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Cayman 2006
Chassis Information — Section 10 • 229
AIR DRYER
The air dryer, located underneath the motorhome between the frame rails in front of the drive axle, removes
moisture from the compressed air system to prevent freezing of brakes or other pneumatically operated items.
The air dryer has three functions: cooling, fi ltering and drying the air going through the motorhome air
system. If an excessive amount of water is present when performing the monthly air tank drain service, the fi lter
for the air dryer may need to be changed.
Operation:
During system pressure build-up, compressed air passes into the air dryer where the fi lter system removes
contaminants and passes the air into the drying stage. When the compressor unloads, the water is expelled and the
dry air fl ows back through the dryer, drying the desiccant for the next cycle. Initially, moisture condenses in the
base of the dryer. Moisture-laden air passes through the desiccant bed in the air dryer cartridge and is dried.
• The compressor intakes water vapor with the air. The water vapor condenses as it cools.
• The air dryer prevents water accumulation in air lines that could damage seals and valves and wash away
lubricants.
• The air dryer also prevents water in the air lines that can freeze and damage air system components.
Air Dryer Components:
1. Purge Valve:
A valve located on the bottom of the air dryer
base that remains open during a compressor unload cycle to
allow collected moisture, condensation and contamination to
expel from the air dryer during the purge cycle.
2. Pressure Relief Valve:
Protects the air dryer from over-
pressurization.
3. Regeneration Valve:
Controls regeneration of the desiccant by
allowing air from the supply and secondary tanks to bypass the
outlet check valve.
4. Heater Power Harness:
Twelve-inch cable with a Metri-Pack
plug provides an electrical connection to air dryer heating unit.
In extreme cold, verify that the air dryer heater is in good working order. The 100-watt heater in the air dryer
is controlled by ignition power. The heater turns on below 45° F and off when the air dryer temperature is above
86° F. The fuse for the heater is located in the front electric bay, roadside.
WARNING:
Remove all pressure from the air system before disconnecting any component, including the
desiccant cartridge. Pressurized air can cause serious personal injury.
070164b
Summary of Contents for Cayman 2006
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Page 59: ...Cayman 2006 Driving Safety Section 2 51 Weight Label 100179d ...
Page 65: ...Cayman 2006 Driving Safety Section 2 57 Actual Worksheet 020255b ...
Page 66: ...58 Section 2 Driving Safety Cayman 2006 Weight Record Sheet ...
Page 72: ...64 Section 2 Driving Safety Cayman 2006 NOTES ...
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Page 174: ...166 Section 6 Water Systems Cayman 2006 NOTES ...
Page 176: ......
Page 190: ...182 Section 7 LP Gas Systems Cayman 2006 NOTES ...
Page 192: ......
Page 212: ...204 Section 8 Electrical Systems House Cayman 2006 NOTES ...
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Page 287: ...Cayman 2006 Chassis Information Section 10 279 METRIC U S CONVERSION CHART ...
Page 289: ...Cayman 2006 Chassis Information Section 10 281 ...
Page 290: ...282 Section 10 Chassis Information Cayman 2006 ...
Page 291: ...Cayman 2006 Chassis Information Section 10 283 NOTES ...
Page 293: ...Cayman 2006 INDEX ...
Page 294: ......
Page 300: ...292 Index Cayman 2006 NOTES ...