SANDSTORM
™
SINGLE-/DOUBLE-CHAMBER USER MANUAL
15
MAINTENANCE
8.
Make sure that the filling port and its gasket are clear of any remaining gravel particles and clos the
filling port.
9.
Turn on the water and start irrigation.
10.
As soon as the system is pressurized and stable, start a manual backwashing cycle by pressing the
key (the icon will appear on the display) and check that the backwashing happens in sequence
according to your backwash controller setup (to manually terminate a backwashing cycle in progress,
press the same key).
11.
Readjust the backwash flow-control valve:
• If a manual backwash flow-control valve is installed, throttle the valve to reduce the flow until the
media stops running out.
• If a hydraulic backwash flow-control valve is installed, the valve is factory pre-set to the required
flow rate.
In the rare case that the backwash flow-control valve requires fine-tuning:
a.
Release the pilot lock-nut.
b.
Gently rotate the pilot calibration bolt counterclockwise with a wrench to reduce the flow until the
media stops running out.
c.
Retighten the pilot lock-nut.
For further assistance, contact your local Netafim™ representative.
Replacing the batteries in the BackFlush controller
For controllers powered by 4 x 1.5v D-size batteries (6v DC)
ATTENTION
• Match the poles to the markings inside the battery housing.
• Always replace the whole set of 4 batteries at once.
1.
Remove the upper cover.
2.
Pull out the battery housing
.
3.
Remove the used batteries from the battery
housing
.
4.
Insert new batteries.
5.
Push the battery housing back in.
6.
Put the upper cover back in place.
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