EUROBLOC
SERVICE MANUAL FOR HOIST
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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 © (2013) Verlinde S.A.S. All rights reserved.
06/2015
5.3
Approaching Theoretical Calculated Lifetime
In order to ensure safe operation of cranes, the proper working and operational condition shall be maintained
according to standard ISO 9927.
This requirement covers also special assessments to be carried out by an expert engineer at regular intervals to
check the remaining Safe Working Period (SWP) of the hoist as stated in standard ISO 12482-1.
The condition monitoring unit (CID) (if fitted) provides two different SWP values: the runtime-based SWP (CID
parameter 2-12 SWPRT% ), and the working cycle-based SWP (CID parameter 2-15: SWPHC%). The CID display
of the data counter SWP always shows the lesser value of two parameters.
If the component does not have a condition monitoring unit, use the method explained in the APPENDIX: SAFE
WORKING PERIOD (SWP) CALCULATION to calculate the remaining SWP%.
5.3.1 General Overhaul
In the GO service, the product is assigned with a new, runtime-based SWP, provided that it is safe to continue the
operation. The runtime-based SWP means the lifetime of the interchangeable rotating components of the hoist like
hoisting gear, hoisting motor, and rope sheaves. Note that in case of hoists with a smaller drum size, it is often
more cost-efficient to replace the hoist with a new one.
WARNING
When the Safe Working Period (SWP) of the hoist has decreased to zero or is
counting in the negative, the hoist may only be used after a GO service has
been conducted, or the hoist must be replaced with a new one. Any usage of a
defective hoist can result in serious damage, injury, or death.
CAUTION
When performing General Overhaul, the construction of the hoist may not be
changed or the supporting structures repaired without permission from the
manufacturer. If there are any deformations, cracks or corrosion in the
supporting structures of the hoist, the parts have to be replaced or repaired
according to the instructions given by the manufacturer.
Only authorized service personnel or an experienced service man that is authorized by the manufacturer or
manufacturer representative may conduct a General Overhaul service.
The following figure summarizes the conditions based on which General Overhaul can be performed.
