AVANT 1200 - 6.9 Removing a blockage

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6.9 Removing a blockage
It is unlikely that the cutting deck gets blocked in normal operation. However, when when mowing wet grass or
driving at too high speed, the collector nozzle or tubes might get blocked. If blocking occurs, lower driving
speed, and also check the cutting deck and clean if necessary. Increase engine RPM to operate the mower at
maximum allowed hydraulic flow.
DANGER: Cutting hazard - Unexpected starting. Clearing a blockage can start the
mower unexpectedly immediately after clearing the blockage, if the auxiliary hydraulics of
the loader is left on.
Always stop the loader by following the safe stopping procedure before going near the
mower. Never reach to the cutting deck if the mower or its blades can move.
To prevent accidents, turn the auxiliary hydraulics control lever of the loader to its neutral
position, shut down the loader engine and release the residual pressure always before
going near the attachment.
WARNING: Cutting hazard - Make sure collector fan is disabled before handling
collector components. Disconnect hydraulic hoses before removing collector tubes or
reaching to the collector fan.
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Keeping the rotating speed sufficiently high and drive speed low on demanding conditions are essential to
avoid blockages. Keep the equipment clean, so that material will not stick on it.

Wet, thick, and log grass can get coiled around the blades if drive speed is too high. When mowing high or
wet hay more than one run may be needed for even results. Also, adjusting the cutting height to higher
setting, or operating at lifted operating position, will help avoiding blockages.

If blockage occurs, it needs to be cleared manually using suitable tools. Follow safe stopping procedure
before going near the mower.
6.10 Collector unit
Cleaning of the collector nozzle and the collector fan is important for their smooth
operation. If the nozzle is dirty, grass starts to stick to it and will eventually block the fan.
Also, a dirty fan rotor loses its balance. A rotor that is out of balance may damage the
fan's hydraulic motor, so clean the rotor carefully and regularly.

 To clean the fan rotor, first remove the collector tubes and then clean the rotor blades one by one,
turning the rotor manually.
 Check the collector tubes and keep them clean as well. Damaged, leaking tubes will significantly
decrease the collector performance.
 If the rotor remains out of balance after cleaning, it might be damaged. A damaged rotor must be
repaired or replaced to prevent damage to the hydraulic motor. In this case, contact AVANT service.