3
PRODUCT DESCRIPTION
3.1
Technical data
3.1.1
Hoist duty class
When the product is designed and purchased, the predicted lifetime of the product is agreed,
based on the expected use of the product. This expected use is known as the duty class. A
hoisting machinery which is used continuously and to lift heavy loads is clearly in a different duty
class than a hoisting machinery of the same size which is used occasionally and to lift light
loads. When the product is used in accordance with the designed duty class, the expected
lifetime should be reached.
The owner is responsible for ensuring that the product is used according to the duty class that
the product has been designed for. By doing so, the product should reach the original predicted
lifetime.
NOTICE
RISK OF PROPERTY DAMAGE
Operating the product outside the limits of the specified duty class raises the risk of
mechanical failure and can shorten the lifetime of the product.
Do not allow the product to be used outside the limits of the specified duty class.
The duty class is based on many factors, including hardware, predicted lifetime, number of
shifts and lifts, distances traveled, ratio of heavy to light items that are lifted, and the
environmental conditions that the product is used in. Note that if you move from single-shift
working to three-shift working, you have to reduce the loads that are lifted or the distances that
are traveled (or both) to remain within the requirements of the duty class.
Parameter
Variables
Lifting height and working
distances
Actual hoisting time and the average distances being traveled
by the trolley and lifting devices
Operating environment
The product is designed to work within specific parameters of
temperature, humidity, and cleanliness.
Product process
Number of shifts
Number of work cycles in an hour and the average lifted loads
Authorized service personnel must check periodically whether the product is used according to
the defined duty class. The owners and operators should recognize that any changes to the
product usage that are left unchecked may result in an increase of the overall maintenance
costs and a considerable decrease of the safe operating lifetime of the product. Changes to any
of the parameters and variables can require that the duty class must be revised.
If there are significant permanent changes in the product usage, authorized service personnel
must revise the duty class and design working period (DWP) as necessary. Changes to
hardware or servicing frequency may be required.
3 PRODUCT DESCRIPTION
This document and the information contained herein, is the exclusive property of Verlinde S.A.S 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 Verlinde S.A.S. Copyright 2020
© Verlinde S.A.S. All rights reserved.
6/2020
