2.4
Safety devices
WARNING! MACHINE MALFUNCTION HAZARD
Removing or modifying the safety devices could cause malfunction of the safety
devices, which could lead to death, severe injury, or property damage.
Do not remove or modify any safety devices on the equipment without written approval
from the manufacturer.
2.4.1
Hoist
Device
Description
Emergency stop button
The emergency stop button is used to turn off power to the
system in dangerous situations. The emergency stop button
cuts the supply voltage to the system from the main contactor.
Always eliminate the danger before releasing the emergency
stop button. There are several types of emergency stop
buttons, but they are always red.
Slipping clutch
The slipping clutch protects the machinery against
overloading. Overload occurs at around 110% of the rated
capacity of the hoist. When activated (at around 150% - 160%
static load), the slipping clutch prevents further hoisting but it
is still possible to lower the load. Never use the slipping clutch
to assess the weight of the load.
Secondary brake (holding
brake) (option)
If the hoisting brake fails, the secondary brake (holding brake)
supports the load. The secondary brake closes just after the
hoisting brake, and opens just before the hoisting brake. For
more information, see chapter Checking the brake lining.
Upper and lower mechanical
or magnetic limit switch
If the hook moves too high or low, the mechanical or magnetic
limit switches prevent the possible damage to the equipment.
When the chain stop touches the limit switch or is close to the
hoist frame, the limit switch is activated. The activation of the
limit switch stops the hook movement. The upper limit switch
stops the upward hook movement, and the lower limit switch
the downward hook movement. However, it is not
recommended to use the mechanical or magnetic limit
switches as operational end stops.
2.5
Protective measures
2.5.1
Emergency stopping
WARNING! UNCONTROLLED MOVEMENT HAZARD
Emergency stopping could cause the equipment to move or operate in an uncontrolled
manner which could lead to death, severe injury, or property damage.
Only use the emergency stop button in an emergency situation.
In an equipment malfunction or other emergency situations, you can stop all motions
immediately by pressing the red emergency stop button. In normal operation, do not use the
emergency stop button. Instead, use the direction controls. Routinely using the emergency stop
button increases wear on the product.
NOTE
Only operate the equipment if you know the location of the emergency stop button.
OWNER’S MANUAL
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
