Hydraulic / Electric System CORTO 8100 F/T TIC
3-14 10/04
2.2 Electric System
CORTO 8100 T
2.2.1 Key to diagram
1 Stop switch in control terminal
2 Left CORTO push switch, drive On/Off
3 Right CORTO push switch, drive On/Off
4 Indicator light in stop switch
5 Relay (switches coils 89 and 96)
6 Relay (switches coil 99)
7 Relay (switches coil 101)
8 Earth point
79 Oil pressure switch 80 bar (switches relay 6)
89 Coil - lock-up valve unit – right side-mounted mower unit
93 Oil pressure switch 160 bar (switches relay 7)
94 Oil pressure switch 30 bar (switches relay 5)
96 Coil - lock-up valve unit – left side-mounted mower unit
99 Coil – lower centre mower unit
101 Coil - side-mounted mower units to transport position
102 Coil – right-hand drive On/Off
103 Coil – left-hand drive On/Off
2.2.1 Function
Putting into operation Switch on stop switch 1.
Current is applied to relays 5, 6, and 7, terminals 30 and 86.
Switching on/Shutting down
the right-hand drive
Actuate rocker switch 3. Solenoid valve 102 is energized.
Lock-up valve unit 102 is opened and oil can flow into cylinder 77 upon
actuation of the tractor hydraulics and switch on the drive.
The adjustable pressure relief valve 72 opens at 60 bar.
Switching on/Shutting down
the left-hand drive
Actuate rocker switch 2. Solenoid valve 103 is energized.
Lock-up valve unit 103 is opened and oil can flow into cylinder 78 upon
actuation of the tractor hydraulics and switch on the drive.
The adjustable pressure relief valve 72 opens at 60 bar.
Folding the machine to
working position
Actuate the double-acting additional control unit on the tractor.
Oil flows into hydraulic cylinders 82, 85, 91 and 92.
Upon reaching the end position or 80 bar, the oil pressure switch 79
connects earth to relay 6.
Relay 6 connects the current supply to coil 99. Lock-up valve unit 99 is
opened and the front mower unit is lowered.
Folding the machine to
transport position
Actuate the double-acting additional control unit on the tractor.
Oil flows to hydraulic cylinders 95.
Upon reaching the end position or 160 bar, the oil pressure switch 93
connects earth to relay 7.
Relay 7 connects the current supply to coil 101.
Lock-up valve unit 101 is opened and oil flows into the hydraulic cylinders
91 and 92. The side-mounted mower unit are folded in.
The oil accumulator is shut
off while the three-point
hitch is raised
By raising the entire mower unit, using the tractor hydraulics, the oil
pressure switch (94) is actuated due to the load by the front mower unit
on the Hydraulic cylinders.
Relay (5) connects the current supply to coil (89) and (96). This blocks
the oil flow to the oil pressure reservoir (88) and (89.)
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