TM 10-1670-305-23&P
0015 00-3/4 Blank
TROUBLESHOOTING PROCEDURES
0015 00
INITIAL SETUP INFORMATION
TABLE 2. TROUBLESHOOTING
ELECTRONIC TEST CHAMBER ASSEMBLY, MODEL 453
Malfunction
Probable Cause
Corrective Action
6. Altitude chamber does not
gain or hold altitude.
a.
Severe leak in
system.
a. Finger tighten external
fittings to altitude chamber and
vacuum pump/compressor.
b.
Damaged altitude
chamber gasket.
b. Replace altitude chamber
gasket (WP 0022 00).
c. Internal filter plugged
c. Replace control assembly
(WP 0022 00)
a. Damaged AR2.
a. Replace AR2 and attempt
to cock a known serviceable
AR2.
7. Fan on vacuum
pump/compressor is spinning
but compressor does not cock
AR2 in altitude chamber.
b. Damaged vacuum
pump/compressor.
b. Replace vacuum
pump/compressor (WP 0022
00).
8. Displayed or calculated fall
rate deviates from set value
by more than 2 ft/sec.
a. Fall rate span out of
adjustment.
b. Damaged control
assembly.
a. Send unit to calibration
facility (WP 0025 00).
b. Replace control assembly
(WP 0022 00).
END OF WORK PACKAGE
