This repair procedure takes a minimum of two people to complete. You are going to carefully lower the screen roller assembly onto the floor or work table which will make the repair less difficult. Then transfer the motor drive assembly from the original screen roller tube to the new replacement screen roll. You will then return the new screen roller assembly to the housing. Make sure AC power is off to the screen or the main circuit breaker is “off” before you begin.  

1.  Remove screen roll cover. Remove only three Philip head machine screws from each   

     end of the Cima housing. Lift the front edge of cover upward to release from main   

     housing. It is best to have 2 persons remove this cover. Carefully lift cover off    

     housing and place it at a distance away on the floor.

2.   Remove electrical access cover (Fig 1). Cover is in place with 3 Philip head screws.  

      Disconnect the screen motor from controller by removing the wire twist nuts.

           Fig. 1   Electrical Access – Motor Bracket

3.  Cut the green ground wire coming from the motor. Allow ample wire to remain so that  

     re-attachment of the new incoming motor ground wire with a new wire nut can be  

     easily accomplished.

4.  Remove screen roll assembly from housing. The roller / motor is secured in the motor   

     bracket with a large “C” shaped retaining ring. Remove this ring with a pair of needle  

     nose pliers. The entire screen roll is press fitted into the motor bracket from and idler   

     pin located at the other end of the screen tube. See photo of idler pin in Fig. 2 below.  

  Fig. 2  Idler end pin view - screen roller has been removed

     Back off the large jam nut on the idler pin. Next back out the idler pin to allow the   

     screen roll tube to drop from the motor mount bracket. Once cleared from the motor   

     bracket you can then lower the entire screen roller assembly from the housing. Set the  

     screen roll assembly onto a couple of small blocks placed under each end of the roller   

     tube. This will suspend and protect the screen from contacting the floor or table.                         

5.   Back out the Phillip head side line attachment screw on the motor end of the roller   

      tube. You don’t need to fully remove this screw. Remove the motor drive assembly  

      from the roller tube. Install motor drive assembly into the new replacement roller  

      tube. Re-tighten the Philip head side line screw.  

6.   Reinstall screen roller tube into housing using reverse procedure of the removal 

      steps. Make sure the motor’s limit switches face downward toward the   

      floor when raising the screen roll assembly back into the housing. At this time feed   

      the electrical wires through the end plate and align motor / tube assembly back into  

      mounting bracket. Re-tighten idler pin into tube bearing and secure with jam nut.

7.   Re-connect all electrical wiring with wire nuts (match colors). Don’t forget to also re-  

      connect the new motor’s green ground lead.

8.   Re- install the electrical cover and screen roller cover plate. Turn on AC power or  

      activate the main circuit breaker to “on”.

9.   Carefully operate the screen and make any needed adjustments to the motor’s limit  

      switches. The “Yellow” limit switch adjusts the stopping position of the screen in the

      up direction while the “White” limit switch adjusts the stopping position of the screen

      in the down direction.  Clockwise rotation of these switches will reduce stop settings  

      and a counter-clockwise rotation will increase the stop settings.