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844E Sprayer Control
TROUBLESHOOTING GUIDE
CONDITION
POSSIBLE CAUSE
SOLUTION
1
Application Rate Units (GPA, G/1000
ft
2
I/Ha) continually
fl
ash on/off
A
Continuous discrepancy of 10% or
more between Target Application Rate
and Actual Application Rate
Check all components and programming
steps related to
fl
ow
PROGRAMMING
B
Flow meter pulses
In the System Setup mode, move to the
fl
ow meter Pulses section on page 20
of the 844 Installation Manual. Enter the
factory calibrated
fl
ow meter pulse rate
located on the tag accompanying the
fl
ow
meter.
C
Nozzle Selection
In the Application Setup mode, move to
the Nozzle Selection section on page 30
of the 844 Installation Manual. Enter the
correct color or the
fl
ow rate in US GPM
(l/min) {Imp. GPM} of the tips you are
using at 40 psi (2 bar). For new tips, this
can be found in your TeeJet® Catalog.
If the tips have been used and possibly
worn, measure the
fl
ow in US Gallons
Per Minute (Liters Per Minute) {Imperial
Gallons Per Minute) at 40 psi (2
bar) and enter the value in the User
Programmable tip programming step
which can be found in the System Setup
Mode on page 19 of the 844 Installation
Manual.
D
Number of spray tips per boom
section
In the System Setup mode, move to the
Tips Per Boom Section step on page 16
of the 844 Installation Manual. You must
enter the correct number of spray tips for
each boom section on your sprayer. Five
boom sections are possible. If you do
not use all boom section switches, make
sure those not used are set to “0”. Make
sure that the switch numbers being used
correspond with the section numbers
programmed.
