Bendix Commercial Vehicle Systems AD-IP INTEGRAL PURGE AIR DRYER 5/07 - Manual (Page 13)

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CFM that an authorized Bendix parts outlet or Bendix
marketing representative be contacted for assistance.
Holset “E or QE” Type Air Compressors - In order for
these Holset compressors to function properly when installed
with an AD-IP
™ air dryer, the required Holset feedback line
and single check valve must be used. The standard AD-IP ™
air dryer can be used with a separate feedback line and
single check OR the AD-IP
™ DI (Drop In) air dryer model can
be used. With AD-IP ™ DI drop in air dryer in use the separate
feed back line and single check valve can be eliminated
since these components are part of the air dryer. Refer to
Figures 2 & 3.
VEHICLE PREPARATION
1. Park the vehicle on a level surface and prevent movement
by means other than the brakes.
2. Drain all reservoirs to 0 p.s.i.
LOCATING AD-IP ™ AIR DRYER ON VEHICLE
1. The AD-IP ™ air dryer must be mounted vertically (purge
exhaust toward road surface) outside the engine
compartment in an area of air flow while the vehicle is in
motion. The AD-IP
™ air dryer must not be exposed to
direct wheel splash. If the air dryer is located directly
behind the axle, a mud flap is required.
2. Maintain a minimum clearance of 12" between the air
dryer and any potential heat source (e.g. vehicle exhaust).
If this is not feasible, a heat shield must be used.
3. Make certain that adequate clearance from moving
components (e.g. drive shaft, suspension, pitman arm,
etc.) is provided.
4. Locate the air dryer on vehicle so that a minimum of
1/2” clearance above the air dryer is available to allow
desiccant cartridge removal. A minimum of 8” clearance
below the air dryer is required to allow for desiccant
cartridge bolt removal.
5. When choosing the mounting location for the AD-IP ™ air
dryer, note the discharge line length requirements stated
under the heading Connecting the Air Lines, elsewhere
in this manual.
Important Note: Under normal operating conditions, the
maximum inlet air temperature for the AD-IP
™ air dryer
is 160 degrees Fahrenheit.
6. If possible, locate the AD-IP ™ air dryer so that the purge
exhaust does not expel contaminants on vehicle
components. If this is not feasible, the purge exhaust
may be redirected away from the vehicle by installing an
optional special exhaust cover (pc. no. 112609). The
exhaust cover is available as a separate item from
authorized Bendix parts outlets. A 1” ID hose can be
clamped on this special exhaust cover to allow the
exhaust to be redirected.
MOUNTING THE AD-IP ™ AIR DRYER (Refer to
Figure 10)
1. Install the lower mounting bracket on the AD-IP ™ air
dryer. To accomplish this, it will be necessary to choose
two, of the four available, mounting holes. To determine
which two holes to utilize to attach the lower bracket,
take into consideration the piping connections required
to install the AD-IP
™ air dryer and use those that will
best position the unit for ease of installation. Utilizing
the two cap screws and washers provided with the
AD-IP
™ air dryer retrofit unit, attach the lower mounting
bracket and torque to 300-360 in. lbs.
Note: The bracket mounting holes in the end cover may
not be pre-tapped. In this case the mounting bolt will
self tap the holes on initial installation.
2. Assemble the mounting strap (4) and saddle bracket (5)
as illustrated, by utilizing the 5/16" cap screw (1) and
sleeve nut (3) provided. Place the upper bracket strap in
the end cover channel provided for it, then install the
saddle bracket and secure the strap to the saddle bracket
using the cap screw (1) and sleeve nut (3) provided.
Install, but do not tighten the cap screw at this time.
Orient the strap and saddle bracket (5) so that it is in a
flat plane with the lower bracket. Torque the 5/16" nut to
60-100 in. lbs. to tighten strap onto the shell.
3. Components and location used to mount the AD-IP ™ air
dryer on the vehicle must be rigid enough to minimize
air dryer vibration.
4. Mount the AD-IP ™ air dryer on the vehicle using 3/8"
bolts (grade 5 min.) and washers. Torque to 25 ft. lbs.
(300 in.lbs.)
CONNECTING THE AIR LINES
PURGE CONTROL LINE
1. Install a purge control air line having a minimum inside
diameter of 3/16 inches between the AD-IP ™ air dryer
end cover control port and an unused unloader port on
the governor. The control line must be connected directly
to the governor and not in series with automatic drain
valves, lubrication systems, etc.
2. The control line should slope downward to the end cover
without forming sharp bends or “dips”.
COMPRESSOR DISCHARGE LINE
GENERAL:
Refer to Appendix A, Table A for recommended discharge
line lengths and sizes for various vehicle applications and
vocations.