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Warning
• The actuator must not be used in pull applications when the Quick Release is activated, as the risk of personal injury can arise.
• Bowden cable must click twice, in order to be locket sufficiently.
• The actuator must not be used in pull applications when the Quick Release is activated, as the risk of personal injury can arise.
• Bowden cable must click twice, in order to be locket sufficiently.
• Do not sideload the actuator.
• Inspect the actuator minimum once a year for wear and jarring sound.
• The actuator is not designed for repeated dynamic push-to-pull movement.
LA31 actuators for patient hoists are marked with a label to ensure the user is aware that it is not permitted to handle the patient hoist
by pulling the actuator or otherwise expose it to side forces.
LA31 with mechanical end stop - a first failure safe option:
In many applications our customers have approvals according to EN 60601-1.
The typical applications can be beds, massage couches etc.
In the norm, EN 60601-1, it is mentioned that the application must be first failure safe.
The manufacturer is responsible for making a risk analysis in order to check this. If a risk is identified, it is the manufacturer of the application who
makes sure that the risk is eliminated.
There are several ways that an application can be made first failure safe:
• Use a mechanical stop in the application
• Use of a mechanical end stop in LA31 - is a possible option.
• Use an SLS (safety limit switch) in connection with the actuator.
• As a special solution we can offer LA31 with mechanical end stop with the same installation dimension as a standard LA31.
LA31 with manual lowering
The purpose of the ML (Manual Lowering) is in case of a power failure, to be able to mechanically lower a patient by turning the ML part in the clockwise
direction until the actuator is fully lowered.
Recommendations
• An addition of 35 mm to installation dimension compared to standard (with spline)
• Only for push applications
• Use spline actuators
• Cannot be retro fitted
Warnings
To avoid damage to the actuator
When the application is in the “rest” position there should be no load/tension on the actuator.
If electrical end stop fails to function the actuator will continue to retract or extend until mechanical end stop is reached.
The application of the customer must be able to obtain or withstand an actuator with failing electrical end stop.
Minimum length of actuator reaching mechanical end stop: nominal BID - 7 mm.
Maximum length of actuator reaching mechanical end stop: nominal BID + nominal SL + increase + 7 mm.
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