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Common Specifications
Sizes
The 142 and 342 doors are always produced to order in standard sizes
up to 8 x 5.5 meters (W x H). Other sizes on request.
Colours
The Crawford doors are available in a wide range of standard colours
and special colours on request.
Due to what WEB-browser that is being used to view this page, colour
changes might occur. For exact colour samples please contact us.
Sealing
Crawford's sealing system consists of top and bottom seals, section
seals and side seals. Adjustable roller holders make it possible
to install the door in such a way that maximum tightness is obtained
between the door and the opening. Draughts, winds, water, sand and
dirt are efficiently excluded.
Material
and surface treatment
The Crawford door sections are designed especially for door use
and are available both in steel and aluminium, catering to different
customer needs.
The
sections are made of 42 mm thick, insulated (freon-free polyurethane)
sandwich panels with a high quality surface treatment and in a variety
of standard colours.
Reinforcement
steel strips are integrated to secure stable and long lasting function
to all attached components.
Manual
or electrical operation
The door is easy to open and close manually as the weight of the
door is balanced by torsion springs. Crawford develop and manufacture
their own electrical door machinery. Complete sets are delivered
comprising motor, cabling and individual control units. When electrical
components are installed, Crawford takes care of the CE-marking.
Double
safety
The electrically operated Crawford 142's with impulse command have
a double safety system. The first system is connected to a pneumatic
edge at the bottom of the door. If the door hits an obstacle an
air-pulse is sent to the control unit and the door stops immediately
and reverses.
When
the door meets the floor a pulse is generated, verifying the function
of the system. If the pulse isn't delivered to the control unit
the door can only be operated by continuously pressing the buttons.
The
second system is connected to the operating motor. If the speed
of the door is increased or decreased, this is registered and the
door will stop.
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The
Crawford 142 is a fully glazed, sectional overhead door, designed
for customers who need optimal daylight inlet and/or exposure of possibilities.
The sectional overhead door glides up under the roof when opened,
allowing free space around the door opening and leaving the door opening
completely free.
The
Crawford 342 is a sectional overhead door, basically for users who
need a robust, well insulated and space
