Multi Pro 5800 Page 8 − 9 GeoLink Spray System
Nozzle Control Valves
Standard spray systems such ExcelaRate use three (3)
boom control valves to start and stop the flow of product
to each of 3 booms. A total of ten (10) nozzle control
valves are used to start and stop the flow of product to
the twelve (12) spray nozzles on machines with GeoLink
spray systems. Each valve controls one nozzle with the
exception of the 4 center nozzles (nozzles 5 and 6 are
controlled by a single valve, and nozzles 7 and 8 are
controlled by a single valve).
NOTE: The AGI−4 antenna, X25 or X30 control console
and ASC−10 auto section controller communicate with
each other on a CAN−bus network. The GeoLink Can−
bus network is separate from the sprayer traction unit
CAN−bus.
Spray Pump
The GeoLink spray system on the Multi Pro 5800 uses
a positive displacement six (6) diaphragm pump to
move spray solution from the spray tank to the boom
nozzles. The spray pump is self−priming with manually
lubricated bearings and a dry crankcase.
The downward stroke of the pump’s connecting rods
and diaphragms creates suction to allow fluid to be
drawn from the spray tank to the pump via the suction
tube, suction strainer, hoses and connectors. Suction
valves positioned in the pump valve chamber prevent
fluid from being pumped back into the suction line during
the upward stroke of the pump’s connecting rods. Leaks
in the suction line will cause system problems and often
will be indicated by erratic spray, line jumping and ex-
cessive pump noise.
Once to the pump, the fluid is pushed by the upward
stroke of the pump’s connecting rods and diaphragms
to the pressure side of the spray system. Pressure
valves positioned in the pump head prevent fluid from
being drawn back into the pump during the downward
stroke of the pump’s connecting rods. Maximum pres-
sure in the system is limited by a pressure relief valve lo-
cated near the pump. A pressure transducer in the
system provides spray pressure information to the
ASC−10 controller and for the X25 or X30 console dis-
play. An analog pressure gauge is also located on the
dash panel to indicate spray system pressure.
System Controls
Constant (unswitched) battery current is supplied to the
AGI−4 GPS antenna and the X25 or X30 console
through a 10 amp fuse located in the wire harness near
the vehicle battery. Constant (unswitched) battery cur-
rent is supplied to the ASC−10 controller through a 50
amp fuse located in the wire harness near the ASC−10
controller. Switched battery current is supplied to the
main fuse blocks by the main relay when the machine
ignition switch is in the RUN position. A 30 Amp fuse in
fuse block 3 (FB3) provides switched power to all of the
spray system components. For spray system electrical
component information and circuitry, see Chapter 6 −
Electrical System and Chapter 11 − Foldout Drawings in
this manual.
In addition to the X25 or X30 console, the spray system
is operated by a variety of electrical switches located on
the dash and control console. Switches include a spray
pump enable switch, an agitation control switch, two (2)
boom lift switches, three (3) boom section switches and
a master boom switch. These switches control the spray
pump hydraulic hydraulic drive motor flow ON/OFF, the
agitation control valve ON/OFF, the hydraulic boom lift
solenoid coils RAISE/LOWER, the spray nozzles on a
specific boom section ENABLE/DISABLE and all of the
boom sections ON/OFF.
NOTE: The three (3) boom section switches and the
master boom switch are used to enable or disable the
spray system nozzles by boom section. When operating
the system using automatic section control, the switch-
es must be set to ON to allow the ASC−10 to control the
nozzles individually.
The spray pump is directly coupled to and driven by a hy-
draulic motor. Flow from the hydraulic system gear
pump to the motor is controlled by a series of valves in
the pump control manifold. Based on available current
(mA) from the ASC−10 controller, the hydraulic propor-
tional valve (PV) controls hydraulic flow to the spray
pump motor. This hydraulic flow causes the motor to ro-
tate the spray pump for spray system operation. The
spray pump enable switch located on the control con-
sole must be in the ON/ENABLED position to allow the
ASC−10 to control the spray pump. A logic cartridge
(LC) and a relief valve (RV) located in the pump control
manifold help maintain consistent and safe operating
pressure. See Hydraulic Flow Circuits − Spray Pump
Drive Circuit in Chapter 5 − Hydraulic System in this
manual for more detailed information.
GeoLink
Spray System
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