Monaco DYNASTY 2006, User Manual

Page: 314 / 384

314 • SECTION 10 — CHASSIS INFORMATION DYNASTY 2006
4. Install a new O-ring.
5. Lubricate the O-Ring on the stem with a thin layer of grease.
6. Lubricate the cartridge seal with a thin layer of grease.
7. Thread the replacement cartridge onto the base until the seal touches
the base. Tighten the cartridge ONE additional turn.
DO NOT
OVERTIGHTEN
.
NOTE:
If an excessive amount of water is present when performing
the monthly air tank drain service, the filter for the air dryer
may need to be changed.
Desiccant-Type Air Dryer
1. Warm, humid air from the compressor condenses into either water or water vapor before entering the
air dryer.
2. A desiccant-type air dryer protects the motorhome air brake system by drying moisture-laden air before it
passes through the air reservoirs and into the brake system.
3. Water collects in the base of the dryer when warm air condenses the water before it enters the dryer, or
inside of the dryer before the water reaches the desiccant.
4. The desiccant material then removes additional water vapor, further drying the air.
5. During regeneration phase, the regeneration valve and pressure-controlled check valve remove water
from the desiccant bed with a backfl ow of dried, expanded system air.
Air Dryer Cycle
The governor turns the compressor on when the supply tank pressure drops below cut-in pressure. Compressed
air passes into the air dryer at the inlet port:
1. Moisture-laden air and contaminants pass through the desiccant.
2. Moisture is retained by the desiccant. Moisture also collects in the base of the dryer.
3. The governor turns the compressor off when the system reaches cutout pressure (approximately 135 psi).
4. The dryer purges and expels water collected in the dryer base.
5. When the regeneration valve opens, the dry system air fl ows back through the dryer. A small charge of
air from the front air tank backfl ows through the fi lter. The backfl ow dries the desiccant, preparing it for
the next cycle.
REPLACEMENT REQUIREMENTS
Components When to replace? Why?
Desiccant Cartridge •
Every two to three years.
•
When compressor is
replaced.
•
Water in supply tank.
•
Preventive maintenance.
•
Contaminated cartridge.
•
Saturated or contaminated
cartridge, high duty cycle
(wrong application of air dryer).
1. O-Ring
2. Seal Seat
3. Cartridge Seal
080223