INSTRUCTION MANUAL
DPS400
56-101-01180-C
1-4
Page 29
November 5, 2003
4. AIRCRAFT TESTING
A.
Preliminary
Setup
(1)
Verify the power switch is OFF,
(2)
Set initial valve positions for the test set as follows:
Leak
Test
Closed
Rate Control/Leak Test
Closed
Pitot
Vent
Open
Static
Vent
Open
Pitot
Control
≈
100 knots
Static
Control
≈
Field Elevation
Note:
Do not over tighten the valves. A light pressure is necessary to completely
open or close the valves supplied with the DPS400 or other Barfield Pitot-
Static testers.
(3)
Connect the Power cable, the STATIC (blue band) hose and PITOT (red band) hose to
the test set if not already connected.
Note:
The quick connect ports on the test set and mating hoses are color coded
and keyed to help prevent accidental crossing of Pitot and Static hoses.
(4)
Insure the Tester Leak Checks have been completed before connecting the tester to
the aircraft systems.
(5)
Connect the PITOT PORT hose (Red Band) to the aircraft pitot system per the aircraft
maintenance manual. Using the Barfield 2423F Static Port adapter or another
manufacturer’s custom aircraft static adapter, connect the STATIC PORT hose (Blue
Band) to the aircraft static system per the aircraft maintenance manual.
Note:
Some aircraft have more than one static port associated with a given static
system. Make sure that other ports in the system being tested are sealed
before going on
.
(6)
Set the aircraft altimeter barometer to 29.92 in Hg.
(7)
Set the POWER switch to ON. (The power indicator illuminates.) Wait for the
initialization to complete (indicated when the parameter display appears).
(8)
Program and enable the Altitude, Airspeed/Mach, and VSI limits on the test set.