Operation
11
3.3.2 Backwashing Filters
1.
Place the bypass valve into the bypass mode, refer to
Figure 2
.
2.
Press and hold the
REGEN
button until the motor starts. Press REGEN again and display will read “FILTERING”.
Press
REGEN
again to put the valve into “BACKWASH”. Unplug the transformer so that the valve will not cycle to the
next position. Open the inlet handle of the bypass valve very slightly allowing water to fill the tank slowly in order to
expel air.
3.
When the water is flowing steadily to the drain without the presence of air, slowly open the inlet valve. Restore power
and momentarily press
REGEN
button to advance the control to the “RINSE” position.
4.
The bypass is now in the diagnostic mode (
Figure 3
). There should be a rapid flow to the drain. Unplug transformer to
keep the valve in “RINSE” position. Allow to run until steady, clear, and without air.
5.
Restore power and place bypass valve in the normal operating mode (
Figure 1
) by opening the outlet bypass handle.
Press
REGEN
in sequence until display returns to “TIME”.
3.3.3 CS and BA Series Backwashing Filters
Special precautions must be made when connecting the drain line (hard pipe is recommended - during backwash, high
volumes of water and air rapidly escape causing flexible drain tubing to “whip”). Please attach drain line securely with rigid
piping.
1.
Included with your backwashing filter are two check valves:
•
3/8” John Guest
®
push in type with a screen
•
1" FPT stainless steel check valve
2.
The 3/8” JG valve has a small piece of grey tubing inserted into it which should be inserted into he brine elbow on the
control valve (check valve arrow in direction of air flow into the brine elbow).
3.
The 1" SS valve should be installed on the inlet of the control valve so air cannot travel back through the inlet. Refer
valve flow for flow direction - the arrow goes in the direction of the water flow.
Note:
Plumbing codes may require an expansion tank after water treatment device and water heater for thermal
expansion control.
4.
After installation is complete, fill the unit using the backwash instructions above, let water run to drain slowly and
increase flow until clear. Place the unit in the next cycle which is down brine and let the unit finish on it's own. This will
allow the unit to draw in the air so it can function properly.
Note:
Media is dry and filling water too fast in backwash will result in media plugging the drain and the valve assembly.
C A U T I O N
If water flows too rapidly there will be a loss of media to the drain.
Figure 7 CS/BA
Figure 8 Air Draw Check Valve Assembly (CH4642-WR-A)
Note:
Rigid drain line is highly recommended.
Note:
The 3/8” check valve will have a screen and two small pieces of grey tubing attached.
Screen
Internal
Check Valve
Brine
Elbow on
Valve
Flow
direction