Step 17
Lower the stairs until the top stop rests against the stop bar of the
header
guide frame
(No.5) and the bottom of the stairs are on the floor. The top
tread should be level with the attic floor. Swing the
door panel
(No.15)
to the stairs and slide the
door guide frame
(No.10) up on the strings
and align with the pre-drilled holes in the
door panel
. Secure with
6 x No.10 x 1” pan head screws .
Bottom Stop
Catch
Lock
Position the
catch lock
(No.14) on side of left string with hole centres 304mm
(or less) from the bottom heel of the string. Mark and drill 6mm diameter
hole. Fix with M6 x 30mm bolts + M6 nuts. Repeat as above for the bottom stop
on the right. Position
cable holders
(No.13) to both of the strings with hole centres
533mm (or less) above the holes for the catch lock and 63mm from the back of
the string. Mark and drill 6mm holes and fasten with M6 x 30mm bolts + M6 nuts.
Step 18
Stringing the Cables
On the Spring Drum Assembly, both cables are attached to a shipping fork. The drums are shipped with
tension to keep cables secure.
DO NOT UNHOOK FROM SHIPPING FORKS UNTIL READY TO STRING
Step 19
Start with the
stringer drum
(No.8), the drum furthest from the corner.
The cable will have approximately the correct amount of tension (3 turns).
Carefully remove the
cable
(No.12) from the shipping fork while holding
onto the drum. Refer to step 25 for final adjustment of tension.
WARNING
DO NOT LET CABLE SLIP FROM YOUR HAND AS SUDDEN RELEASE OF TENSION CAN
BREAK OR BACK-WIND THE SPRING AND CABLE TRAVEL MAY CAUSE PERSONAL INJURY
Step 20
Keeping cable ALIGNED with drum, pull cable down and hook to
cable holder
(No.13)
on string. Repeat for left side.
Step 21
Connect the
door cable
(No.11) by carefully removing the cable from the
shipping fork. CAUTION:
door cables
come with tension for shipping purposes
only. Back off tension on
door drum
slowly until all tension is released.
7
