Installation - Assa Abloy 840C-50 Manual

Installation

A
B
C
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Assa recommends a clearance of 3 mm between forend of lock case
and strike plate.
Adjust the door seal pressure.
Before fitting the lock to a firesmoke resisting door, the fire certification
should be examined.
A
Mark centerline A (Face plate) when you have decided the position
of the lockcase.
Mark B and C
Use a 20 mm drill bit to get the correct depth for the lockcase, 82 mm
for 50 mm backset and 48 mm for 35 backset. Do not use force to push
the lockcase into the mortice.
Drill the 42 mm hole (B and C) for cylinder and handle through the door.
Mortice the center faceplate into the edge of the door, this has a depth of 3
mm and radius 11.
Make the mortise for the striking plate. Drill 5 holes Ø20 with a depth of
26 mm. Use a chisel to fit the strike plate into the mortise. Use a chisel to
make the outer profile (depth 4 mm for 1487-X). Predrill the four holes
(Ø3 mm).
If the internal door sensor is used. Mount the magnet into the striking
plate. The door sensor position is behind the date mark on the forend.
B
C
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