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TM 1-4920-458-13&P
Section III. Operation Under Usual Conditions
SECTION CONTENTS
PARA
PAGE
OPERATING PROCEDURES
2-6
2-8
SHUTDOWN PROCEDURES
2-7
2-10
2-6.
OPERATING PROCEDURES
a.
Place Tester on bench or platform where a source of DC or AC power is available.
b.
Connect appropriate power source to connector on rear panel of Tester with appropriate power cable (and
adaptor for single phase) per paragraph 2-2.
c.
Close all three instrument shut-off valves on top of operator panel to "OFF" position.
d.
Select aircraft instrument to be tested.
CAUTION
Vacuum valves must be open when operating pressure side; pressure valves must be open when
operating vacuum side.
e.
Open "Control" and "Bleed" needle valves of opposite side of Tester selected.
f.
Set appropriate vacuum or pressure selector valve to instrument to be tested selection. Make sure "Control" and
"Bleed" needle valves to be used are both closed.
9.
Open "shut-off" valve for appropriate aircraft instrument to be tested.
h.
Using hoses, connect instrument/aircraft to be tested to appropriate instrument "Pitot or Static" port on rear of
Tester.
NOTE
Altimeter and climb tests will be done using the "Static" port whereas airspeed tests will be done using the
"Pitot" port. Appropriate hose(s) and fittings for these hook-ups are in the accessory storage compartment.
i.
Turn the power switch to "ON". Indicator will light and motor/pump assembly will start.
2-8
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