CODELOCKS CODELOCK 2000 ELECTRONIC Series Installation Instructions Manual page 5

INSTALLATION 4020 & 2020 LOCKS
Model 4020/2020 is a complete locking unit with all the parts necessary for a new installation, or the total
replacement of an existing lock.
IMPORTANT
The mortice lock provided has features which are not found in most other locks and so it is
recommended that you familiarise yourself with them as follows:
A. When necessary the hand of the latchbolt can be
changed by removing the three screws holding
the faceplate to the lock case and reversing the
latchbolt.
B. Put the key in the cylinder and insert it centrally
into the lock case. Fix it in position with the long
bolt through the faceplate. It should now be
possible to project and retract the deadbolt with
the key, and also to retract the latchbolt.
C. The latchbolt follower is in 2 parts. There are 2
set screws in each part. Determine which side of
the lock will be the outside and remove the set
screws from that side. NEVER remove the set
screws from BOTH sides.
The outside follower CANNOT now retract the
dead bolt when it is thrown.
The inside follower WILL retract the deadbolt
when it is thrown.
This safety feature is to ensure that it is not
possible to accidentally lock someone in a room
by throwing the deadbolt from outside.
The purpose of the deadbolt is to deny access to
code users when required.
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2K_4K Installation.indd 8-9
All door locks should be
installed with a degree of
Easy to
precision to ensure that all
reverse
components are horizontally
latchbolt
and vertically accurate in
relation to each other, and
in relation to the door.
Do not install the lock where
it will involve cutting into a
joint between the door stile
and a mid-rail.
2 part follower
Set Screws
Bolt through bottom
fixing for Codelock
22mm bolt throw
Bolt through fixings
for escutcheons
STEP 1
Lightly mark a height line on the edge and both faces
of the door, and the door jamb, to indicate the top of
the lock when fitted. Mark a line down the centre of
the door edge, extending above the height line and
300mm below it.
STEP 2
Hold the template against the edge of the door with
the top in line with the height line, and with the
arrows in line with the 'Centre of Door Edge' line.
Mark the positions of the fixing screws, and the
holes to be drilled for the mortice.
STEP 3
Apply tape to the 16mm drill bit at 90mm from the
tip to act as a depth guide when drilling the mortice
holes. Ensure the drill is level and parallel to the
door face and drill the holes as indicated on the
template. Remove the remaining wood with a chisel
to leave a clean mortice hole which accepts the lock
case without forcing. With the lock in the mortice
make sure that the forend is parallel with the door
edge and mark the outline of the forend plate. Cut
the outline with a Stanley knife to avoid splitting out
when chiselling. Chisel a rebate sufficient to accept
the forend flush with the surface.
STEP 4
Fold the template accurately along the dotted line
and tape it to the door face with the top in line with
the height line, and the fold on the door edge. Mark
the centres of all the holes to be drilled. Remove the
template and repeat the procedure on the other face
of the door.
STEP 5
Drill the holes from both sides of the door to improve
accuracy and to avoid splintering out the door face.
STEP 6
Check that the two set screws have been removed
from the follower on the outside of the door.
DO NOT remove the set screws from both sides of
the door. Install the lock case in the door.
STEP 7
Fit self-adhesive gaskets to the front and back
plates. The gaskets provide friction against the door
so that it is not necessary to over tighten the fixing
bolts to stabilise the lock plates.
STEP 8
Cut one of the fixing bolts to the required length; i.e.
door thickness plus approximately 20mm. If correct
cut another to the same length.
STEP 9
Insert the short spindle into the outside follower of
the lock, and the long spindle into the inside follower,
with the springs facing out. Position the front plate
over the spindle and against the door, passing the
cable through the door.
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