38
4.10
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 personnel.
Malfunction
Potential causes
Remedy
The drive units cannot be con-
trolled via the hand control
Power cable is not connected
Insert power cable
Signals of the drives for the height adjust-
ment are incorrectly processed within the
controller
Carry out the reset run as de-
scribed in Chapter 3 "The hand
control".
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 working load has been exceeded
Reduce the load
The drives stop after a longer
adjustment time
The adjustment time or safe working load
has been exceeded and the polyswitch in
the transformer of the controller has re-
sponded to increased heat
Allow the drive system to cool
down sufficiently for at least
one minute
Opposite functions when oper-
ating the hand control
Check the pin assignments on the control-
ler, see Chapter 4.2
Notify the operator or Bock
customer service
Individual drive units run in one
direction only
Hand control, drive unit or controller de-
fective
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