MAYCO LS300P CONCRETE PUMP • OPERATION MANUAL — REV. #1 (02/20/17) — PAGE 89
WIRING DIAGRAM 2 (EXTERNAL CONTROL BOX)
1
2
3
4
5
6
7
8
4
3
2
1
8
7
6
5
J3 MALE
INTERFACE
CONNECTOR
(YELLOW)
INSIDE
CONTROL
BOX
OUTSIDE
CONTROL
BOX
P3
P3
8 7 6 5
4 3 2 1
J3
8 7 6 5
4 3 2 1
J4
INSIDE
CONTROL
BOX
OUTSIDE
CONTROL
BOX
YELLOW
WHITE
CONTROLLER
BLACK
POTTED
BOX
B
INSIDE
CONTROL
BOX
OUTSIDE
CONTROL
BOX
1
2
3
4
5
6
7
8
4
3
2
1
8
7
6
5
P4
P4
YELLOW
YELLOW
WHITE
YELLOW
WHITE
J1
J2
J3
J4
J5
CONTROL
BOX REAR
VIEW
PROX C
PROX D
PROX B
ENG SOL POWER 35A 1 SEC
PROX A
POWER
GROUND
TIMER
FLOW A 12VDC
FLOW B 12VDC
BROKEN FAN BELT
OVER TEMP
WIRING CONNECTIONS TO J3, J4 AND J5
RECEPTACLES ON DIGITAL CONTROL BOX (LS300P)
A
B
C
16 AWG WHITE
+12 VDC
16 AWG BROWN
GND.
SIGNAL
SIGNAL
HEAT EXCHANGER
“COOLING FAN”
+12 VDC
14 AWG RED
NOT USED
+12VDC OUT
BLUE
J4 MALE
INTERFACE
CONNECTOR
(WHITE)
8 7 6 5
4 3 2 1
J3
8 7 6 5
4 3 2 1
J4
12VDC
30
17
58
19
15/54
50A
IGNITION
SWITCH
PROXIMITY
SWITCH “B”
INDICATOR “RED” ACTIVE
BETWEEN GND. 800 mV
PROXIMITY
SWITCH “A”
PROXIMITY
SWITCH “D”
PROXIMITY
SWITCH “C”
16 AWG BLUE
16 AWG GREEN
16 AWG BROWN
16 AWG BLUE
16 AWG YELLOW
16 AWG BROWN
16 AWG BLUE
16 AWG GREEN
16 AWG BROWN
16 AWG BLUE
SIGNAL
SIGNAL
NOT USED
NOT USED
NOT USED
INSIDE
CONTROL
BOX
OUTSIDE
CONTROL
BOX
1
2
3
4
5
6
7
8
4
3
2
1
8
7
6
5
P5
P5
12VDC
J5 MALE
INTERFACE
CONNECTOR
(YELLOW)
8 7 6 5
4 3 2 1
J5
YELLOW
8 7 6 5
4 3 2 1
J5
GND.
SIGNAL
SHUTTLE D
14 AWG BLK
GND.
ENGINE
TEMP. SWITCH
1
2
16 AWG
DARK
BLUE
14 AWG RED
14 AWG WHT
MAIN CYLINDER
SHUTTLE CYLINDER
A
A
A
S
B
A
A
A
A
K1
COMMON
30
K1 NO
87
K1 NC
87A
CB1
50 AMP
PREHEAT
TO STARTER
SOLENOID
+12VDC
K2
COMMON
30
K2 NO
87
K2 NC
87A
CB2
50 AMP
FAN POWER
TO STARTER
SOLENOID
+12VDC
85
K1
86
85
K2
86
A
A
GND.
16 AWG RED
T
Q
P
O
N
M
L
R
16 AWG
DARK
BLUE
Z
Z
A
GLOW
PLUGS
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