horsch LEEB 12 TD, Operating Instructions Manual, Page: 119 / 181

Faults
WARNING
Danger of crushing, shearing, cutting, cutting off, being caught, winding up, being pulled
in and impact caused by
¾
accidental lowering of lifted, unsecured machine parts.
¾
accidental starting and unintended rolling of the tractor/machine combination.
Secure the tractor combination against unintended starting and accidental rolling away before
faults on the machine can be rectified. Wait until the machine has come to a halt before entering
the danger zone.
Fault Cause Remedy
The pump does not
prime.
Blockage in the suction side
(suction hose) / fitting
Remove the blockage.
Pump draws in air.
•
Check the hose connection on the
suction hose for leakage.
•
Drain valve on suction filter open.
•
Suction filter housing leaking.
Pump does not generate
any power.
Jammed or damaged ball
valves.
Replace the ball valves.
Pump draws in air, noticeable
air bubbles in the spraying
mixture container.
Check the hose connections on the
suction hose for leak tightness.
Wobbling of the spraying
cone
Irregular fluid flow from the
pump.
Check valves on suction and
pressure side, replace if necessary.
The required and entered
application quantity is
not reached.
High travel speed; low pump
drive speed
Clogged nozzles / nozzle filter
or suction filter / pressure filter
Reduce the travel speed and
increase the pump drive speed,
until both the error message and the
audible warning disappear.
Clean nozzles / nozzle filters with
compressed air. For this purpose
unscrew the nozzles and blow them
out with a compressed air gun (on
the boom middle section). In case
of frequent appearance check the
suction filter / pressure filter.
The permitted spraying
pressure range of the
installed spraying nozzles
is not complied with.
Changed specified travel
speed which affects the
spraying pressure.
Change the travel speed to reach
the travel speed range that has been
determined for spraying operation.
The spraying pressure
does not maintain the
nominal value.
Spraying pressure too low
•
Cleaning the filter.
•
Increase the engine speed.
Main cleaning process
stops at internal cleaning.
Manual switch-over ball valve
internal/outside cleaning set to
outside cleaning.
Switch valve to internal cleaning.
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