6.1 FOREWORD
Power operated hoists are widely used in industry, often as part of a larger lifting installation, e.g. with an overhead runway, jib crane or overhead travelling crane, or where a permanent lifting facility is required. They may also be used for fixed position lifting applications or where a temporary powered lifting facility is required.
Power operated hoists are readily available with electric or pneumatic operation, but the most common in general use at the present time will be found to be electrically operated. This section of the code therefore has been written on the basis of electric power operated hoists and those matters which are common to all types of power operated hoists. Specific matters relating to pneumatic power operated hoists are then dealt with in an appendix to this section.
Power operated hoists are ideal for heavier or repetitive lifting applications as they offer the following advantages over manually operated chain hoists:
Speed of operation.
Less fatigue for operatives, particularly on long lifts.
Operatives may be remote/away from the load.
Most manufacturers and suppliers offer a range of accessories such as power feed systems, slack chain collecting boxes, weatherproof covers and remote control units.