REPLACE CONTROL BOX
Follow pressurerelief procedurebefore attempting to serviceor repair unit.
1. If trouble shooĦng guide suggests replacing the control box follow the direcĦons below.
2. Remove 4 screws #40 and remove cover plate #70.
3. Unthread transducer from fluid manifold #9.
4. Disconnect motor and cap leads from circuit board. See Diagram "D/E"
5. Remove 2 moun�ng screws #57 from bracket #87. Unthread filter housing for easier access.
6. Remove control box containing circuit board, On/Off switch and potentiometer
7. Replace in reverse order. Note: By removing motor housing will make it easier to install control
box.
Note: Although the Circuit board, tranducer, On/Off switch and potenĦometer are sold individually they are
supplied together with replacement Control Box assembly.
REPLACE CIRCUIT BOARD
Follow pressurerelief procedurebefore attempting to serviceor repair unit.
If trouble shoo�ng guide suggests replacing the Circuit Board follow the directions below.
1. Remove 4 screws #40 and remover cover plate #70.
2. Disconnect Transducer #89 from circuit board. See diagram "D/E" and for below.
3. Disconnect the leads from potenĦometer #82 to circuit board
4. Disconnect the leads from motor # 44 to the circuit board
5. Disconnect lead from On/Off switch #80 to circuit board.
6. Remove 4 screws #74 mounting Circuit Board.
7. Replace in reverse order.
Note: It is reccommended to wear surgical gloves when handling circuit board. They will reduce contaminates
that may come in contact with the circuit board.
REPLACE POTENTIOMETER
Follow pressurerelief procedurebefore attempting to serviceor repair unit.
If trouble shoo�ng guide suggests replacing the potenĦometer follow the directions below.
1. Remove 4 screws #40 and remove cover plate #70.
2. Disconnect the leads from potenĦometer # 82 to circuit board and remove knob #85. Remove
potentiometer # 82.
3. Replace in reverse order.
REPLACE TRANSDUCER
Follow pressurerelief procedurebefore attempting to serviceor repair unit.
If trouble shoo�ng guide suggests replacing the transducer follow the directions below.
4. Remove 4 screws #40 and remove cover plate #70.
5. Unplug the wire from #89 to circuit board.
6. Loosen housing #90 and with needle nose pyers slide traducer from filter manifold.
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