Culligan International Water Softener CSM-300-3

Refer to steps 1 thru 3 under 'Pilot Valve Spool Removal & Replacement' on page 71.

Mark and remove all pilot valve tube connections from the pilot valve body.

Disconnect the four quick connect wire leads from the microswitches.

Disconnect the two motor leads from the circuit board. See Figure 115 and Figure 116.

Remove the 2 large panhead screws with nuts located at the bottom of the enclosure that secure the pilot valve body assembly. The pilot body assembly will now separate from the enclosure.

Refer to 'Pilot Valve Assembly Replacement' on page 73 for reinstallation instructions.

Sign off on the pilot valve assembly removal

Close the manual inlet isolation valve, the manual outlet isolation valve, the manual brine valve, and any external source of pressure to the pilot valve assembly

Depressurize the system following the instructions on page 65

Disconnect the power to the MVP controller

Manually rotate the position dial on the pilot valve clockwise to position #1 to relieve pressure

Allow the flow of water to drain to stop

Remove the panhead retaining screw located at the bottom front portion of the pilot valve body

Pull the pilot valve spool assembly from the pilot valve body

Using a screw driver, gently pry the retaining clip off of the pilot valve spool

LIGHTLY lubricate all seals on the replacement pilot valve spool with Dow Corning #11 silicone grease

Warning: This service requires trained personnel with PPE!

Is the Backwash Flow Controller plugged with scale, rust, or other foreign material?

If the Backwash Flow Controller is not plugged, report the status to the maintenance team and stop the procedure

Was the cleaning of the Backwash Flow Controller successful?

Enter the backwash flow rate after cleaning

Sign off on the Backwash Flow Controllers Service

Warning: This procedure requires trained personnel with PPE!

Is the water softener in daily use on a potable water supply?

If the water supply contains iron, regenerate the softener before sanitizing to remove iron from the resin.

CAUTION! HAZARD FROM TOXIC FUMES! CHLORINE BLEACH AND COMMON IRON CONTROL CHEMICALS MAY GENERATE TOXIC FUMES WHEN MIXED.

IF THE UNIT USES CULLIGAN SOFNER-GARD® OR OTHER COMPOUNDS CONTAINING SODIUM HYDROSULFITE, SODIUM BISULFITE, OR ANY OTHER REDUCING AGENT, DISCONNECT THE DEVICE FEEDING THE CHEMICAL(S) AND MANUALLY REGENERATE THE UNIT BEFORE SANITIZING.

DO NOT USE THIS PROCEDURE IF THE SOFTENER SALT CONTAINS IRON CONTROL ADDITIVES.

Did you remove the brine tank cover?

Enter the amount of common household bleach (5.25% sodium hypochlorite) for each cubic foot of resin in the tank.

Backwash Flow Control nipple replaced with compression fitting downstream of the flow washer

Flexible tubing connected to the compression fitting in the side of the Backwash Flow Control nipple

Clean-out plug inserted and tightened