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|  MIL-T-82570A(OS)
SCHEDULE I
Dry Firing Tests
Pressure
Switch
AC Input Voltage
Flask
Firing
Firing Method
Condition
to Solednoid
Pressure
Sequence
Manual
1200 psig
1
Manual
2000 psig
2
102.5 O.5
1350 psig
3
Closed
Electrical
102.5 O.5
2000 psig
4
Closed
Electrical
123.5 0.5
1350 psig
5
Closed
Electrical
123.5 0.5
2000 psig
6
Closed
Electrical
NOTE : Prior to conducting the above tests
remove the clevis pin from the lever of
the plug puller mechanism and disconnect
the lanyard from the lever. Replace and
secure the clevis pin through the keeper
and lever. Secure the breakaway plug to
the guide by looping the lanyard over the
plug.
*
4.4.5.20.1 Electrical firing test. Each barrel electrically fired shall
fire with only one 400-millisecond application of test potential. Two firings
shall be made at 102.5 plus or minus 0.5 volts ac and two at 123.5 plus or
minus 0.5 volts ac.
4.4.5.20.2 Manual firing. During the manual firing tests measure the
force required to activate the solenoid valve with the push scale. The
force required shall be 25 pounds maximum.
4.4.5.20.3 Breakaway plug mechanism. After each dry firing, the plug
puller mechanism shall be in the latched position and shall be capable of
being unlatched by hand.
4.4.5.20.4 Control valve operating lever. During all dry firing tests
observe that there is no leakage or premature air escape while the control
valve operating lever is in the STANDBY condition. While performing the
tests of Schedule I, with the control valve operating lever in the STANDBY
18
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