GROVE
Published 10-21-2011, Control # 055-03
2-15
5540F/YB5515 OPERATOR’S MANUAL
SAFETY INFORMATION
2
periodically. Refer to the
Service Manual
for more
information.
•
In the U.S.A., regular inspections of the wire rope and
keeping of permanent records signed by a qualified
person are required by OSHA for almost every wire rope
application. The purpose of the inspection is to
determine whether or not a wire rope may continue to be
safely used on the application. Inspection criteria,
including number and location of broken wires, wear and
elongation, have been established by OSHA, ANSI,
ASME and similar organizations. See the
Service
Manual
for inspection procedures.
When inspecting wire ropes and attachments, keep all
parts of your body and clothing away from rotating hoist
drums and all rotating sheaves. Never handle the wire
rope with bare hands.
Some conditions that lead to problems in wire rope
systems include:
-
Sheaves that are too small, worn or corrugated
cause damage to a wire rope.
-
Broken wires mean a loss in strength.
-
Kinks permanently damage a wire rope and must be
avoided.
-
Wire ropes are damaged by knots. Wire rope with
knots must never be used.
-
Environmental factors such as corrosive conditions
and heat can damage a wire rope.
-
Lack of lubrication can significantly shorten the
useful life of a wire rope.
-
Contact with electrical wires and resulting arcing will
damage a wire rope.
•
An inspection should include verification that none of the
specified removal criteria for this usage are met by
checking for such things as:
-
Surface wear; nominal and unusual.
-
Broken wires; number and location.
-
Reduction in diameter.
-
Rope stretch (elongation).
-
Integrity of end attachments.
-
Evidence of abuse or contact with another object.
-
Heat damage.
-
Corrosion.
NOTE:
A more detailed wire rope inspection procedure is
given in the
Service Manual
.
•
When a wire rope has been removed from service
because it is no longer suitable for use, it must not be
reused on another application.
When installing a new rope:
•
Keep all parts of your body and clothing away from
rotating hoist drums and all rotating sheaves.
•
Never handle the wire rope with bare hands.
•
Follow proper instructions for removing rope from a reel.
•
Apply back tension to the storage/payoff reel of the new
rope to insure tight, even spooling onto the hoist drum.
•
Operate the new rope - first through several cycles at
l i g h t l o a d a n d t h e n t h r o u g h s e v e r a l c y c l e s a t
intermediate load to allow the rope to adjust to operating
conditions.
When using a wedge socket:
•
Always inspect socket, wedge, and pin for correct size
and condition.
•
Do not use parts that are damaged, cracked, or
modified.
•
Assemble the wedge socket with live end of rope aligned
with the centerline of pin and assure proper length of tail
(dead end) protrudes beyond the socket.
Sheaves
Inspect the boom nose and hook block sheaves for proper
operation, excessive wear, and damage every 50 hours or
weekly. Inoperable, damaged and/or worn sheaves cause
rapid deterioration of wire rope.
Ensure sheaves carrying ropes that can be momentarily
unloaded are equipped with close fitting guards or other
devices to guide the rope back into the groove when the load
is reapplied. Ensure sheaves in the lower load block are
equipped with close fitting guards that will prevent the ropes
from becoming fouled when the block is lying on the ground
with loose ropes.
Reference Only
