Goldacres Prairie Pro Operator's Manual page 35

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If the nozzles or tier values selected allow for very
little or no pressure overlap a "PERCENT TIER
DISABLE" value of "0" must be selected:
1. To enter a "PERCENT TIER DISABLE" value
depress the [ENTER] key to display the "E" (enter
symbol).
2. Key in the desired percentage overlap and depress
the [ENTER] again to lock it in.
3. Press a volume or area key to exit this function
and return to the operational screen.
The SCS 4400 3TS system can be set up to operate
in a 2TS mode if the operator wishes to use the
same size nozzles in both boom lines.
In the 2TS mode the console will start the sprayer
on one line then turn the second line on in
con unction with the first at a predetermined point.
It effectively does away with the first tier interchange
point of the 3TS system where one boom line
is turned "on" whilst the other is turned "off "
obviously this step is superfluous if the same si e
no les are fitted to both boom lines .
TO SET THE CONSOLE UP IN THE 2TS MODE:
1. Depress and hold down the [BOOM CAL] key
for 5 seconds until "TIER 1 HIGH VOL PER MIN"
is displayed.
2. Depress the [ENTER] key to display the "E" (enter
symbol).
3. Key in a value of "1".
4. Depress the [ENTER] key again to lock it in.
By entering a value of "1" the console will
automatically proceed and start on the second tier.
To calculate the second tier interchange value:
From the nozzle chart in the operator's manual
or the TeeJet catalogue locate the minimum
recommended operating pressure and
corresponding flow rate L min for the no le si e
and type fitted to the sprayer.
NOTE: If operating the sprayer in the 2TS mode the
same si e and type of no les should be fitted to
both boom lines.
Prairie Pro Operator's Manual MY19 - REV 2
ier ro ra in
Multiply this value by 2 then by the total number
nozzle on one entire boom line.
or example: sing a 3 m broad acre boom fitted
with XR11002 nozzles.
The minimum recommended pressure for an XR
no le is 1 bar. The flow rate for an R11 2
nozzle at 1 bar is 0.46 L/min. Thus the second tier
interchange value will be 0.46 X 2 X 60 (2 nozzles/
meter) = 55.2.
NOTE: The console will not accept tier values
containing decimal points, so round any values
calculated with decimal points off to the nearest
whole number before entering.
So the value entered in this example would be 55.
Continuing on from above to enter the second tier
interchange point:
1. Depress the key and "TIER 2 HIGH VOL PER
MIN" will be displayed.
2. Depress the [ENTER] key again to display the "E"
(enter symbol).
3. Key in the second tier interchange value and
depress [ENTER] again to lock it in.
4. Depressing the again will display "PERCENT TIER
DISABLE" (see instruction above on setting this
value).
5. Depress and volume or area key to exit this
function and return to the operational screen
NOTE: That if either tier value is set to zero then
the boom valves will not open.
Chapter 6 - Calibration - 29