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Fire Roller Shutters Specification
Industrial Door Engineering
is a long established manufacturer of fire roller shutter doors. We manufacture and install under BS5750 Part 2 Quality Management System and to a fire test report by the Loss Prevention Council test report No. TE 83223 for BS476 Part 22 1987.
Fire doors are strictly tested in controlled conditions by means of face fixing them to an exposed all masonry structure.
Opening Construction
Approved doors and shutters meet their designated specifications when installed in accordance with these requirements :-
The sill and jambs of the opening shall be constructed of brick reinforced concrete blocks having dense or lightweight aggregate. Aerated concrete is not allowed.
The head of the opening shall be reinforced concrete at least 125mm deep having dense or lightweight aggregate with at least 50mm cover to the reinforcement or it may be a steel lintel provided it is covered by concrete not less that 50mm thick.
The lintel shall overlap the opening by a minimum of 250mm per side and the door weight is 40kg per square metre.
With an opening constructed as above your fire door will give 4 hours fire resistance.
Please Note!
Any Variation to the above will require special dispensation from the Loss Prevention Council.
Manual Doors
These doors can be used for normal security but will be heavier to lift than non fire rated doors. This should always be considered if the doors are used regularly.
Manual doors self close when a suspended weight is released on to the door bottom rail and over balances the door causing it to close under gravity.
The weight is suspended by one of three options as follows:-
Quartzoid Bulb Type
A bulb that melts at 68°C.
Solder Link
A high standard solder link that melts at 72°C and the standard release system for fire roller shutter doors.
Thermo Electric Quartzoid Bulb Type
This is used where high speed reaction to fire risk is required. These high-technology links can be incorporated into detection, alarm and fire fighting systems.
Operation:- Automatic when connected to electronic detector/fire alarm system or, (in event of system failure) when temperature reaches 68°C.
Electrical rating:- Maximum continuity test current 1 amp. Minimum operation current 1 amp. Maximum operation current 5 amp. Operation time at operation current 10 Ms.
ALL the above devices must be renewed after activation.
Powered Doors Standard System
The standard range of operators incorporates a clutch disengagement which can be manually or remotely operated by either a fusible link or solenoid operated unit.
The disengagement of the clutch initiates the controlled closure of the door curtain under its own weight.
The controlled descent facility ensures guaranteed closing of the curtain with the additional benefit of allowing frequent testing of the fire containment system without risk of damage.
Motor requirements:- 3 phase 10 amp and neutral.
Single phase:- (additional cost) 13 amp fuse spur.
Automatic clutch disengagement is achieved by two methods.
1. Fusible link assembly for operation of fire shutters in the immediate vicinity of a fire.
2. Solenoid operation by 24 volt DC signal from the smoke detection or fire alarm system.
Specification
Rated voltage 24 volt DC
Rated current 0.37 amp
Minimum operating voltage 18 volt DC.
Please Note !
There are many variations for electrical specification available, e.g. Stand-By Battery Powered Systems.
We would strongly recommend you discuss your electrical requirements with the Technical Department at our Head Office.
Safety Interface Unit
In buildings without separate personnel fire escape doors it is important to warn people that a fire door is about to close, to allow time to escape. An interface unit is available that on receipt of an alarm signal, sounds a siren and flashes a 'Warning Fire Shutter Closing' display. Other wording is possible if required.
After a period (adjustable up to 2 minutes), the door will close. One unit can close two doors, whether manual or electrically operated. The interface unit requires a continuous signal of 24v DC at 2 amps.
A repeater flashing unit, also requiring a 2 amp supply, can be used to warn personnel in another part of the building.
If the alarm system cannot supply the required current then a battery unit can be provided. The maximum current from a battery unit is 16 amps. It can power a combination of 8 interface and flasher units and requires a constant supply of 240v fused at 5 amps for trickle charging. In this case each interface unit requires a normally-open volt-free contact, rated at 2 amps, at the alarm control panel.
Alternatively, a slave relay operating from a 24v fire signal fused at 0.5 amps can be incorporated to trigger up to 4 interface units.
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