BENDIX DRM DRYER RESERVOIR MODULE Manual

®
Bendix Dryer Reservoir Module with AD-IS
SECONDARY
RESERVOIR
AD-IS ® AIR DRYER PART NUMBER STAMPED HERE

DESCRIPTION

The function of the dryer reservoir module (DRM
provide heavy vehicles with an integrated vehicle air dryer,
secondary reservoir, purge reservoir, governor and a number
of the charging valve components in a module. The DRM
dryer module model covered in this Service Data Sheet is
the first to be released, see updates to this Service Data
Sheet for other models.
™
The DRM dryer module includes an integrated solution air
dryer (AD-IS ® ), a reservoir (including a separate purge
reservoir section) a governor and four pressure protection
valves. These have been designed as an integrated air supply
system.
The function of the AD-IS
air system contaminants in solid, liquid and vapor form
before they enter the brake system. It provides clean, dry
air to the components of the brake system which increases
the life of the system and reduces maintenance costs. Daily
manual draining of the reservoirs is eliminated.
The function of the pressure protection valves is to both
control the order in which the components receive air from
®
the AD-IS air dryer, and also to protect each reservoir from
a pressure loss in the other reservoir or a pressure loss in
an air accessory.
INTEGRATED
PURGE RESERVOIR
GOVERNOR
®
air dryer is to collect and remove
®
Air Dryer
MOUNTING
BOLTS (3)
®
AD-IS
PRESSURE PROTECTION
Air Dryer
VALVES (4)
The air dryer consists of a "spin on" desiccant cartridge
™
) is to
secured to a base assembly.
The base assembly contains a delivery check valve
™
Assembly, safety valve, heater and thermostat assembly,
pressure protection valves, threaded air connections and
the purge valve assembly.
Air
Connection
Port ID
1
IN
21
PRI
22
AUX 1
23
AUX 2
UNL
RES
EXH
TABLE 1 - DRM
DESICCANT
CARTRIDGE
DELIVERY PORTS
SAFETY VALVE
HEATER/
THERMOSTAT
FIGURE 1 - DRYER RESERVOIR MODULE
Function/Connection
Inlet Port (air in).
Delivery Port out (to Primary reservoir)
Auxiliary Delivery Port (air out).
Auxiliary Delivery Port (air out).
™
Unloader Control Air (D-2A Governor)
Common Reservoir Pressure (D-2A
Governor Exhaust
™
DRYER MODULE AIR CONNECTIONS
AUXILIARY
(5)
No.
1
1
4
1
2
™
Governor) 2
1
1