Bendix Commercial Vehicle Systems BA-921 COMP - Manual (Page 12)

12
Bendix
®
BA-921
®
Compressor Installation and Application Review
Section IV Air System Components (cont’d)
Total Reservoir Volume ______________________________
Charge time required to raise the reservoir pressure from governor cut-in to cut-out
at maximum rated engine speed. _______________________________
Recommended Test Procedure:
Drain down the entire air system (supply, service and accessory tanks) to below 75 psi.
As the compressor runs to charge up the air system, start a timer when the tank pressure
reaches the governor cut-in pressure. Stop the timer when the compressor cut out (dryer
purge can usually be heard).
Was measured charge time less than 90 seconds? YES
NO
Coolant Supply
Source: _________________________________________
Line size to: ____________________________________
Distance to: ____________________________________
Maximum allowable engine coolant temperature: ______________
Maximum expected compressor coolant temperature: ___________
Recommended Test Procedure:
Install a temperature probe in the coolant supply fitting on the compressor and
either monitor or measure the engine coolant temperature (at thermostat
housing). Operate the vehicle such that the engine reaches operating
temperature. Record the engine coolant temperature and the compressor coolant
supply temperature. The maximum expected compressor coolant temperature is
sum of the recorded compressor coolant temperature and the difference between
the recorded engine coolant temperature and the maximum allowable engine
coolant temperature.
Is the maximum expected coolant supply temperature less than 220°F?
YES NO
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