Alton Evolution octagonal Instruction Manual page 60

Auto Louvre Installation (Optional)
With the louvre in the
closed position you need
to mark the frame to drill
the 2 holes. Offer the
opener up to the frame
with the plates
washers and slide the
louvre arm into position.
This now gives you the
correct location for the
opener (diagram
Once you have marked
the frame remove the
opener to drill the holes
(2.5mm drill bit).
Now fix the opener to the
frame using the 2 plates
and 2 washers (diagram
142). You should have
either 19mm or 25mm
screws spare from the
greenhouse frame for this.
Once fixed in
attached the louvre arm
to the opener and hold in
place with the plastic pop-
on cap (diagram 143).
Diagram 143
21
and
141).
place
Now slide the cylinder onto
Grub
the shaft attached to the
Screw
body of the opener, secure
this in place with 2 grub
screws (diagram 143).
Finally fit the thumb screw
to the end of the cylinder,
adjust this to get the
desired
ventilation (diagram 144).
Diagram 141
Diagram 142
amount of
60
Diagram 144