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The framework
is welded and fabricated from rolled hollow section steel
members. These can be braced where necessity demands. Standard
finish on the frames and channels is zinc chromate or red
lead primer.
Standard
cladding is galvanized steel sheeting, fixed in the vertical
plane with rivets. Other claddings are available.
Both leaves
are balanced with counterweights which are in constant suspension.
Movement
is controlled by guide rollers operating in vertical channel
sections, with connecting link arms activating the top leaf.
Door locking
is effected by internal pad bolts to each side unless otherwise
specified.
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Optional Extras ::
Glass
Panels
Doors can be produced either partly glazed to admit light
or to give inspection windows or fully glazed for showrooms
and service stations etc.
Standard
glass is 4mm thick clear float to a maximum individual panel
size of 1830mm by 915mm
Heavier
grade and ornamental glass should be specified only after
consulting the manufacturer, due to the weight and deflection
involved.
Glazing
is affected by means of high security double section aluminium
glazing bead fixed to the tubular steel frame.
Fully
glazed doors are fitted with sheet metal kick plates of a
minimum height of 200mm and increasing in height in accordance
with increases in door width.
Access
Doors
Access doors can be fitted in the lower leaf Standard size
is 700mm wide by 1220mm high and ranging up to 91 5mm by 2000mm
depending on whether leaf size is able to accommodate the
selected size. Normal hinging is to open inwards.
Cladding
Doors can be clad in most sheeting materials and profiles,
but door prices and delivery times vary according to cladding
costs, availability and special fixing methods (if required).
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Power Operation ::
Electric
operation is by a heavy duty cam drive system designed to
fully open or close the door at an approximate rate of 4.5
seconds per meter of opening height.
Power
is provided by a suitable continuously rated 3 phase motor,
closely coupled to a matched reduction gearbox and gearbox
and fitted with a torque limiting safety clutch.
The open
and close cycles are controlled by a finely adjustable limit
switch. Power drive is transmitted through an overhead shaft
of suitable torsion capacity. An internal 3 button control
station is positioned adjacent to doorway.
N.B.415
volt 3 phase power with neutral, terminated at a power isolating
switch where required by the supply authority, to be fitted
adjacent to the side of the doorway opening. (by others)
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Xenac Floataway Garage Door Specification ::
Xenac
Floataway Door is specified thus: A vertically opening one-piece
door fitted with side trundle moving in vertical guide channels
fixed to the building at each side of doorway. The door to
be suitably counterbalanced by connecting the door and counterweights
through the medium of flexible steel cable moving over a pulley
system fitted to the guide channels or building to suit the
individual requirement, The door movement to be controlled
by a single simple link on each side of the door with one
end pivoted on the guide channel or pulley heading so that
in the closed position the door is upright in the Opening
and it then moves to an open, virtually horizontal position,
under the lintel.
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