TM 5-4220-227-14
Table 4-2. Unit Troubleshooting Procedures (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
RECOMPRESSION CHAMBER SLOWLY LOSES AIR PRESSURE.
NOTE
This procedures requires two persons.
Step 1. Systematically open and close ELP-011, ELP-012, the O/L primary and secondary exhaust
valves, ELP-007, ELP-008, the I/L primary and secondary exhaust valves, and ALP-045 the
M/L pressurizing valve while observing the depth gages to indicate which valve is leaking.
Operate valves from full open to full closed position several times to dislodge any
foreign matter that may be in valve body. If valves still malfunction, notify Direct
Support Maintenance.
Step 2. Inspect for loss of air through the chamber penetrators, door seals, etc.
Maintain chamber depth and notify proper level of maintenance.
3.
RECOMPRESSION CHAMBER OVER PRESSURIZES.
Step 1. Insure that ALP-005, ALP-006, the I/L and ALP-009, ALP-010, O/L primary and
Secondary air supply valves are closed.
Open the primary exhaust valves. Adjust the valves to maintain the desired depth
and flow rate.
Step 2. Check digital temperature gage over a span of 15 minutes for temperature variation. A
sharp increase in temperature will cause an increase in chamber pressure.
Vent pressure as directed in step 1 Energize and regulate heater/chiller system.
4.
DIGITAL TEMPERATURE GAGE FAILS TO COME ON OR INDICATES FAULT READINGS.
Step 1. Ensure that the power strip is energized and the temperature gage is plugged in. Reset
power strip circuit breaker if necessary.
If gage is still malfunctioning, proceed to next step.
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