Installation, Operation & Maintenance Manual
Control Panels for Automatic Self-Cleaning Strainers
Model 596 and Model 2596
IOM
Controls 04/2020
REV B.
Page
3
of 9
Eaton Filtration LLC,
44 Apple
Street, Tinton Falls,
NJ
07724 www.eaton.com/filtration
Phone:
732-212-4700
Size
Backwash
Chamber Drain
10”
to
16”
1”
¾”
18”
to
30”
3”
2”
36
6”
3”
STRAINER MODE OF OPERATION
CONTINUOUS BACKWASH
Several valves are required for various applications. Ball valves
of the proper size, end connection, material, and pressure
rating are recommended for these services.
Manually operated valves are best suited for
“b
low-down
”
and
“
chamber drain
”
service. They may also be used for
continuous backwash service.
For timed cycle backwash, the valve should be operated by an
electric or pneumatic valve actuator.
Larger size strainers require both a
“b
low-down drain
”
and a
“
chamber drain
”
for the body.
The table below lists the service functions and sizes of valves
for standard strainers.
Model 596
Size
Backwash
Chamber Drain
2”,
3
”
,
4”
1”
¾”
6”,
8”
1 ½
”
¾”
Model 2596
PNEUMATIC ACTUATORS
A double-acting piston design that uses a clean air supply
of 40-125 psi pressure, powers the actuator properly.
Using an electric signal, a solenoid pilot valve controls the
air supply to the actuator.
Most actuators have pipe thread connections (NPT)
located so that the solenoid valves may be mounted with
minimal tubing runs.
Customer must run wiring and conduit from the control
panel terminals to the solenoid valve (see Fig 2).
Piping (or tubing) is required from the solenoid valve to
the air supply system (this is customer scope of supply).
The solenoid pilot valve must be piped to the actuator so
that the backwash valve will close when there is no
electric power to the solenoid.
SAMPLE OPERATION USING 3-
WAY SOLENOID VALVE
Power On: Air supply from the pilot valve to actuator is
“
Open
”
but vent is
“
Closed
.”
Power Off: Air supply to actuator is
“
Closed
.”
Vent connection
is
“
Open
.”
ELECTRIC ACTUATORS
The required actuator size depends on the backwash
valve torque requirements. The motors are
“s
haded pole
”
or
“
split capacito
r”
type.
115 Vac, 10 Hz actuator motors are standard, other
voltages are available.
The standard actuators require simple wiring from the
control panel to the actuator (see Fig 2).
