24
TROUBLE
CAUSE
REMEDY
Pressure gauge reading higher
than actual pressure
Pressure gauge malfunctioning
• Change pressure gauge.
Squashed gasket inside pressure
gauge is partially obstructing passage
• Slightly loosen pressure gauge.
Passages across valve and nozzle
undersized, leading to significant
pressure drop
• Choose section valve tubes and hose
tails of correct size.
Pressure transducer reading
higher than actual pressure
Transducer malfunctioning
• Change data settings in computer; if
problem persists, change transducer.
Passages across valve and nozzle
undersized, leading to significant
pressure drop
• Choose section valve tubes and hose
tails of correct size.
One or more sections not closing
correctly
Section valve motor not working
• Check electric connection.
• Have gearmotor inspected at the
nearest Service Centre.
Section valve plug gasket worn out
• Change worn gaskets.
Chemical residue on gasket and seat
of section valve hose tail
• Clean parts with suitable detergent
as indicated in cap. 6 - Maintenance /
diagnostics / repairs.
7
TECHNICAL DATA
Control units described in this manual deliver product
in proportion to the engine speed:
the proportional valve installed on these units safeguards uniform distribution of spraying over the
surface unit (litres/ hectare or GPA), even with variations of + 20% in the progress speed provided
the same gear is maintained.
7.1
Correspondence between valve parts and maximum valve pressure
TYPE OF VALVE
KNOB COLOR
PRESSURE
BAR
PSI
MAXIMUM PRESSURE
463-465 SERIES
Black
10
145
Green
20
290
Light blue
30
435
Orange
40
580
8
DISPOSAL AT THE END OF SERVICE
Dispose of the system in compliance with the established legislation in the country of use.
