Preventive Maintenance - Eaton VORAD EVT-300 Driver Instructions

Collision warning system

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Maintenance/Diagnostic

Preventive Maintenance

The only maintenance required should be to keep the Antenna Assembly and

Side Sensor clean of heavy buildups of mud, dirt, ice, and other materials that

could reduce the range of the system. Antenna alignment should also be

checked if any occurrence may have caused it to be misaligned.

WARNING: The system will not sense objects if sensor view is

obstructed. Therefore, do not place objects in front of the system

sensors. Remove heavy buildups of mud, dirt, ice, and other

materials.

WARNING: Proper alignment is critical to correct operation of the

system (see VOSM-0030 for Antenna Assembly Alignment proce-

dure).

WARNING: Be sure the vehicle is not moving during the initial

self-test at vehicle's start-up. Otherwise, the system may not

operate properly.

Diagnostic Features

The system performs testing on a continuous basis. Every 15 seconds, the

results of these tests are evaluated by the Central Processing Unit to deter-

mine whether or not to report a failure. If a failure occurs within the front radar

system, the red "FAIL" light on the Driver Display Unit will illuminate continu-

ously as long as the failure is active, and the associated failure code is stored

in the Central Processing Unit memory until maintenance personnel are able

to check the system.

The EVT-300 can indicate active and inactive fault codes stored in the Central

Processing Unit memory when it is placed into its "Failure Display Mode".

Inactive fault codes are faults which have occurred and have self-corrected.

Active faults are faults that are still present. These fault codes provide the

driver the ability to record the system fault during a trip and call either the

maintenance department or Eaton Corporation for assistance. When placed

into its "Failure Display Mode" (see "How to Activate Failure Display Mode" on

page 28), specific fault codes are indicated by a pattern of flashes blinked out

on the Driver Display Unit's red "FAIL" light indicator.

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