VMAC - Vehicle Mounted Air Compressors
VMAC Technical Support: 888-241-2289
VMAC Knowledge Base: www.kb.vmacair.com
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Testing the Installation
Safety Test
Ensure the following has been completed:
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Place the automatic transmission in “PARK” and apply the park brake. Turn the
ignition “ON” but do not start the engine.
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Check the control box to see if it is illuminated. If there is no display, there is no
power to the control box.
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Press the “ON” button. The green LED should come on.
Place the vehicle in a safe operating position and adequately block
the wheels. Ensure that there are no people around the vehicle
before beginning the test
Before Starting the Engine Checklist
Ensure the following has been completed:
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Verify that compressor oil is visible in the AOST sight glass (actual level will be
corrected later).
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Verify that the vehicle coolant level is correct.
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Perform a final inspection of the installation to ensure everything has been
completed.
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Check all wiring for security and protection. Ensure nothing is touching the
compressor body.
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Install the VMAC Air Test Tool (P/N: A700052) with the 70 cfm (0.190 in) orifice
installed and the ball valve closed.
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Ensure all of the compressor outlets are closed.
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Ensure the parking brake is engaged and the transmission is in “PARK”.
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Start the engine.
After Starting the Engine Checklist
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Check for any leaks.
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Close and latch the hood.
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Allow the vehicle to reach operating temperature.
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Allow the vehicle to run for a minimum of 30 seconds.
On systems equipped with VMAC’s Digital Throttle Control, the
“PRK BRAKE” LED will remain illuminated at all times, regardless of
park brake position.
☐
Release the park brake. The green LED on the control box should flash and the
display will flash “PARK BRAKE”. Apply the park brake again and press the “ON”
button. The green LED should come on.
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Press the “OFF” button.
☐
Turn the ignition “OFF”.
The engine must be running to complete the final steps in the safety test. This will
be done after the pre-start checks have been completed.
