Bendix Commercial Vehicle Systems AD-RP PuraGuard Oil Coalescing Remote Purge Air Dryers - Manual (Page 14)

14
TESTING THE BENDIX ® AD-RP ™ AIR DRYER
Before placing the vehicle in service, perform the following
tests:
1. Close all reservoir drain cocks.
2. Build up system pressure to governor cut-out and
note that the Bendix ® AD-RP ™ air dryer purges with an
audible escape of air.
3. Apply and release the service brakes to reduce system
air pressure to governor cut-in. Note that the system
once again builds to full pressure and is followed by a
purge at the AD-RP air dryer exhaust.
4. It is recommended that the following items be tested
for leakage to ensure that the AD-RP air dryer will not
cycle excessively.
(A) Total air system leakage (See Bendix publication
BW5057 "Air Brake Handbook.")
(B) Compressor unloader mechanism
(C) Governor
(D) Drain cock and safety valve in the fi rst (supply)
reservoir
(E) All air connections leading to and from the fi rst
(supply) reservoir; and the
(F) Delivery check valve.