8.3 Hydraulic protection function of the machine
•
Hydraulic protection of the front and rear row of ploughshares is implemented by means of
pressure accumulators.
•
To ensure proper operation, the
ploughshare protection circuits
must be pressurized to
90 bar
and these circuits must then remain in the
floating position
.
•
The hydraulic protection circuits of the machine are also equipped with 2 ball valves, one for
each row of ploughshares.
•
The ball valves are used for easier disconnection of the hydraulic quick-couplings from the
tractor distributor by allowing depressurizing of the supply hydraulic hoses of the machine
ploughshare protection circuit, while maintaining pressure in the ploughshare protection circuit
that has to be maintained to safely shut the machine down.
The procedure for setting the hydraulic protection
1.
Check that the hydraulic hoses are connected properly according to the preceding chapter.
2.
Check that both ball valves of the ploughshare protection circuit are open; if not, open them.
3.
Pressurize the
protection circuit of the first row of ploughshares to 90 bar
– using the hose marked
with one red tape, monitor the pressure on the manometer with the red marking.
4.
On the tractor distributor, set the
red circuit to the floating position
.
5.
Pressurize the
protection circuit of the second row of ploughshares to 90 bar
– using the hose
marked with one green tape, monitor the pressure on the manometer with the green marking.
6.
On the tractor distributor, set the
green circuit to the floating position
.
7.
When this has been set, the protection is ready for work.
1 – open valves
PRESSURE VESSEL
Never open or adjust (welding, drilling etc.) the
pressure vessel (pressure accumulator). The
pressure vessel is still under gas pressure even
after it has been emptied.
Empty the pressure vessel in case of any work
on the hydraulics of the machine. The
manometer must not show any pressure, or the
pressure on the manometer must decrease to 0
bars. Only then it is permitted to work on the
hydraulic circuit.
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Summary of Contents for DIGGER 3 N
Page 2: ...2 41 Prepared by Technical Department Farmet a s on 12 10 2018 changes reserved ...
Page 4: ...PREFACE 4 41 IMPORTANT READ CAREFULLY BEFORE USE KEEP FOR FUTURE REFERENCE ...
Page 6: ...PREFACE 6 41 ...
Page 15: ...WORK SAFETY LABELS Fig 1 Location of safety labels on the machine 15 41 ...
