Culligan International Water Softener CSM-450-3

Flow patterns for the regeneration and service cycles are governed by the individual diaphragm valves. These valves close when under pressure and open when pressure is vented. Each is identified by a number cast on the front of the main valve body.

Control tubing connects each numbered valve with the MVP Controller.

NOTE: #17 is always closed on multiple tank systems. * See note below about port conversion.

NOTE: The system provided may utilize an older version of pilot valve and/or Brunermatic Valve port numbering. Evidence of the old numbering scheme is noted by the use of port number 17 on the pilot valve and/or Brunermatic valve.

If the numbering scheme of the pilot valve does not completely match the Brunermatic valve, the following chart should be referred to for conversion purposes.

Upload a photo of the valve number cast on the front of the main valve body

Is the valve open when pressure is vented?

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.

Upload a photo of the clean-out plug before removal

Clean-out plug removed successfully

Upload a photo of the flow washer area (Figure 108)

Flow washer area inspected successfully

Upload a photo of any foreign material lodged in or near the flow washer(s) (Figure 109)

Foreign material removed successfully

NOTE: AVOID USING A SHARP OBJECT WHICH MIGHT CUT OR DAMAGE THE RUBBER FLOW WASHER(S). SHOULD IT NOT BE POSSIBLE TO CLEAR THE CONTROLLER THROUGH THE CLEAN OUT PLUG, REMOVAL OF THE FLOW CONTROL NIPPLE WILL BE REQUIRED TO GAIN BETTER ACCESS TO THE FLOW WASHER AREA.

Upload a photo of the disconnected flexible tubing from the compression fitting

Flexible tubing disconnected successfully

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, no cleaning is required and you can stop the procedure

Remove the flow washer from the nipple

Reinstall the flow washer in the nipple

Sign off on the Backwash Flow Controllers Service

Refer to steps 1 thru 5 under 'Pilot Valve Assembly Removal'

The pilot valve drive motor assembly is held in place with 3 panhead screws. Remove the screws and disconnect the motor leads

NOTE At this point it is also advisable to visually inspect the cam gear and microswitches for any wear indicating the need for replacement

Install the replacement pilot valve drive motor assembly making certain that the gears and assembly are properly engaged. Securely tighten the 3 screws and reconnect the motor leads

Upload a photo of the reconnected motor leads

Reinstall the pilot valve body assembly in the enclosure. Make certain the pilot valve position faces left when viewed from the front of the controller

Reconnect the four quick connect wire leads to the microswitches

Connect the two motor leads to the circuit board

Reconnect all pilot valve tube connections