TM 10-8415-208-12
Table 3-1. Unit Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Check the face piece (1) and head harness straps (2) for damage and that a tight seal can be
achieved.
Replace damaged components or entire face piece. Refer to paragraphs 3-10. 3. 10
and 3-10. 3. 11.
Step 4. Check hose connections for tightness.
Tighten all loose connections.
Step 5. Check that inhalation hose (5), exhalation hose (6) and coolant canister hose (7) are not clogged.
Remove all foreign matter from the hoses. Refer to paragraph 3-10. 3. 3.
Step 6. Remove top cover (8) and check the connection at regulating valve (9) and bottle valve (3).
Reseat the oxygen bottle. Refer to paragraph 3-10. 3. 1.
15.
Rebreather System Not Cooling the Oxygen
Step 1. Check that coolant canister (10) is frozen.
Replace with a frozen coolant canister (10). Refer to paragraph 3-10. 3. 2.
Step 2. Check that coolant canister hose (7) and inhalation hose (5) connections are connected.
Connect coolant canister hose (7) and inhalation hose (5).
Step 3. Inspect coolant canister hose (7) and inhalation hose (5) for cuts, holes or tears.
Replace the damaged hose. Refer to paragraph 3-10. 3. 3.
16.
Rebreather System Alarm Whistle Inoperative
Step 1. Check the pressure gauge to ensure bottle pressure is 2,400 PSIG.
If the bottle is not charged to 2,400 PSIG, replace the bottle. Refer to paragraph 3-
10. 3. 1.
Step 2. Check the Stat-O-Seal for damage.
Replace a damaged or missing Stat-O-Seal. Refer to paragraph 3-10. 3. 5.
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