BENDIX AD-IS User's Manual | Page 2

BENDIX Dryer User's Manual - AD-IS.
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FIGURE 2 - AD-IS® AIR DRYER AND RESERVOIR SYSTEM CHARGE CYCLE

COMPRESSOR

GOVERNOR

PURGE

CONTROL

CHANNEL

DESICCANT

BED

DELIVERY

CHECK

VALVE

(OPEN)

PURGE

RESERVOIR

PRIMARY

PORT

(PRI)

PURGE

VALVE

(CLOSED)

TURBO CUT-

OFF VALVE

(OPEN)

ENGINE

TURBO

UNLOADER

PORT

INLET
PORT

(IN)

OIL

SEPARATOR

PURGE

ORIFICE

PRIMARY

RESERVOIR

PRESSURE PROTECTION

VALVES

AUXILIARY PORTS

(TO ACCESSORIES)

SEE

NOTE 1

Note 1:

The AD-IS®  air dryer and reservoir system
purge piston has a purge control channel
drain. This allows any condensation in this
area to flow past a diaphragm in the top of the
purge piston and out through a channel in
the middle of the central bolt of the purge
assembly to be drained. During the purge
cycle this drain is closed.

SAFETY

VALVE

PURGE

RESERVOIR

DRAIN VALVE

The function of the pressure protection valves is to protect
each reservoir from a pressure loss in the other reservoir or
a pressure loss in an air accessory.  Each of the pressure
protection valves in the AD-IS® air dryer and reservoir system
may have different pressure settings, but these are factory
set and must not be changed or adjusted.

The air dryer and reservoir system 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.

The removable purge valve assembly incorporates the purge
valve mechanism and a turbocharger cut-off feature that is
designed to prevent loss of engine “turbo” boost pressure
during the purge cycle of the AD-IS® air dryer and reservoir
system. For ease of maintenance, all replaceable
assemblies can be serviced without removal of the air dryer
and reservoir system from its mounting on the vehicle.  Refer
to Preventive Maintenance section.

A

D

C

B

SECONDARY

RESERVOIR

SECONDARY

PORT

(SEC)

DIAGRAM SHOWS PRESSURE
PROTECTION VALVES A & B OPEN,
C & D CLOSED.

 

Also See for BENDIX AD-IS

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