Volume control damper - VCDM
Page 10
Version 2023-02-14
TPM 167/23
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.
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.
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.
V. TRANSPORTATION AND STORAGE
Logistic terms
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Dampers are delivered on a pallets. As standard, the
dampers are wrapped in plastic foil for protection during
transport and must not be used for long-term storage of
the equipment . Changes in temperature during transport
may cause condensation of water vapour inside the
packaging and thereby condisitions may arise inside the
packaging that are suitable for corrosion of materials used
in the equipment (e.g. white corrosion on zinc-coated
items or mould on calcium silicate). Therefore, it is necess-
ary to remove the transport packaging immediately after
unloading to allow air to circulate around the product.
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The equipment must be stored in clean, dry, well
ventilated and dust-free environment out of direct sun-
light. ensuring protection against moisture and extremes
of temperatures (minumum tempe5°C) the equip-
ment must be protected against mechanical and accid-
ental 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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For unloading and further manipulation with the damper
is necessary to use appropriate tooling (forklifts) due to
damper weight. Dampers are fragile.
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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 blade must be in the "CLOSED" position.
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Dampers are 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% (avoid condensation on the damper
body). Dampers must be protected against impact when
transported and manipulated.