R&M Materials Handling WIRE ROPE HOISTS - Manual (Page 6)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
☎
: (937) 328-5100
FAX: (937) 325-5319
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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
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The useful lifetime of a hoist depends very much on whether the hoist is correctly used or not. Use of
the hoist for other than the hoist group classification for which it was designed changes its useful
lifetime.
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Before hoisting a load, make sure you know a safe and effective path for the load. Ensure that the
load will not collide against objects or people.
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Check that no servicemen or unauthorized persons are on the crane and that the rails and power
cables are clear of obstructing objects.
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Before hoisting, check that the hoisting devices are securely positioned on the bearing surface of the
hook and that the safety catch on the hook is closed.
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Before hoisting, check that the load is balanced and safely fastened at the lifting points.
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Before hoisting, ensure that the load cannot slide, slip or detach itself when suspended.
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Before hoisting, ensure that the ropes are perpendicular and that the hoist is positioned
perpendicularly above the load to be lifted. A load must not be hoisted or dragged along the ground in
a way that causes side pull on the roping unless the hoist is designed and manufactured for this
purpose.
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If two cranes are needed to handle a load, a balancing beam must be used to equalize the loading.
Combined hoisting with two cranes must be supervised by a foreman knowledgeable about cranes, or
by a crane specialist, who is then in overall charge of the lifting operation.
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Start and stop the travelling motion at low speed to prevent the load from swinging excessively. Avoid
swinging the hook or load during travel motion.
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Do not lift people on the hook or load. Lifting people with a hoist is prohibited unless the hoist is
designed and manufactured for that purpose (this must always be agreed with the supplier of the
hoist).
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Do not go under the hook or load. Do not move the hook or load over a person. A load must never be
lifted in a way that can injure a person if the load drops.
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Do not operate the hoist if you know that medication, an illness, injury or other such handicap impairs
your alertness or working ability.
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Do not lift a load that is fastened to its base or that is heavier than the maximum permissible load for
the hoist or lifting accessories. A jerking or static load can cause an overload. A hoist may only be
used for those loads and load combinations, and at those speeds, for which the hoist has been
designed and manufactured.
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Raise the load high enough to prevent it from hitting objects during travel. However, do not raise it
higher than is necessary for the situation. Do not raise the hook to the top safety limit.
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During hoisting and travel motion, ensure that the hook, the load, the crane and its moving parts do
not collide with objects or people.
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If the hoist is provided with a horn, sound the horn when you move the load in the vicinity of people
who are not paying attention to the moving load.
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Do not move the load until you have received a signal from the person attaching the load to the hook
or lifting appliance.
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Do not use the overload protection for weighing the load.
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Stop all hoisting and travel motions before the safety limit switches.
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Do not adjust or bypass the limit switches or warning devices in order to go past motion limits. Do not
use the hoist if the limit switches are inoperative.
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If the manually-adjusted backup limit switch in the hoist has triggered, call a serviceman to the hoist
and ask him to determine why the normal safety limit switch did not function.
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Do not use the hoisting rope as a lifting lug.