Service manual

CULLIGAN HOUSEHOLD & COMMERCIAL CIRCUIT BOARDS
36
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Converting the Culligan Mark 10/Estate 2M Generation I Circuit Board to a Generation II Circuit Board
WARNING: DISCONNECT ALL ELECTRICAL POWER TO THE UNIT BEFORE SERVICING.
Electrical shock hazard – will cause personal injury or death.
• Unplug the electric power cord.
• Remove the control cover and timer mechanism.
• Remove the flow meter harness, reset/regeneration harness and circuit board harness from the circuit
board. Remove the circuit board from the supporting bracket. Remove the supporting bracket from the
control valve backplate.
• Drill two 1/8" diameter holes into the backplate and secure the mounting brackets with the two screws
provided. Refer to Figure 1 for bracket location.
WARNING: TO PREVENT DAMAGE TO THE LEADS, PULL THE LEADS BY GRIPPING THE
CONNECTING TERMINALS ONLY.
• Disconnect the reset/regeneration harness from the reset switch (purple leads) and regeneration button
(brown leads). Disconnect the circuit board harness from the grounding screw (green wire), the black
wire from the terminal block (black lead), the white wire from the terminal block (white lead) and black
wire from the timer program switch (orange lead). Discard the wire harnesses.
Delrin Valve
WARNING: DISCONNECT ALL ELECTRICAL POWER TO THE UNIT BEFORE SERVICING.
Electrical shock hazard – will cause personal injury or death.
• Unplug the electric power cord.
• Remove the control cover and circuit board cover and timer mechanism.
• Remove the flow meter harness, reset/regeneration harness and circuit board harness from the circuit
board. Remove the circuit board from the control housing.
FIG. 1
WARNING: TO PREVENT DAMAGE TO
THE LEADS, PULL THE LEADS BY GRIP-
ING THE CONNECTING TERMINALS ONLY.
• Disconnect the reset/regeneration harness from
the reset switch (purple leads) and regeneration
button (brown leads). Disconnect the circuit
board harness from the grounding screw (green
wire), the black lead from the terminal block, the
white lead from the backwash solenoid and
black wire from the timer backwash switch
(orange lead). Discard both wire harnesses.