Step 12
Fix the two plates together using the fixingbolts, starting with the top fixing. Ensure that the
two plates are truly vertical and then tighten the bolts. Do not use excessive force.
Step 13
Before closing the door, enter the code and ensure that the latchbolt will retract when the
lever handle is depressed. Now check the operation of the inside lever handle. If there is any
binding of the handles or latch then loosen the bolts slightly and reposition the plates slightly
until the correct position is found, and then re-tighten the bolts.
Model CL420/CL425 Installation
Instructions
Model CL420/CL425 is a complete locking unit with all the parts necessary for a new
installation, or the total replacement of an existing lock.
IMPORTANTThe mortice lock provided (fig. 1) 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, loosen the screw holding the latchbolt in place, reverse
the latchbolt, and tighten the screw back up, ensuring that the latchbolt is central.
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 square latchbolt follower is in 2 parts: the inside ‘Panic Function’ follower will retract
the latchbolt and also the deadbolt when it is projected. The effect of this is to ensure that it
is not possible to accidentally lock someone in a room because the deadbolt is projected. The
outside follower will always retract the latchbolt whenever the lever handle is depressed 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.
NEVERremove 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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Step 1
Lightly mark a height line on the edge and both faces of the door, and the door jamb, to