Harrington Hoists and Cranes (N)ER Load Limiter - ((N)ER2) - Manual (Page 4)

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1.2 Product Overview
The product covered by this manual is Harrington’s Load Limiter (LL) for use with Harrington’s ER2/NER2 Series of
electric chain hoists. The LL is an optional accessory that employs a load sensing device and electric switch. Actuation
causes the hoist’s lifting circuit to be disabled, while still allowing the hoist to be used in the lower mode. The purpose
of the LL is to protect the hoist from damage associated with lifting loads that exceed the hoist’s capacity.
WARNING
The Load Limiter does not prevent loads greater than the hoist’s rated capacity from being
applied to the hoist. The Load Limiter functions only to prevent lifting a load that exceeds the hoist’s rated capacity. It
does not indicate or prevent the application of such loads. The Operator of the hoist must ensure that the load applied
does not and will not exceed the hoist’s rated capacity. The principle is illustrated by the following:
A one ton hoist equipped with a Load Limiter is used to lift an empty container weighing 500
lbs. While suspended from the hoist, the container is filled full. After filling is completed, the
container weighs 2,500 lbs., which exceeds the 2000-lb. rating of the hoist. The load limiter
will not indicate or prevent this condition. It will only prevent lifting the filled container higher.