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Operating Instructions - CPA2501
Air Data Test Indicator
CPA2501
6.4.7 Leak Test Application
The Leak Test application provides a way to check the system for leaks into or out of the system.
This App is found on the second page of the Apps menu accessed by pressing the page down
button [ ].
The operator defines a leak by setting the Time parameter and the Delta parameter. With the system
pressurized to a predetermined level, the leak test is initiated by pressing the Start button. If the change
in pressure exceeds the Delta parameter before the allotted time in the Time parameter, then the Leak
Test App will return a red status indication showing the actual difference (delta) in pressure recorded
during time period set in the leak test, indicating a “failed” test. Otherwise it will return a green status
indication showing that the delta was not exceeded for the time period, indicating a “passed” test. See
Figure 6.4.7-A for examples of a failed and a passed test.
Figure 6.4.7 - Leak test
Figure 6.4.7-A - Leak test fail (left) & Leak test pass (right)
