TM 5-4220-227-14Table 4-2. Unit Troubleshooting Procedures (Cont).MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION2.RECOMPRESSION CHAMBER SLOWLY LOSES AIR PRESSURE.NOTEThis procedures requires two persons.Step 1. Systematically open and close ELP-011, ELP-012, the O/L primary and secondary exhaustvalves, ELP-007, ELP-008, the I/L primary and secondary exhaust valves, and ALP-045 theM/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 anyforeign matter that may be in valve body. If valves still malfunction, notify DirectSupport 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 andSecondary air supply valves are closed.Open the primary exhaust valves. Adjust the valves to maintain the desired depthand flow rate.Step 2. Check digital temperature gage over a span of 15 minutes for temperature variation. Asharp 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. Resetpower strip circuit breaker if necessary.If gage is still malfunctioning, proceed to next step.4-16
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