999-1512
TASC ROADSIDE SPRAYER SUPPLEMENT
3
R1
V 3.10
ROADSIDE SPRAYER OPERATIONS, TASC MANUAL SUPPLEMENT
NORMAL SPRAYING WITH PRESSURE BALANCED ROADSIDE SPRAYER
1)
Operate in programmed carrier rate to keep a constant carrier application and
injected chemical application per acre, regarless of speed changes. (pres-
sures will vary with speed.)
2)
Operate in Automatic pressure control to keep a constant pressure regard-
less of speed or boom changes. Chemical injection pumps will respond to
speed and boom changes to keep chemical rate per acre constant.
3)
Use alternate boom widths to increase injected chemical pump speed when
spraying significant slope, to account for larger area being covered..
HANDGUN
1)
Operate at a programmed carrier rate to keep a constant injection pump
speed, regardless of small variations in carrier flow.
2)
Operate carrier valve in manual to keep a constant concentration of chemical,
regardless of all variations in carrier flow. (Use when feathering trigger on
handgun for example.)
MODES OF OPERATION
TASC roadside operations require, at least, TASC software level 3.10 or above, Slave software
level 3.0 or above, the inclusion of an external handgun function switch, an interface cable and
a flow switch in the handgun feed line. There are special features of the TASC available to
Roadside Applicators in both the Handgun and Normal modes. The Handgun option allows the
user to set chemical injection rates based on carrier flow rates,(i.e. ounces per 100 gallons of
carrier or the chemical to carrier ratio, e.g. gal:gal or oz:oz). Pumps start and stop in response
to the start of carrier flow sensed by a flow
sensing switch. Chemical injection will only
occur when the handgun trigger is pulled and
flow is established.
In the Normal mode the TASC can control to
a desired pressure (regardless of speed
changes), responding to the activation of
pressure balanced boom sections found on
certain roadside sprayers. The Normal mode
also allows selection of alternate widths "B"
or "C" to accomodate changes in sprayed
area due to roadside slopes rather than boom
sections turned on or off.
'B' Width
Normal
Ground Speed
Override
'C' Width
Handgun
Off
Auto
Boom
Switch
Mode
Switch
Ground
Speed
Override
Example 405-0093 Switch Panel
