Rabe Digger HA, Operating Instructions Manual

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We reserve the right to make technical changes.
”HydroAvant” hydraulic stone guard
The ”HydroAvant” stone guard protects the tines
from being strained excessively.
The stone guard is factory-adjusted to a pressure
of 100 bar.
If the cutters become slightly misaligned in soft
ground, or if the spring-back force is insufficient
for heavy soil, pressure can be adapted to ground
conditions.
The return conduit (5.1/3) (with yellow cap) must
always be connected to a pressure-free return
socket on the tractor during operation. The pressu-
re conduit (5.1/1) (red cap) is required only for the
correction of system pressure.
System-pressure settings
- Connect the pressure conduit (5.1/1) to the sing-
le-action tractor control device.
- Open the shutoff valve (5.1/2)
- Use the tractor control device to adjust system
pressure to the desired setting, observing the value
displayed on the pressure gauge (5.1/4). The ma-
ximum adjusted pressure in the system when idle
must not exceed 160 bar.
- If the system pressure is higher, oil is blown out
via the return conduit (5.1/3) and pressure control
valve (5.1/5). Close the shutoff valve (5.1/2).
- Release pressure on the conduit at the tractor
end and uncouple from the tractor.
Max. tractor operating pressure approx. 200 bar.
System pressure must also be corrected after
simultaneous release of several tines at a high
pressure. The drained oil must then be put back
into the system via the fine-adjustment pressure
control valve (5.1/5) and the return conduit (5.1/3)
to the tractor.
IMPORTANT
All fitting work on the hydraulic stone guard must
be carried out by suitably trained personnel.
- Installation must be carried out with the hydrau-
lic system depressurized (see: system-pressure
adjustment).
- The digger must be placed on supports before
releasing system pressure.
- The digger tines must not be used again until
system pressure is adjusted.
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5.1
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