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Fault description
Cause
Remedy
In semi-automatic tel-
escoping mode, the
system does not
respond and the
status indicator for the
[Securing secure
locking unit]
quick-
select icon flashes.
The secure locking
unit cannot be
unlocked.
n
Tilt the joystick in the
[Extend telescope]
direction until
the boom is extended by 1 to 2 cm.
n
Press the
[Securing secure locking unit]
quick-select
button.
–
Fault rectified: The status indicator for the
[Securing secure locking unit]
quick-select icon is
black.
Select the semi-automatic telescoping mode.
–
Fault persists: The status indicator for the
[Securing secure locking unit]
quick-select icon is
yellow.
Tilt the joystick very slightly in the
[Extend telescope]
direction until the securing position has been
reached.
The secure locking
unit cannot be moved
in manual telescoping
mode.
Insufficient pressure
in the piston accu-
mulator to activate
the secure locking
unit
n
Set up the maintenance status.
n
Determine the cause.
n
Continue after the error description: "Insufficient pres-
sure in the piston accumulator to activate the secure
locking unit"
Cable break
The secure locking
unit can only be
switched to the
"secured and not
locked" status.
Both tension springs
are broken or the
pre-load/residual
pre-load of the ten-
sion springs is too
low.
n
Set up the maintenance status.
n
Replace the tension springs.
Insufficient pressure
in the piston accumu-
lator to activate the
secure locking unit
No oil or nitrogen in
the piston accumu-
lator
n
Set up the maintenance status.
n
Adding more oil
or
n
Replace the piston accumulator.
The pressure switch
is defective.
n
Set up the maintenance status.
n
Replace the pressure switch.
The electric motor is
defective or has a
short circuit.
n
Set up the maintenance status.
n
Replace the electric motor.
n
Rectify the short circuit.
The secure locking
unit cannot be
retracted.
The safety lever has
been pulled back.
Push the safety lever in direction of travel.
The telescopic cyl-
inder is not activated
for this movement.
Push the
[Activate telescopic cylinder]
switch to the right.
The secure locking
unit is secured.
Check the status indicator in the main menu.
Operation
27.04.2020
140.5.204 Telescopic crane
545
Fo
r
Reference
Only
Summary of Contents for 140.5.204
Page 69: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 69 F o r R e f e r e n c e O n l y ...
Page 70: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 70 F o r R e f e r e n c e O n l y ...
Page 87: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 87 F o r R e f e r e n c e O n l y ...
Page 88: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 88 F o r R e f e r e n c e O n l y ...