Manitowoc MLC80A-1 - INSPECT ELECTRICAL COMPONENTS; DEGRADATION DUE TO SEVERE ENVIRONMENT

ELECTRICAL SYSTEM MLC80A-1/MLC90A-1/MLC100A-1/MLC100-1 SERVICE/MAINTENANCE MANUAL
3-8
Published 10-09-2020, Control # 259-06
INSPECT ELECTRICAL COMPONENTS
Every Month or 200 Hours
1. Visually inspect all electrical harnesses and cables for
the following:
• Damaged, cut, or deteriorated harness loom
covering
• Damaged, cut, or abraded individual wires or cable
insulation
• Exposed bare copper conductors
• Kinked, crushed, or flattened harnesses or cables
• Blistered, soft, or degraded wires and cables
• Cracked, damaged, or badly corroded battery
terminal connections
• Inspect all machine ground connections for
damaged terminals or excessive corrosion
• Other signs of significant deterioration
If any of these conditions exist, evaluate the harness for
repair or replacement.
2. Visually inspect all Controller Area Network (CAN)
nodes and electrical junction boxes for the following:
• Damaged or loose connectors
• Damaged or missing electrical clamps or tie straps
• Excessive corrosion or dirt on the junction boxes
• Loose junction box mounting hardware
If any of these conditions exist, address them
appropriately.
Degradation Due to Severe Environment
Table 3-1. Climate Zone Classification
Zones A and B
Replace harnesses and battery cables operating in these
climate zones after 8,000 hours of service life. Their
electrical service life is reduced by 25% to 40%.
Zone C
Replace harnesses and battery cables operating in this
climate zone after 10,000 hours of service life.
Zones D and E
Cold temperatures will negatively impact service life.
Regularly inspect electrical harnesses and cable assemblies
per step 1
.
Salt Environment
Harness and cable assemblies operating in salt water
climates could see a significant reduction in service life.
Regularly inspect electrical harnesses and cable assemblies
per step 1
.
DANGER
Electric Shock Hazard!
Ensure that the battery cables are disconnected from the
batteries before loosening any electrical connections.
Zone Description
A
Tropical Moist: All months average above 18° C.
Latitude: 15° to 25° N & S
B
Dry or Arid: Deficient precipitation most of the year.
Latitude: 20° to 35° N & S
C
Moist Mid-Latitude: Temperate with mild winters.
Latitude: 30° to 50° N & S
D
Moist Mid-Latitude: Cold winters.
Latitude 50° to 70° N & S
E
Polar: Extremely cold winters and summers.
Latitude: 60° to 75° N & S
FOR REFERENCE
ONLY