Measurements were made to locate the holes for mounting the 7700 Door Operator onto the doorjamb and the track arm onto the inside face of the door. Six holes were drilled in the doorjamb using a #7 (.201” diameter) bit and the holes were tapped for ¼-20 machine screws. To ensure proper positioning of each hole, they were started using a punch and then a pilot hole prior to the final diameter. Before drilling the #7 holes, the back plate was positioned on the door jamb to check the pilot hole locations. Red Loctite®, a brand of threadlocker, was applied to each screw’s threads to ensure they do not vibrate loose. Two additional mounting screws in the upper portion of the back plate were threaded into the header to insure the door operator was securely mounted and aligned.
The Arrow 7700 track was then installed onto the face of the door. The track was held against the pencil mark and aligned the top with the top of the door. Mounting holes were drilled through the holes in the track. The slide was inserted into the track and then mounted the track using the two supplied drill style screws. Note: Pilot holes were drilled first to ensure the face of the door would not split.
The track arm uses the two mounting screws as stops. The track cover was snapped in place to cover the screws. The secondary arm was attached to the slide using a supplied hex wrench. The screw mounted counterclockwise.
The door was opened roughly 90 degrees and the secondary (track) arm was slid into the main arm. The slider was positioned six inches from the hinge end of the track. The screw was inserted into the threaded opening and secured.
At this time, the handing of the door was electronically set. Dipswitch 1 is for door mounting. ON is for left handed door. OFF is for right handed door. Dipswitch 2 sets the mode of operation as either Push & Go or door closer mode.
The Arrow 7700 operator uses magnets and a sensor to determine the location of the open and closed positions. The two magnets were positioned on the spindle directly in line with the sensor, a black tube that is on the left side of the spindle. The operator will stop opening the door when the open magnet aligns with the sensor. The operator will stop closing the door when the closed magnet is aligned with the sensor.
With the door closed, the closed magnet was placed onto the spindle shaft in alignment with the sensor. The open magnet was placed in alignment with the sensor when the door was at the maximum opening for the application. The magnets can be repositioned as necessary.
Note: The latch position and backcheck position is automatically determined by the position of the open and closed magnets.
Next, the electric strike and door switch were installed. The Arrow 7700 was adjusted after the components were wired and mounted. In the drop ceiling, a junction box had been installed when the building was built with EMT (Electrical Metallic Tubing) solid conduit. There was a junction box located about ten feet away from the 7700 power operator.
To run the wiring, a hole was drilled through the header. A second hole was drilled through the doorjamb at the electrical access hole at the bottom right of the back plate.
To power the door operator a 16/3 solid copper cable was run in 3/8” flexible metal conduit. The “flex” was run from the junction box through the header and the back plate. A 3/8” straight squeeze box connector with a ½” connector attached the conduit to the junction box. A second box connector was attached to the back plate of the power operator. The green wire, the ground, was connected to the grounding screw at the right side of the motor. Important: If the ground wire is not installed, the operator will not function properly. The White and black wires were connected to the COM (neutral) and the HOT terminal strip behind the breaker switch.
Note: As an alternative, an optional power cord approximately 18” long can be connected into the right side of the operator when power is provided from an outlet.
To complete the installation, the Touchless Switch and HES 8000 Series Electric Strike were wired and installed to providing the latch release mechanism for the door operator and a trigger for hands-free egress. Both the electric strike and switch require wire runs. The Arrow 7700 Door Operator provides 24VDC power, up to 1.1 Amps of filtered and regulated voltage output. The Touchless activation switch has a 12 to 24 VAC/VDC voltage requirement. This switch consumes less than 0.0625 Amps. The microwave motion sensor does not require contacting the switch to trigger the door operator. The sensor has a variable adjustment depth from four to 24 inches in order to detect bidirectional motion. The Touchless Switch can be installed into a single or double gang box.
The Detex AO19 is designed for medium to high traffic applications operating doors up to 250 lbs.