Service Manual

Page 9 - 13
Rev. A
Spray Circuit
Power Current
Control Current
Indicator/Gauge Current
Logic Direction
Multi Pro 1250
SPRAY VALVES (ON)
LEFT
PRESSURE
REGULATOR
FLOWMETER
B AC
C
B
BBBBAAAA
AAAABBBB
PUMP
CLUTCH
A
B
A
B
FLOW
MONITOR
K
J
H
G
F
E
D
C
B
A
K
J
G
H
F
D
E
C
A
B
TAN/BLACK
TAN
PINK/RED
PINK/BLK
PINK
GRAY/RED
GRAY/BLACK
GRAY
18 GA . GRAY
18 GA . GRAY/BLACK
18 GA . GRAY/RED
RED
BLACK
18 GA . LT. BLUE/BLACK
18 GA . LT. BLUE
18 GA . BLUE/BLACK
18 GA . BLUE
18 GA . YELLOW/BLACK
18 GA . YELLOW
18GA . GREEN/BLACK
18 GA . GREEN
16 GA . GREEN/WHITE
16 GA . BLACK
14 GA.
RED
J3 P3
P4 J4
P5 J5
P11
J11
P10
J10
P9
J9
P8
J8
P7
J7
16 GA . RED
14 GA . BLACK
18 GA . TAN/BLACK
18 GA . BLACK
14 GA . BLACK
16 GA . RED
RED
18 GA . TAN
18 GA . RED
30
85 86
87A
87
SPRAY VALVE K3
MASTER BOOM
(FOOT) SWITCH
8685
SPRAY VALVE K4
30
87A
87
85 86
SPRAY VALVE K5
30
87A
87
7
2 3
2
5
1
4
6
3
7
2
5
8
6
3
4
1
RED/WHITE
APPL RATE SWITCH
BLACK
ON POSITION
SUPERVISOR
SWITCH
(LOCKED
STATE)
PUMP SWITCH
ON–OFF (ON POSITION)
BLACK
BLACK
16 GA .
BLACK
P6 J6
RED/WHITE
RED/BLACK
RED/BLACK
BLACK
BLACK
BLACK
BLACK
RED/YELLOW
RED/YELLOW RED/YELLOW
BLACK
BLACK/RED
RED
BLACK
BLACK/RED
RED
RED
16 GA BLACK/RED
16 GA RED/BLACK
LEFT SPRAY
VALVE SWITCH
CENTER SPRAY VALVE SWITCH
RIGHT SPRAY
VALVE SWITCH
YELLOW/BLACK
16 GA RED
30A
VEHICLE
FUSE BLOCK
FOAM
MARKER
BOOM
LIFTS
SPRAY
SYSTEM
+
VEHICLE
GROUND BLOCK
ACCESSORY
SOLENOID
10 GA . RED
TO BATTERY +
A
A
B
B
C
C
SPEED
SENSOR
7
2
5
8
6
3
4
1
7
2
5
8
6
3
4
1
ON POSITION
C
B
A
C
A
B
RED
GREEN
BLACK
RED
GREEN
BLACK
5 6
BLUE
GREEN
DIODE
D1
SCR
R1
510 ohm
RESISTOR
GREEN/WHITE
MOMENTARY
CENTER RIGHT
A
ON POSITION
ON POSITION
(ENERGIZED)
ON POSITION
(ENERGIZED)
(ENERGIZED)
(ENERGIZED)
(ENERGIZED)
(Spray Pump and All Boom Switches ON)
NOTE: SCR DIODE IS USED FOR CIRCUIT PROTECTION FROM
GREEN/WHITE
7
2 3
BLACK
ON POSITION
PUMP SWITCH
ON–OFF (ON POSITION)
BLACK
RED
5 6
BLUE
GRN
DIODE
D1
SCR
R1
510 ohm
RESISTOR
GRN/WHT
MOMENTARY (ON)
TO SUPERVISOR
SWITCH
FROM APPL
RATE SWITCH
TO PUMP CLUTCH
VOLTAGE SPIKES THAT CAN OCCUR WHEN THE PUMP
THE PUMP CLUTCH.
CLUTCH IS DE–ENERGIZED. THE MOMENTARY SWITCH
CONTACTS ALLOW THE SCR DIODE TO BE TURNED ON
TO ALLOW CURRENT FLOW FROM THE SWITCH TO
(Master Boom Switch ON)
NOTE: SCHEMATIC FOR MACHINE WITH SERIAL
NUMBER BELOW 260000000 SHOWN.