BENDIX AD-IP INTEGRAL PURGE AIR DRYER manual Check Valve

Page 21

AD-IPAIR DRYER TROUBLESHOOTING CHART (Continued)

SYMPTOMS

CAUSE

REMEDY

2. Water and/or Oil in

 

When replacing the desiccant cartridge, make

 

sure desiccant cartridge assembly is properly

Supply or Service

 

 

installed and sealing rings are in place on

Reservoir (continued).

 

 

mounting surface of desiccant cartridge.

 

 

 

 

Check Valve

Feedback Line

 

 

Typical Drop-In Air Dryer End Cover

 

 

 

 

I. Desiccant requires

I. Replace desiccant cartridge assembly. Refer to

 

replacement.

Appendix A, Table A columns 3 & 4 for

 

 

recommended intervals.

 

 

 

3. Oil present at air dryer

A. Air brake charging

A. Air dryers remove water and oil from the air

purge exhaust or

system is functioning

brake charging system. A small amount of oil is

cartridge during

normally.

normal. Check that regular maintenance is

maintenance.

 

being performed and that the amount of oil in the

 

 

air tanks (reservoirs) is within the acceptable

 

 

range shown on the BASIC cup (see also

 

 

column 5 of Appendix A, Table A). Replace the

 

 

air dryer cartridge as needed and return the

 

 

vehicle to service.

 

 

 

4. Safety valve on air dryer

A. Restriction between air

A. Check to determine if air is reaching supply

“popping off” or

dryer and supply (first)

reservoir. Inspect for kinked tubing or hose.

exhausting air.

reservoir.

Check for undrilled or restricted hose or tubing

 

 

fittings and repair or replace as needed.

 

 

 

 

B. Air dryer safety valve

B. Verify relief pressure is at vehicle or component

 

malfunction.

manufacturer specifications. Replace if

 

 

malfunctioning.

 

 

 

 

C. Desiccant cartridge

C. Refer to Appendix A Table A and column 3.

 

maintenance required.

Check compressor for excessive oil passing

 

 

and/or correct compressor installation. Repair or

 

 

replace as necessary. Replace desiccant

 

 

cartridge.

 

 

 

 

D. Malfunctioning discharge

D. Test to determine if air is passing through check

 

check valve in end cover

valve. Repair or replace.

 

of the AD-IPair dryer.

 

 

E. Excessive pressure

E. Increase volume in discharge line by increasing

 

pulsations from

length or diameter. Add a ping tank (small

 

compressor. (Typical

reservoir).

 

single cylinder type).

 

21

Image 21
Contents SD-08-2414 General AD-IPDI Drop in AIR Dryer ModelAD-IPINTEGRAL Purge AIR Dryer Charge Cycle Turbo Cutoff Feature Refer to Figure Preventive Maintenance Side View Weatherproof Accordian TOP View Operation & Leakage TestsRebuilding the AD-IPAIR Dryer Maintenance Kits AvailableAD-IPAIR Dryer Removal DisassemblyAssembly Cleaning & Inspection34 35 36 DLU Style Purge Valve Old Style AD-IP End Cover Vertical Delivery Check Valve Total Vehicle Reservoir Requirement Volume AD-IPAIR Dryer InstallationRetrofitting the AD-IPAIR Dryer Vehicle Application RequirementsVehicle Preparation Connecting the AIR LinesLocating AD-IPAIR Dryer on Vehicle Compressor Discharge LinePurge Exhaust Line Installing AD-IPAIR Dryer with Holset Compressor GeneralStandard AD-IPAir Dryer Refer to B AD-IPDI Drop In Air Dryer Model Refer to CWiring Remote Power & Local Ground Testing the AD-IPAIR DryerPerform tests 1 to 6 in the order presented AD-IPAIR Dryer Troubleshooting ChartAD-IPAIR Dryer Troubleshooting Chart Check Valve Unloaded for a minimum of 30 seconds. This AD-IPAIR Dryer Troubleshooting Chart Check Valve Preventative Maintenance Section AD-IPAIR Dryer Troubleshooting Chart High Air Use Low Air UseConventional Supply System Integral Purge AIR Dryer Additional Troubleshooting InformationComplaint Can Not Build System Pressure Complaints Common to the Charging & AIR Supply SystemDischarge plugged or restricted Tests Common to More than ONE Complaint