Technical Manual(European Standards)
Version 1.0 (0517)
THE LEADING EDGE IN Smoke & Fire CurtainsOffice Tel: 0114 251 4703 Email: [email protected]: www.ble-smokeandfirecurtains.com
- System Overview- Installation- Maintenance & Troubleshooting- Manufacturing Information
1 System Overview1.1 Description 3-41.2 Components 5-61.2.1 Fabric 51.2.2 Motor and shaft assembly 61.2.3 Roller tube 71.2.4 Headbox 7-101.2.5 Side guides 10
1.2.6 Bottom bar 101.3 Control system 111.3.1 Group control panel (GCP) 121.3.2 Motor control circuit (MCC) 13-14
2 Installation2.1 Fixings information 152.2 Headbox 162.3 Side guides 162.4 Roller mechanism 16-172.5 Motor control circuit (MCC) 18-192.5.1 MCC Wiring Instructions 18-192.6 Group control panel (GCP) 1st fix 192.7 Mains electrical supply 202.8 Bottom bar 202.9 Group control panel (GCP) 2nd fix 202.10 Control options and accesories 22-242.10.1 General control options 22
- Smoke / heat detector- Fusible link- GCP interlinking
2.10.2 Standard control options for Multi Function GCP
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- Manual override- Two stage descent and setting delay timers- Individual override interface (IOI)
2.10.3 Additional control options for Multi Function GCP
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- Audio visual facilities- Obstruction sensors
Contents
3 Maintenance & Troubleshooting3.1 Weekly testing 253.2 Annual Maintenance 253.3 Troubleshooting 26
4 Manufacturing Information4.1 Site conditions 274.2 Straight smoke curtains without side guides 274.3 Angled curtains without side guides 284.4 Facetted curtains without side guides 284.5 Fire curtains and smoke curtains with side
guides28
5 Installation NotesInstallation notes 29-30
Contact InformationBLE Smoke & Fire Curtains LtdUnit 3 Holbrook Commerce Park,Holbrook Rise,Sheffield,S20 3FJ
Tel: 0114 251 4703Email: [email protected]: www.ble-smokeandfirecurtains.com
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Contents
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BLE active smoke and fire curtains consist of a woven glass fibre fabric wound onto a tubular steel roller assembly incorporating a 24V permanent magnet motor. The roller assembly is fitted inside a galvanised steel head box that can be fixed directly to the structure of the building.
A Group Control Panel (GCP) is used in conjunction with Motor Control Circuits (MCC) to operate upto 6 No. 24V permanent magnet motors to control the deployment and retraction of the curtains. In normal conditions the GCP provides a 24V supply to the motors and the curtains are held in the retracted position in the head box. When a fire alarm is activated the contact in the GCP is opened and the power is removed from the motors, releasing the curtains to deploy under gravity in a controlled manner (Gravity Fail Safe). When the fire alarm system is reset the GCP reinstates the 24v supply to the motors and the curtains are retracted to their normal position in the head box. Current limiting switches detect when the curtain has fully retracted and the supply voltage to the motor is stepped down to a holding voltage. Motor limit switches are not required.
In the event of a mains power failure the 2 No. 12v 7ah back-up batteries supplied with the GCP can maintain full control of the system for up to 4-hours. If a fire alarm signal is activated during a mains power failure the Fire Curtains will deploy in a controlled manner as normal.
Manufacturing is to BSEN ISO 9001 and all BLE curtains have been extensively tested to the appropriate European Standards, including BSEN12101 Part 1: Smoke and heat control systems, BSEN1634 - Part 1: Fire resistance test for door and shutter assemblies and openable windows, and BSEN1634 – Part 3: Smoke control test for door and shutter assemblies.
1. System Overview
1.1 DESCRIPTION
1. System Overview
Smoke Curtains stop the spread of smoke and/or help channel it to an extraction system. In operation
Smoke Curtains typically remain above head height to allow the safe passage of people underneath.
Fire Curtains stop the spread of fire and in operation descend fully to floor level as well as incorporating side guides to ensure a secure fire seal with the building structure.
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1. X32K 2. C41000WK 3. EW-BI 4. V4A
Four types of fabric can be specified depending on the application and smoke/fire rating require: 1. X32K - Micronised aluminium polymer coated glass fibre fabric. Manufactured weight of 540g/m². Used on model FC1 fire curtains and model SC1 smoke curtains, as well as model SC2 fixed smoke barriers. Has a fire rating of up to 1 hour for integrity (E) and irradiation (W), depending on the size of the curtain. And a smoke rating of 2 hours at 600oC.
2. C41000WK - Micronised aluminium polymer coated glass fibre fabric with stainless steel reinforcement. Manufactured weight of 700g/m². Used on the model FC2 and HC1 fire curtains. Has a fire rating of up to 4 hours for integrity (E) and 1 hour for irradiation (W), depending of the size of the curtain.
3. EW-BI – Intumescent coated glass fibre fabric with stainless steel reinforcement. Used on model FC3 fire curtains. Has a fire rating of up to 240 minutes for Integrity (E), and 90 minutes for Irradiation (W), depending on the size of the curtain. 4. V4A – Composite fabric with two layers of stainless steel reinforced glass fibre fabric with aluminium foil laminated to both sides. Used on the model FC4 fire curtain. Has a fire rating of up to 2 hours for integrity (E) and 2 hours for irradiation (W), depending on the size of the curtain.
The fabrics are manufactured in rolls of various widths, with the finished curtains normally assembled from multiple panels sewn together along their length. Each panel overlaps the adjacent panel by 50mm with hems stitched using two rows of stainless steel thread.
Where side guides are required the fabric incorporates securing tabs along the vertical edges with a retaining mechanism that securely locates the fabric into the side guides. The fabric is normally supplied with a slightly longer drop than specified. This allows for accurate fixing of the bottom bar and final trimming of the fabric on site. Table 1 and Table 2 give the size limitations and fire/smoke ratings for the full range of BLE Smoke and Fire Curtains to European standards.
1.2 COMPONENTS1.2.1 FABRIC
Table 1 – BLE Fire Curtain Product Matrix (European Standards)
Table 2 – BLE Smoke Curtain Product Matrix (European Standards)
Designation SingleRoller
MultiRoller
Max Width (M)
Max Drop (M)
Classification TestStandard
Certificate / Reports
Active Barrier SC1-D120
Yes Yes Unlimited 10.0 D120 / DH60 BSEN 12101
Certifire CF5030EC CoC 112-CPD-FA0001
Fixed Barrier SC2-D120
Yes Yes Unlimited 10.0 D120 / DH60 BSEN 12101
Certifire CF5030 EC CoC 112-CPD-FA0001
For large curtains (depending upon the weight of the fabric and bottom bar) it is sometimes necessary to use two motors in the roller tube, rather than one motor and one shaft.
Designation SingleRoller
MultiRoller
MaxWidth (M)
MaxDrop (M)
Fire Resistance (mins) TestStandard
Certificate /Reports
Integrity (E)
Irradiance (W)
FC1 Yes No 3.0 3.0 60 -BSEN 1634 Certifire CF5432
Yes No 2.8 2.5 60 30
Yes No 1.4 2.5 60 60
FC2 Yes No 7.0 8.0 60 30
BSEN 1634 Certifire CF5433
Yes No 7.0 7.0 120 30
Yes No 7.0 6.0 180 30
Yes No 7.0 5.0 240 30
Yes No 2.4 2.7 240 60
No Yes Unlimited 6.0 240 -
FC3 Yes No 2.6 2.7 240 90BSEN 1634
WF333584WF334668
Yes No 7.0 5.0 60 60 WF349969
FC4 Yes No 2.6 2.7 120 120BSEN 1634
WF341904WF342381
Yes No 7.0 4.0 60 60 WF349970
Horizontal HC1
Yes No 6.0 6.0 180 - BSEN 1634 WF333819WF333952WF337802
1.2.2 MOTOR & SHAFT ASSEMBLY
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The standard smoke and fire curtain motor is a 24v dc unit manufactured in-house and installed into the end of the roller tube. Each motor is supplied with a factory fitted drive coupling to suit the type of roller tube being used. The motors can be manufactured with either a clockwise or anti-clockwise retract operation (when viewed on the end of the motor).
The shaft assembly is normally fitted into the roller tube at the opposite end to the motor and consists of two bearings and a free-sliding shaft. For curtains incorporating a two-stage descent facility the motor also incorporates a 24v brake unit.
NOTE
BLE Smoke and Fire Curtains incorporate a 76mm diameter 4mm thick steel tube as standard. For larger curtains, depending on the weight of the fabric and bottom bar, a heavier 127mm diameter roller tube may be required to limit deflection and ensure smooth operation.
Where multiple rollers are used to make up wide curtains the curtain fabric is overlapped. Overlaps are nominally 200mm for Smoke Curtains and 600mm for Fire Curtains. For multiple roller curtains each individual roller should be of the same length to ensure that the curtain deploys evenly.
The standard curtain head box is manufactured from 1.2mm thick (18swg) galvanized steel sheet. It is typically manufactured in 2500mm wide sections. For wider curtains joining sections are included to enable the sections to be connected together. The head box comes as standard with a removable cover plate which forms the underside of the box and allows access to the roller mechanism. The cover plate is attached using self-tapping screws as standard. Head boxes are also available with removable side access panels as an option. The overall dimensions of the head box are dependent upon the width and drop of the curtain.
For all fire curtains over 2.5m wide additional roller support brackets are fitted inside the head box to support the roller as it deflects due to the extreme temperatures in a fire. These support brackets are supplied loose and must be fitted after the roller mechanisms are installed into the headbox. The omission of these components will result in the assembly not meeting the fire test criteria.
1.2.3 ROLLER TUBE
1.2.4 HEADBOX
NOTE
Model FC1 Fire Curtain – Standard Headbox Size (180mm x 180mm if over 2.5m wide)
Model FC2 Fire Curtain – Standard Headbox sizes (* 150mm x 150mm if less than 2.5m wide)
Curtain Drop Single Roller
< 3m 150mm x 150mm
Curtain Drop Single Roller Over / UnderMultiple Roller
Side by SideMultiple Roller
< 3m 180mm x 180mm* 180mm x 310mm 310mm x 180mm
3 - 6m 210mm x 210mm 210mm x 350mm 350mm x 210mm
6 - 8m 230mm x 230mm NA NA
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Model FC3 Fire Curtain – Standard Headbox
Model FC4 Fire Curtain – Standard Headbox
Model HC1 Fire Curtain – Standard Head Box sizes
Curtain Drop Single Roller
< 3m 235mm x 255mm
3 -5m 255mm x 275mm
Curtain Drop Single Roller (2№ Per Curtain)
< 6m 230mm x 230mm
Curtain Drop Curtain Width Single Roller (76mm)
< 4m < 5.5m 210mm x 210mm
Curtain Drop Curtain Width Single Roller (127mm)
< 4m 5.5m - 7m 235mm x 255mm
Model SC1 Smoke Curtain - Standard Head box sizes
Curtain Drop Single Roller Over / UnderMultiple Roller
Side by SideMultiple Roller
< 3m 150mm x 150mm 150mm x 250mm 250mm x 150mm
3 - 6m 180mm x 180mm 180mm x 310mm 310mm x 180mm
6 - 10m 210mm x 210mm 210mm x 350mm 350mm x 210mm
1.2.5 SIDE GUIDESSide guides are mandatory on all Fire curtains and can also be used on smoke curtains to limit smoke leakage and deflection if required. The edge of the fabric is locked into the guide to provide a seal with the building structure. The side guides are manufactured from 2mm thick galvanized mild steel and are 100mm deep and 50mm wide with a 10mm throat. They can be supplied with fixing angles attached or with the sides being drilled and capped to allow for face fixing to the building structure.
1.2.6 BOTTOM BARThe standard bottom bar consists of twin 20mm x 20mm x 3mm steel angles fixed back-to-back to form an inverted “T”. To ensure the curtain deploys correctly the weight of the bottom bar must be a minimum of 4kg. If two motors are used in a single roller the bottom bar weight must be a minimum of 9kg. The foot of the bottom bar is removed at each end to enable it to enter into the side guides. Heavier bottom bars than standard can be supplied to ensure correct deployment of the curtains and/or to limit the deflection of the curtain under the pressures created by the hot gases in a fire.
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1.3 CONTROL SYSTEMSA Standard or Multi-Function Group Control Panel (GCP) is used in conjunction with Standard or Multi-Function Motor Control Circuits (MCC) to operate up to 6 No. 24V permanent magnet motors to control the deployment and retraction of the Curtains. If a single curtain or if the operations of multiple curtains with a total of more than 6 motors requires to be syncronised then Multi-Function GCPs should be used, which enable the GCPs to be linked.
Group Control Panel (GCP) - External & Internal
Motor Control Circuit (MCC) - External & Internal
In normal conditions the GCP provides a 24V supply to the MCC and the curtains are held in the retracted position in the head box. When a fire alarm is activated the contact in the GCP is opened and the power is removed from the motors, releasing the curtains to deploy under gravity in a controlled manner (Gravity Fail Safe). When the fire alarm system is reset the GCP reinstates the 24v supply to the MCC and the curtains are retracted to their normal position in the head box. Current limiting switches detect when the curtain has fully retracted and the supply voltage to the motor is stepped down to a holding voltage.
In the event of a mains power failure the 2 No. 12v 7ah back-up batteries supplied with the GCP can maintain full control of the system for up to 4-hours. If a fire alarm signal is activated during a mains power failure the Fire Curtains will deploy in a controlled manner as normal.
LED status Indicators - LEDs on the front of the Standard GCP display the status of the mains supply, battery charge, alarm and any fault in the CPU. The Multi-Function GCP has extra LEDs that display if a delay timer or override function is active.Manual override – Facility to temporarily raise all the curtains connected to the GCP after deployment, for emergency egress.Two stage descent – Programmable timer delay that deploys the curtain in two stages to allow egress before full deployment of the curtain. First stage deployment time from 0 – 20 seconds followed by a delay of up to 90 seconds before full deployment. Delayed descent – Programmable timer delay of up to 90 seconds after the fire alarm signal is activated before full deployment of the curtain.Delayed ascent – Programmable timer delay of up to 90 seconds after the fire alarm signal is reset before retraction of the curtain.GCP interlinking – Enables multiple GCP’s to be connected when more than 6 motors are controlled by one alarm signal, to ensure synchronisation of curtain descent and retraction. Heat or Smoke detector – Can be used in place of, or in combination with, the main fire alarm signal. Requires a manual reset button.AV facility – Audio Visual Unit that activates to warn that the curtains are descending. Sounder beacons can also be used. BMS connection – The GCP can be linked to a Building Management System to show the status of mains power, battery charge, alarm, timer delays and manual override.Curtain released signal – Signal to the BMS to confirm that the curtain has been released. Obstruction sensor – Gives a warning if there is an obstruction in the path of the curtain.
Feature Standard GCP Multi-Function GCP
Controls up to 6 motors Yes Yes
2 x 12v 7ah backup batteries Yes Yes
Test key switch Yes Yes
LED status indicators Yes Yes
Manual override (requires push button) No Yes
Two stage descent facility (requires brake motor) No Yes
Delayed descent No Yes
Delayed ascent No Yes
GCP interlinking No Yes
Heat or smoke detector with manual reset button Option Option
AV connection facility No Option
Building Management System (BMS) connection No Option
Obstruction sensor facility No Option
Curtain released signal facility No Option
The Multi-Function GCP can control a maximum of six standard MOTORS, or a maximum of three large 127 roller motors.
1.3.1 GROUP CONTROL PANEL (GCP) - FEATURES & OPTIONS
NOTE
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GCP Specification
Power input 230Vac 50Hz
Alarm input Normally closed volt free. Open on fire alarm activation. Confirgured to be fail safe.
Dimensions and finish Hinged door, white painted mild steel enclosure 396mm High x 334mm Wide x 105mm Deep
Controlled curtain descent – Back electromotive force (EMF) of the curtain motor ensures the controlled gravity fail safe deployment of the curtains. 45 / 90 second ascent run timer – For longer curtain drops the run timer can be set to 90 seconds to ensure the curtain retracts fully into the head box. Current controlled ascent – When the curtain has fully retracted the motor voltage is reduced. No limit switches are required. 127 motor control – Larger 127mm diameter rollers/motors can be used for large/heavy curtains. Individual Override Interface – Manual override for an individual curtain on a GCP loop that contains multiple curtains. The period of time the curtain remains raised after the IOI is activated can be controlled from 0 -90 seconds.
Feature Standard MCC Multi-Function MCC
Controlled curtain descent Yes Yes
45 or 90 second ascent run timer Yes Yes
Current controlled ascent (no limit switches) Yes Yes
Two stage descent facility (requires brake motor) No Yes
Larger 127mm motor control facility No Yes
Individual Override Interface (requires push button) No Yes
If the MCC is installed remote to the headbox with the motor cable exposed then the motor cable must be protected in a fire rated conduit.
1.3.2 MOTOR CONTROL CIRCUIT (MCC) - FEATURES & OPTIONS
CAUTION
WARNING
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Ensure that the motor flying lead is connected into the MOTOR + and – terminals on the PCB and NOT the “SUPPLY IN” Terminals. Incorrect connection will damage the motor. See wiring schematics for full wiring details.
MCC Specification
Input voltage 27Vac / 24Vdc
Outout voltage 24Vdc
Dimensions and finish White painted mild steel enclosure145mm High x 250mm Wide x 50mm Deep
2. Installation
2.1 FIXING INFORMATION
Coach Screw G-ClampHKD Expanding
FittingsM10 Screw with nut & washer
Tek Screw Unistrut Unistrut V Nut / Wedge
CAUTIONCare should be taken when removing any packaging from the equipment. Particular attention must be paid to the roller mechanism where the curtain fabric can be easily damaged by sharp tools.
The headbox is manufactured from galvanised mild-steel sheet. Fixings to the main structure will de-pend on the material used - please refer to site specific drawings. The installer must ensure that the fixings do not protrude into the headbox and are kept clear of the roller location.
It is essential that the headbox is installed straight and level. Failure to do this may result in the fabric “travelling” sideways along the roller tube when retracting. In the worst case this will result in snagging and will compromise the operation of the curtain.
Large headboxes are supplied in sections with joiner pieces to connect the sections together. Each section is marked internally according to its correct location within the box. For fire curtains extra roller support brackets are required when the headbox length is greater than 2.5m. These are required to support the roller as it deflects due to the heat of a fire. They are supplied semi-assembled within the headbox to con-firm their position but completing the assembly can only take place after the rollers have been installed.
Galvanised steel side guides are mandatory on all fire curtains to form a seal between the curtain fabric and the building structure. The guide should be positioned such that the back of the guide is aligned with the end of the headbox and the side of the guide is flush with the side of the headbox. This ensures that the curtain fabric will be positioned centrally within the throat of the guide when the curtain is retracted and the bottom bar will sit flush with the underside of the headbox.
The guides must be installed flush and level and without any twisting. They should be installed on a smooth surface with suitable packing out if required.
Extreme care much be taken when removing the packaging from the roller to ensure no damage to the curtain fabric with sharp tools.
The roller mechanism consists of the roller tube, motor, shaft and fabric. The fabric is pre-wound onto the tube and fixed using a 16mm x 3mm flat mild steel strip. The motor has a cable for connection to the MCC and the shaft has a retractable spindle.
Depending upon the size of the curtain, the roller may be supplied with two motors, one
positioned at each end of the tube.
A 20mm stuffing gland (not supplied) should be used to pass the motor cable through the headbox. The motor positions are pre-marked inside the headbox.
2.2 HEADBOX
CAUTION
2.3 SIDE GUIDES
CAUTION
2.4 ROLLER MECHANISM
NOTE
2. Installation
16
The roller mechanism should be positioned into the headbox and the motor and shaft located onto the factory installed roller brackets. The motor must be correctly orientated so that the cable runs over the top of the locating pin on the bracket. Split pins MUST then be installed through the holes on the side of the bracket and pass through the motor end support and shaft. If these are not in place then it is possible for the roller to disengage from the bracket. The motor cable should be passed through the headbox stuffing gland ensuring that it will not snag on the roller during operation.
Where multiple rollers are used to make up continuous curtains the curtain fabric is overlapped. Overlaps are nominally 200mm for Smoke Curtains and 600mm for Fire Curtains.
When the roller has been installed approximately 100mm of fabric should be unwound from the roller and headbox cover plates fixed into position. Ensure that the fabric is accessible through the slot formed by the cover plate.
If the ends of the motor wires on the flying lead are touching it will not be possible to rotate the
roller without exerting excessive force. This could damage the motor.
CAUTION
CAUTION
The motor control circuit is housed in a metal enclosure. It should be mounted adjacent to the motor position to enable the motor cable to be connected directly into it. If the MCC is installed remote from the headbox with the motor cable exposed then the cable must be protected in fire rated conduit.
A 24v AC supply is supplied to the MCC from the group control panel. In the event of a mains failure a 24v DC supply is provided by the back-up batteries. The MCC supply loop must use suitable cable sizes (see table below). Fire resistant cabling is not necessary as the system is fail-safe, so if the cable is damaged the curtain will automatically descend to its operational position. Voltage drop calculations should be carried out to ensure the required 24v supply is available at each MCC. All wiring should be done by a qualified electrician using the project specific schematics available on request.
Connect wires from active motor terminal in the MCC unit to the roller motors. Blue wire = NEGATIVE, Brown wire = POSITIVE
For Clockwise Curtain Roll When Ascending Connect wires POSITIVE to POSITIVE, NEGATIVE to NEGATIVE
For Anti-Clockwise Curtain Roll When AscendingConnect wires POSITIVE to NEGATIVE, NEGATIVE to POSITIVE
2.5 MOTOR CONTROL CIRCUIT
2.5.1 MCC WIRING INSTRUCTIONS
NEGATIVE wire from MCC
POSITIVEwire from MCC
Active MCC motor terminal
Redundant-MCC motor terminal
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If the MCC is installed remote from the headbox with the motor cable exposed then the cable must be protected in a fire rated conduit.
Ensure that the motor cable is connected into the MOTOR + and – terminals in the MCC and NOT the “SUPPLY IN” Terminals. Incorrect connection will damage the motor.
GCP- MCC LOOP MAX DISTANCES FOR AC / DC RETRACT
- All distances are to the mid point of the loop, with equal load on each side of the loop.- All terminations should be good electrical joints.- All cable should be of good quality and routed properly
Cable size 6 Motors 5 Motors 4 Motors 3 Motors 2 Motors 1 Motor
2.5mm 34m 42m 52m 69m 86m 108m
4.0mm 56m 68m 85m 113m 141m 176m
6.0mm 85m 103m 129m 171m 214m 267m
The GCP power supply relies on natural convection through the case louvers to cool the electronics. For correct operation the Group Control panel must be mounted vertically allowing a free air clearance around the case of at least 50mm. The GCP should be mounted indoors in a dry environment free from water splashes or spillages. All cabling should be routed into the GCP via the 20mm knockouts provided.
The printed circuit boards contained within the Group Control panel contain static sensitive components. Suitable precautions should be taken when handling circuit boards. During connection of any components high voltage test equipment must not be used.
1. Mount the GCP as near as possible to the first curtain motor on the supply loop.2. Remove the mains input fuse and, if available, connect the 230v AC supply to the mains input terminals.3. Remove the 20A output fuse, do not connect the 24v MCC supply loop at this stage.4. Link out the “Fire Alarm” connection. Do not connect the fire alarm signal at this stage.
2.6 GROUP CONROL PANEL (1ST FIX)
CAUTION
CAUTION
Do not use high voltage test equipment on either the GCP or MCC’s.
A 230v 50Hz, permanent, stable and maintained supply is required before further installation can be undertaken. It is recommended that the mains supply to the curtains is designated an ESSENTIAL. To meet the 24 hour standby requirements, the mains supply must be connected to an automatic start standby generator.
1.Pull the fabric fully from the head box2.Clamp the “T” bar to the bottom of the fabric to aid stability.3.Determine the drop height of the curtain and mark at each end.4.Use a chalk line, or laser, to mark the full width of the curtain.5.Hold the “T” bar flat against the chalk line and fix to the fabric using screws. Ensure that the “T” bar is gripping the fabric tightly; a loose fit may result in the fabric tearing.6.Trim of any excess material from under the “T” bar and clip on the polycarbonate cover if used.7.Where multiple rollers are used to make up continuous curtains the curtain fabric should be over-lapped by 200mm - 1000mm depending on the application and drop length. Refer to project specific drawings for details. The bottom bar should be arranged to clamp both fabrics.
1.Turn the key switch to the “Normal” position.2.Re-insert the MCC Output fuse 3.Connect the back-up batteries ensuring the correct polarity. 4.Insert the mains input fuse, the green “Power On” LED will illuminate. 5.Turn the key switch to the “Test” position. The “Fire Alarm Status Normal” LED will be extinguished.6.With the key switch still in the “test” position remove the MCC Output fuse and connect MCC supply cables into the “24v MCC Output” connections.7.Install the MCC Output fuse and turn the key switch to the “Normal” position. The curtains connected to the GCP will now retract.8.Check that all the curtains connected to the GCP are fully retracted.9.Connect the fire alarm contacts. Activate the fire alarm, all the curtains should descend to their lower limit position. 10.Reset the fire alarm and all the curtains will retract to their upper limit. 11. Close and secure all Group Control panels.
If it is possible that the mains power supply could be interrupted after installation but before the curtains are required to be fully operational, they should be wedged or strapped in place inside the headbox to prevent damage to the curtains and back-up batteries.
2.7 MAINS ELECTRICAL SUPPLY
2.8 BOTTOM BAR
2.9 GROUP CONTROL PANEL (2ND FIX)
WARNING
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WARNING
Group Control Panel: Controls and Indicators
LED Indicators
Power on (green) ON - Mains supply is above 85% of noiminalOFF- Mains supply is below 80% of nominal
Trouble low battery (yellow) ON - Battery connected and charge circuit workingFLASHING - Battery charge fault or battery disconnected
Alarm (red) ON- Fire loop open. AlarmFLASHING - Manual Test in operation or 2nd Stage of two stage descent in operation or Delay Drop timer in operationOFF - Fire loop closed. Normal
Delay reset (blue)Multi Function GCP only
FLASHING - Delay reset timer in operation
Override (white)Multi Function GCP only
FLASHING - Override in operation
CPU fault (red) FLASHING - Main CPU failure
Manual Test Key Switch - The key switch on the GCP has 2 positions:
1. Normal: The curtains will be retracted into the normal operational position. They key can be removed from the switch.2. Test: The curtains connected directly to the Group Control Panel & all interlinked curtains descend. The key cannot be removed.
Test key in ‘Normal’ position
Test key in ‘Test’ position
A fusible link is attahced to the bottom bar of the curtain. When its temperature surpassess 72O the curtain is automatically deployed.
A fusible link switch is connected to the GCP to automatically send a signal to the fire alarm circuit when a temperature of 72O is surpassed, triggering the fire alarm.
Enables multiple GCP’s to be connected when more than 6 motors are controlled by one alarm signal, to ensure synchronisation of curtain descent and retraction. Interlinking should be balanced equally
FUSIBLE LINK / FUSIBLE LINK SWITCH
GCP INTERLINKING
Can be used in place of, or in combination with, the main fire alarm signal.
Requires a manual reset button.
2.10 CONTROL OPTIONS & ACCESSORIES
SMOKE / HEAT DETECTOR
2.10.1 GENERAL CONTROL OPTIONS & ACCESSORIES
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TWO STAGE DESCENT & SETTING THE DELAY TIMERSProgrammable timer delay that deploys the curtain in two stages to allow egress before full deployment of the curtain.
First stage deployment time from 0 – 20 seconds followed by a delay of up to 90 seconds before full deployment.
Requires additional brake motors
INDIVIDUAL OVERRIDE INTERFACE (IOI)
Manual override for an individual curtain on a GCP loop that contains multiple curtains. The period of time the curtain remains raised after the IOI is activated can be controlled from 0 -90 seconds.
MANUAL OVERRIDEFacility to temporarily raise all the curtains connected to the GCP after deployment, for emergency egress.
Push buttons can be purchased at an additional cost to control the override - typically a RED button is used to CLOSE the curtain, a GREEN button is used to OPEN the curtain.
2.10.2 STANDARD CONTROL OPTIONS FOR MULTI FUNCTION GCP
OBSTRUCTION SENSORS
AUDIO VISUAL FACILITIES
Can be configured to automatically trigger an alarm if any object is preventing the curtain from full deployment.
Audio Visual Unit that activates to warn that the curtains are descending. Sounder beacons can also be used.
2.10.3 ADDITIONAL CONTROL OPTIONS FOR MULTI FUNCTION GCP
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3.Maintenance & Troubleshooting
The curtains should be tested once per week using the following procedure:
1.Visually inspect the installation. Look for any projection to the walls in the area that the curtain travels, any obstruction beneath the curtain or any alteration to the ceiling slot through which the curtain drops.2.Activate the fire alarm signal and check that the curtain descends to the correct level. Note, there may be several curtains controlled by the same fire alarm signal and they may not all be visible from one posi-tion.3.Reset the fire alarm signal and check that the curtain rewinds fully back into the headbox.4.Inspect the curtains again to make sure that the fabric has rolled up correctly and that the bottom bar has not snagged on any obstacle during retraction. Any faults during rewind may prevent the curtains from operating correctly when required.
Only to be carried out by qualified personnel.
1.Carry out a full Weekly Test Procedure.2.Open the GCP and check the float voltage in the batteries. This should be 27.5v DC with the mains power supply on.3.Turn off the mains supply to the group control panel and check that the curtains remain in position for a period of 4 hours. Should they not do so the battery backup system must be checked and any fault rectified. The backup batteries should be replaced every 5 years.4.Operate the fire alarm and check that the curtains descend in a controlled manner. Inspect the curtain fixings for any sign of damage. This may involve removing the head box cover plates.5.Restore the mains supply and re set the fire alarm. Check that the curtain retracts satisfactorily. Any fault during retraction may prevent correct operation of the curtain when it is required.6.Should the curtain fail to retract correctly, then a further check must be carried out to ensure that the curtain is not being obstructed or deflected in any way. If the curtain continues to retract incorrectly, con-tact the installer or approved service agent.
3.2 ANNUAL MAINTENANCE TESTING
WARNING
3.1 WEEKLY ROUTINE TEST
Fault Conditions
1.Curtain descends without warning
a) Fault on the alarm input to group control panel. Check fire alarm contact is not open circuit.b) Extended mains failure. Restore the mains to the system. This is a common fault when other other trades are working on the site.c) Failure of battery backup. Check the condition of the battery and measure the voltage. During installation the mains power can be disconnected for long periods of time, excessive use of the battery backup may cause premature failure of the cells.d) Fault on wiring from the control panel. Check wiring for continuity. Commonly caused by other trades working in ceiling voids. A broken cable will cause the curtain to descend.e) The test key has been operated.
2. Curtain fails to descend on fire alarm or test key
a) Check the bottom bar or curtain fabric is not obstructed.b) A heavier bottom bar may be required for the curtain to deploy correctly under gravity.DO NOT attempt to manually pull the curtain down as this may cause damage to your curtain.
3. Curtain fails to rise or stops during ascent
a) Check the curtain has not ‘snagged’ on any obstructions.
4. Curtain descends immedi-ately when the mains power fails
a) Possible battery or charger unit failure. Replace the battery as required.
5. 2 stage descent option not working. Curtain failing to stop.
a) Check timer switches are set correctly on GCP.b) Check break connections from GCP-MCC-Motor.
Before consulting the table below, please be sure to check that your curtain is connected to a power supply and that the power supply is turned on.
3.Maintenance & Troubleshooting
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3.3 TROUBLESHOOTING
NOTE
4.Manufacturing Information
When taking measurements for the curtains prior to manufacturing it is essential that due account is taken of how the curtain is to be installed and any finishes that are to be applied to the building structure.
For standard smoke curtains without side guides the measured width dimension can be either the HEADBOX or the FABRIC. The European standard BS EN 12101-1 permits gaps between the building structure and the edge of the curtain depending upon the drop of the curtain. The permitted gaps are detailed below;
For curtains up to and including 2 metres drop – 20mmFor curtains from 2 metres drop and up to 6metres drop – 40mmFor curtains over 6 metres drop – 60mm
The headbox is always wider than the fabric.
The 20mm edge gap should be regarded as the minimum achievable. Where possible on larger curtains the larger gaps should be assumed as the fabric can “travel” along the roller in operation and this can cause snagging between the edge of the fabric and the headbox/roller bracket.
Gaps between the edge of the fabric and the structure can be reduced if the headbox can be extended above any wall/column cladding although some tolerance must be allowed on long drop curtains to ensure that the bottom bar does not contact and damage the wall finish.
The orientation of multiple roller headboxes is dependent upon site constraints and the access requirements to the rollers and Motor Control Circuits for maintenance purposes. Access should always be made available for maintenance. The main access to the roller mechanisms is from below. To facilitate this all standard headbox configurations have removable cover plates fitted to the underside.
The drop height of the curtain can be measured either from the top or underside of the headbox. In all instances it should be stated what the dimension specified refers to.
In multiple roller curtains all rollers must be of an equal length to ensure level deployment and retraction of the curtain. The standard fabric overlap on multiple roller configurations is 200mm.
4.1 SITE CONDITIONS
4.2 STRAIGHT SMOKE CURTAINS WITHOUT SIDE GUIDES
WARNING
4.Manufacturing Information
4.3 ANGLED SMOKE CURTAINS WITHOUT SIDE GUIDESCurtain headboxes can be supplied with mitred angles where the curtain has to follow a specific line. Measurements should be taken following the required line of the curtain fabric including the angle. The number of rollers required and their orientation will be determined by the width of gaps between curtains that are acceptable depending on the drop of the curtain.
Smoke curtains can also be manufactured to fit around circular or irregular shaped voids. Forcircular voids the radius of the void to the curtain line is required. The headbox dimensions can then be calculated to achieve the necessary design intent. For irregular shaped voids it is usually necessary to computer plot the requirements and manufacture accordingly. The headbox orientation must be known to enable the gaps between the curtain fabric to be kept to a minimum.
The width of fire or smoke curtains that include side guides can be measured as the headbox length, which equates to a “back of guide to back of guide dimension”, or alternatively as a “face of guide to face of guide” dimension, where a clear opening width is required. The standard side guide is 100mm deep, so the headbox length is simply 200mm longer than the face of guide to face of guide dimension.
The curtain line is 25mm from the back edge of the headbox, which equates to the centerline of the side guide. If the guides are installed directly onto the face of a wall the curtain line will therefore be 25mm away from the wall.
4.4 FACETTED CURTAINS WITHOUT SIDE GUIDES
4.5 FIRE CURTAINS & SMOKE CURTAINS WITH SIDE GUIDES
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5. Installation Notes
Use these pages to make any additional installation notes you may need for future reference.
5. Installation Notes
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THE LEADING EDGE IN Smoke & Fire CurtainsOffice Tel: 0114 251 4703 Email: [email protected]: www.blesmokeandfirecurtains.com
