Vmac VR150, Owner'S Manual, Page: 36 / 48

VMAC
–
Vehicle Mounted Air Compressors
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20. Allow five minutes for the oil to drain into the tank, then check the
level at the sight glass at the front of the tank. Continue adding
oil until the level is correct.
Do not overfill the system. Overfilling the system with
oil can flood the sight glass window and make the
system appear empty.
21. Install the fill plug in the inlet control valve and tighten it securely.
22. Place the manual transmission in neutral or the automatic
transmission in park and fully apply the park brake.
23. Start the engine and allow it to reach operating temperature.
24.
Press the “ON” button on the control box, allow the system to
pressurize and return to preset base idle speed.
25.
Press the “OFF” button on the control box.
26. Allow the system to settle for five minutes, and then check the oil
level through the sight glass. The level must be between the
minimum and maximum level indicators.
27. Check for oil leaks.
Problem Diagnostics / Troubleshooting
Problem diagnosis should follow sound, recognized practice. Quick,
accurate diagnosis of problems should involve the following:
accurately identify the problem by operating the system
yourself
determine possible causes for the problem by understanding
how the system operates
isolate the potential causes by accurate testing using the
correct, recognized procedures
perform proper repairs using the correct procedures and the
recommended replacement parts
perform proper post-repair testing to ensure that the repairs
were effective
do not use test practices that are potentially harmful to
people or the equipment
electrical testing should be performed according to the
processes described in the troubleshooting chart. For
accurate diagnosis, refer to the electrical circuit diagram in
the installation manual.