PREVOST H 2018 Series, Руководство оператора

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OTHER FEATURES 5-29
PA1628 H3-41, H3-45 Operator’s Manual
increase flexibility of the system. Refer to
Section 4
Controls And Instruments .
The full Hi-Buoy system raises the whole coach
about 4 inches (100 mm). It can be used to
enable passengers to get on or off the coach
easily, and to safely travel roads with high
obstacles. Refer to Section 4
Controls and
Instruments .
NOTE
The Hi-Buoy system does not operate when
the coach is traveling over 5 mph (8 km/h).
Consequently, the driver cannot inadvertently
operate the Hi-Buoy system at higher speeds.
LOW-BUOY
This system lowers the coach about 4 inches
(100 mm). It enables the coach to drive through
underpasses where the height is less than 12
feet (3.7 m).
Low-buoy operation is controlled by a valve
located on the lateral console. Toggle the low-
buoy control lever rearward to lower the coach.
Toggle the control level forward to return the
coach to normal ride height. A pictogram
appears in the Driver Information Display if the
coach speed exceeds 12 mph (20 km/h) when
lowered. Refer to Section 4
Controls and
Instruments .
CAUTION
Avoid parking too close to the curb or other
obstacles that could damage the coach
during low-buoy operation.
WARNING
Use only below 5 mph (8 km/h).
NOTE
The Low-Buoy cannot be activated when the
coach is traveling over 5 mph (8 km/h).
Consequently, the driver cannot inadvertently
operate the Low-Buoy system at higher
speeds.
RETRACTABLE TAG AXLE
Tag axle is controlled by a valve located on the
lateral control panel. The valve can be switched
to either the wheels up or wheels down position.
The axle will be automatically raised or lowered
by air pressure according to the valve position.
Refer to Section 4
Controls and Instruments .
The tag axle service brakes operate only when
the tag axle is in the wheels down position.
Never lower the tag axle while the coach is
moving. A pictogram appears in the Driver
Information Display if the vehicle speed exceeds
12 mph (20 km/h) with tag axle raised. The tag
axle can be raised in tight maneuvering areas
like in a parking lot or to make it easier to turn a
short corner. The tag axle shortens the
wheelbase and allows tighter turning. Raising
the tag axle transfers extra weight and
additional traction to the drive wheels providing
improved control on slippery roads.
CAUTION
Do not use tag axle in raised position for an
extended period. Raising tag axle increases
load on the drive axle, suspension and
tires.
Do not drive vehicle with tag axle raised
when speed is exceeding 12 mph (20 km/h).
In order to prevent damage to the
suspension, always raise the tag axle
before lifting the coach.
COOLANT HEATER
This optional auxiliary heating system is used for
preheating and retaining the heat of water-
cooled engines. It can be used before startup to
ease starting and to provide rapid operation of
the interior heating system. It can also be used
with the engine running to maintain coolant
heat and interior temperature.
The heater operates independently of the
engine. It is connected to the cooling system,
heating circuits and to the vehicle’s fuel and
electrical system.