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Metal and Nonmetal National Mine Rescue Contest Rules

Metal and Nonmetal National Mine Rescue Contest Rules

Metal and Nonmetal National Mine Rescue Contest Rules

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(Al ter nate Re lief Valve Test, can be per formed af ter Step 13.)TESTERSTEP SETTING PROCEDURE HINTS11.Con stant Me ter ing Pos. Pres. In flate breath ing bag.ValvePump ingFit seal ing cap overtap pet of re lief valve.Dosage Con stant me ter ing.05-2 L/min dos age should liebe tween 1.5 <strong>and</strong>1.9 L/min.12.Min i mum Valve Neg. Pres. Pump slowly un til min-Pump ing imum valve is open ing.Min i mum Valve shouldopen be tween 0.1 <strong>and</strong>2.5 mbar.13.Bypass Valve Leak Test Press red but ton.Breath ing bag in flates.(Al ter nate Re lief Valve Test) Ob serve Read ing on Rz,re lief valve should openbe tween 2 <strong>and</strong> 5 mbar.14. Low Close cyl in der valve.Pressure Warn ing sounds at 700Warn ing psi.15. Bat tery If Fail ing:Check Alarm sounds 5 Times.Red in di ca tor flashesfor 30 sec.Bat is dis played.56

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