8
• Unscrew two steel angle irons with length adjustment holes (1) and
screw them onto ceiling bracket (2) as shown.
• Dismantle connecting rod (1):
Pull out retainer and remove bolt (3).
Installing the operator
If the distance between the ceiling and the lower edge of the
C-rail is greater than 245 mm, then extend the suspension
bracket (with perforated steel strip).
• Determine door’s highest up-position (DHP):
Open door and measure smallest clearance (min. 35 mm) between
top edge of door and ceiling. The clearance between the highest
up-position and the bottom edge of the C-rails must be a min. of
5 mm and it may be a max. of 65 mm; the push arm must be at a
max. angle of 30°(for up-and-over doors) (see Fig. 17)!
Please note that this distance might be smaller, if the door
handle is located at the centre of the door. Ensure that the door
can move freely.
7
Operator pre-installation
• Remove the operator from its packaging.
Dispose of the packaging correctly in accordance with local
requirements.
When mounting C-rails, ensure that the uncoated inside is
located opposite the chain.
• Slot two C-rails (1) into the connecting element (2) and push together
as far as they will go.
• Hook tensioner (1) in chain (2) and turn it 90°. Insert connecting
element (6) and push tensioner (1) through it. Place plain washer (5)
and spring (4) onto the tensioning bolt (3) and screw it into the
tensioner (1).
• Tighten chain until the mark (arrow) is reached.
• Mount bracket (2) with screw (1) and nut (3) on the connecting
element (4).
4
