3.3 Instructions for the ride manufacturer
All of the necessary safety equipment, safety functions and the safety controller should be provided
by the machine manufacturer.
The following functions must be assured on the ride/machine, and supplemented with other measures
according to your own risk assessment:
Personal safety
■
Malfunctions on the ride can be safely remedied, and do not pose a risk to the hydraulic locking unit.
■
The ride in which the hydraulic locking unit is installed fully complies with all legal requirements.
■
A failure of the electrical power supply to the hydraulic locking unit does not pose any risk.
■
A main switch and an emergency stop function are integrated into the ride, or in a higher-level
control system.
■
It is not possible for persons to reach into the hazard zone of the hydraulic locking unit.
■
Persons cannot be endangered by movement of the restraint system.
■
Persons cannot randomly or unintentionally open the restraint system/hydraulic locking unit.
■
Persons cannot burn themselves on hot surfaces. After the hydraulic locking unit has been installed in
the ride, place signs to identify hot surfaces that could endanger persons.
Construction and control
Maximum loads in drawings and product documentation are calculated according to DIN EN 13814.
For locking units on seat classes
*
4 and 5 a 70/30 load distribution was applied, and for locking
units on seat class
*
3 a direct load of 100%. The loads relate to the linear forces acting directly on
the piston rod of the hydraulic locking unit.
If the restraint system is not safeguarded by redundancy, the maximum permissible holding forces
must be recalculated. Get in touch with HAWE Micro Fluid GmbH.
*
Seat classes dened in DIN EN 13814
Installation and control of the hydraulic locking unit is to be implemented by the ride manufacturer.
The following supplementary functions and design measures should be added according to your own risk
assessment, and must be integrated into the ride control system.
■
The hydraulic locking unit must not be used as a mechanical end stop for the bar structure.
■
Pay attention to the specic seat kinematics of the ride.
■
The limits specied in the technical data sheets (especially the retraction and extension speeds) must
not be exceeded.
■
Observe the requirements of DIN EN 13814 and the HAWE Load Case Denition.
■
Protect the hydraulic locking unit against harmful environmental effects resulting from the construc-
tion of the ride or seat, such as very salty water, water containing chemical additives, or other caustic
and corrosive liquids.
■
Note that if type RE is installed, an opening aid (such as a gas spring or leg spring) is required to
drive the opening motion and to keep the restraint system open.
■
Note that if type DL (EX) is installed the necessary holding forces and leak-proong for locking in the
locking direction (primary function) are assured solely by valve V1.
■
Note that if type DL (RE) is installed the necessary holding forces and leak-proong for locking in the
locking direction (primary function) are assured solely by valve V2.
■
Monitor the emergency override button on (V1) and (V2) so that the lock cannot be released uninten-
tionally.
■
The control system must ensure that the 2/2-way valve is prevented from being energized, and
thereby opening, while the ride is running.
■
Observe the switching logic on page
.
- V2 on type DL (EX) acts solely for comfort locking.
- V1 on type DL (RE) acts solely for comfort locking.
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HAWE Hydraulik SE
