Instruction Manual

• 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 tting.

2. Air dryers do not purge.

• Insufcient 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

sufcient 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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SD-08-2417 ©