Fire damper - FDML
Page 30
Version 2023-10-31
TPM 130/17
VI. MATERIAL, FINISHING
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Damper casings are made from galvanized sheet metal without further surface treatment.
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Cover grilles are made of sheet metal and coated with RAL 9010 burning varnish. Requests for other colours must be
discussed in advance with the manufacturer.
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Damper blades are made from fire resistant asbestos free boards made of mineral fibres.
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The cover housing for the actuator is covered with fire resistant asbestos free boards made of mineral fibres.
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Closing mechanism and fasteners are galvanized.
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According to the customer's requirements, dampers can be made of stainless steel material.
Specifications for stainless-steel design:
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Class A2 – Food-grade stainless steel (AISI 304 – EN 1.4301)
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Class A4 – Chemistry-grade stainless steel (AISI 316, 316L – EN 1.4401, EN 1.4404)
The following components, including the fasteners, are made from stainless steel:
1)
Damper casing and all components permanently attached
2)
Blades holders including pins, metal parts of blades
3)
Control components inside the damper
Damper blades are made from boards of homogeneous material Promatect-H
Thermoelectric activation device BAT is modified for stainless-steel variant of the dampers; standard galvanised screws are
replaced with stainless-steel M4 screws of corresponding class. Damper casing has stainless-steel riveting M4 nuts.
Plastic, rubber and silicon components, sealants, foaming tapes, glass-ceramic seals, housings, brass bearings of the blades,
actuators, and end switches are identical for all material variants of the dampers.
Some fasteners and components are only available in one class of stainless steel; the type will be used in all stainless-steel
variants.
Cover grilles are always made of common steel sheet metal with a burning varnish.
The damper blades in the variant for chemical environments (Class A4) are always treated with a coating of chemically
resistant Promat SR.
Any other requirements for the design will be considered atypical and will be addressed on an individual basis.
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Dampers are delivered in bulk. As standard, the dampers
are wrapped in plastic foil for protection during transport
and must not be used for long-term storage. Temperature
changes during transport can cause condensation of
water inside the packaging and thereby cause corrosion of
materials used in the dampers (e.g. white corrosion on
zinc-coated items or mould on calcium silicate).
Therefore, it is necessary to remove the transport
packaging immediately after unloading to allow air to
circulate around the product.
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The dampers must be stored in clean, dry, well ventilated
and dust-free environment out of direct sunlight. Ensure
protection against moisture and extreme temperatures
(minumum temperature +5°C). The dampers must be
protected against mechanical and accidental damage
prior to installation.
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Another required packaging system should be approved
and agreed by manufacturer. Packaging material is not
returnable in case that another packaging system
(material) is required and used and it is not included into
final price of damper.
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Dampers are transported by box freight vehicles without
direct weather impact, there must not occur any shocks
and ambient temperature must not exceed +50°C.
Dampers must be protected against impact when
transported and manipulated. During transportation, the
damper blades must be in the "CLOSED" position.
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Dampers must be stored indoor in environment without
any aggressive vapours, gases or dust. Indoor
temperature must be in the range from -30°C to +50°C
and maximum relative humidity 95%.
VII. TRANSPORTATION, STORAGE AND WARRANTY
Logistic terms
