M Ounting The Bottom Pivot; I Nstallation Of Door Leaf - Besam ASSA ABLOY Swingmaster 900 Service And Installation Manual

M ounting the bottom pivot

5 3 B
Prepare and install the bottom pivot (reference section titled, "Finding the Pivot Height"). The
bottom pivot can be installed in two ways:
Alt 1: With the base plate/bearing placed directly on the floor. The distance 3.75" (95 mm) to the
pivot centerline is obtained if the base plate is placed against the vertical jamb/wall.
Alt 2: With the bearing installed directly into the threshold. Make sure that the centerline of the
bottom pivot and the centerline of the drive shaft are aligned.
Tip
Use plumb bob.

I nstallation of Door Leaf

5 4 B
The door leaf must be prepared for the drive arm and bottom pivot per instructions on page 20.
Note!
Step 5 below is critical. The door must be allowed to self-adjust to the bottom pivot.
1. Adjust the bottom pivot using instructions found in section titled, "Finding the Pivot Height" –
1st page).
Fit the drive arm to the operator drive shaft in line with the closed position for the door
2.
(0-position), and temporarily fix it with the drive arm set screw. Give a constant impulse,
let the arm open to 90° and lock it in this position with the spindle lock screw.
Caution
The OHC arm without the door will open and close with great force, keep hands and face away from
arm during these steps.
3. With the drive arm still attached to the operator shaft and the bottom pivot set in place, slide the
door in from the hinge and over the bottom pivot and guide the drive arm into the top web of the
door.
Move the door in until the screw holes in the door line up with the holes in the drive arm
4.
and install the four screws through the arm to connect it to the top of the door.
Loosen the drive arm set screw and allow the arm and door to settle against the bottom
5.
pivot.
Check that the door has 1/8" (3 mm) maximum clearance at top and does not interfere
6.
with the bottom pivot plate. Remove the door and adjust the bottom pivot if necessary.
Tighten the four screws in the drive arm/door and then re-tighten the set screw in the
7.
drive arm.
Release the spindle lock screw and the constant impulse and allow the door to close.
8.
Besam Entrance Solutions 24 1/31/2008