Bendix Commercial Vehicle Systems BA-922 COMP User Manual

Page 4

Bendix

BA-922

Compressor Installation and Application Review

Page 4 of 14

Section III

Vehicle/Engine Requirements and Expectations

Life expectation (in hours or miles): _________________________________

Duty Cycle expectation (percent time compressor operates loaded):

5% to 25%

25% to 35%

greater

than

35%

Recommended

Test

Procedure:

Install a pressure switch (60 - 90 psi) in the governor signal line. Record the switch voltage
or continuity during vehicle operation. The duty cycle is the quotient of the compressor
loaded time (low pressure in the signal line) and the total time. The total time of the test
should reflect a typical operation cycle of the vehicle.

Was duty cycle measured? NO

YES

Measured value: _____________

Installation

angles:

Engine installation angle: _____________________________________

Compressor rotated angle: _____________________________________

Gradability (vehicle operation on slope):

Side: _______________________________________________________

For/Aft:

____________________________________________________

Percent of time operated on inclines? _____________________________

Compressor delivery/system pressure: _________________________________

Engine rated speed: _______________________________

Air compressor drive ratio: _________________________