Culligan International Water Softener CSM-210

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

Upload a photo of the reassembled Backwash Flow Controller

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.

Upload a photo of the clean-out plug and flow washer area (Figure 108)

Any foreign material lodged in or near the flow washer(s) (Figure 109)?

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.

Is removal of the Backwash Flow Control nipple necessary?

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

Upload a photo of the separated nipple from both the drain line and the Brunermatic valve (Figure 110)

Upload a photo of the inspected and cleaned flow washer(s) (Figure 111 and Figure 112)

Sign off on the Backwash Flow Controller Disassembly

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.

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?