EUROBLOC
GENERAL OVERHAUL INSTRUCTIONS
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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.
09/2016
7 GENERAL OVERHAUL PREPARATIONS
When CID data indicates General Overhaul service, the hoist rope drum should be inspected when yet assembled
on the crane for possible critical defects that justify the replacement of the drum.
The replacement, however, is not cost-efficient for drums of frame size: VT3. Refer to chapter “Rope drum” for
more instructions.
General Overhaul requires the removal of the hoist and trolley unit from the crane to the floor level. While the hoist
is still assembled on the crane:
Refer to chapter “Rope guide” and inspect the operation of the rope guide to determine worn or defective parts.
The guide must apply the wire rope properly into the grooves of the drum and the roller must apply pressure to
the laid rope.
Refer to chapter “Rope pressure roller” and inspect the operation of the pressure roller.
Use established safe rigging and handling procedures in lowering the hoist down to the floor level, onto a firm table
or equivalent. If the hoist is dirty, clean it with a cleanser designed for the purpose. A clean, well-illuminated space
is needed to perform the service work, as the whole hoist must be disassembled.
7.1
Gathering information on current hoist components
In the preparation phase, collect the required identification data (product codes/serial numbers) of the hoist
components into the “Usage and Safety Assessment” form. For example, in case of the hoisting and traveling
motors, you can collect the data from the stickers attached to the components. For more information, see chapter
“Identification”.
In case a sticker is damaged or missing, you can also find the information in the certificates provided by the
manufacturer.
7.2
Gathering parameter data from the condition monitoring unit
Before starting the GO, write down the following parameter data from the condition monitoring unit into the “Usage
and Safety Assessment” document:
Menu 1:
Parameter
Name
Value
Description
1-1-2
Starts
"n" %
Total number of starts of the hoist in either up or down direction.
1-1-3
Runtime
"n" h
Total running time of the hoist in hours.
1-1-6
Br SWP%
"n" %
Remaining Safe Working Period of the brake in percentage. The SWP for the brake is
calculated according to the number of Starts and E-stops.
Menu 2
Parameter
Name
Value
Description
2-5
No.OL
“nnn”
Total number of overload incidents
2-7
ST up
“nnnn”
Number of control actions: compare these three parameters with each other and write down
the highest value.
2-8
ST down
“nnnn”
2-9
ST fast
“nnnn”
2-12
SWPRT%
“nn”%
SWP% value calculated with hoist running time.
2-15
SPWHC%
“nn”%
SWP% value calculated with hoist cycles.
7.3
Tools needed for General Overhaul service
The GO service of a hoist takes 1 to 3 days and you need the following tools in the work:
