Holiday Rambler Imperial 2008, Руководство пользователя

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213
2008 IMPERIAL
CHASSIS INFORMATION — 10
The pneumatically operated items are divided
into two categories: brakes and accessory air.
Brakes have full use of supplied air pressure.
Accessory air items, such as the air horns or
stepwell cover, receive air through
pressure
protection valves (PPV) . The PPV will not
allow compressed air fl ow until the system
reaches approximately 60 psi. In the event of
an air system problem, the pressure protection
valve will leave a reserve air charge for braking.
The pressure protection valve is installed for
safety.
Air Governor
The air governor, located in the engine
compartment, regulates the air compressor to
cut-in and cut-out, keeping the air system in the
speci
fi ed operating range of 115 to 145 psi and
sending an air “purge” signal to the air dryer.
The air governor will
send an air purge signal to
the air dryer when cut-out
pressure is reached. This
opens the purge port of
the air dryer, expelling
moisture. The purge action
of the air dryer is identi
fi ed
by the short release of air at
the rear of the motorhome.
Air Storage Tanks
The front and rear air tanks should be
manually drained once a month or more
depending on operating conditions and humidity
levels. The front air tank has a drain valve for
both the wet and dry side. The rear air tank only
has one drain valve. Open the drain valves until
all air is purged from the tanks, allowing
fi ve
extra minutes for moisture to expel. Remember
to close the tank drain valves. Both air tanks
have a pressure relief valve that is set to release
at approximately 150 psi.
An auxiliary air
tank is incorporated
into the optional
air leveling system.
This tank is also
equipped with a
drain located in the
engine compartment
next to the rear air
tank drain. The
drain with the ¼"
air line is for the air
leveling tank, and
the drain with the
3/8" air line is for the
rear air tank. Drain
the air leveling tank
at the same time as
the main air tanks.
090404f
090463
Air Governor:
Mounted on curbside.
Front Tank Drains: Located
in generator compartment on
curbside.
Dry Side
Drain
Wet Side
Drain
090435
090411d
Rear Tank and Air
Leveling Drains:
Located in engine
compartment.