barfield DPS400, Инструкция по эксплуатации

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INSTRUCTION MANUAL
DPS400
56-101-01180-C 1-4
Page 34
November 5, 2003
(f) Repeat step (e) above for all altitudes required. Always close the static RATE
CONTROL/LEAK TEST valve first, and then adjust the STATIC CONTROL to
the next test altitude. Reopen the static RATE CONTROL/LEAK TEST valve
slowly.
Note: If the altitude protection circuits trip, reduce altitude below the
programmed limit and reset protection circuits. If the VSI protection
trips, wait until the test set VSI indicator reads zero, reset protection
circuits, and continue testing.
(g) Set the STATIC CONTROL to approximately field elevation altitude.
(h)
Observe and maintain the VSI below programmed limits. Slowly open the
RATE CONTROL/LEAK TEST to return the aircraft static system to field
elevation.
(i) Close the RATE CONTROL/LEAK TEST valve and slowly open the Static
VENT valve to return the static system to ambient pressure.
(j)
Close the LEAK TEST valve and slowly open the PITOT VENT until the
airspeed reaches 0 knots.
(k)
Configure the Tester as follows before turning power off:
Leak Test Closed
Rate Control/Leak Test Closed
Pitot Vent Open
Static Vent Open
Pitot Control
≈
100 knots
Static Control
≈
Field Elevation
(l)
Continue on to the Combined Pitot/Static Test or if testing is complete,
disconnect the Pitot and Static ports from the aircraft.
D. COMBINED PITOT / STATIC TEST
(1) Combined Altitude/Airspeed Tests
Note: Always start tests at the lowest altitude and airspeed required. To prevent
tripping the protection circuits, do not exceed the programmed rate limits
while changing altitudes or airspeeds.
(a) Verify that Tester Leak tests and the Aircraft System Leak have been
completed.
(b)
Insure the aircraft altimeter is set to 29.92 inHg.