17
Warning: If the user is using tips other than the TeeJet
®
‚ VisiFlo
®
‚ brand,
the corresponding colors may not match. In this case, the user should
determine the flow rate of the tip being used at 40 psi (2 bar), and enter
this flow rate as the programmable tip.
NOTE:The flow rate will automatically be displayed at 40 psi (2 bar).
This pressure must be used for determining your tip’s flow rate. Actual
operation pressure is not important.
When the correct nozzle flow rate has been entered, advance to the next
programming step by pressing the key.
Pressure Regulating Mode
Default = byp (By-pass for US, trF, INP, and SI Modes)
Default =
thr (Throttling for nh3 Mode)
While in the Pressure Regulating Mode step, the symbol will be flashing at
the top of the console display.
This step tells the 844 where the regulating valve has been plumbed. Once set
correctly, this value should not change unless the regulating valve is physically
moved to a new point in the plumbing. For more information on plumbing refer to
page 2 and 3 of this manual.
The default value “
bYP” indicates that the pressure regulating valve is plumbed
in the bypass line. In most situations, especially total flows below 4 US GPM
(15 l/min) {3.3 Imperial GPM}, this is the preferred installation position. If the
default is correct, press the key to accept the value and advance to the
next step.
NOTE:When programmed in the bypass mode, with the controller in
“MAN” mode, the pressure regulating valve should close when the key
is pressed, and open when the key is pressed.
The pressure regulating valve can be located in the supply
line between the flow
meter and the boom control valves. If you will be locating the pressure regulating
valve in this position, use the or keys to change the value to
tHr
(Throttling Mode). By doing this, you have reversed the polarity that the console
uses to control the regulating valve.
NOTE:When programmed in the throttling mode with the controller in
“MAN” mode, the valve should open when the key is pressed and
close when the is pressed.
Press the key to advance to the next step.
Coarse Regulation Adjustment Speed
Default = 9
While in this step, the symbol will be flashing at the top of the console display.
This step allows you to regulate the speed of the pressure regulating valve to
accommodate different application needs.
Operating conditions may necessitate a higher or lower response speed for the
regulating valve. To change the response time number, simply use the and
keys to increase or decrease the number. Any number between 0 and 9 can
be selected. This digit sets the speed for coarse adjustments in relation to a large
percentage outside of the target application rate.
PRESSURE
REGULATION
MODE
REGULATION
ADJUSTMENT
SPEED
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