step 8
step 9
Fitting the strike plate.
Apply the front and back
plates, with the neoprene
NB: The plunger beside the
seals in position, against the
latchbolt deadlocks it to
door, over the protruding
protect against manipulation
ends of the spindle.
or 'shimming'. The strike plate
must be accurately installed
step 10
so that the plunger CANNOT
enter the aperture when the
Fix the two plates together
door is closed, even if it is
using the socket head bolts,
slammed shut.
starting with the top fixing.
Ensure that the two plates
Position the strike plate on
are truly vertical and then
the door frame so that it lines
tighten the bolts using the 'T'
up with the flat of the
shaped Allen key. Do not use
latchbolt, and NOT the
excessive force.
plunger. Mark the positions of
the fixing screws, and draw
step 11
around the aperture of the
strike plate. Chisel out the
Before closing the door,
aperture 15mm deep to
enter the code and ensure
receive the latchbolt. Fix the
that the latchbolt will retract
strike plate to the surface of
when the lever handle is
the frame using only the top
depressed. Now check the
fixing screw. Gently close the
operation of the inside lever
door and check that the
handle. If there is any binding
latchbolt enters the aperture
of the handles or latch then
easily, and is held without too
loosen the bolts slightly and
much 'play'. When satisfied,
reposition the plates slightly
draw around the outline of the
until the correct position is
strike plate, remove it and cut
found, and then re-tighten
a rebate to enable the
the bolts.
faceplate to lie flush with the
surface. Re-fix the strike plate
using both screws.
MODEL 520/525 INSTALLATION INSTRUCTIONS
Model 520/525 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 (fig. 2) 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
C. The square latchbolt
of the latchbolt can be
follower is in 2 parts: the
changed by removing the
inside 'panic function'
three screws holding the
follower will retract the
faceplate to the lockcase
latchbolt and also the
and reversing the latchbolt.
deadbolt when it is
projected. The effect of
B. Put the key in the cylinder
this is to ensure that it is
and insert it centrally into
not possible to accidentally
the lockcase. Fix it in
lock someone in a room
position with the long bolt
because the deadbolt is
through the faceplate. It
projected. The outside
should now be possible to
follower will always retract
project and retract the
the latchbolt whenever the
deadbolt with the key, and
lever handle is depressed
also to retract the latchbolt.
after a correct code is
entered, but it will not
retract the deadbolt.
The hand of the 'panic
function' is determined as
follows: the grub screws
on the split follower facing
the code side must be
removed. This prevents
the outside handle
retracting the deadbolt.
NEVER remove grub
screws from both sides at
the same time.
All door locks should be
installed with a degree of
precision to ensure that all
components are horizontally
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.
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