Page 19
Version 2022-12-20
SEDS-L - Smoke extraction damper - single
TPM 158/22
III. MATERIAL, FINISHING
Material
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Damper casing and damper blade are made of galvanized sheet metal without any other surface finish.
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Fasteners are galvanized.
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According to the customer's requirements, damper can be made of stainless material.
Specifications for stainless-steel models – classification of stainless steel:
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Class A2 – Food-grade stainless steel (AISI 304 – EN 17240)
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Class A4 – Chemistry-grade stainless steel (AISI 316, 316L – EN 17346, 17349)
The respective stainless steel is the material for all components present or accessing the damper interior; components
outside the damper body are typically from galvanised sheet metal (fasteners for mounting the actuator).
The following components, including the fasteners, are made from stainless steel at all times:
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Damper body and all components permanently attached
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Blade´s holders, including pins, metal parts of blade
Plastic, rubber and silicon components, sealants, foaming bands, glass-ceramic seals, housings, brass bearings of the blade,
actuators, and end switches are identical for all material variants of the dampers.
Some fasteners and components are available in one class of stainless steel; the type will be used in all stainless-steel
variants.
Any other requirements for the design shall be considered atypical and shall be addressed on an individual basis.
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The actuator cover is made of fire-resistant material (fire protection board).
IV. INSPECTION, TESTING
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The appliance is constructed and preset by the manufacturer, its operation is dependent on proper installation and
adjustment.
