Valmar Calibration
Page 21
Use the following formula to determine crank
turns if your implement width is not found in the
chart.
3679.5 = Number of crank
Implement width (ft.) revolutions
3. Weigh both containers. Subtract the weight
of the empty containers. The product weight
is the application rate in lbs/acre at the
selected gearbox setting.
Calibration Results
Compare the calibration results with the
Product Flow Rate Charts in this manual. A
difference in flow rates could indicate the
following:
- Incorrect sprocket installation on the
ground drive system. See Figure 5-4 for
correct sprocket layout.
- Gearbox is not properly set.
- The flow rate characteristic or density of
the product has changed.
- Metering rollers are worn or damaged.
- Metering roller gap is not correct.
- A mathematical error was made.
- Alternate rate was engaged instead of
normal rate.
If a difference occurs after eliminating the
above possible causes, contact your Valmar
dealer.
Figure 5-4: Sprocket Layout
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