Holiday 2002 NEPTUNE, Руководство пользователя

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Chassis Information
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2 0 0 2 N E P T U N E
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The air compressing system on the motorhome is comprised of several
items: air compressor, air governor, and air tank(s). The compressed air system
operates several items, some of which can include air brakes, suspension, air
gauge (depending on options) and stepwell cover. A gear driven air compressor
mounted on the engine charges the system. As engine speed increases, com-
pressed air output increases. When air is compressed, heat is generated. Heat
dissipates as the air is discharged from the compressor. Moisture condenses in
the compressed air as it cools. The air tank is divided in two halves: a wet side
and a dry side. The compressed air enters the wet side before entering the dry
side. The tank is equipped with a pop valve, manual and automatic drain
(standard brake models) valves. The manual drain is located on the DRY side
of the tank. The pop valve and automatic drain valve are located on the WET
side. The pop valve is designed to release pressure in the tank when the
pressure exceeds 130 psi. Manual drain valves for the air tank is located on
bottom of the tank. Drain tank manually at least once a month.
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 a stepwell cover, receive air through a pressure protection valve
(PPV). The PPV will not allow compressed air flow until approximately 60 psi.
In case of an air system problem, the pressure protection valve will leave a
reserve air charge for braking. Pressure protection valves are installed for
safety.
A low-pressure air switch connected to a warning lamp on the dash console
monitors the air system. The lamp will illuminate when a low-pressure condi-
tion exists. Check the operation of the low air lamp when the air tank is
drained.
NOTE: The air tank should be drained manually every 30
days. Open the manual drain until all air escapes. Leave
valve open an additional five minutes allowing excess mois-
ture to drain.
The air governor, located in the engine compartment, regulates
the air compressor to cut-in and cut-out, keeping the air system in
the specified operating range of 105-120 psi.
Cut-in pressure of approximately 105 psi is factory preset
from the governor manufacturer and is not adjustable. Cut-out
pressure is calibrated to 120 psi.
AIR SUPPLY
SYSTEM
AIR GOVERNOR
OM040380
OM090319