Instruction manual

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REPLACEMENT OF ELECTRICAL COMPONENTS
WARNING: ALWAYS UNPLUG THE ELECTRICAL CORD BEFORE SERVICING MACHINE!
NOTE: ANYTIME THE PRESSURE CONTROL ASSEMBLY, SENSOR, OR BOTH ARE REPLACED,
PERFORM THE CALIBRATIONS.
PRESSURE CONTROL ASSEMBLY
(ELECTRICAL CONTROL BOARD)
SENSOR
POTENTIOMETER
ON-OFF TOGGLE SWITCH
FUSE HOLDER
1. Unplug machine's power cord.
2. Remove four screws heatsink housing.
3. Disconnect all leads from pressure control assembly.
4. Reassemble in reverse order.
1. Remove the four screws, heatsink, and lower the
pressure control assembly.
2. Disconnect swivel from sensor by holding sensor with
7/8” wrench and loosening swivel with 11/16” wrench.
3. Disconnect sensor lead from the board. Carefully pull
sensor lead out of the terminal box and remove sensor.
4. Reassemble in reverse order.
1. Lower pressure control assembly as described above.
2. Disconnect potentiometer lead from pressure control
assembly.
3. Use a 1/16" allen wrench, loosen set screw in the
potentiometer knob and remove knob and spacer.
5. Using a 1/2" wrench or deep socket, remove the nut from
the potentiometer shaft assembly.
5. Pull entire potentiometer assembly out of terminal box.
6. Replace in reverse order.
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.
1. Lower pressure control assembly as described above.
2. Disconnect the two wires on the holder.
3. Remove holder cover and fuse.
4. Use 11/16" wrench to remove the nut from the holder
shaft.
5. Reassemble in reverse order.