LELY HIBISCUS 1015 Profi, Руководство оператора

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E-18
A HYDRAULIC SYSTEM
A.1 Adjustment of ground pressure
relief system
Standard adjustment of the ground pressure relief system is 5.0 MPa
(50 bar). However, it may be necessary to re-adjust this standard
pressure if the wheels underneath the rotors show too much
compaction on grounds with insufficient bearing power, or if the
rotors do not follow the ground contours properly.
Please proceed as follows for re-adjustment:
- Unfold the machine completely.
- Open the valve on the buffer ram (A, fig. A-1).
- Operate the double acting tractor valve, which will cause a change
of pressure (shown on manometer B).
Adjust the pressure to the required value.
- Close the valve A on the buffer ram.
A.2 2 Filling the hydraulic system
In case of repairs to the hydraulic system, it needs to be totally
depressurised.
This can be carried out as follows:
- Put the tractor's hydraulic spool valves (both single acting and
double acting) in the floating position.
- Open the valve on the buffer ram (A, fig. A-1). Pressure will now
decrease to 0 MPa (0 bar).
After the repair, the hydraulic system needs to be refilled.
This can be carried out as follows:
- Open the valve A on the buffer ram.
- Put the tractor's single acting spool valve in the floating position.
- Pull the control cord of the hydraulic system or press the button
on the control box and operate the tractor's double acting valve.
Fold up the machine completely up to the transport position.
Do not operate the single acting spool valve!
- Unfold the machine onto the ground, in the reverse order, by
activating the tractor's double acting spool valve.
Do not operate the single acting spool valve!
- Repeat the aforementioned steps 10 times to ensure all air is
removed from the hydraulic system.
- Now make sure the required pressure is applied to the system.
To ensure this: follow the instructions provided in supple-
ment A.1 “1 "Adjustment of ground pressure relief system”.
A-1
A
B
Supplement A