Eliet GZC 1000, Manual

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English
9.9.4 Irregular sowing pattern
If the seed flow rate has been set correctly, the seed on the surface should
be hardly visible. The seed visible in the grooves should have constant density along the entire
work width. An irregular seeding pattern, i.e. no seed in some places and lots of seed in other
areas, has the following cause:
• The seed emerging from the seed reservoir is scattered via the guide plate. It could be that the
seed is being scattered incorrectly as a result of dirt on the guide plate..
• The funnels can get blocked as a result of dirt, moisture or a blocked scatter opening. These
blockages will usually disappear automatically, and the seed that was stacked in that particular
funnel will be scattered in one go, causing an abundance of seed in places. This will obviously
be visible in the lawn once the seed starts to grow. It is therefore important to check the funnel
channels as soon as irregularities are detected.
Continual irregularities in the seed flow across the entire work width can be the result of the
following:
• A small rotating drum fitted at the bottom of the seed reservoir ensures a constant seed flow.
It is driven by a chain and runs synchronously with the machine’s operating speed. A defective
drive will result in an irregular seed flow. Possible causes of a defect:
o Broken chain
o Displaced chain
o Incorrect setting of the chain tightener
o The locking pin on the sprocket of the axis of the rotating drum broke down.
o Sprocket on roller came loose
o Locking pins of the rotating drum on the driving axis came loose.
o Coupling worn or broken
9.9.5 The worked surface shows a trail of damage.
Whilst performing levelling or sowing activities, one may suddenly notice an abnormal trail of
damage in a worked lane. This could have the following causes:
• Since the vibrating harrows do the ground work, they must be examined first. Presumably, one
or more teeth of the vibrating harrows struck an object in the ground, causing it to become
bent or damaged and consequently carving out wide, unsightly grooves. Read § 11.4.8 Checking
vibrating harrows for irregularities.
• It is possible that an object has become wrapped around one of the teeth of the vibrating
harrows, causing a damage trail apart from the harrows themselves.
• Or a foreign object may be stuck in the apertures of the rollers.