Maintenance and Repair
Back-in-Box-Lift K70 / K90 / K90 ACTIVE Page 55 of 100
7.3 Functional Test of the Safety Devices
7.3.1 Roll-off guard
ð Check that the roll-off guard rises (K90 and K90 AC-
TIVE) and latches in position when the Back-in-Box-Lift
lifts the platform off the ground.
ð If the roll-off guard does not function correctly, do not
use the Back-in-Box-Lift until repairs have been carried
out successfully.
7.3.2 Signalling system
ð Check that the warning signal sounds as soon as the
platform starts to extend from the cassette.
ð Check that the blinkers on the sides of the platform start
to blink as soon as the platform starts to extend from
the cassette.
NOTE
The warning signal must sound and the blinkers must blink
as long as the lift is not retracted (stowed). The warning
signal and blinkers must only go off when the platform is
fully retracted once again.
ð Initiate repairs if the warning signal or the blinkers do not
function correctly.
7.3.3 Door contact switch
ð Close the door above the Back-in-Box-Lift.
ð Try to operate the platform using the cable-connected
remote control, USB remote control or Smartphone
App.
ð If the platform can be operated even though the vehi-
cle’s door is closed, do not use the Back-in-Box-Lift un-
til repairs have been carried out successfully.
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