Replacement of Electrical Components
Changing the Lead-Acid Battery
14.3 Changing the Lead-Acid Battery
Rechargeable batteries must be replaced once they have reached the end of their service
life! Spare parts can be obtained from the manufacturer.
Risk of Explosion
Before the installation work, make sure that the battery set is correctly connected. Please
refer to the drawing in the battery compartment and check that all connections are seated
correctly.
The battery compartment has been hermetically sealed from the electronics compartment by
the manufacturer. When replacing batteries, this insulation must not be damaged or altered, as
this could result in battery gases penetrating into the electronics compartment and causing an
explosion in extreme cases.
When changing batteries, the sealing material of the housing (silicone ring or joint sealer) must
not be damaged and must be correctly replaced in the joint afterwards. The screws in the
housing must be tightened to a torque of approx. 1 Nm.
The battery compartment has its own fan. This must not be obstructed or covered as otherwise
pressure could build up and an explosion could occur.
Risk of Crushing
For safe and easy installation, move the mattress base and the backrest to the highest position.
Proceed as follows:
1. For easy installation, move the mattress base to the highest position.
2. Unplug the mains cable.
3. Remove the Torx screws on the underside of the control unit.
4. Replace the lead-acid battery pack with an identical one. In doing so, pay attention to the installation
instructions on the inside of the housing cover.
5. Fasten the housing cover with the four Torx screws. Make sure that the silicone seal is correctly posi-
tioned!
6. Insert the mains plug into an electrical socket. The LED on the control unit must light up green, and the
battery charge display on the control box must light up orange.
7. Test the function of the power adjustments!
8. Charge the lead-acid battery. To do so, connect the bed to the mains supply for at least 8 hours. Only
then is the battery ready for unrestricted emergency use.
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