Manitowoc MLC100-1 Service And Maintenance Manual

Manitowoc Published 10-09-2020, Control # 259-06 3-1
MLC80A-1/MLC90A-1/MLC100A-1/MLC100-1 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
3
SECTION 3
ELECTRICAL SYSTEM
ELECTRICAL SCHEMATIC
The electrical schematic for this crane is located at the end
of this section.
ELECTRICAL POWER SEQUENCE
Battery Power
Power for the crane’s electrical system is provided by two
12-volt batteries connected in series to produce 24 volts.
The following devices are connected to the battery positive
terminal at all times:
• Alternator and intake air heater (via 250A alternator fuse
or circuit breaker)
• Starter solenoid
• Battery disconnect switch
• CraneStar® TCU (via 5A fuse F5)
Battery Power Disconnect
When in the OFF position (contacts open), the battery
disconnect switch disconnects the battery positive terminal
from the crane’s electrical systems.
The battery disconnect switch is turned to the OFF position
for the following situations:
• Whenever the electrical system is being serviced
• During extended downtime to help save battery life
• For security reasons
The battery disconnect switch must be in the ON (contacts
closed) position for machine operation. When the switch is
closed, battery power becomes available to the following
circuits and devices, via the main circuit breaker CB41:
• Display modules (via CB4)
• Relays K4 and K6 (normally open contacts)
• Relay K5 (via CB1)
• Horn, dome light, and service lights switches (via CB5)
• Radio clock and preset memory (via CB5)
• Relay K7 (normally open contacts) (via CB2)
• Remote battery positive terminal (unfused)
CAUTION
Avoid Electronic Control Module Malfunction!
Before turning the battery disconnect switch to the OFF
position, make sure the engine run switch has been off for
at least five minutes. This will avoid engine fault codes
and undesirable operation.
FOR REFERENCE
ONLY

Manitowoc MLC100-1 Specifications

General

Brand	Manitowoc
Model	MLC100-1
Category	Construction Equipment
Language	English