SECTION 1 - SITE PREPARATION AND SET UP.
Page 1-1
Rev 1A – Oct. 2003
1.1
a. Make sure the area where you are working is clean. Sweep out the pit if necessary, and clean the area where
your parts are going to be placed.
b. Check installation drawing for shaft dimensions and guide rail locations.
c. Measure the shaftway along its full length at 24” intervals making sure that all four walls are parallel, square
and plumb, and that the dimensions match the installation drawings.
d. Measure the distance to each landing from the bottom of the pit to the top of the finished floor, the distance
from the pit floor to the finished top floor is the most critical.
e. Measure clearance from the finished top floor to the shaft ceiling, a minimum of 96” is required. If the shaft
ceiling is less than 97” you will have to modify the motor position to the lowest position on the gear reducer if it
is not already done.
f. Ensure that you have 83" (for standard Bi-fold door only) door height clearance from the top of the FINISHED
floor to the door header. If floors are not finished, determine thickness of finished flooring and add to required
door height clearance.
g. Ensure that the 2” x 3” slots are cut out at the base of each door opening for the Bi-fold door tracks.
h. Make sure that the floors at each landing are level, especially where the guide rails are going to be
assembled. Guide rails may have to be shimmed with steel shims if floor is not level.