Page 24
Version 2.08
Operating Manual PLK8
11.
Trouble shooting guide
The lift unit will emit an acoustic warning signal in case of a problem occurring during normal operation.
The fault can be read from the display, and the following countermeasures, described in the table below,
should then be taken:
Display prompt
and meaning
Possible cause of problem
Solution
Fault 1
Emergency Stop or
Emergency Brake is
activated
Emergency stop button has been
pushed
Release the emergency stop button
(turn button to the left)
Emergency safety brake has been
activated
Use the emergency drive button and
move the lift in direction of the upper
station.
After the safety catcher has been
activated the device must be checked and
if necessary replaced by a technician.
Fault 2
Loading ramp or
contact sensor strip
Obstacle is activating the contact
tray (on underside of platform) or
sensor strip on access ramp
Remove obstacle and make sure that the
access ramp and contact tray can be
moved easily.
Fault 3
Low voltage or
no charge in batteries
Lift is not parked at charging station
Move the lift with UP or DOWN button to
a charging station.
Recharger is not plugged in or is
broken
Check power supply
Empty or low charge in batteries
Move the lift with UP or DOWN button to
a charging station.
Fault 4
Platform
or
Safety bars are
overloaded
Obstacle blocks movement of safety
bar or platform
Remove obstacle
If necessary call a service technician
Fault 5
Safety bar manually
opened
Safety bar has been opened by hand
Close safety bar by pressing UP or DOWN
button.
Fault 6
Only use onboard
control
Incorrect operation
The lift can only be operated via onboard
controls while the platform is opened.
PLC menu must be reprogrammed, this
can only be done by a service technician.
Fault 7
Both limit switches
activated
Upper and lower limit switch are
pressed at the same time
Call service technician
Fault 8
Fuse F2 is broken
Short circuit of platform or safety
bar motor
Replace 7,5 A fuse (see
Check freedom of movement of safety
bars and/or platform motor operation.
Lever switch b19 is bent or broken
Straighten lever of b19 switch or replace
it.
