Monaco SIGNATURE 2001 series, Owner'S Manual

Page: 271 / 327

To retrieve blink code(s)
• Turn ignition key to the ON position.
• Using Systems Diagnostic Center located left of steering column
below dash board, depress and hold test button for three seconds.
Indicator light will illuminate while test button is depressed.
• After releasing test button, indicator lamp will turn off and blink
code will be displayed: 1-1 will indicate no system faults.
The motorhome air braking system is equipped with several back-up safety
systems and warning alarms in the event of an air system failure. Refinements
to air braking systems have been instituted with safety as top priority. For
example: should the air compressor fail to charge the air system and the low air
gauge readings go undetected, a low air pressure warning buzzer will sound
and low air pressure dash warning indicator lamp will illuminate. These warn-
ing indicators occur at approximately 65 psi. This will alert the operator of an
impending situation. If the motorhome is allowed continued operation, the
pneumatic emergency spring brake relay valve installed in the air system senses
the low air pressure condition. The emergency spring brake relay valve will
release the air charge from the spring brake air chambers on the rear drive axle.
In this case, the park brakes will automatically apply at approximately 30 psi.
This safety back-up system acts as an automatic emergency brake system.
Another back up safety is the air system separation of the front and rear
brakes, implemented by using two air tanks. One tank is located in the front
and the other is located in the rear. This separation allows the front air tank to
operate the front brakes, the rear tank operates the rear drive axle brakes and
tag axle brakes if equipped with a tag axle. This tank division gives reassurance
in the event of one tank having a failure of an accessory air item allowing the
compressed air to escape. Accessory air items are other pneumatically operated
items such as the air horn, step well cover, vacuum generator, etc. The accesso-
ry air items operate only when air tank pressures exceed 65 psi. This is done
with pressure protection valves. Should an accessory air item fail, the pressure
protection valve (PPV) will reserve remaining air pressure of 65 psi for brak-
ing. This will leave the motorhome with one air tank fully charged for a safety
back up.
Another situation, in which all compressed air has escaped from the rear air
tank, a pneumatic back-up safety valve is installed. This is the safety inversion
valve. The inversion valve senses the absence of rear air tank pressure. In this
case the inversion valve will allow the operator to make a modulated spring
brake application, made in conjunction with the emergency spring brake relay
valve. The inversion valve allows the front air tank pressure to recharge the
rear brake chambers after the modulated spring brake application has been
made. This back-up system allows use of all the brakes, allowing the operator
to bring the vehicle to a safe stop. In the event of all compressed air charge
escaping from the front air tank, the operator will still have full use of the rear
brakes.
Chassis Information
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
S I G N A T U R E
1 0 • 2 7 1
BRAKE
SYSTEMS-
Back-Up