F200 and F300 User Manual | 13
- Once the counter reads zero, move the counter up the
full length of the shaft The colon will disappear once
it passes 9 and enter ‘clicks’ mode. At full height the
display should read ‘50’, which is 50 half centimetres.
- The counter is now calibrated.
- Switch off when you have finished, and then back on
again without pressing any buttons.
Test the zero calibration by raising and lowering the plate
several times. A beep should sound and the kgDM/ha is
displayed on the LCD screen as the plate falls. If it doesn’t,
repeat the steps above and retest.
If the calibration fails to hold then check the black saddle is
screwed down firmly, and the platemeter doesn’t twist easily
on the steel shaft. Otherwise the potentiometer, which the cog
drives may be faulty and will need replacing. This can happen
with excessive wear and by dust and dirt getting into the dry
bearing of the potentiometer.
Important: Be careful not to over-wind the metal cog fitting and this can
damage the unit. Use a firm but gentle amount of force to wind the fitting
anti-clockwise.
For more information about calibrating your platemeter and
“How To” videos visit www.platemeters.co.nz.
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