Netafim Screenguard 2 REGULAR Installation, Operation & Maintenance Instructions

Screenguard™
SEMI-AUTO "T"
SCREEN FILTERS
Installation, Operation & Maintenance Instructions
Netafim 2" and 3" Semi-Automatic plastic "T" screen filters are design to operate as both primary
and secondary filter unit' s dependent on the applications. The filters are available with multiple
screen area and connection type to address any application needs. The filter body is made from
durable plastic material for extra strength and longevity.
INSTALLATION
Use Teflon tape on filter body inlet &
outlet threads –
do not use pipe dope
Ensure correct water flow direction
(as per arrow marking on filter)
Flanged configuration includes
anti rotation mechanism to allow
installing at any required angle.
When using flange - align filter
position (angle) before tightening the
bolts
DO NOT ROTATE FILTER AFTER
BOLTS ARE IN PLACE
Assemble drain valve on the filter
cover (O-ring included)
Place rotation handle on the shaft,
align holes and insert
the plastic pin
Ensure adequate space for
operation and maintenance of the
filter (See dimensional drawings)
ROUTINE INSPECTION
The semi-automatic filter includes
automatic clogging indicator (F)
When pressure difference between
filter inlet and outlet reaches 0.5 Bar,
the red indicator (R) pops out and
becomes visible
This is an indication that the filter
should
be cleaned
After cleaning, pressure difference
returns to normal value, and the
red indicator (R) retreats back
automatically
SUPERIOR IRRIGATION PROTECTION
BY THE WORLD'S EXPERTS
SEMI-AUTOMATIC
CLEANING OPERATION
Open drain valve (D)
Rotate handle (H) slowly all the way
out and then back in
NOTE – while working with low
quality water or low-pressure
application, it is advised to perform
the cleaning operation while the
downstream valve is closed
Close drain valve (D)
DISMANTLING THE FILTER
Turn off the water to the filter
Open the drain valve (D) to release
any remaining pressure
Open filter body clamp (B) and
remove filter cover (C) from filter
body (A)
Pull out screen elements (E) from
filter body (A)
ASSEMBLY
Ensure the screen element (E) is
clean and that both O-rings are in
place
Rotate the suction mechanism
clockwise all the way in
Push screen element (E) into filter
body (A)
Place filter cover (C), make sure
the suction pipe is inside the lower
bushing
Push the filter cover (C) to place
Lock with filter body clamp (B) using
the clamp lever
Close drain valve (D)
Open the water gradually, to avoid
water hammers
CLEANING & MAINTENANCE
Use pressure hose to thoroughly
clean screen elements
If needed use soft nylon brush to
help with cleaning to screen
Do not use any abrasive tools
Inspect nozzle cleaning assembly
and make sure all nozzles are intact
H
A
B
D
WARNINGS
Do not open the filter under
pressure
During winter season, drain the filter
to avoid freezing damage
Do not backflow water
through the filter
Want to know more?
products_solutions@netafim.com
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