BENDIX AD-IP INTEGRAL PURGE AIR DRYER manual Check Valve

Page 18

AD-IPAIR DRYER TROUBLESHOOTING CHART (Continued)

SYMPTOMS

CAUSE

REMEDY

1. Dryer is constantly

 

6. With gauge installed at RES port of governor,

 

pressure should not drop below ”Cut-In” pressure

“cycling” or purging.

 

 

at the onset of the compressor “Unloaded”

Dryer purges frequently

 

 

cycle. If pressure drops, check for “kinks” or

(every 4 minutes or less

 

restrictions in line connected to RES port. Line

while vehicle is idling)

 

connected to RES port on governor must be

(continued).

 

same diameter, or preferably larger than, lines

 

 

connected to UNL port(s) on governor.

 

 

 

 

B. Holset “E” type

B. Test the Holset E Compressor unloader system

 

compressor.

with feedback line and check valve for proper

 

 

operation. Make certain Holset ECON is not in

 

 

use with the drop-in version of the air dryer, if so,

 

 

remove and retest.

 

 

Check Valve

Feedback Line

Typical Drop-In Air Dryer End Cover

When installing a Bendix Drop-In air dryer in a system equipped with a Holset E or QE compressor, remove the Holset ECON valve along with its feedback and governor control line.

2. Water and/or Oil in

A. Improper discharge line

A. Refer to section entitled Connecting the Air Lines

Supply or Service

length or improper line

as well as Appendix A, Table A columns 1 & 2

Reservoir.

material. Maximum air

then check line size and length.

 

dryer inlet temperature is

 

 

exceeded.

 

 

B. Air system charged from

B. If system must have outside air fill provision,

 

outside air source

outside air should pass through air dryer. This

 

(outside air not passing

practice should be minimized.

 

through air dryer).

 

 

 

 

 

C. Air dryer not purging

C. See Symptom #5.

 

(see Symptom #5).

 

 

 

 

18

 

 

Image 18
Contents SD-08-2414 AD-IPDI Drop in AIR Dryer Model GeneralAD-IPINTEGRAL Purge AIR Dryer Charge Cycle Turbo Cutoff Feature Refer to Figure Preventive Maintenance Operation & Leakage Tests Side View Weatherproof Accordian TOP ViewMaintenance Kits Available Rebuilding the AD-IPAIR DryerDisassembly AD-IPAIR Dryer RemovalCleaning & Inspection Assembly34 35 36 DLU Style Purge Valve Old Style AD-IP End Cover Vertical Delivery Check Valve Retrofitting the AD-IPAIR Dryer AD-IPAIR Dryer InstallationTotal Vehicle Reservoir Requirement Volume Vehicle Application RequirementsLocating AD-IPAIR Dryer on Vehicle Connecting the AIR LinesVehicle Preparation Compressor Discharge LineStandard AD-IPAir Dryer Refer to B Installing AD-IPAIR Dryer with Holset Compressor GeneralPurge Exhaust Line AD-IPDI Drop In Air Dryer Model Refer to CTesting the AD-IPAIR Dryer Wiring Remote Power & Local GroundAD-IPAIR Dryer Troubleshooting Chart Perform tests 1 to 6 in the order presentedAD-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 Low Air Use High Air UseAdditional Troubleshooting Information Conventional Supply System Integral Purge AIR DryerComplaints Common to the Charging & AIR Supply System Complaint Can Not Build System PressureTests Common to More than ONE Complaint Discharge plugged or restricted