Bendix Commercial Vehicle Systems BA-921 COMP - Manual (Page 10)

10
Bendix
®
BA-921
®
Compressor Installation and Application Review
Section IV Air System Components (Cont’d)
Compressor Air Induction System - Turbocharged Compressor Applications Only (Cont’d)
(NOTE: Testing should be performed by the engine Manufacturer)
Expected/Measured Minimum Compressor Inlet Pressure / Vacuum
(measured at compressor at rated engine speed and no engine load.)
_______________________________________
Note: If it can be verified that positive boost pressure is available at operating
temperatures with no engine load, no test will be required.
Recommended Test Procedure to Measure Min. Compressor Inlet
Pressure/Vacuum:
Install an appropriate pressure measurement device at the air inlet fitting on the
compressor. Bring the engine up to operating temperature. Run the engine under a no
load condition at rated engine speed and the compressor in the loaded (compressor
pumping) condition. Record the minimum compressor inlet pressure or vacuum.
Was measured compressor inlet pressure less than 25 in H
2
O? YES NO
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