Automatic Fire Protective Smoke Curtain
- 3 Hour Fire Integrity Curtain incorporating C41000WK fabric
- 3 Hour integrity (E) to 1000 °C
- Provision of “Insulating Zone” for means of escape requirements
- Multiple egress options
Smoke Curtain
DSI-SD240 Fire Protective Smoke Curtain
DSI-SD240 Fire protective Smoke Curtains are totally gravity fail safe and incorporate the latest in electronic technology. As a result DSI-SD240 is one of the most advanced, yet cost effective systems on the market.
Limit switch control has been replaced with current-limiting systems to determine the upper position of the curtain. The 24v motor will retract the curtain until the bottom bar pulls against the underside of the head box. The current drawn by the motor will begin to rise, this will be detected by the motor control circuit and the supply will be stepped back to a holding voltage of approximately 4 volts.
Upon receipt of a fire or test signal the holding voltage will be removed to the motor. The weight of the bottom bar will force the motor windings to return generating a back EMF. This facility ensures a controlled descent of the curtain even in the event of total power failure.
This method of operation should be used to deploy the system at all times. A curtain that is powered down under normal test conditions from either mains power or the battery supply is only proving that it can deploy when powered. This does not confirm the ability to fail safe.
The curtain fabric has a “Leinwand” weave which offers a more even surface and allows a tighter interlacing of the fabric edges. The tensile strength of “Leinwand” weave fabric is 10% greater than other fabrics due to the constant thread tension. The extra strength helps the curtain to keep its shape whilst retracting onto the roller.
Features for DSI-SD240:
- 3 Hour Fire Integrity Curtain incorporating C41000WK fabric
- 3 Hour integrity (E) to 1000 °C
- Provision of “Insulating Zone” for means of escape requirements
- Increased resistance to the irradiance of heat (W)
- Compliance with impact resistance standards
- Provision of a protected means of escape
- Multiple egress options
Compliant with
UL 10 D | Fire protective Smoke Curtains 3 Hour |
UL 10 D | S Designation |
UL 10 C | Without Hose Stream Test |
UL 10 B | Without Hose Stream Test |
Control System
- Group Control Panel
- Split Drop Delay
- Delayed Descent
- Motor Control Cards
Info & Specs
Standard Smoke Curtain incorporating C41000WK fabric
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About Door Systems
Our passion is to build a strong company
with great people and innovative ideas to
achieve extraordinary results.
Door Systems is the only company to provide code compliant integrated fire doors and fire protection smoke curtains that offer superior aesthetics, high performance and up front cost savings while bringing long term value to the customer.
Door Systems
Southern California
2413 S. Broadway St.
Santa Ana, Ca 92707
Northern California
2355 Paragon Dr., Ste G
San Jose, Ca 95131
714-258-7100 Local & International
866-534-3667 Toll Free US Only
California Lic# 865455
Nevada Lic# 0061043