Step 22
Starting with all the cable wrapped on the drum,pull the cable parallel to the attic floor
and feed cable over
pulley
(No.9) and down to FORK on
door guide frame
(No.10).
Hook cable’s
stop button
under the fork. Repeat for left side. Refer to step 25 for final
adjustment of tension.
Step 23 -
Attaching the Handrail
The
handrail
can be installed on either side of the ladder. The top post should be mounted plumb
to inside of the required string and resting on the second tread from the top using three No.10x 1
½
˝
CSK screws. Attach handrail about 100mm past top post with two 1
½"
screws. Go to the other end and
attach bottom post to inside of string with post resting on the bottom tread and plumb under the
handrail, attach with two 1
½"
screws. Position the other posts at equal intervals on stairs. There are 3
posts for sizes 1 - 4, and 4 posts for sizes 5 - 7. Handrails may be attached further down the stairs
depending on the customer's requirements. Make sure that the horns of the posts are covered by the
handrail. Always use the handrails when walking up and down the stairs.
HANDRAILS ARE FOR BALANCE ONLY AND NOT FOR LOAD BEARING.
Step 24
Raise the stairs as if to be stowed, but still open position on door panel. Make
sure that the
catch lock
(No.14) has engaged the
catch pin
by pulling the stairs
back about 45mm. DO NOT LET THE DOOR SLAM. Slamming the door may cause
damage to the
string guide channel
or tear the
door guide frame
(No.10)
from the door. NB: Refer to Step 25 for final adjustment of tension.
Step 25
: Adjusting Spring Drum Tension
Always work towards using the minimum amount of tension to do the job. On average, one complete
turn of the drum will add or reduce approximately 900g (2lbs) of lift.
Have enough tension for minimum force to slide the stairs up to the stored
position, but not so much that the stairs creep up when resting on the floor.
This could cause accidental tripping. Too little tension may allow the stairs
to feel heavy.
Door Panel Tension
The door should close very slowly without slamming, but with enough tension to hold the door against the stops.
by adding more turns of cable. Take the end of the cable loose from the cable holder and
slowly let it wrap up on the drum. While you still have a length of cable in your hand, hold the drum
firmly and wrap additional cable around the drum as needed. Return cable to holder.
Repeat for other side.
Reduce Tension by unwrapping additional cable. Take the end of the cable loose from the cable holder
Stair Tension
Add Tension
and slowly let it wrap up the drum. Hold the drum firmly and unwrap additional cable from the drum as
needed. Return cable to holder and repeat for other side.
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
WARNING
DO NOT LET CABLE SLIP FROM YOUR HAND SINCE SUDDEN RELEASE OF TENSION CAN
BREAK OR BACK-WIND THE SPRING AND CABLE TRAVEL MAY CAUSE PERSONAL INJURY
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