WABCO 1200E - Air Dryer Cycle; Air Dryer Cycle Description

1 Introduction
3
Meritor WABCO Maintenance Manual 34 (Revised 03-16)
Air Dryer Cycle
A single cartridge air dryer cycle is illustrated in Table A.
Table A
The governor turns the compressor on when supply tank pressure
drops below cut-in pressure, between 100 psi and 110 psi
(689-758 kPa) depending on governor settings.
Compressed air passes into the air dryer at the inlet port:
앫 Moisture-laden air and contaminants pass through the
desiccant.
앫 Moisture is retained by desiccant; moisture also collects in the
base of the dryer.
앫 Contaminants are removed as air passes through the desiccant
bed.
The governor turns the compressor off when system reaches
cut-out pressure, between 120 psi and 130 psi (827-896 kPa)
depending on governor settings.
1002142a
CONTROL
“WET” AIR
“DRY” AIR
CONTROL/DRY
LINES
ENGINE TURBO
BOOST PRESSURE
1002143a
1002145a
CONTROL
“WET” AIR
“DRY” AIR
CONTROL/DRY
LINES
ENGINE TURBO
BOOST PRESSURE