Step 7. Install the two supplied Phillips Head screws securing the motor assembly to the bottom rail.
Step 8. Connect the MM1 Series module to the motor and connect the wiring to the power supply.
Step 9. Install the exit device onto the door, leaving the end cover and end cap off. To ensure proper operation, do not test the motor’s operation until the exit device has been installed onto the door.
We will discuss testing, adjusting and troubleshooting latch pullback operation after discussing the installation of the Von Duprin Motor Driven Kit.
Von Duprin Installation
The UL Listed Von Duprin Motor Driven Kit, VLP-UL-M-KIT will be installed onto a 99 Series rim panic device. Because this is not a fire rated exit device, we must remove the baseplate assembly, take off the mechanical dogging mechanism, modify the activation shaft and drill a hole in order to attach the motor linkage assembly.
Important: Always install the motor driven kit with the exit device off the door.
Step 1. Remove the exit device from the door.
Step 2. Partially disassemble the exit device in order to remove the baseplate assembly from the rail.
Step 3. Remove dogging mechanism components.
Step 4. Use a hammer and punch to drive out the two rivets securing the dogging mechanism.
Step 5. Press and maintain the bar retraction mechanism in the depressed position. Using a hacksaw, cut off the activating rod at the base.
Step 6. Drill a 9/64” diameter hole ½” from the end of the activating rod to secure the motor linkage assembly. Remove any burrs on the activating rod.
Step 7. Slide the aluminum link onto the end of the activating rod and secure using the provided setscrew.
Step 8. Slide the motor assembly into place directly behind the aluminum link.
Step 9. Rotate nut assembly onto the Acme threaded shaft until the motor assembly mounting holes line up with the holes in the rail.
Step 10. When in position, install the two supplied Phillips Head screws securing the motor assembly to the baseplate assembly.
Step 11. Attach the baseplate assembly onto the center case.
Step 12. Connect the control link pin and retaining ring attaching the bar retraction mechanism to the center case.
Step 13. Slide the baseplate into the rail.
Step 14. Secure the center case to the rail using the two bolts.
Step 15. Attach the pushpad and components.
Step 16. Connect the MM1 Series module to the motor and connect the wiring to a 24 VDC regulated power supply.
Step 17. Install the exit device onto the door, leaving the end cover and end cap off.
Important: When testing and adjusting the motor operation, always have the exit device mounted onto the door.
When mounted onto the door, power the motor driven latch pullback. On the initial fire-up, the motor will retract the pushpad and the latch mechanism. Check to see if the latch is fully retracted. If adjustment is required, the potentiometer is within the rubberized cover of the MM1. The latchbolt travel can be adjusted up to ¼” in or out. Turning clockwise increases the travel. Turning counterclockwise decreases the travel.
Once adjusted, test the exit device three times to be certain the latch mechanism properly operates.
The motor’s on-board self-diagnostics monitor over voltage, under voltage or component malfunction to protect the motor assembly and MM1 module. In addition to the on-board diagnostics, enable fine tuning of the latchbolt travel.
Should troubleshooting be required, count the number of beeps to identify the problem.
- Two beeps indicate over voltage.
- Three beeps indicate under voltage.
- Four beeps indicate a problem with the travel location switch. This switch is in the normally close state. The MM1 series module must see the close state to function. Four beeps occur if there is a faulty switch or tampering where the switch does not close.
- Five beeps indicate the latch pullback mechanism is not able to retract completely. Five beeps occur when the motor has cycled and the switch has not changed state to the open position. This condition may occur when there is tampering to the pushpad, the switch has not changed states, or the aluminum link is not able to travel far enough to depress switch.
- Continual beeps indicate that the pushpad is being obstructed and the mechanism cannot reset. To reset the pushpad, depress pushpad until beeping stops. Releasing the pushpad enables the system to reset and return to the dogged condition.
Command Access Technologies electrifies most commercial manufacturer’s locksets and exit devices for remote control by an access control system or a momentary contact. The company has developed...