackets used is determined by the width and fire resistance of the shutter

• All mild steel surfaces receive one coat of rust inhibiting primer paint
• All galvanised steel is manufactured to BS EN 10142 designation FeP02 G Z275 NA (Same as BS 2989 designation Z2 G N and ASTM A 527) and BS EN 10143, hot dip galvanised with a zinc coating of 275g/m2 and comes with a normal spangle finish
• Paint finish available using a polyester powder coating system (minimum DFT 50 microns, average DFT 70 microns) to any standard RAL or BS 4800 colour

• Maximum Size: 6000mm wide x 4000mm high
• Operation is via a manual hand chain mechanism (which may require the addition of double reduction gears towards the larger widths and heights in the available range) using a spring assisted barrel
• Manual fire shutters are under sprung in order to ensure they close in the event of a fire, consequently, frequent use is not recommended
• Designed to remain in the open position and close in the event of a fire
• After a fire test, the shutter can be hauled back into the open position using the hand chain
• Closing is via a drop bar weight located in the secondary guide channels

• Maximum Standard Size: 7000mm wide x 7000mm high
• Larger size fire shutters can be manufactured but require special certification from Exova Warrington Fire
• Shutter driven by a geared electric motor unit rated to IP54 complete with an integral controlled descent mechanism, rotary limits, emergency hand chain mechanism and push button starter rated to IP65 with open/close/stop controls requiring an electrical supply of 415v 3 phase 50Hz
• A variety of release mechanisms can be incorporated in the operator package including fusible link, quartzoid bulb and manual or automatic reset solenoid release mechanisms
• For further details on the release mechanisms see separate section

Fusible link Release Mechanism

• A soldered link designed to melt at 68°C separates and release the drop bar (on manual shutters) or the clutch (on electrically operated shutters) putting the shutter into the fire mode making it close

Manual Solenoid Release Mechanism

• The solenoid release mechanism is designed to be connected to the fire alarm
• On receipt of a 24 volt 0.5amp signal, the solenoid will release the drop bar weight and the shutter will close

Automatic Reset Solenoid Release Mechanism

• The auto reset solenoid release is designed to be connected to the fire alarm system
• Upon receipt of a 24 volt 0.5amp signal, the clutch will disengage allowing the door to close under controlled descent

When the door is returned to the open position after removal of the fire signal, the solenoid will reset itself automatically. This is commonly used and ideal for frequent testing.

Manual Controlled Descent

• Designed to control the descent of the shutter in the event of a fire
• We recommend that this should be used on all manual shutters that are linked to the fire alarm using either a quartzoid bulb or solenoid release mechanism, where there is a risk of someone being underneath the shutter when the fire alarm is being tested.

Fire Door Interface (F.D.I.) Audio-Visual Warning Panel

• Fire Door Interface panels consist of an audio-visual warning and timer delay
• Upon receipt of a 24 volt 2amp signal a siren will sound and the warning FIRE DOOR CLOSING display will flash
• After a pre-set time the panel will send a signal to the solenoid release mechanism causing the clutch to disengage and the shutter will close
• A repeater panel can also be provided to the other side of the opening if required. This also requires a 2amp supply

Fire Door Interface (F.D.I.) Battery Back-Up Panel

• If the fore alarm system cannot provide the required amount of current to activate the chosen system, an FDI battery back-up panel can be provided. This is capable of giving a maximum output of 16amps, which will provide enough current to activate three locally based shutters using an audio-visual repeater panel and an auto reset solenoid release
• The panel will require a supply of 240volts rated at 5amps

• 3 Phase Operators: 415 volts, 3-phase, 50Hz neutral and earth rated at 10amps per phase
• Single Phase Operators: 240 volts, 50Hz rated at 13amps (motor fuses)
• Solenoid Release: 24 volt D.C 0.5amps on activation
• Solenoid and F.D.I / Audio-Visual Panel: 24 volt D.C 2amps on activation
• Solenoid / F.D.I / Audio-Visual / Repeater Panel: 24 volt D.C 4amps on activation