R&M Materials Handling WIRE ROPE HOISTS - Manual (Page 7)

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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Do not use the hoist if there are visible defects in or damage to the hoist, the hoisting rope, or any
other hoist structure or hoist function. Stop operating the hoist if it operates abnormally (for example,
a high noise level, uneven starting or malfunctions). Using faulty equipment is strictly prohibited.
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If defects have been noticed in the hoist, carry out the necessary inspections and servicing. Ensure
that the hoist operates properly before you start to use it again.
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Do not use the limit switches to stop the motions of the hoist. Hoist motions must be stopped with the
pushbutton controller or other control device intended for the purpose.
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Use the proper pushbuttons intended for controlling the hoist. If you feel you are losing control of the
hoist motions, press the emergency stop button. In a potentially dangerous situation all hoist motions
can be stopped by pressing the emergency stop button, but do not use the emergency stop function
unnecessarily. Ensure that it is safe to re-commence working after the emergency stop button has
been pressed.
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Avoid short, jerky motions. Unnecessary short starts cause the hoisting motor to overheat quickly.
The last controller step is for normal drive. The intermediate steps are normally used for short
durations only. Do not switch the controller back and forth unnecessarily because it causes wear.
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Avoid violent collisions into other hoists or against the buffers.
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Do not leave a suspended load unattended.
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Do not lower the hook so far that the ropes become slack.
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Do not pull a load from the side. Lower the load with the ropes perpendicular.
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Do not use hoist motions to remove the load from the hook.
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Do not weld on a hook that is not isolated. Do not fasten a welding electrode to the hoisting rope.
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Do not change the size of fuses. A qualified electrician should carry out all electrical work.
2.5 Safety instructions for finishing work with the hoist
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Follow these instructions when you finish working with the hoist:
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Raise the empty hook or loading device high enough to avoid it causing a hazard to traffic, but not to
the top safety limit.
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Leave all controls in the 0-position.
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Press the emergency stop button to open the main contactor.
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Turn off the safety switches for control current and main current.
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Close any mechanical brakes, such as rail clamps, etc.
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Inform your foreman of any defects you have noticed.
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Inform the next operator of all abnormalities in equipment or operation that you noticed.
2.6 Safety instructions for servicing the hoist
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Follow these instructions when servicing the hoist:
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Carry out regular inspections and preventive maintenance in compliance with the instructions. Keep a
record of inspections and servicing. Regular servicing and inspection procedures are necessary for
the safe and efficient operation of the hoist. In uncertain or unusual cases, contact the supplier of the
hoist.
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Pay special attention to the operation of the brake and limit switches, and to the condition of the hook,
rope and pushbutton controller. It is essential that safety devices (overload protectors, limit switches,
etc.) work correctly and are in full operating order because they safeguard against human error.