
IRRIGAMATIC ASSEMBLING
3.2.2 SENSOR INSTALLATION
•
•
•
•
•
•
Insert the sensor in the arm hole from the magneto
side and fix it with nut and check nut.
Fix the spiralled cable to the roller arm and to the
hose guide by straps or cable holders.
Fix the cable to the irrigator frame, centrally over
the hose guide in such a length as to allow the hose
guide to slide from right to left with the cable still
slightly twisted . Make sure the cable is in such a
position as to avoid any damage during operation.
For heavy duty conditions an optional speed
sensor is available with a Rilsan cable.
Fix the sensor cable to the irrigator frame by
straps or cable holders as far as the electronic
gearcase.
The speed sensor cable bears a ring with
number 2 and should be connected to gearcase
connector 2.
4. INSTALLATION OF THE
ADJUSTING VALVE
4.1 INSTALLATION OF THE BY-PASS
VALVE
4.1.1 BY-PASS VALVE INFORMATION
•
•
•
The by-pass valve is used to send more or less
water to the turbine, thus allowing to adjust the
trolley return speed.
The valve is sized according to the irrigator
characteristics.
The following table shows the size of the valve
generally used according to the irrigation hose
diameter:
irrigation hose by-pass valve
50 - 100 mm 2”
80 - 110 mm 2” ½
100 - 125 mm 3”
130 - 140 mm 4”
When the by-pass valve is fully open, the hose
rewinding speed is zero even when the hose is
partially rewound. For this reason, under specific
conditions, it may be useful to install valves in a
size different from standard ones.
By-pass valves consist of a 100 mm long body with
female gas threading at the ends and a head gasket
for wafer mounting. A butterfly valve with an
elastic rim is mounted inside The motor reduction
gear is fitted on the valve shaft. The motor
reduction gear is controlled by the gearcase for
speed adjustment.
4.1.2 HOW TO MOUNT THE BY-PASS VALVE
Fit the by-pass valve in the by-pass duct of the
turbine in such a position as to prevent the motor
reduction gear from getting upside down to
prevent water seepage . The duct with the by-pass
valve should not be rigid, but at least with a section
of rubber or plastic hose to prevent any damage to
the valve.
Page 03