
• Check the aperture size against the door set. We
recommend that there is at least a 35mm gap
around the frame to ensure correct installation.
Fitting a composite door with Lockmaster AutoEngage
• Below the door where the frame will sit, place a 5mm
packer on both sides of the door. (See figure one).
• Place the door and frame into the correct position
and open the door leaf to 90°. Place a suitable packer
below the opening edge of the door leaf to bring the
hinge side of the door into a vertical position.
• Using the appropriate fixings, fix the hinge side of the
door set ensuring it is positioned vertically in both
planes. Please note that you should be using 4 or 5
fixings equally placed at approximately 150mm from
the door frame corners.
• Please ensure that there is no bow in both door
planes. Increase or decrease the packing where
necessary (See figure one).
• Bring the door leaf to a closed position and adjust the
packing below the frame on the lock side to achieve a
consistent gap at the top of the door between the leaf
and frame. As a guide align the gearbox latch to the
centre of the latch casting on the centre keep (See
figure two).
• On the lock side, fix the frame into place at the top of
the door frame.
• Bring the door leaf to a nearly closed position and
align the frame at the next fixing point to achieve an
even gap (See figure two), repeat this step at each
fixing point to accommodate for any bow or twist in
the door leaf.
• Once all door fixings are secure, bring the door leaf
to the closed position. Check and adjust the packing
behind the fixings to ensure a consistent 35mm air
gap between the lock and the top of the keeps (See
figure two).
• Finally, pack or point beneath the cill and seal the
door frame to the brickwork.
The incorrect installation of prefabricated door sets can lead to a number of
operation and performance issues. In this guide, we will give you our expert
advice to help to avoid these common issues.
Figure one
Figure Two
5mm
This gap must
be even from
top to bottom