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A2677 Rev 1.5
X20 Sprayer Reference Manual
Tank Low This alarm gives a warning that the tank is running
low (Calculated) The default warning point is set at
5%, but can be changed in the alarm settings.
Flow Sensor
Fail
This alarm is triggered whenever the master is turned
on, ground speed present, and at least 1 Boom Sec-
tion is turned on, and there are no ow sensor pulses
being received. The default Alarm Delay is 1 second,
which can cause some false alarms. If a Sprayer is
turned off with the Regulator Valve closed and a
centrifugal pump is is use, the pump may cavitate
and have virtually no pressure. When the Sprayer is
turned on, it will usually take several seconds for the
pump to clear the cavitation and produce ow. With 1
second delay, the alarm will sound almost every time
the Sprayer is turned off and on with ASC. Setting the
delay to 3 seconds will usually stop this false alarm.
If the Sprayer is slowed down before the booms turn
off, the regulator will be bypassing some liquid back
to the tank which will avoid the cavitation problem. If
adjutation is sufcient, this could also stop the pump
cavitation.
High
Pressure
The high pressure alarm indicates that the pressure
signal input has exceeded the alarm point setting. If
correctly set, this usually indicates a blockage, booms
off when they should be on, or Sprayer speed too
high. Normally this would be set around the maxi-
mum pressure the nozzles are rated for
Low Pressure The most common cause of this alarm is an empty
tank. With minimum ows set for nozzles, owmeter
and pressure, this alarm will only show up with a
pump or plumbing failures, or an empty tank.