Manitowoc National Crane NBT40-1 Series User Manual

SAFETY PRECAUTIONS - CRANE NBT40-1 SERIES OPERATOR MANUAL
2-28
3-29-2018 Control # 610-00
Exercise care when servicing the hydraulic system of the
equipment, as pressurized hydraulic oil can cause serious
injury. The following precautions must be taken when
servicing the hydraulic system:
• Follow the manufacturer’s recommendations when
adding oil to the system. Mixing the wrong fluids could
destroy seals, causing component failure.
• Be certain all lines, components, and fittings are tight
before resuming operation.
Tires
Inspect the tires for nicks, cuts, embedded material, and
abnormal wear.
Ensure all lug nuts are properly torqued.
Ensure pneumatic tires are inflated to the proper pressure.
When inflating tires, use a tire gauge, clip-on inflator, and
extension hose which will permit standing clear of the tire
while inflating.
Hoist Rope
Synthetic Hoist Rope
For detailed information concerning synthetic hoist rope,
refer to K100™ Synthetic Crane Hoist Line Manual P/N
9828100734 available by contacting Manitowoc Crane Care.
During installation and setup, care must be taken to avoid
overlap and crossing of wire rope and synthetic hoist ropes.
Always make daily inspections of the hoist rope, keeping in
mind that all hoist rope will eventually deteriorate to a point
where it is no longer usable. Refuse to work with worn or
damaged hoist rope.
During regular inspections, operator shall ensure that
equipment surfaces such as wear pads, sheaves, etc have
not been damaged in a manner that can then damage the
synthetic hoist rope.
Example; if usage of a wire rope has cut grooves with sharp
edges in a wear pad, they need to be addressed before the
synthetic hoist rope is used in that same position.
Wire Rope
Use only the rope specified by National Crane as indicated
on the equipment’s Load Chart. Substitution of an alternate
rope may require the use of a different permissible line pull
and, therefore, require different reeving.
NOTE: Rope may be purchased by contacting Manitowoc
Crane Care.
Always make daily inspections of the rope, keeping in mind
that all rope will eventually deteriorate to a point where it is
no longer usable. Refuse to work with worn or damaged
rope. Rope shall be taken out of service when any of the
following conditions exist:
• For rotation-resistant running ropes: more than two (2)
broken wires in a length of rope equal to six (6) times the
rope diameter, or more than four (4) broken wires in a
length of rope equal to thirty (30) times the rope
diameter.
• For running ropes other than rotation resistant: six (6)
broken wires in one rope lay or three (3) broken wires in
one strand.
• One valley break where the wire fractures between
strands in a running rope is cause for removal.
• Abrasion of the rope resulting in a 5% reduction in the
original wire diameter.
• Any kinking, bird caging, crushing, corrosion, or other
damage resulting in distortion of the rope structure.
• Rope that has been in contact with a live power line or
has been used as a ground in an electric circuit (eg.
welding) may have wires that are fused or annealed and
must be removed from service.
• In standing ropes, more than three (3) breaks in one
rope lay in sections beyond the end connection or more
than two (2) broken wires at an end connection.
• Core deterioration, usually observed as a rapid
reduction in rope diameter, is cause for immediate
removal of the rope.
The following is a brief outline of the basic information
required to safely use wire rope.
• Wire ropes wear out. The strength of a rope begins to
decrease when the rope is put to use and continues to
decrease with each use. Rope will fail if worn-out,
overloaded, misused, damaged or improperly
maintained.
• The nominal strength, sometimes called catalog
strength, of a rope applies only to a new, unused rope.
WARNING
Possible equipment damage and/or
personal injury!
Driving the equipment with a tire and split-rim assembly
under inflated at 80% or less of its recommended
pressure can cause the wheel and/or tire to fail. Per
OSHA Standard 1910.177(f)(2), when a tire has been
driven under inflated at 80% or less of its recommended
pressure, it must first be completely deflated, removed
from the axle, disassembled, and inspected before re-
inflation.

Manitowoc National Crane NBT40-1 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40-1 Series
Category	Construction Equipment
Language	English