Hermann Bock practico ultra low 9.5/80, Installation And User Manual, Page: 29 / 40

29
properly in accordance with the requirements of the Waste Electrical and Electronic
Equipment Act (in short: ElektroG).
5.8 Troubleshooting
This overview helps you to detect and correct malfunctions on your own and explains,
what kind of malfunctions require the consultation of suitably qualified service person-
nel.
Malfunction Potential causes Remedy
The drive units cannot be
controlled via the hand control Power cable is not connected Insert power cable
Signals of the lifting columns are incorrect-
ly processed within the control Carry out Reset Transport as
described on page 15.
No voltage in the socket Check the socket or the fuse
box
Plug connector of the hand control not
fixed firmly Check the plug-in connection
on the motor
Hand control or drive unit defective Notify the operator or Bock
customer service
Disabling function or control box in the
hand control activated Disabling function or control
box in the hand control deac-
tivated
When buttons are pressed, the
drive units stop after a short
time There is an obstruction in the adjustment
range Remove obstruction
The safe capacity/working load has been
exceeded Reduce the load
The drives stop after a longer
adjustment time The adjustment time or safe capaci-
ty/working load has been exceeded and
the polyswitch in the transformer of the
control unit has responded to increased
heat Allow the drive system to cool
down sufficiently for at least
one minute
Opposite functions when
operating the hand control Motor connector switched internally Notify the operator or Bock
customer service
Individual drive units run in one
direction only Hand control, drive unit or controller
defective Notify the operator or Bock
customer service
Drive units stop and bed re-
mains in a tilted position Constant operation of adjustment func-
tions Move lying surface in bottom
or top position as this will
straighten it again horizontally.
Activate disabling function in
hand control