Peerless Water 30 CME Series - Service Manual - Manual (Page 10)

SERVICE INSTRUCTIONS
DRIVE ASSEMBLY
Remove the valve cover to access the drive assembly.
Disconnect the power source plug (black wire) from the PC board prior to disconnecting the motor or water
meter plugs from the PC board. The motor plug connects to the two-pin jack on the left-hand side of the PC
board. The power source plug connects to the four-pin jack. The four-pin jack is between the two-pin and three-
pin jacks. The water meter plug (gray wire) connects to the three.
The PC board can be removed separately from the drive brack et but it is not recommended. Do not attempt to
remove the display panel from the PC board. Handle the board by the edges. To remove the PC board from the
drive bracket, unplug the power, water meter and motor plugs from the PC board. Lift the middle latch along the
top of the drive bracket while pulling outward on the top of the PC board. The drive bracket has two plastic pins
that fit into the holes on the lower edge of the PC board. Once the PC board is tilted about 45˚ from the drive
bracket it can be lifted off of these pins. To reinstall the PC board, position the lower edge of the PC board so
that the holes in the PC board line up with the plastic pins. Push the top of the PC board towards the valve until
it snaps under the middle latch, weave the power and water meter wires into the holders and reconnect the
motor water meter and power plugs.
The drive bracket must be removed to access the drive cap assembly and pistons or the drive gear cover. It is
not necessary to remove the PC board from the drive bracket to remove the drive bracket. To remove the drive
bracket start by removing the plugs for the power source and the water meter. Unweave the wires from the side
holders. Two tabs on the top of the drive back plate hold the drive bracket in place. Simultaneously lift the two
tabs and gently ease the top of the drive bracket towards your body. The lower edge of the drive bracket has
two notches that rest on the drive back plate. Lift up and outward on the drive bracket to disengage the
notches. To reassemble seat the bottom of the drive bracket so the notches are engaged at the bottom of the
drive back plate. Push the top of the drive bracket towards the two latches. The drive bracket may have to be
lifted slightly to let the threaded piston rod pass through the hole in the drive bracket. Maintain a slight engaging
force on top of the drive bracket while deflecting the bracket slightly to the left by pressing on the side of the
upper right corner. This helps the drive gears mesh with the drive cap assembly. The drive bracket is properly
seated when it snaps under the latches on the drive back plate. If resistance is felt before latching, then
notches are not fully engaged, the piston rod is not in hole, the wires are jammed between the drive bracket
and drive back plate, or the gear is not engaging the drive cap assembly.
To inspect drive gears, the drive gear cover needs to be removed. The drive gear cover is held in place on the
drive bracket by three clips. The largest of the three clips is always orientated 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 motor or 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 orientated 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 ½ turn in either direction before gently pulling on the wire
connections to remove the motor. Pulling directly on the wire without rotating the motor may break the wires off
the motor.
Replace the motor if necessary. Do not lubricate the motor or the gears. When reinstalling the motor gently
turn the motor wile inserting so that the gear on the motor meshes with the gears under the drive gear cover
and the small plastic bulge 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.