TM 10-8415-208-12Table 3-1. Unit Troubleshooting (Cont)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION4.Ice Vest Not Circulating CoolantStep 1. Check that on/off switch (3) is ONTurn ON on/off switch (3)Step 2. Check that battery connector (4) and pump connector (5) are connectedConnect battery connector (4) and pump connector (5)Step 3. Check that a charged battery has been installedRecharge or replace the battery. Refer to paragraph 3-8. 3Step 4. Check that temperature regulating valve (6) is openOpen temperature regulating valve (6)Step 5. Check if pump (7) is runningIf pump (7) is malfunctioning, replace the ice vestStep 6. Inspect coolant supply tubing (8) for blockageRemove blockage from tubing (8)Step 7. Ice vest continues to malfunctionReplace the ice vest. Notify your supervisor3-8
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