Barnstead International MIRAK 725 Series, Operation Manual And Parts List, Page: 22 / 36

3. Note the position of the blue stripe running
along the bottom of the cable connected to the
board.
4. Disconnect the cable from the board.
5. Loosen the nuts and remove board from front
panel.
6. Replace board, reconnecting cable as noted in
step 3. Correct positioning of blue stripe on
cable is important for proper functioning.
7. Replace the bottom and secure it with screws.
Replacing the Motor
1. Unplug unit, turn unit upside down and remove
screws from bottom.
2. Open unit. Note position and color of wires and
cables connected to the logic and display
boards.
3. Remove logic board as described above.
4. Remove the wires and cable from the power
board. (It is not necessary to remove the power
board from the metal plate it is mounted to.)
5. Remove the display board as described above.
6. Remove encoder wheel from motor.
7. Remove the screws holding the top plate onto
the case. (4 screws on 7" x 7" models, 6 screws
on 12" x 12" models.) Remove the clamp hold-
ing the element lead down.
8. Flip top plate over.
9. Note the distance of the magnet assembly from
the baffle plate.
10. Remove the magnet assembly.
22
M
AINTENANCE AND
S
ERVICING