RDA 400-450 S
Ver.3 29.06.2007
87
The drill can be raised although
the lift stop is engaged!
- Check whether the magnetic valve (C) on the valve
block receives current. See
Hydraulic electric valves
under ”
5.1.3 Hydraulic electric valves” on page 83.
- Check the low-lift switch as explained above.
If the lift stop valve does not receive
current:
- See ”
5.1.1 Electric fault” on page 82.
If the lift stop valve receives cur-
rent:
- See ”
5.1.2 Hydraulic fault” on page 82.
The drill cannot be raised and/or
lowered!
- Check whether the lift stop or low-lift mode has been
set.
- See ”
5.1.2 Hydraulic fault” on page 82.
If the drill cannot be raised:
- Check whether the lift stop or low-lift mode has been
set.
- See ”
5.1.2 Hydraulic fault” on page 82.
- Check whether the lift stop valve (C) receives current
as a result of a shortcircuit or another fault. See
Hy-
draulic electric valves
under ”
- Switch off the Control Station and check whether the
drill can be raised. If it is still not possible to raise the
machine, the fault can be found in the hydraulic sys-
tem.
- Check whether a shortcircuit has occurred in the cable
harness or the intermediate cable and which function
is affected.
The Control Station generates an
alarm of too low or too high fan
speed!
-
NOTE!
The alarm is not generated if the fan hose has
come loose or the ejector elbows are not in the correct
positions.
Hydraulic fan:
- Check whether the hydraulic hoses are correctly con-
nected and that the hydraulic connector is pressurized.
- Check the programming of the Control Station.
- Have the pressure and flow been correctly set on the
tractor (130 bars and at least 35 l/min.)? Has the flow
valve of the tractor been correctly set?
- Has the fan speed regulator been correctly set? (Op-
tional; this is used when the tractor does not feature an
inherent flow regulator device.)
Содержание Rapid RDA 400S
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