SERIES 904 - MULTI-SECTIONS VERTICAL DOORS
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5 SECTIONS DOOR SHOWN |
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The heavy duty series 904 four (4) blades and more doors of
simple construction are used in manufacturing plants, any types
of warehouses, in areas where the depth is restricted by a
travelling crane, in areas where there is a lot of heat, cold or
dust or still, in areas where operation cycles are very
frequent.
Using pulleys, sprockets and counterweights as a mechanism,
these doors eliminate, for any practical purpose, maintenance on
the traditional hardware parts.
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The doors are FOUR (4) BLADES AND MORE VERTICAL LIFT DOORS
SERIES 904 as manufactured by Dorion Doors Inc., 2987, boul.
Perrot, Île Perrot, Quebec, Canada J7V 8P4.
All doors are manufactured as per our shop drawings and
standardized specifications described below.
All doors are manufactured as per CSA W47.1 certification from
the Canadian Welding Bureau.
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The frame is made of square or rectangular steel HSS from 50 mm
thick minimum to the maximum thickness necessary with a minimum
deflection of 1/240 up to 1/560 in the horizontal plane
independently of the maximum width and maximum height of the
blades. The inside and outside covering sheets of 1.6 mm thick
are satin coat steel as per norm ASTM ZF275 or in galvanized
steel as per norm ASTM Z275.
The covering sheets are fastened to the frame with self-taping
steel screws with neoprene or steel blind rivets. Weather
shields are provided on the covering sheets on both sides to
prevent water infiltration.
The frame of the door receives one coat of 26 microns epoxy
primer before being covered by the covering sheets. The back of
the covering sheets also receives one coat of 26 microns epoxy
primer on its full length.
The series 904 doors are manufactured to withstand an overload
due to the wind of 1 kPa with less than 1/240 minimum up to
1/560 deflection in the horizontal plane.
Each blade must be provided with two lift points to connect to
the counterbalancing mechanism.
The engineering welding procedures as well as the welds needed
to manufacture the doors must be certified in accordance with
the norm CSA W47.1 of the Canadian Welding Bureau.
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The doors are insulated with a fire retardant polyurethane foam
injected at a density of 49 kg/meter³ (3.6 lbs/foot³) as per
norm ASTM C-518 for thermal resistance and ASTM E-84 for flame
spread at <25 and smoke at <450, C.F.C. free.
The insulation thickness is determined by the required RSI
factor.
The outside parts of the counterweight box and of the guides of
each door are insulated with the same product and of the same
process as the blades. The exposed insulated parts are protected
with a 1.6 mm thick steel sheet.
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The guide is made of 50 mm x 50 mm x 3.2 mm thick steel angles,
grade W44, welded to a minimum 6.4 mm thick steel plate to guide
the blades and with horizontal tighteners spaced 1.25 centre to
centre. The assembly is provided at the bottom with a minimum
6.4 mm thick steel plate allowed for floor anchoring and must be
solidly fastened to the adjacent jamb or pillar of the door.
The guiding mechanism must be provided with adjustable block
stops.
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The counterweight box must be manufactured with a 6.4 mm steel
plate provided with a cage to guide and incorporate the
counterweight. The guides are made of 50 mm x 50 mm x 3.2 mm
thick grade 44W steel angles-irons welded to the steel plate. A
removable steel plate of desired height covers the bottom part
of the counterweight box to permit access to the counterweight
without problem. The front and the sides of the counterweight
box are covered on its full height of opening with a steel plate
1.6 mm thick. The counterweight box must also be provided with
horizontal tighteners spaced no more than 1.25 m centre to
centre. The assembly is provided with a minimum 6.4 mm thick,
grade 44W, steel plate for floor anchoring and must be solidly
braced to the adjacent member of the door.
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The counterweight consists of commercial quality steel plates,
equivalent to the weight of the blades, welded together. The top
of the counterweight is provided with steel ties, solidly
welded, to fasten the necessary steel cables and the roller
chains for a smooth mechanical working.
In the areas where there is a magnetic field, the extremities of
the counterweight are provided, on the four faces, with teflon
plates to facilitate their work into the guides.
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COUNTERBALANCING MECHANISM:
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The counterbalancing mechanism, which consists of a series of
cables and one counterweight, is linked to the only
counterweight and must be supplied with two anti-friction
mechanisms located on the top part of the guiding mechanism.
These mechanisms must permit to link each blade to the
counterweight by the intermediary of two cables. The cables are
attached with wire rope clips.
Each mechanism must consist of machined steel and steel
sprockets mounted on a minimum 38 mm diameter cold roll shaft
with key way with a 7:1 safety factor. The diameter of the
pulleys on the guide side and on the counterweight box side is
determined by the width, the height and the weight of each blade
of the door. The size and their number must be sufficient to
support their weight as per the established safety standards.
The shafts must rest on pillow blocks. The pulleys must be
locked in place by the appropriate steel collars.
The driving blade must be linked to its counterweight by two
minimum #60 roller chains and two galvanized steel aircraft
cables, construction 7 x 19, of the appropriate diameter. The
roller chains are joined by links and half links. The total
safety factor per blade is 7:1.
The shaft of counterbalancing mechanism mounted on the
counterweight box is linked to the shaft of the electric
operator by minimum #60 driving chain.
All the elements must be arranged so that the service charges
are taken by the counterweight box and the guiding mechanism.
The top of the guide and of the counterweight box must be joined
together by a steel reinforcing bar to ensure the alignment and
rigidity of the assembly.
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The lintel is made of a steel plate minimum 6.4 mm thick.
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In order to prevent the door from falling abruptly in the event
of the counterbalancing mechanism breakdown, the driving blade
must be equipped with a safety locking device. This device must
be maintained in the open position by the tension between the
roller chain that links the driving blade to its counterweight.
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The lintel, the top part of the driving blade and the bottom and
top parts of the other blades must be provided with neoprene
weatherstrip interlocking one into the other to make the
horizontal joints watertight when the door is closed.
The guides must be provided with an aluminum channel holding a
flexible santoprene weatherstrip in order to ensure the
watertightness of the lateral joints of the door.
The bottom part of the driving blade must be provided with a
pneumatic safety edge model AGDS serving as a weatherstrip as
well as safety.
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The door blades, the counterweight boxes and the guides are
painted on both sides with one coat of 26 microns epoxy primer
and one coat of 48 microns acrylic/polyurethane finish paint to
obtain a certified thickness of 74 microns.
The colours are at the architect's choice.
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The doors are working with an electric operator which you will
find all the details on our web site under operators, jackshaft,
DGH type, 1 HP minimum, Nema 1, Nemar 4 or Nema 12.
Furthermore, separate control panels with programmable logic
controller; red and green traffic lights; infra-red photocells,
etc. are also available and you can find the specifications on
our web site under electric accessories.
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Available sizes: up to 36 m wide x 15 m high.
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RESPONSIBILITY AND REQUIREMENTS:
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The manufacturer is responsible for the conception and
manufacturing of the supplied equipments.
The manufacturer must be certified ISO 9001 : 2000.
All mechanic and electric shop drawings related to the
conception for this project must be sealed and signed by an
engineer member in good standing with the Ordre des Ingénieurs
du Québec.
The door manufacturer must have a minimum of five years
experience in manufacturing industrial doors of the required
model.
The welding procedures; the engineering welding standards and
the welders, in workshops as well as on the jobsites, must have
been approved and qualified by the Canadian Welding Bureau in
accordance with the norm CSA W47.1.
The manufacturer must submit its letter of validation with the
Canadian Welding Bureau.
The welding procedures in workshops and on the jobsites must be
submitted to the project manager before manufacturing.
The manufacturer/installer must have a liability insurance of
2,000,000$ minimum.
The manufacturer/installer must be registered and must hold a
licence in good standing with the Régie du bâtiment du Québec.
The manufacturer/installer must be registered with the
Commission de la construction du Québec (CCQ) as well as with
the Commission de la santé et de la sécurité du travail (CSST).
The manufacturer/installer must be in order with these
organisms.
The installers of the manufacturer must have all permits or
qualification cards as govern by the Commission de la
Construction du Québec.
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MAINTENANCE AND OPERATION:
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The contractor must provide operation and service manuals.
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Manufacturing specifications may change without prior
notice.
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