X20 Sprayer Reference Manual
Min PWM
To set the Min PWM put the Sprayer into Manual mode from the Working screen, with Agitation on full, all Boom Sections ON and a manual pressure gauge installed.
Determine the minimum pressure value for the spraying system, which is normally the lower limit of the nozzles being used. For this example we will use 100kpa.
From the Working screen, making sure the MANUAL button is selected, use the Dec button to decrease the pressure until 100kpa is reached (taking the reading from the manual pressure gauge).
Then go to the Options>Sprayer>Settings page. Starting at 5% increase the value to 10% and select the OK button to accept the change, then take a look at the pressure gauge.
Keep increasing the value in 5% increments (after each change, close the window by selecting the OK button) until the pressure just starts increasing above 100kpa on the manual pressure gauge. Use the value before the pressure increased above 100kpa; therefore, if 30% made the pressure increase above 100kpa, then use 25% as the Min PWM value.
The value will normally be around 25%.
Using High Minimum PWM Range Option
If after selecting 40% PWM and there is still no increase of pressure above 100kpa, then your system may have a Minimum PWM value above 40%. If this is the case, select High Minimum PWM Range from the Valve Options window. The Min PWM window will now have a range from 42.5% PWM to 60% PWM displayed.
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