| STANDARD SPECIFICATION Panels
The door panels are constructed from internal steel channels
with flat galvanised facing sheets on both sides. The panels are infilled with a high density insulation material
and have an overall thickness of 63mm. Tracks
The door panels are hung on four wheel trolley bearing hangers
which incorporate the panel hinges and run in a galvanised
top track. An auxiliary top track is attached to allow the
panels to fold correctly. Brass rollers connected to the bottom hinges run in a steel
channel bottom track which is set far alignment within a
200x100mm chase before final grouting into position. Door Arrangements
The doors are normally face fixed to the inside of the opening
but can be arranged to mount directly between jambs. They
can be supplied as a single door (bunching to one side) or
biparting. Thermal Insulation
The
door panels provide a "u" value
of 0.47w/m2/deg.C. OPERATION The doors are electrically operated as standard using
a totally enclosed 3 phase motor gearbox mounted on the top
track with open/close/stop push buttons adjacent to the opening
at the slam side. Disconnection or emergency manual operation
is provided at low level adjacent to the motor.
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