Culligan International Water Softener CSM-600-2

Warning: This procedure requires trained personnel with PPE!

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

Is the unit using Culligan Sofner-Gard or other compounds containing sodium hydrosulfite, sodium bisulfite, or any other reducing agent?

If yes, disconnect the device feeding the chemical(s) and manually regenerate the unit before sanitizing.

Does the softener salt contain iron control additives?

If yes, do not use this procedure.

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. Also 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

NOTE The cam gear is designed to only be installed one way onto the pilot valve spool.

The flat portion of the pilot valve spool must align with the flat side of the cam gear’s pilot receptacle. When properly positioned, the cam will snap into place on the pilot valve spool.

Replace the pilot drive motor assembly making certain that the gears are properly engaged. Securely tighten the three screws.

When installing the replacement pilot valve body to the bottom of the MVP enclosure, make certain the word POSITION faces the left side when viewed from the front. Securely tighten the two panhead machine screws with nuts removed in step 4 of the 'Pilot Valve Assembly Removal' on page 72.

Reconnect the four quick connect wire leads to the appropriate microswitches and the motor leads to the primary circuit board.

Reconnect the pilot valve tubing to the pilot valve body.

NOTE Refer to the appropriate tubing diagram located in this manual.

Slowly open the manual inlet isolation valve.

Slowly manually rotate the position dial clockwise back to position #1 allowing water to flow to the drain. Bleed the air from valves 1 and 4 of the Brunermatic valve. Allow Backwash to continue for 10 minutes.

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 as per 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. Grasp the position dial and 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 and assemble the position dial onto the pilot valve spool assembly

Insert the new pilot valve spool assembly into the pilot valve body. Make sure that the #1 on the position dial aligns with the pilot valve body position indicator arrow

Replace the small panhead retaining screw to secure the pilot valve spool assembly into the pilot valve body. Open the manual inlet isolation valve

Complete shut down procedure is as follows:

1. Disconnect the electrical power to the MVP controller.

2. Make certain that the lines you shut off are for the system you are performing service on.

a. Open by-pass valve if one is available.

b. Close the inlet isolation valve.

c. Close the outlet isolation valve.

d. Close the manual brine valve (If installed).

e. Close the separate source isolation valve if one is available.

f. Any external source of pressure to the pilot valve.