14.6 Replace the Control Unit
1. For easy installation, move the mattress base to the highest position.
2. Unplug the mains cable.
3. Unplug the IEC connector from the control unit. To do this, use a screwdriver to slightly press
the red security hooks together on the IEC connector.
4. Mark or label the position of all cables that are connected. By doing so, you will prevent mixing
the sockets up when inserting the re-assembled components.
5. Carefully lift the locking device over the plugs of the control unit using a screwdriver.
6. Disconnect the handset plug and all motor cables from the control unit.
7. Disconnect the earth wire of the mains cable from the control unit to the bed (M-4 bolt right
next to the mains connection)
8. Remove the 4 fastening screws fixing the control unit to the bed and replace the control unit
with a new one
9. Carry out the installation work in the reverse order to the one described above; see also: Re-
place handset with a new one, replace mains cable with a new one
10. Please note the maximum torque for all fastening screws of 1.5 Nm.
11. Please note when reconnecting the earth wire to the M4 bolt of the control unit:
Slip the cable shoe onto the bolt.
Place the spring washer on the bolt and replace both nuts. Tighten these fully
(torque: 1.5 Nm).
Tighten both nuts to prevent inadvertent loosening.
12. Carry out an electrical measurement!
13. Test the motorised adjustments to ensure that they work correctly!
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