Holiday Trip 2012, Owner'S Manual

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2012 Trip
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 Connection: Provides
12 Volt DC power to the heating
element.
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.
WARNING:
Remove all pressure from the air
system before disconnecting any
component, including the desiccant
cartridge. Pressurized air can cause
serious personal injury.
Desiccant Cartridge
Warm, humid air from the
compressor condenses into
either water or water vapor.
A desiccant-type air dryer
protects the air brake system
by drying moisture-laden air
before it passes through the air reservoirs and
into the brake system. The replacement kit
contains one cartridge and one O-ring.
To Replace the Cartridge:
Loosen and remove the old cartridge.
Use a strap wrench, if necessary.
Remove and discard the O-ring from
the dryer base.
Inspect and clean the seal seat. Repair
any minor damage.
NOTE:
If the seats are damaged that a tight
seal cannot be maintained, replace the
air dryer.
Install a new O-ring.
Lubricate the O-ring on the stem with a
thin layer of grease.
Lubricate the cartridge seal with a thin
layer of grease.
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 excess amount of water is present
when performing the monthly air
tank drain service, the filter for the air
dryer may need to be changed.
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Desiccant-Type Air Dryer
Warm, humid air from the compressor
condenses into either water or water vapor
before entering the air dryer.
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.
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.
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070164b
070165
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).
080223
1. O-ring
2. Seal Seat
3. Cartridge Seal