Product Manual
8.3 LEAK DOWN TESTING
You must always test the Emergency Side before testing the Service Side. Trying to
test the Service Side rst will result in erroneous readings.
EMERGENCY SIDE LEAK DOWN TESTING
1. After setting the desired working pressure, set the Emergency Side Air Ball Valve to
the CLOSED position. This will begin the leak down test.
2. Observe the needle on the air gauge and note any PSI drop after pressure stabilizes.
3. Look for air loss according to your local specications by noting consistent air
drop over time. If air pressure continues to drop at an unacceptable rate, you can
turn your air supply back on by setting the Emergency Side Air Ball Valve to OPEN
and attempt to nd the source of the leak in the air system.
SERVICE SIDE LEAK DOWN TESTING
1. Set the Emergency Side and Service Side Air Ball Valves to the OPEN position.
Set the Service Side Brake Control Switch to the PRESSURIZE position. (This lls
the Service Side air lines.)
2. Once the Service Side is fully charged, set the Service Side Air Ball Valve to the CLOSED
position.
3. Observe the needle on the air gauge and note any PSI drop after pressure stabilizes.
4. Look for air loss according to your local specications by noting consistent air
drop over time. If air pressure continues to drop at an unacceptable rate, you can
turn your air supply back on by setting the Service Side Air Ball Valve to OPEN
and attempt to nd the source of the leak in the air system.
Set Emergency Side Air Ball Valve to CLOSED
Set Service Side Air Ball Valve to CLOSED
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