Power supply cable
Fig.1-2-5
Supply power to the switch box by means of the ignition key, using the power supply cable
provided Ca (plug to socket Pa).
If contact 15/54 (utilities) of the ignition key is able to withstand a continuous load of 10A, make the
connections shown in fig.2 .
Otherwise, fit a relay as shown in fig.1. Protect the line with a 10A fuse (fig.1-2). Use cables with gauge
of at least 1.5 mm
.
2
To avoid the risk of short circuits, do not connect the power supply cable before completing
the installation. Check that the voltage of the tractor battery is the same as that of the contreol
panel (12 ±10%Vdc).
R
E
D
+
B
L
A
C
K
-
R
E
L
Fig.1
OPERATION (Fig.4)
Switch SP :
control switch for regulating valve. Hold the switch lever on (+) to increase or (-) to
decrease the pressure of the plumbing system.
Switch SG :
*Control switch for main control valve. Switch up for setting ON; switch down for
setting OFF.
**Control switch for unloading control valve. Switch up for setting OFF; switch down
for setting ON.
Switch S1÷S5 : ON/OFF switch for electric section valves.
Switch up for setting ON; switch down for setting OFF.
** RD:
When the lever of switch SG is lowered, the section valves are automatically closed even if their
respective switches are in ON position. For use with controI units with dump valve.
* RI:
Opening and closing of the section valves is independent of the position of SG switch. For use
with control units with master valve.
TROUbLESHOOTING
PRObLEM
The leds illuminate but it is not
possible to operate the valves.
The leds are olt and the valves
are not working.
The switches are on OFF but the
valves are open.
(RI) The master valve works in
the operate direction.
1
0
A
F
U
S
E
+
E
1
2
V
B
A
1
5
5 /
4
Connectors not connected,
or unplugged
Thermal protection burnt out.
No power supply.
Reversed power supply cable
Voltage on box reversed.
The intermediate cable is
not being used.
Use & Instruction Manual
-
R
E
D
+
T
T
E
R
Y
B
L
A
C
K
-
Fig.2
CAUSE
Connect the connectors in the
correct way.
- Disconnect, then connect the
main cable to reset the thermal
protection.
- For "Compact control panels":
replace fuse.
Check the power supply.
Check the power supply connection.
Check the power supply cable
connection, on box.
Use the intermediate cable.
ENG
1
5
5 /
4
1
0
A
F
U
S
E
REMEDY
5