BENDIX BW1948 manual SD-98-9808

SD-98-9808

Bendix® Dryer Reservoir Module with AD-IS®Air Dryer

INTEGRATED		DESICCANT
PURGE RESERVOIR	MOUNTING	CARTRIDGE
	BOLTS (3)

			AUXILIARY
			DELIVERY PORTS
			(5)
SECONDARY	GOVERNOR		SAFETY VALVE
RESERVOIR		AD-IS®	HEATER/
AD-IS®AIR DRYER PART NUMBER STAMPED HERE		Air Dryer PRESSURE PROTECTION	THERMOSTAT

VALVES (4)

DESCRIPTION

The function of the dryer reservoir module (DRM™) is to 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 dryer is to collect and remove 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.

FIGURE 1 - DRYER RESERVOIR MODULE

The air dryer consists of a “spin on” desiccant cartridge 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	Function/Connection	No.
Connection
Port ID
1	Inlet Port (air in).	1
IN
21	Delivery Port out (to Primary reservoir)	1
PRI
22	Auxiliary Delivery Port (air out).	4
AUX 1
23	Auxiliary Delivery Port (air out).	1
AUX 2
UNL	Unloader Control Air (D-2A™Governor)	2
RES	Common Reservoir Pressure (D-2A™Governor)	2
EXH	Governor Exhaust	1

TABLE 1 - DRM™ DRYER MODULE AIR CONNECTIONS

1