User manual

Repair and Replacement Procedures
ProMaster 2500 User Manual 7-15
Replacing the Beam
Head Rotation Motor
Follow the steps below to replace the beam head rotation motor.
1. Turn off the 2500, remove the power cord, and disconnect the motor
cable.
2. Remove the two 3/32-inch set screws in the shaft pulley of the
rotation motor.
3. Remove the single 3/32-inch hex mounting screw in the beam head
pulley.
4. Loosen the four motor mounting screws using a 1/16-inch hex
wrench.
5. Pull up the beam head pulley and remove the beam rotation belt.
6. Remove the motor drive pulley.
7. Use a 1/16-inch hex wrench to remove the four motor mounting
screws and remove the beam head rotation motor.
8. Install the new motor, but do not tighten the four hex mounting
screws.
9. Install the motor shaft pulley, beam head pulley, and beam rotation
belt.
10. Adjust the belt tension by moving the motor closer or farther from
the beam head.
11. When you have sufficient belt tension, tighten the four hex mounting
screws.
Replacing the Beam
Traverse Motor
Follow the steps below to replace the beam traverse motor.
1. Turn off the 2500 and remove the power cord.
2. Lift the main plate of the 2500 and disconnect the ribbon cable
connector from J-7 on the controller board.
3. Disconnect the traverse motor power cable from J-11.
4. Look through the two holes in the top of the beam traverse motor’s
mounting block (see Figure 7-16) while you manually rotate the lead
screw until the heads of the flex coupler set screws are visible
through the holes.
5. Use a 7/64-inch hex wrench to loosen the set screw on the right side
of the flex coupler.
Note: This set screw connects the flex coupler to the beam traverse motor shaft.
6. Use a 5/32-inch hex wrench to remove the four beam traverse motor
mounting screws and remove the beam traverse motor.
7. Install the new motor and re-assemble all of the disconnected
components.