25 of 38
www.NabcoEntrances.com
GT300-350-8300-8350OpusOverheadConcealedSwingDoorInstallationManual
Rev 5-23-18
P/N C-00175
CHAPTER 14: PERMANENTLY INSTALL THE SADDLE THRESHOLD
1. Secure the Saddle Threshold with fasteners not provided by NABCO.
a. Do not overtighten screws to prevent deforming the Saddle Threshold.
Figure 50 Secure Floor Track to Floor Surface
DN 0753
Center of Saddle Track
#10 x 1-1/2 inch Sheet Metal Screw
Plas c Anchor
CHAPTER 15: INSTALL THE SWING ARM
SECTION 15 .1: Prep the Swing Arm
1. Obtain the Swing Arm. With an 5/16 inch Allen Wrench, remove the Pivot Screw and (3) washers. Set aside.
2. Remove the Set Screw. Loosen the Shoulder Bolt with an 3/16 inch Allen Wrench. Set aside.
Figure 51 Prepare the Swing Arm
DN 1504
Overhead Concealed Arm
Washer
Pivot Screw
Set Screw
Shoulder Bolt
SECTION 15 .2: Set Pre-Load
Power must be turned OFF during the Swing Arm installation.
Ensure the Motor/Operator is plugged into the Controller.
Do not allow the Pin or 1/8 inch Allen Wrench to drop out of the Lovejoy Coupling Access
hole at any time during installation. The Swing Arm will spring back to its original location
and can result in personal injury or damage.
Table 1 Pre-Load
Full Energy
Low Energy
Inswing Panic Breakout (Only)
18 degrees to 144 degrees
18 degrees or no greater than
144 degrees only (do not hit backstop)
Not to exceed 30 pounds of Pressure
Not to exceed 15 pounds of Pressure
Not to exceed 50 pounds of Pressure
18 degrees equals (1) Tooth on the Spline
1. Obtain (1) Pin or 1/8 inch Allen Wrench.
2. Ensure the Spring on the Operator is in the Unwound (0 degree) position.
a. The Motor/Operator is shipped in the Unwound (0 degree) position.
3. Go underneath the Header. Locate the Operator Spindle.
4. Slide the Swing Arm onto the Spindle.
CAUTION
DANGER
DANGER
