7
• Put the centre unit of the new
PAS3621 lock into the door where
the old lock went. If the hole for the
old lock is too small, you may need
to carefully remove some excess
material.
• Line up the new centre unit so that
the cylinder and the square spindle
holes are visible through the holes in
the door face (4a).
• Push the cylinder into place.
• Line up the fixing hole for the cylinder
with the countersunk hole in the
faceplate and fasten it in place with
the new cylinder screw provided.
For the 35mm backset lock use the
short cylinder screw. For the 45mm
backset version, use the long cylinder
screw.
• Insert the old handle spindle through
the lock, leaving an equal amount on
either side of the door. If using the
split spindle set provided insert both
parts into the lock case.
• Slide the handles onto the spindle
inside and out and then carefully
push them together around the
cylinder (4b).
• Secure the handles using the old
screws, ensuring that screws are
inserted from the internal door face.
• Using four of the new 25mm fixing
screws provided, secure the centre
unit into place, making sure the
screws are driven horizontally through
the faceplate. Use the screwholes
shown (5a).
• Now check your PAS3621 Lock
functions correctly:
− Lift the handle and make sure the
hook can move freely.
− Make sure you can turn the key to
operate the deadlock and that when
deadlocked the handle does not
open the lock.
− Turn the key back to unlock the door
and make sure the handles now open
the lock. If using the split spindle set,
only the internal handle will open
the door.
• If the centre hook is not operating
properly you may need to carefully
remove some excess material from
the frame.
• Once you are satisfied that everything
is working properly, close the door
slightly and using a pencil, trace the
datum line from the faceplate onto
the frame. The datum is located in
the centre of the faceplate (5b).
In the centre of the faceplate
(Centre line A).
Step 4: Install the centre unit section of the PAS3621 Lock
Step 5: Check the centre unit of the PAS3621 Lock
13YDWS004-305-ARTWORK-5B-Composite
13YDWS004-305-ARTWORK-5B-
Composite
ISSUE
DESCRIPTION
DATE
5a
4b
5b
• Once the keep is fully aligned, secure
it in place using the new 25mm fixing
screws provided, except the central
fixing screw in the middle of the latch
plate (7).
• If the fixing holes are over a gap in
the frame, use the longer 50mm fixing
screws provided. As a last resort,
omit that screw.
• Position the keep so the datum line at
the centre of the keep is level with the
pencil line on the frame (6).
• Place the keep against the door
frame, ensuring it sits flush with the
frame. Note that the keep is designed
to wrap around the frame edge.
• If the keep sits proud of the frame,
you may have to carefully remove
some of the frame material.
Step 6: Align the PAS3621 Lock centre keep with the frame
Step 7: Align the PAS3621 Lock centre keep with the frame
6
Fixing screws
4a
(Steps
10+11)
X
A
