Manitowoc 2250 Service Maintenance Manual

Reference Only
Manitowoc Published 07-19-16, Control # 249-01 3-1
2250 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
3
SECTION 3
ELECTRICAL SYSTEM
ELECTRICAL DRAWINGS AND
SCHEMATICS
Applicable electrical system drawings and schematics are
located at the end of this section.
INSPECTING OR REPLACING ELECTRICAL
COMPONENTS
Electrical Harnesses and Cables—Monthly
or 200 Hour Service Life Inspection
Visually inspect all of the electrical harnesses and cables for
the following conditions:
• 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
• Damaged terminals or excessive corrosion at the
machine ground connections
• Other signs of significant deterioration
If any of these conditions exist, evaluate the harness for
repair or replacement.
Electrical Junction Boxes—Monthly or
200 Hour Service Life Inspection
Visually inspect all of the electrical junction boxes for the
following conditions:
• 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.
Electrical Harnesses and Cables—Service
Life
Electrical harnesses and cables potentially have different
service lives based on the climate zones they are operating
in. Take into consideration if the crane is moved and
operated in different climate zones. The service life will be a
combination of the recommended intervals. See Table 3-1
for the following items:
• Harness and battery cables operating in Zone C are
recommended to be replaced after 10,000 hours of
service life.
• Harness and cables operating in Zone A and Zone
B with high ambient temperatures and high-duty
circuits could see electrical service life reduced by
25% to 40%. It is recommended to replace these
assemblies after 8,000 hours of service life.
• Harness and cable assemblies operating in climate
Zone D and Zone E should expect a degrade of
mechanical properties. Long-term exposure to
these cold temperatures will negatively impact the
service life. It is recommended for these electrical
harnesses and cables to be inspected monthly or
every 200 hours, since service life may be more
than 10,000 hours.
• Harness and cable assemblies operating in salt
water climates could see a significant reduction in
service life. Therefore, it is recommended for these
electrical harnesses and cables to be inspected
monthly or every 200 hours, since service life may
be more than 8,000 hours.
Table 3-1. Climate Zone Classification
DANGER
Electrical Shock Hazard!
Prevent personal injury from electrical shock.
Ensure that the battery cables are disconnected from the
batteries before loosening any electrical connections.
Item 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

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English