T61827
Revision:
18
MAESTRO
5
Obstruction / unbalance during lowering
Is cancelled when UP-button is activated, so that
UP still has the priority and the obstruction can be
left.
Check that there is no obstruction under the lift
hindering it from lowering. If necessary activate
UP to remove wedged objects.
Check state of bearing and safety nuts, and their
mutual distance.
Check obstruction switches and cable
connections to match if above measures do no
help.
6
Unbalance during raising – K1/Safety not
drawn
The lift has run out the synchronization area
and the safety supervision has stopped the lift.
Turn off main switch (see below) and operate the
two carriages manually to total balance – lower the
lift to bottom position to reset the impulse values –
follow the instructions in the chapter “precautions
concerning manual operation of lift”.
Check the re-starting procedure below and check
that synchronization happens correctly.
If lift still does not work after the re-starting
procedure check if LED4 gets alight when lift is
operated. If this is the case but lift still gives error 6
then circuit board is defective and has to be
replaced.
7
Error in safety circuit
The safety system is not functional and the lift
cannot work.
Turn off main switch (see below) and operate the
two carriages manually to total balance – lower the
lift to bottom position to reset the impulse values –
follow the instructions in the chapter “precautions
concerning manual operation of lift”.
Try the re-starting procedure below. If this does not
help, then replace the control circuit board.
8
Memory error
The position of the lift has not been
memorized correctly since the last run.
Turn off main switch (see below) and operate the two
carriages manually to total balance – lower the lift to
bottom position to reset the impulse values – follow
the instructions in the chapter “precautions
concerning manual operation of lift”.
Try the below re-starting procedure. If lift is running
subsequently check that all cable connections have
not been damaged and that they are not in contact
with movable parts of lift which could cause wearing
damages on cables.
Error 8 often occurs because of short circuits in the
electrical system of the lift.
Re-starting procedure:
For software versions ending with 63 and lower numbers:
Switch off lift.
Get both carriages to bottom position and in balance. Is this already done, wait 30 sec.
Switch on lift. Both bottom sensors must now be alight.
Activate Down button tvice during min. 2 sec., with 2 min. pause inbetween.
Switch off lift.
Wait 30 sec.
Switch on lift.
The lift should now work and the trouble shooting can be continued.
Содержание Maestro 2.20
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