Automatic Fire Shutters

Shutter Types

Self Coiling/Manual Shutters

Maximum structural size: 3000mm wide x 3000mm high.

Ideal for smaller openings this type of shutter can be manually operated by lifting handles attached to the bottom rail. The shutter is counterbalanced by helical wound springs to ensure correct balance of the curtain and to ease operation. Manual shutters are mainly designed to be left in the ‘raised’ position or used on an infrequent basis. In a fire condition the shutter is automatically closed by a fusible link which releases a drop bar weight located in a secondary guide channel. If the door is to be activated by a remote fire alarm signal a speed governor should be included to control the shutter curtains descent. Additional warning systems can also be introduced if required.

Chain Operation/Manual Shutters

Maximum structural size: 5000mm wide x 4000mm high.

Suitable for similar applications to the self coiling shutter but for larger openings.
Operation is by a hand chain mechanism through a manual (motor type) unit which incorporates a controlled descent mode as standard. As with the self coiling shutter this type is also designed mainly to be left in the ‘raised’ position and close in the event of a fire.

Electrically Operated Shutters

Maximum structural size: 7000mm wide x 7000mm high.
(Individual assessments for larger openings can be requested)

Designed for all sizes of opening but especially larger openings. Driven by a geared motor which incorporates an integral controlled descent mechanism of approx 100mm per second. Operation is by a push button control station positioned adjacent to the door to enable sight of the door during normal operation. Manual operation can be achieved by releasing a pull cord to close the shutter with hand chain to open. These types of shutters are not recommended for openings in constant use.

Release Mechanisms

Fusible Link

Consists of a soldered link design to melt in a fire condition which either releases the drop weight on a manual door or clutch on electrically operated doors activating the closure mode. This system cannot be linked to the fire alarm.

Manual Solenoid Release

This mechanism is designed to be linked to the fire alarm (by others). On receipt of a 24V DC signal the solenoid will release the drop weight or brake unit. The unit can be reset manually.

Automatic Reset Solenoid

Again designed to be connected to the fire alarm (by others). Upon receipt of a 24V DC 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 automatically. This is the most common set-up and ideal for frequent testing.

Manual Controlled Descent

This system is a manual motor type unit and as standard incorporates controlled descent facility.

General Specifications

Our Fireshutters are tested for up to 4 hours in accordance with Warrington fire Research.

Curtain

Constructed from 75mm continuously interlocked steel laths, which are held in place by steel end locks to prevent lateral movement complete with ‘T’ section bottom rail.
Curtain constructed from either 20swg (0.91mm) or 18swg (2.1mm) thick galvanised material.

Guides

Galvanised guide channels are manufactured from 3mm material. Guides are fixed to the jambs of the opening with continuous angles complete with slotted fixings to allow for expansion. Manual shutters have a secondary channel to cater for a drop weight mechanism (see modes of operation).

Barrel Assembly

Constructed from a seamless steel tube, the wall thickness being governed by the shutter size. Integral helical wound springs to ensure correct door balance and ease of operation.

End Plates

These are mounted above the opening height to support the weight of the roller barrel and the curtain assemblies. The endplates are formed from 5/6mm mild steel plate and are sized to accommodate the weight of the shutter together with the wrap of the curtain around the barrel.

Hoods

Manufactured from 20swg galvanised material to suit the size of the endplates.
Support brackets are required on shutters over 4000mm wide to provide additional stability in a fire condition. Electrically operated shutters with a clear opening height of 2500mm or less also require a motor cover to comply with health & safety.

Finish

Majority of the parts are galvanised as standard with any steel parts being finished with one coat of primer. Powder coat finishes to BS or RAL colours are also an option.

Additional Features

Audio Visual Warning Unit/Fire Door Interface Panel

Consisting of an audio visual warning with timer delay. This unit is linked into the fire alarm and upon receipt of a signal a siren will sound and the warning FIRE DOOR CLOSING display will flash.

After a pre-set time (adjustable within the panel) the panel will send a signal to the solenoid release mechanism activating the shutter close mode.

A warning repeater panel can also be introduced to the other side of the opening if required. Battery back up facility can also be introduced if the alarm system cannot provide the required current.

Certification

BS EN 1634-1:2000

Fire resistance tests for doors, shutters and openable windows

Certified by Warrington FRC, UK

BS EN 1634-3:2004

Smoke control test for door and shutter assemblies

Certified by Chiltern International Fire, UK

Warning

Don't be fooled by other fire shuter manufacturers, always ask to see a copy of the test certificate for the fire or smoke curtain you are buying as lives could be at risk