Maintenance
3A1184G
17
Replacement of Electrical Components
NOTE:
Anytime the pressure control assembly, sensor,
or both are replaced, perform the calibrations.
Pressure Control Assembly (Electrical
Control Board)
1.
Unplug machine’s power cord.
2.
Remove eight screws and lower the pressure con-
trol assembly.
3.
Disconnect all leads from pressure control assem-
bly.
4.
Reassemble in reverse order.
Sensor
1.
Remove the screws and lower the pressure control
assembly.
2.
Disconnect sensor lead from the board.
3.
Unscrew sensor from pressure control assembly
using a 7/8” wrench.
4.
Reassemble in reverse order. Use PTFE tape on the
sensor threads prior to reinstalling it into the pres-
sure control assembly.
Potentiometer
1.
Lower pressure control assembly as described
above.
2.
Disconnect potentiometer lead from pressure con-
trol assembly.
3.
Use a 1/16” allen wrench, loosen set screw in the
poteniometer knob and remove knob and spacer.
4.
Using a 1/2” wrench or deep socket, remove the nut
from the potentiometer shaft assembly.
5.
Pull entire potentiometer assembly out of the frame.
6.
Replace in reverse order.
On-Off Toggle Switch
1.
Lower the pressure control assembly as described
above.
2.
Disconnect the two wires on the toggle switch.
3.
Use a 9/16” wrench to loosen the nut on the toggle
switch shaft.
4.
Reassemble in reverse order.
Liquid Crystal Display (LCD)
1.
Ensure the power switch is OFF and the machine is
unplugged.
2.
Detach the pressure control assembly from the
frame by unscrewing the eight screws.
3.
Disconnect the LCD lead from the pressure control
assembly.
4.
Separate the LCD assembly from the frame by
undoing the two screws.
5.
Remove and replace LCD Display.
6.
Reassemble in reverse order.
NOTE:
Do not over tighten the screw and nuts. This can
warp the LCD and damage it.
Always unplug the electrical cord before servicing the
machine.
Summary of Contents for AllPro Mustang 11000 Series B
Page 25: ...Parts 3A1184G 25 Notes...
