BENDIX AD-9 Service Data - Seite 16
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AD-9 AIR DRYER TROUBLESHOOTING CHART (Continued)
SYMPTOMS
2. Water in vehicle
reservoir (continued).
3. Safety valve on air dryer
popping off or
exhausting air.
16
CAUSE
G. Air by-passes desiccant
cartridge assembly.
H. Purge time is
significantly less than
minimum allowable.
A. Desiccant cartridge
plugged.
B. Defective discharge
check valve in end cover
of the AD-9.
C. Defective fittings, hose or
tubing between air dryer
and first reservoir.
D. Excessive pressure
pulsations from
compressor. (Typical
single cylinder type).
E. Safety valve setting lower
than the maximum
system pressure.
REMEDY
be installed. Consult your local authorized
Bendix parts outlet or sales representative for
additional information.
European Air Brake Systems - Brake systems
that incorporate compressors without integral
unloading mechanisms and/or utilize a
compressor discharge line unloader valve have
special air dryer installation requirements.
Consult your local authorized Bendix parts
outlet or sales representative for additional
information.
Air Compressor Size - Although the AD-9 can
be used in conjunction with larger
compressors, it was designed primarily for
units rated for up to 17 CFM. It is
recommended that when using the AD-9 with a
compressor which has a rated displacement
exceeding 17 CFM that an authorized Bendix
parts outlet or Bendix marketing representative
be contacted for assistance.
G. Replace desiccant cartridge/end cover/o-ring.
Check to make sure desiccant cartridge
assembly is properly installed.
H. Replace desiccant cartridge/end cover o-ring.
Check to make sure desiccant cartridge
assembly is properly installed.
Replace desiccant cartridge assembly.
A. Check compressor for excessive oil passing
and/or correct compressor installation. Repair
or replace as necessary. Rebuild or replace
cartridge.
B. Test to determine if air is passing through
check valve. Repair or replace.
C. Check to determine if air is reaching first
reservoir. Inspect for kinked tubing or hose.
Check for undrilled or restricted hose or tubing
fittings.
D. Increase volume in discharge line. Added
length or size of line, or add a ping tank.
E. Reduce system pressure or obtain a higher
setting safety valve.