Multi Pro 1200/1250
Page 5 -- 17
Electrical System
Spray Pro Monitor
TheMultiPro1200and1250are equippedwith aSpray
Pro Monitor (Fig. 25) to provide the machine operator
with spray system information. Operation, calibration
andtroubleshootinginformationfortheSprayProMoni-
tor is included in the Operator’s Manual.
NOTE: Spray monitor operation on Multi Pro 1200 and
1250 machines can be c hecked with special tool
TOR6001 (see Special Tools in this chapter).
Testing Flowmeter and Speed Sensor Input
The following procedure can be used to determine if in-
putsfromthe flowmeter andspeedsensor are reaching
the Spray Pro monitor.
1. Parkmachineonalevelsurface,stopengineanden-
gage parking brake.
2. Locate and disconnect wireharnessconnectorfrom
component to be tested (flowmeter or speed sensor).
3. Turn ignition switch to RUN (do not start engine).
MakesurethatthepumpcontrolswitchisintheONposi-
tion. On Multi Pro 1250 machines, turn all spray booms
and master boom (foot) switch ON.
4. Set Spray Pro monitor as follows:
A. If flowmeter input is being tested, turn monitor
knob to the Calibration Volume setting on Multi Pro
1200 or Total Volume setting on Multi Pro 1250.
B. Ifspeedsensorinputisbeingtested,turnmonitor
knob to the Calibration Distance setting on Multi Pro
1200 or Distance setting on Multi Pro 1250.
5. At the disconnected w ire harness connector, use a
small jumper wire to rapidly short ground terminal and
signal terminal several times (Fig. 26). As the jumper
wire makes contact with these two terminals, the Spray
Pro Monitor display value should change.
6. Useamultimeter(DCvoltsetting)tomeasuretheDC
voltage between the disconnected flowmeter wire har-
ness connector terminals (Fig. 26).
A. There should be approximately 5 VDC between
connector ground and power terminals.
B. There should be approximately 5 VDC between
connector ground and signal terminals.
7. Turn ignition switch to OFF. Record test results.
8. Iftestingresultsarecorrect,c onsiderafaultycompo-
nent (flowmeter or speed sensor).
9. Iftestingresultsareincorrect,checkforwireharness
problem between component (flowmeter or speed sen-
sor) and Spray Pro Monitor. If wire harness is not dam-
aged (open or shorted), suspect a faulty monitor.
10.After testing, connect wire harness connector to
component.R epeatforsecondcomponentifnecessary.
Figure 25
SPRAY PRO
MULTI PRO
MONITOR
1250
SEL
UNITS
UNITS OF
MEASURE
SPEED
CALIBRATION
WIDTH
FLOWMETER
CALIBRATION
SPEED
CALIBRATION
DISTANCE
CALIBRATION
VOLUME
APPLICATION
RATE
MP1200
SPRAY PRO
MULTI PRO
MONITOR
1200
Figure 26
Speed
Sensor
Connector
Flowmeter
Connector
Multi Pro 1200
Flowmeter
Connector
Multi Pro 1250
GROUND
SIGNAL
POWER
POWER
SIGNAL
GROUND
GROUND
SIGNAL
POWER
Electrical
System
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