ELECTRONIC TEST CHAMBER ASSEMBLY, MODEL 453
OPERATION UNDER USUAL CONDITIONS
ACTUATION ALTITUDE TEST
13. Repeat steps 1 through 10 with the AR2 dial set to the MSL altitude where actuation is
required for a normal mission profile. Set the test chamber 2,000 feet higher than this altitude
with the same fall rate setting. The altitude actuation tolerance is 300 feet for dial settings
below 10,000 feet MSL and 500 feet for settings of 10,000 feet or above.
14. If no other tests are to be performed, follow shut down after testing procedure at end of this
DECALS AND INSTRUCTION PLATES
1. There are two Model 453 identification decals (24). One is located on the mounting board
beneath the altitude chamber; the other is mounted on the carrying case.
2. There is one CONTROL ASSEMBLY identification decal (25) located on the back of the
control assembly. This decal carries its own serial number; which may differ from the Model
453 serial number.
TEST CHAMBER Identification Decal