Hydraulic / Electric System CORTO 8100 F/T TIC
3-8 10/04
1.2.7 Lowering the left
CORTO
Actuate rocker switch 5.
Earth is connected to relay 16 on terminal 85 and to solenoid valve 75.
Relay 16 connects earth to relay 15 and to the 4/3 way solenoid valve
50A.
Relay 15 cuts the current supply to the lock-up valve units 89 and 99. Via
the 2/2 way solenoid valve and the 4/3 way solenoid valve, oil flows out o
hydraulic cylinder 100 – the left mower unit is lowered.
1.2.8 Raising the right
CORTO
Actuate rocker switch 6.
Earth is also connected to relay 17 on terminal 85 and to solenoid valve
76.
Relay 17 connects earth to relay 15 and to the 4/3 way solenoid valve
50B.
Relay 15 cuts the current supply to the lock-up valve units 89 and 99.
Via the 2/2 way solenoid valve and the 4/3 way solenoid valve, oil flows
into hydraulic cylinder 90 – the right mower unit is raised.
1.2.9 Lowering the right
CORTO
Actuate rocker switch 6.
Earth is connected to relay 16 on terminal 85 and to solenoid valve 76.
Relay 16 connects earth to relay 15 and to the 4/3 way solenoid valve
50A.
Relay 15 cuts the current supply to the lock-up valve units 89 and 99.
Via the 2/2 way solenoid valve and the 4/3 way solenoid valve, oil flows
out of hydraulic cylinder 90 – the right mower unit is lowered.
1.2.10 Folding CORTO to
working position
Actuate rocker switch 4.
Earth is connected to relay 16 on terminal 85 and to solenoid valves 72
and 73.
Relay 16 connects earth to relay 15 and to the 4/3 way solenoid valve
50A.
Relay 15 cuts the current supply to the lock-up valve units 89 and 99. Via
the 2/2 way solenoid valve and the 4/3 way solenoid valve, oil flows into
the hydraulic cylinders 82, 85, 91 und 92 – the side-mounted mower units
are folded out.
Upon reaching the end position or 80 bar, the oil pressure switch 79
connects earth to the solenoid valve 74. Via the 2/2 way solenoid valve
and the 4/3 way solenoid valve, oil flows into hydraulic cylinders 95.
The centre mower unit is lowered.
1.2.11 Folding CORTO to
transport position
Actuate rocker switch 4.
Earth is also connected to relay 17 on terminal 85 and to solenoid valve
74.
Relay 17 connects earth to relay 15 and to the 4/3 way solenoid valve
50B.
Relay 15 cuts the current supply to the lock-up valve units 89 and 99. Via
the 2/2 way solenoid valve and the 4/3 way solenoid valve, oil flows into
hydraulic cylinders 95 – the centre mower unit is raised.
Upon reaching the end position or 160 bar, the oil pressure switch 93
connects earth to the solenoid valves 72 and 73. The 2/2 way solenoid
valves make the side-mounted mower units fold in.
1.2.12 Accumulator is
blocked when
raising the entire
mower unit
When raising the complete mower unit, the load from the centre mower
unit on hydraulic cylinder 95 connects earth from oil pressure switch 94 to
the lock-up valve units 89 and 99.
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