Bendix Commercial Vehicle Systems AD-IS EVERFLOW User Manual

Page 12

• Excessive pressure (above 175 PSIG) in the

compressor discharge line. Look for obstruction

downstream of the Bendix

AD-IS

EverFlow

assembly

such as a pinched line or restrictive valve or fitting.

2. Air dryers do not purge.

• Insufficient air pressure in the secondary reservoir.
The Bendix

EverFlow

electronic module will not

operate until air pressure in the secondary tank reaches

80 PSIG.

• The check valve in the EverFlow

assembly supply

line from the secondary tank is installed incorrectly.

Refer to Figure 2.

• The fuse is blown or the air dryer is not connected

to the vehicle electrical system. Check the electrical

connection. If the fuse is blown, replace the fuse with

a higher amperage fuse. The fuse must be 15 amps

or higher.

• Incorrect voltage. The air dryer voltage must match

the vehicle voltage. Air dryers with a white heater

connector are 12 volt DC and air dryers with a grey

heater connector are 24 volt DC.

3. Air brake system will not build air.

• Compressor is undersized.
Some small capacity compressors will not develop

sufficient air delivery at engine idle to allow proper

operation of the EverFlow assembly and charge the

air brake system. It may be necessary to upgrade to

a compressor with a higher delivery.

4. Water in downstream reservoirs.
• Dryers not purging. See step 2 - Air dryers do not

purge.

• Desiccant cartridges need to be replaced.
• No pressure protection valve installed downstream

of the air dryers. Refer to Figure 2.

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