The curtain head box is manufactured from 1.2mm zintec steel, the enclosure is rated at the same temperature as the curtain fabric. Removable cover plates are incorporated to allow access to the curtain rollers. Standard head box sizes are 180mm x 180mm larger head boxes may be required where the curtain drop is in excess of 3m. A suitably weighted bottom bar is provided to prevent deflection and ensure correct operation under gravity.
The roller is constructed from tube, each of which incorporates a 24volt D.C motor. The fabric curtain is manufactured from stainless steel reinforced glass fibre fabric. The curtain fabric is made from stainless steel reinforced glass fibre. The weight is approx. 640 g/m2 in its finished form. Fabric thickness is 0.54mm and the weave is 8 shaft satin and is tested to withstand temperatures of up to 1000°C for a period of 264 minutes.
Side guide with a fabric retaining system shall be installed either side to provide a seal between the curtain fabric and the surroundings.
The Firesafe 240 curtain has fixing options to suit all types of ceiling configurations and can be integrated into either a suspended or a solid ceiling. It remains hidden until required. Upon receiving a signal from the fire detection system or on loss of power with the gravity fail safe system, the curtain automatically unwinds to its operational position
Under normal operating conditions the curtains would be held in the retracted position via the motors operating at low voltage. Upon activation of the fire alarm the control panel will remove the supply voltage and the curtain will descend under the power of gravity in a controlled manner. A dynamic braking system housed in the motor control circuit controls the speed of descent of the curtain, this is electronically synchronised on overlapping curtains with a common bottom bar.
To retract the curtain the control panel supplies 24v to the motor and the motors drive the curtains to the upper position. As the bottom bar hits the curtain head box the limits setting holds the bottom bar in the retracted position.
Should the mains power fail to the group control panel the supply is automatically switched to the integral standby battery. The curtain remains in the retracted position for 24hrs. The curtain will remain fully operational until the battery low voltage cut off facility reads a voltage of 21v, the curtains will then safely descend under the power of gravity to the operational position.
|Code of Practice for fire safety in the design, construction and use of buildings. Incorporates BS5588-7:1997 which is now withdrawn.||V.3.5
Smoke control systems for means of escape. Actuation of the system should be simulated once a week. It should be ensured that any fans and powered exhaust ventilators operate correctly, smoke dampers close (or open in some systems), natural exhaust ventilators open, automatic smoke curtains move into position etc.
Hold open devices. The operation of hold open devices should be tested once a month by simulating failure of the mains power supply or operation of the fire alarm system. The results of the test should be recorded. Any doors that are found to be faulty should be repaired or replaced.
|Specification recommendation for active fire curtain barrier assemblies and active fire curtain barrier assemblies with smoke rating.||Part 4
The system shall be maintained at least once a year including a functional test. The scope shall be in accordance with a specific maintenance plan based on the manufacturer's recommendations. Maintenance shall be carried out by qualified personnel.
|Specification for Smoke Barriers||In order to ensure compliance, reliability and integrity, smoke barriers shall be inspected, serviced and tested as defined in 12101-4 by personnel trained & qualified in the product.|
To include the following:
- Recommended procedures for operational checks
- Recommended check for obstructions
- Recommended checks for the effects of corrosion
- Recommended check for mechanical fastenings
- Recommended check for power supplies & controls
- Recommended check for penetrations, holes etc
- Recommended check for anything which materially affects the performance of the product
SINGLE CURTAIN DRAWING
160mm x 160mm 180mm x 180mm 200mm x 200mm
OVERLAPPING CURTAIN DRAWING
160mm x 320mm 180mm x 360mm 200mm x 400mm
- Complete product tested to (BS) EN1634- 1 and achieved a rating of DH (1000°C, above 240 minutes).
- When tested to EN1634- 1 the FireSafe 240 product achieved Integrity performance of 264minutes and irradiance (W) of 30 minutes.
- Classifications as detailed within EN 13501 - 2:2007 + A1: 2009 therefore detailed as E240 EW30.
- Designed to operate for 2000 cycles at normal ambient temperatures in the range of 0°C to 60°C and to withstand hot air and smoke at temperatures up to 1000°C for over 240 minutes once only.
- The Firesafe 240 can be provided to protect openings widths of up-to 30m on an over lapping system and heights upto 6m.
- Split Drop
An optional braking system is available to allow a stage descent during gravity deployment. Partial descent to a predetermined level to permit preliminary escape and initial smoke containment, after delay the barrier descends to full operational position.
- Delay on Alarm
The system control can be programmed to allow a timer delayer on the alarm for a number minutes before the barrier descents to its fire operations position.
- Beam Sensor
A beam sensor by itself can be used as either a block sensor or an override; when the fire alarm goes off and someone passes through the curtain the beam sensor can be wired to either stop the curtain in its tracks or to retract the curtain. Please note that when used in isolation the beam sensor does not trigger a sound.
- Emergency Override Switches
Hold on retract facility for escape and emergency service access.
- Visual Alert System
Flashing light and sirens are connected to the control panel and provide a warning when the curtain is about to descend. When the fire alarm is triggered and the fire curtain deploys the beacon will flash and a sounder alert until the signal from the alarm is lost. Please note that when used in isolation the audio visual unit does not stop the fire curtain descending or retract the curtain.
COMPLIANCE FOR THE FIRESAFE E240 EW30
|Clear Opening Height (mm)||YES||Motor|
|BS EN1634 - 1: 2000||YES||Integrity 240 minutes Methods of Test|
|BS EN 1634 - 1 :2008||YES||Integrity 240 minutes Methods of Test|
|EN 12101 Annex B||YES||Self-Closing Durability Tests|
|BS EN 1363 - 1: 1999||YES||Fire Resistant Testing Instructions|
|BS EN 1363 - 2 :1999||YES||Fire Resistant Further Testing|
|BS EN 13501 - 2:2007 + A1:2009||YES||Classification Document|
- BS EN 1634-1:2008
- BS EN 1363-1:1999
- BS EN 1363-2:1999
- BS EN 12101 Annex B
- EN13501-2:2007 + A1:2009