Hoist Limit Devices; General Recommendations - R&M LOADMATE LM01 Operator's Manual

Electric Chain Hoist Operator's Manual/EN/11.30.10
5.5

Hoist Limit Devices

Powered hoists must be equipped with an upper limit device that will prevent the hoist load block from
exceeding the upper limit of travel. Depending on the shape or size of the load being lifted, it may be impossible
for some part of the load to come into contact with some part of the hoist, trolley, crane, or building structure
before the load block reaches the upper limit of travel. The operator must consider this possibility when it is
required to lift the load to a level of close proximity to the hoist.
Powered hoists may have additional travel limit devices depending on the specific purchase specifications of the
hoist. However, in such cases, the upper limit device that is activated to stop the upper limit of travel is
considered the primary upper limit device.
Operation of the primary upper limit device, on powered hoists, is one of the items the hoist operator must check
during the daily inspection to be performed at the start of each shift, or at the time the hoist is first used during
each shift.
m
CAUTION: The primary limit device that controls the upper limit of travel is an emergency device
only. It shall not be used as an operational means to stop travel during normal operations.
5.6

General Recommendations

It is Recommended that the Operator:
SHALL
SHALL
SHALL NOT
SHALL NOT
This document and the information contained herein, is the exclusive property of R&M MATERIALS HANDLING, INC. and represents a non-public, confidential and proprietary trade
secret that may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M MATERIALS
HANDLING, INC. . Copyright © (2010) R&M MATERIALS HANDLING, INC. . All rights reserved.
know hand signals used for hoist and crane operations if a signal person is used
in the operation, and accept signals of only persons authorized to give hand signals.
obey a stop signal regardless who gives it.
adjust or repair a hoist unless qualified and authorized to perform maintenance.
use the hoist limiting device or load warning device (if provided) to measure
the load to be lifted.
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