Water Meter Maintenance
The metering device used with the 960 demand controls may require simple maintenance. In rare instances, the turbine wheel of the water meter can collect small particles of oxidized iron, eventually preventing the wheel from turning.
1.Shut off the water supply or put the bypass valve(s) into the bypass position.
2.Relieve pressure by opening the Backwash Drain Valve (the seventh back from the control) with a screwdriver (Figure 9).
3.Loosen and remove the pipe/tube adapters or 1265 bypass from the inlet and outlet of the valve body.
4.Using a
5.Carefully remove the turbine wheel from the housing. Use a toothbrush to lightly scrub the iron off the magnet. Iron buildup on the surfaces can be removed by soaking the wheel in a mild sodium hydrosulfite (such as RoVer*) solution for a few minutes. Flush thoroughly with water.
*RoVer is a trademark of Hach Chemical Company.
6.Carefully reinstall the turbine wheel into the turbine cage housing. Make sure that the shaft of the wheel seats into the bearing of the cage. Reassemble the turbine cage and check that the wheel rotates freely.
7.Reinstall the turbine cage into the outlet of the valve.
8.Reinstall the pipe/tube adapters or 1265 bypass to the inlet and outlet of the valve.
9.Turn on the water supply or put the bypass valve(s) into the service position and purge the air out of the system.
To check for proper meter operation, open a downstream faucet and observe the water flow indication, blinking colon, on the control display.
Removing the Control
Complete the following steps to remove the 960 ProSoft control for servicing:
1.Unplug the
2.Shut off the water supply or put the bypass valve(s) into bypass position.
3.Remove the rear cover by depressing the two tabs provided on the cover, Figure 11. Lift the front of the cover and remove to expose the valve body.
Tab
Figure 11
4.Relieve system pressure by opening the Backwash Drain Valve (the seventh valve back from the control) with a screwdriver, Figure 12.
Figure 12
5.To remove the camshaft or to reinstall it, the arrow on the rear of the cam shaft must be pointing at the line on the rear “hoop” of the top plate. This occurs when the cycle indicator is rotated to the refill position. Press down on the back of the camshaft to disengage it from the rear “hoop” of the top plate, Figure 13.
Slide the camshaft back to disengage it from the timer, Figure 14.
Figure 13
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