Retrofitting security device in electric adjustable beds

August 2004

Due to a tragic accident case (Vause No. 0785/03), the BfArM (Federal Institute for Drugs and Medical Devices) made new requirements for electric adjustable beds.
In this tragic event no Dewert product was involved, and no actuator that is identical to the used by us Hanning engine.

In anticipation of the future DIN EN 60601-1 allows this, that all electrically adjustable beds (all brands) shall be fitted with safety equipment.
This safety device designed to enable a locking of the engine, thus inadvertently or unintentionally can not be activated.

This affects all manufacturers.

 

 

Art-Nr. 1996 Safety device
Art-Nr. 1996 Safety device
Art-Nr. 1990 Safety box for Dewert couches
Art-Nr. 1990 Safety box for Dewert couches

With new orders from electric adjustable chairs you can choose between two systems:

1) Ref. 1993 control box for Dewert couches

Function, see also Ref. 1990 control box for Dewert couches

2) Ref. 1995 Safety device

The safety device consists of a lockable switch with emergency stop function.
This interrupts the necessary air pressure to activate the motor pulse and the motor can be stopped (emergency stop function).
If the switch locked, it can be unlocked only by a key in it (capping to unlock only by authorized persons).

This button is placed within easy reach just below the upholstery.

About the security device developed by us, we can create by an independent, neutral body (RW TUV Essen) a report which has been accepted by the District government responsible for us in Detmold.

This new safety device includes:

- E-Stop function while the engine run
- Fast optical detection by striking red button
- Easy access by positioning below the pad surface

Retrofitting

All currently lying on the market necessarily have to be retrofitted with according to the BfArM.

Risk: the case of products without this safety device may be caused by accidental or unintentional activation of the electric motor to get people hazards.
This means that a bed is not in unattended condition, available to others,
may be dropped. 
By activating the motor (whether intentionally or inadvertently) by unauthorized persons may cause injury.
Therefore, when leaving the room by the user of the plug and pull to retrofit the couch soon!

Retrofitting

The retrofitting can be done without much effort on their own after training / default, since no intervention must be made in the electrical system of the couch.
It only has the existing power cable with another with an integrated control box are swapped. Furthermore, the control box with a bracket on the base of the couch is attached to.
The retrofit kits are not free.

The locking is performed by a magnetic key. With removal of the control box the power supply to the motors / engines will be interrupted.

Art-Nr. 1995 Sicherheitseinrichtung
Art-Nr. 1995 Sicherheitseinrichtung

Neubestellung

Bei Neubestellungen von elektromotorisch verstellbaren Liegen
kann zwischen 2 Systemen ausgewählt werden:

1.) Art-Nr. 1993 Sperrbox für Dewert-Liegen

Funktion siehe auch Art-Nr. 1990 Sperrbox für Dewert-Liegen

2.) Art-Nr. 1995 Sicherheitseinrichtung

Die Sicherheitseinrichtung besteht aus einem abschließbaren Taster mit Not-Halt-Funktion.
Dieser unterbricht den zur Aktivierung des Motors notwendigen Luftdruck-Impuls und der Motor kann jederzeit gestoppt werden (Not-Halt-Funktion).
Ist der Taster verriegelt, so kann er nur durch einen Schlüssel wieder entriegelt werden (Verschließfunktion, nur durch Befugte zu entriegeln).

Diese Taster ist leicht erreichbar direkt unterhalb des Liegenpolsters angebracht.

Über die von uns entwickelte Sicherheitseinrichtung haben wir von einer unabhängigen, neutralen Stelle (RW-TÜV in Essen) ein Gutachten erstellen lassen, das von der für uns zuständigen Bezirksregierung in Detmold anerkannt worden ist.

Diese neue Sicherheitseinrichtung beeinhaltet:

- Not-Halt-Funktion, während des Motorlaufes
- schnelle optische Erkennung durch auffälligen roten Taster
- leichte Erreichbarkeit durch Positionierung unterhalb der Polsterfläche