Electrical Power To 999 Operator Cab - Manitowoc 999 Service And Maintenance Manual

999 SERVICE/MAINTENANCE MANUAL

Electrical Power to 999 Operator Cab

See Figure 1-5
Voltage is available to operate dome light switch (1), horn
switch (2), when key-operated engine switch (3) is in stop
position. After key-operated engine switch is placed in run
999CSM1-104
CB1
5A
90 AMP
CB3
5A
5B
15 AMP
CB4
5A 5C
15 AMP
F15
5A
5D
10A
F14
5A 5H
20A
K1
8
TO OTHER CAB
CONTROLS
Manitowoc
5
24 VDC
CB2
6
30A
6A
5
ALT
K3
ENGINE
STOP
STOP
HORN
45
Published 05-16-17, Control # 233-03
position, power is available to the EPIC programmable
computer, air conditioning relay (ACR), power relay (K1),
engine control module relay (ECM), and start relay (MS1).
When power relay K1 is enabled, power is available to
operate crane controls and accessory controls (see
Electrical Schematic drawings in Section 3).
12 VDC
STARTER
6A SS
MOTOR
MS1
6B
6A1
ES
ETHER VALVE
6A1
6C
ENGINE
RUN
START
3
7
DOME LIGHT
W
5A
0
TRANSIENT SUPPRESSOR
INTRODUCTION
0
M
STARTER
SOLENOID
SS
SOL
ER
70A
8ECM
ENGINE
CONTROL
MODULE
5C
ACR
CAB POWER
K1
K3
MS1
0
FIGURE 1-5
1
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