Stiegelmeyer Libra - Replacing the Control Unit; Initializing the Control Unit

Instruction Manual for Libra Care Bed
Page 104
6.5.5 Replace the control unit
• Unplug the switch mode power supply from the mains socket.
• Release the catches of the plug cover (on both sides).
• Mark the plug positions to avoid mixing them up when they are re-assembled (see
chapter 6.5.1 ).
• Unplug all plugs/connecting cables from the control unit.
• Remove the old control unit from its holder.
o To do this, remove the two brackets on the holder.
• Insert the new control unit and secure it using the brackets.
o Plug all plug connections back into the corresponding sockets (see chapter
6.5.1 ).
o Make sure that the O-rings on the plugs are present and undamaged. These
seal the plugs into the control unit.
• When routing the handset cable, ensure that it cannot be damaged by any moving
parts of the bed.
• Put the plug cover back in place. This prevents all the plugs from being pulled out
of the control unit.
• Move the bed completely up or down. This enables the control system to detect
the intermediate stops of the bed.
• To complete the process, check that all the electrical bed adjustments function
properly, in accordance with chapter 6.5.6!
6.5.6 Initialise the control unit
The initialisation process involves carrying out a reference run, during which the
current positions of the drives are communicated to the control unit. This ensures that
the regulation of parallel running and the adjustment stroke restrictions work
accurately.
When is this necessary?
• After replacing the control unit or one or both of the mattress base height
adjustment motors
• If height adjustment of the mattress base is not possible or only possible to a
limited extent
- When initialising the control unit, it is important that none of the functions are
locked on the handset!
- Any restrictions on lowering the mattress base height which have been
saved will be lost.
- There must be no pauses longer than 6 seconds between the steps without
pressing a key. The system will otherwise revert to the normal operating
mode without completing the initialisation.