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
7.1.9 Drum Brake
The drum brake has been designed as an extra safety device to the hoist. To obtain the maximum safety, it
operates mechanically and applies directly to the rope drum. Drum brake has three different configurations, that is,
holding brake, overspeed brake, and a construction with both holding and overspeed brake functions.
CAUTION
Drum brakes are tested and adjusted by the hoist manufacturer prior to
delivery. Only qualified personnel, authorized by the manufacturer may install,
adjust and service the drum brake.
CAUTION
Service and maintenance of the drum brake must be done at regular intervals
as recommended by the manufacturer.
CAUTION
The drum brake must always be kept clean. The braking torque reduces
strongly if any grease or oil penetrates to the friction surfaces.
7.1.9.1 Construction of Holding Brake
The holding brake acts as a second brake and mechanically locks the drum when the hoisting or lowering motion
has stopped. When the operator starts hoisting or lowering, the holding brake is released and driving upwards or
downwards is possible. However, in case the main brake has slipped during standstill, the cam may be locked
against the brake rim (1) and the electromagnet is not able to release the cam. In this case, it is necessary to drive
the hoist in upward direction to release the drum brake.
CAUTION
Do not drive the hoist in the upper stop limit switch when handling heavy
loads. Stop lifting as soon as the hoist enters the upper slow down limit.
In case the holding brake locks frequently, it may indicate wear of the main brake.
1.Brake rim
2.Disc springs
3.Screw
4.Detent arm
5. Brake rim teeth
6 Limit switch
7 Axle
8 Solenoid