8 • SCREENGUARD AUTOMATIC SCREEN FILTERS OPERATION INSTALLATION AND MAINTENANCE GUIDE
INSTALLATION
FIGURE 2
INITIAL FILTER INSTALLATION
1. Remove the filter assembly from the wood platform.
2. Connect the filter assembly to the inlet line and outlet line.
3. Connect a drain pipe to the hydraulic flushing valve outlet
opening (at least 2.48” plastic pipe or 2” metal pipe and no
more than 16.4’ long) Confirm that water runs freely out of the
drainpipe.
4. Check that all connections are properly secured.
5. Check that all nuts and bolts on the filter periphery are properly
tightened and secured.
6. Connect the batteries located in the control unit box as
explained in “Initial Operation” (See Figure 3).
INITIAL OPERATION
1. Gradually open the inlet valve (make sure that the outlet valve,
if installed, is open).
2. Check the filter assembly and its connections for leaks. Perform
a flushing cycle manually by pushing the test button located on
the outside of the control box (See Figure 3).
3. Verify that the hydraulic piston fully extends during backflush.
4. Verify that the hydraulic flushing valve closes after 10 seconds.
5. When the filter is clean, verify that the differential pressure
between inlet and outlet does not exceed 1.48 psi.
6. Check that the differential pressure is set to 7 psi in the
controller (see ‘Controller’ section).
FIGURE 3
NETAFIM BACKFLUSH CONTROLLER
1. Refer to the Netafim Backflush Controller’s installation and operation manual for installation instructions. This
can be found on the Netafim USA website (www.netafimusa.com) in the Literature Download area. Also refer to
the installation video located on the Netafim USA YouTube page (www.youtube.com/netafimusa)
2. The manual will provide information on setting the operation parameters, pressure differential settings, flush time
and other required configurations.
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