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DRIVE ASSEMBLY CONTINUED
To inspect drive gears, the drive gear cover needs to be removed. The drive gear is held in place on the drive bracket by three clips.
The largest of the three clips is always oriented to the bottom of the drive bracket. Before trying to remove the drive gear cover, the
drive bracket must be removed from the drive back plate. The drive gear cover can be removed from the drive bracket without removing
the PC board. Simultaneously, push in and down on the large clip at the bottom and the clip on the left-hand side of the drive bracket
behind the PC board. Keep your other fingers behind the drive gear cover so the drive gears do not drop on the ground.
Replace broken or damaged drive gears. Do not lubricate any of the gears. Avoid getting any foreign matter on the reflective
coating because dirt or oils may interfere with pulse counting.
The drive gear cover only fits on one way, with the large clip oriented towards the bottom. If all three clips are outside of the gear shroud
on the drive bracket the drive gear cover slips easily into place.
The drive bracket does not need to be removed from the drive plate if the motor needs to be removed. To remove the motor,
disconnect the power and motor plugs from the jacks on the PC board. Move the spring clip loop to the right and hold. Rotate the motor
at least a ¼ turn in either direction before gently pulling on the wire connectors to remove the motor. Pulling directly on the wire without
rotating the motor may break the wires off the motor.
Replace the motor is necessary. Do not lubricate the motor or the gears. When reinstalling the motor gently turn the motor while insert
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ing so that the gear on the motor meshes with the gears under the drive gear cover and the small plastic plug engages one of the slots
on the motor housing. Reconnect the motor plug to the two pronged jack on the lower left-hand side of the PC board. If the motor will
not easily engage with the drive gear when reinstalling, lift and slightly rotate motor before reinserting.
Replace the valve cover. After completing any valve maintenance, press and hold
SET HOUR
and ▼ buttons for 5 seconds or unplug
power source jack (black wire) from the circuit board and plug back in. This resets the electronics and establishes the
filtering position. Reset the time of day.
DRIVE CAP ASSEMBLY, MAIN PISTON AND REGENERANT PISTON:
The drive assembly must be removed to access the drive cap assembly. The drive cap assembly must be removed to access the
piston(s). The drive cap assembly is threaded into the control valve body and seals the o-ring. To remove the drive cap assembly use
the optional maintenance wrench or insert a ¼” to ½” flat bladed screwdriver into one the slots around the top 2” of the drive cap as
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sembly so it engages the notches molded into the drive back plate around the top 2” of the piston cavity (see drawing
below). The notches are visible through the holes. Lever the screwdriver so the drive cap assembly turns counter clockwise. Once loos
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ened unscrew the drive cap assembly by hand and pull straight out.
The drive cap assembly contains the drive cap, the main drive gear, drive cap spline, piston rod and various other parts that should not
be disassembled in the field. The only replaceable part on the drive cap assembly is the o-ring. Attached to the drive cap assembly is
the main piston and, if a regenerant is used, a regenerant piston.
The regenerant piston (the small diameter one behind the main piston) is removed from the main piston by unsnapping it from its latch.
Chemically clean in dilute sodium bisulfite or vinegar or replace the regenerant piston if needed. To remove the main piston fully extend
the piston rod and then unsnap the main piston from its latch by pressing on the side with the number. Chemically clean in diluted so
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dium bisulfite or vinegar or replace the main piston.
Reattach the main piston to the drive cap assembly. Reattach the regenerant piston (if needed) to the main piston. Do not lubricate the
piston rod, main piston or regenerant piston. Lubricant will adversely affect the red or clear lip seals. Reinsert the drive cap assembly
and piston into the spacer stack assembly and hand tighten the drive cap assembly. Continue to tighten the drive cap assembly using
the maintenance wrench or screwdriver as a ratchet until the black o-ring on the spacer stack assembly is no longer visible through the
drain port. Excessive force can break the notches molded into the drive back plate. Make certain the main drive gear still turns freely.
The exact position of the piston is not important as long as the main drive gear turns freely.
Reattach the drive assembly to the control valve and connect all plugs. After completing any valve maintenance, press and hold
SET
HOUR
and ▼ buttons for 5 seconds or unplug power source jack (black wire) from the circuit board and plug back in. This resets the
electronics and establishes the filtering position. Reset the time of day.
