Pentair Slide Backwash Valve - Manual (Page 6)

Page 6
Section 4. Backwash Mode
1. Turn off the system pump(s).
WARNING
To prevent equipment damage and possible injury,
the pump must be turned off and the pressure relief
valve on top of the filter must be opened. Wait for all
air to evacuate the system
2. Release all pressure from the system at the main
fi lter.
3. (DE Filters) Ensure that the Slide Valve handle is
fully extended (handle pulled all the way up). See
Figure 7.
(Sand Filters) Ensure that the Slide Valve handle
is fully depressed (handle and piston pushed all
the way down). Turn the handle until the stainless
steel pin on the piston locks into the position
bracket.
4. Turn on the system pump(s) and run the system
until the waste water runs clean.
5. Turn off the system pump(s).
6. Return the Slide Valve handle to the normal
operating position (see Section 3).
7. Turn on system pump(s) and check for normal
water fl ow.
Figure 7. Handle Positions (SVLV2 shown)
Caution - Handle Positions for
Backwash Only
DE Filter
Handle fully
extended
(pulled up) Sand Filter
Handle fully depressed
(pushed down)
Section 5. Servicing
Lid Union Nut
Figure 8. Loosen Lid Union Nut
4. Grab the Slide Valve handle and pull the shaft
assembly out of the valve (see Figure 9).
WARNING
To prevent equipment damage and possible injury,
the pump must be turned off and the pressure relief
valve on top of the filter must be opened. Wait for all
air to evacuate the system
1. Turn off the system pump(s).
2. Release all pressure from the system at the main
fi lter.
3. Loosen the lid union nut (see Figure 8).