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17
17-2 Spread width and pattern
BASIC RULE
. The spread width is dependent upon the density of the granule or seed, and the disc speed
(plus other factors).
Large, dense granules and seeds with a high disc speed give the maximum spread width – small, light
granules and seeds will not spread as far.
Other factors affect the spread width:
Type of slug pellet.
Typically, a large, dense hard pellet should spread further than a small, light, soft
pellet, because it is comparatively heavy and does not powder on the disc. Typically, a ‘wet’ produced pellet
will be hardest, a steam produced pellet mid range, and a dry produced pellet the softest.
Seed varieties and dressings.
Different varieties and dressings will affect the density and the spread.
Wind Conditions.
Dead calm conditions are the optimum; any wind will affect the width pattern.
High forward speed.
The same as driving into a headwind of the same speed on a calm day, and this will
peel the edges of the spread pattern backwards and inwards.
Disc speed.
Altering the disc speed will affect the width. A higher disc speed will give a wider spread width.
Disc vanes.
Ensure they are in good condition and not worn excessively. Replace if necessary.
Low disc height.
Will not allow the product to reach its maximum width before gravity takes over.
Low electrical power.
Will not allow the disc to reach full speed.
High application rates.
Loads the disc more than a lighter rate and can slow it down.
Incorrect disc angle.
It must be at least horizontal – not angled downwards.
Ensure the correct Fan Jets are fitted in the correct position – the fixed deflectors fitted to the side of the Fan
Jet chassis should be facing inwards towards each other.
Ensure the disc rotation is correct, when viewed from behind the Left hand side Fan Jet disc should rotate in a
clockwise direction and the Right hand side Fan Jet disc should rotate in an anti-clockwise direction, for
clarification see Disc Rotation arrows on the decal.
The position of where the pellets flow onto the disc will affect where they come off the disc – this will affect the
overall spread width and pattern. Adjustment is provided by rotating the bias dial * factory set at 65 degrees
The black plastic knob on the side of the chassis secures the bias adjustment.
Unscrew prior to adjustment and then retighten.
For maximum spread width ensure the disc speed is set to at
full speed.
Adjust the spread pattern bias so that the two spread patterns
from the left hand and right hand machine meet and overlap in
the middle.
NOTE
for most slug pellets applications the spread bias will need to
be set between 60 and 75 degrees.
17-1 Spread bias adjustment
Содержание FAN JET DUO PLUS TM 130
Страница 18: ...18 18 Setting the working width 1 Settings 2 Maintenance 3 Machine 4 Measurements 5 Setup Spinner Width...
Страница 25: ...25 1 Settings 2 Jobs 3 Edit 4 Reset 25 Reset Jobs...
Страница 26: ...26 1 Go to Page 3 2 Hopper Left Right 3 Weight of product added into hopper Kg 26 Fill Hoppers...
Страница 28: ...28 Navigate into the Implement Offset Menu 28 Machine offset menu...
Страница 33: ...33 1 Settings 2 Press Maintenance 3 Press About Version is displayed at the top 33 Checking software Version...
Страница 37: ...37 37 Fan Jet Duo Plus TM Partsdrawing...