Haulotte Group H14T, Operating And Maintenance Instructions Manual, Page: 41 / 78

Operating and maintenance instructions - H14TX - HA16TPX
27
Caution!
3.2 - ELECTRICAL CIRCUIT AND SAFETY MECHANISMS
3.2.1 - General points
The electric power used for controlling and starting the thermal motor is
supplied by a 12V battery.
The operating time is recorded by an hour meter.
Do not perform any manoeuvres
until you have fully understood the
instructions in section 4.
To prevent the machine from being used in excess of its capabilities, safety
mechanisms have been integrated to protect personnel and the machine.
These immobilise the machine or neutralise the movements.
In either case, if knowledge of the characteristics and operation of the
machine is insufficient a machine failure may be diagnosed, when in fact
the safety mechanisms are operating correctly. It is therefore necessary to
fully understand the instructions in the following chapters.
If standby or emergency manual operation is necessary, the safety
mechanisms are neutralised.
3.2.2 - Automatic motor stop
The motor is automatically stopped when:
• the generator stops operating.
• oil pressure is too low
• oil temperature is too high.
3.2.3 - Platform load check
If the load in the platform exceeds the maximum authorised load, no
movements are possible from the platform control station. The overload
light indicator on the platform panel and the buzzer alert the operator. Load
must be removed to re-enable the machine.
3.2.4 - Tilt control
In the work position (machine extended), the tilt detector box emits an
audible signal when the maximum allowed tilt is reached. If the sitation
persists after a time delay of 1 to 2 seconds, the following movements are
disabled: boom lifting, jib lifting, telescope extension and travel.
To restore travel movements, all the lifting elements must be folded. The
machine can then be moved to an allowed tilt.
NOTA: When the machine is folded (telescope in, boom lowered and
jib below the horizontal), tilt is tolerated. No alarm is sounded.