Operation 5
Commissioning
The hydraulic functions are only enabled if:
• The seat switch has been actuated
• The switch is functioning corr
ectly
The drive function is only enab
led if:
• The parking brake has been released
• The seat switch has been actuated but the
accelerator pedals have not
• One of the accelerator pedal
sisthen
actuated
• The switches are all functioning correctly
NOTE
The parking brake is rele
ased once one of the
accelerator pedals is ac
tuated slightly.
Enabling the truck func
tions using the
seat switch
The seat switch monitors whether or not a
driver is seated on the driver’s seat. The seat
switch must always be actuated first, and then
the foot switch. Only then can the driver select
the drive function or the hydraulic functions.
If the switch malfunctions during operation,
the truck is braked to a standstill or to a speed
of 2.5 km/h, according to truck type, and
a corresponding message appears in the
display and operating unit.
If the seat switch is
defective or if the switch
was not actuated at l
east once within an
eight-hour period,
the controller also assumes
that there is a malfu
nction.
– If the problem persists after the driver’s
seat has been occupied once and then
vacated, please contact the authorised
service centre.
NOTE
If the truck remains switched on for longer
than eight hours in total, the switch status of
the seat switch must change at least once.
As a rule, this does happen during normal
operation. If this has not happened, the seat
switch must be released and then re-actuated
once while the truck is switched on.
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