FIRE RATED SHUTTER
Our Delta Technology Fire Rated Shutter (DTFRS) is tested up to 4 hours of fire rating integrity. Under normal circumstances DTFRS can be used as a conventional security shutter. In the case of a fire outbreak, DTFRS is able to isolate and compartmentalize the fire.
Tested to SS489:2015 & BS EN1634-1
Up to 4 Hours of Fire Integrity
Single span up to 14.1m x 7m in dimension
A fail safe mechanism that includes a fusible Link that melts at 69°C causing the shutter to slide down and close under gravity
Manually operated by hand chain
Automatically operated by control box
Upon activation, the alarm will release the brake, thus allowing the shutter to close under gravity
Intelligent System (IS) has a built-in Brake Re-engagement Device that stops the shutter once it touches the ground
The shutter curtain is formed by interlocking custom designed continuous galvalume mild steel slats of thickness 1mm and a slat pitch of 75mm or 100mm.
The guide rails shall be electrogalvanized formed steel ‘U’ shaped channel with a thickness of 2mm. The overall nominal dimensions of each guide is 70mm (width) x 80mm (depth).
The bottom bar shall be constructed of mild steel inverted ‘T’ shaped bar (40mm x 40mm x 4.5mm angle bars). It is the last slat which is situated at the bottom of the entire curtain and it is used to maintain the door rigidity.
It shall only consist of a single heavy-duty steel pipe, forming only a single barrel. The drive assembly is made up of steel circular plates fitted to the steel solid shaft round bar on one end and a circular plate with tri-legged slot on the other end.
The entire frame shall be constructed with 35mm x 35mm angle bar forming a truss frame. The shutter hood’s dimensions shall be between 365mm to 600mm in height and depth. The driven sprocket shall be attached onto the end plate with a protruding tri-legged holder for the barrel. The frame shall be cladded with a colourbond steel sheet that has a minimum thickness of 0.8mm so as to conceal the shaft assembly.
Each fire shutter shall be equipped with only 1 motorized operator. The shutter operator is equipped with built-in limit switch, built-in thermal protector, built-in brake release system, manual hand chain, and one unit of 3-ways push button (Up, Stop, Down) switch with cylinder lock integrated in a stainless steel cover. The limit switch shall ensure the shutter stops automatically at desired levels. In the event of power failure, the shutter can be operated manually by pulling the hand chain.
The power source shall be single phase 230V x 13amp or 3-Phase 415V x 20amp, 50Hz each depending on the size of the shutter.
Motorized roller shutter can be operated by using the push button, which is located approximately 1.5 meters above floor level without counter balance system.
The fusible link is a mechanical mechanism which shall activate the shutter to close and isolate fire when the fuse with a melting point of 69-degree Celsius melts. It shall descend the shutter down via gravity and gradually stopped upon closing for safety reasons.