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How is the SGS listed and labeled? What standard(s) is it tested to?
The each of the three Smoke Guard System (SGS) models is listed and labeled by Omega Point Laboratories in accordance with UL 1784. The System is also recognized by the International Code Congress (ICC) Evaluation Service, California State Fire Marshal, and numerous state and local building jurisdictions. The Smoke Guard System significantly exceeds the leakage standards prescribed in IBC 714.2.3, or UBC (1997) Standard 7.210 (Volume 3). See our Listing and Labeling section to view and download these documents. Agency Approvals
What is a "head mount"
The Smoke Guard System (SGS) housing is mounted directly above the elevator doorframe.
What is a "high mount"
The Smoke Guard System (SGS) housing is mounted in ceiling or valence above the top of the elevator doorframe.
What is a "ferrous metal" frame?
A magnet will "stick" or be attracted to a frame constructed of ferrous materials. Iron and steel are examples of ferrous materials. Elevator doorframes must be made of ferrous metal for the SGS Model 400 or Model 600 to be used without auxiliary rails.
What are auxiliary rails? When do you need them?
The Smoke Guard System (SGS) requires a 2-inch wide continuous flat ferrous metal surface to adhere to. This surface must run from the SGS housing to the floor. SGS orders will include auxiliary rails made of 430 Stainless Steel if project elevator doors are not made of ferrous metal OR if the SG Model 200 is specified.
What are "stub" rails?
When the Smoke Guard System (SGS) is installed using existing ferrous metal elevator doorframes in a high mount configuration "stub rails" are used to span the gap. Stub rails are short auxiliary rails that maintain a continuous 2-inch flat metal surface for the SGS to adhere to between the bottom of the housing and the top of the elevator doorframe.
What is a "side mount"? Do all SGS Models offer this option?
A "side mount" configuration allows the Smoke Guard System (SGS) motor to be mounted on the left or right side of the housing. This configuration allows the units to be installed into conditions that require lower clearance from mount height to structure above. The SGS Model 600 is the only unit currently available in this configuration.
Does the SGS interfere in any way with the elevator door operations?
No. The Smoke Guard System (SGS) provides a smoke- and draft-control assembly for the typically fire-rated elevator doorframe. The SGS is a smoke resistant gasket mounted on the face of the elevator doorframe which allows the elevator to function without interfering with the operation elevator door operation.
How does the unit deploy in the event of a fire?
The release mechanism of the Smoke Guard System (SGS) is connected to a UL listed smoke detector (UL Standard 268) required by code at the elevator landing. Upon detection of smoke, the release mechanism activates the SGS. The unit then deploys the SGS screen in front of the elevator openings on the floor where smoke was detected.
What does "return" mean when I am specifying the Smoke Guard System?
We refer to the depth or distance between the wall and the face of the elevator doorframe as a "return". Each of the three Smoke Guard System models has specific returns associated with that system. Be certain to consult your local SGS distributor or SG Customer Service on return sizes for your project.
Does the screen stop if someone or something gets in the way while it deploys?
The releasing mechanism of the Smoke Guard System (SGS) Model 600 is designed to stop if an obstruction is encountered. The screen will rewind into the housing, pause for a few seconds, and then attempt to deploy again. This will continue until the obstruction is removed. The SGS Model 200 and SGS Model 400 are "fail safe secure" devices that are gravity deployed. They stop only when the screen assembly encounters the floor.
Is there a Smoke Guard System model that provides monitoring and supervision capability to provide consistent operational status of the unit?
Yes, the Smoke Guard System (SGS) Model 600 has the ability to continuously check the circuits involved to assure that the screen will release properly.
What kind of warranty is provided by SGC? When does the official warranty period begin?
The SGC provides a one-year warranty for the SGS. The warranty period runs twelve months from the date that the project in which they are installed is turned over to the owner.
What is the recommended maintenance schedule for the SGS?
The Smoke Guard System unit should be exercised once every six months to verify deployment of the screen.
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