TeeJet 844 Sprayer Control - Manual (Page 24)

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Regulation Adjustment Speed
Default = 9.5 ( bYP Mode)
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 0.0 and 9.9
can be selected. The first digit sets the speed for coarse adjustments in relation
to a large percentage outside of the target application rate. The second digit sets
the speed for the fine tune adjustment in relation to a small percentage close to
the target application rate.
9.5
(Coarse).(Fine)
If your system is plumbed in a by-pass mode, the valve speed number of 9.5
works very well in most applications.
If your system is plumbed in a throttling mode, start with a valve speed number
of 3.0 and adjust the number according to your application requirements. Low
flow situations will require a slower response time. Adjusting agitation volumes
to accommodate the regulating valve to work in a more fully open position
allows for a faster response time, with little to no searching.
To accept this value and advance to the next step, depress the key.
NOTE: This speed value can be adjusted to optimize system performance.
If you notice that the valve seems to “search” for the programmed
application rate by cycling the pressure up and down continuously, reduce
the number until the “searching” is minimized or eliminated. Conversely, a
higher number will increase the valve response speed and speed up the
rate of adjustment.
Boom Control Valve Type
Default = 2 Way
While in the Boom Control Valve Type step, the symbol will be flashing at
the top of the display. The programmable information (2 Way or 3 Way) will be
displayed at the left in the console display.
This programming step is used to distinguish the type of on-off boom control
valves you have on your system. There are two types of valves that can be used,
2-way control valves or 3-way control valves.
A 2-way control valve is simply an on/off valve. Flow is either directed to the boom
section(s) or it is blocked or diverted away from the booms. A 3-way control valve is
know as a by-pass valve. Flow continuously passes through this valve. When the
valve is activated (on), flow is directed to the boom section(s). When the valve is not
activated (off), flow is directed through a bypass port, back to the supply tank.
If you are using the 3-way type of boom control valves in your system, change
the value using the or keys. Depress the key to accept the value
and advance to the next programming step.
If the default value is correct, depress the key to accept the value and
advance to the next programming step.
Note: If using 3-way, bypass boom control valves, refer to the instruction
manual of the valve you are using for proper calibration instructions.
2 Way
3 Way
CONTROL
VALVE
TYPE
REGULATION
ADJUSTMENT
SPEED