TM 5-4220-233-142-5. SAFETY PROCEDURES PRIOR TO OPERATION OF THE COMPRESSED GAS SYSTEMa.Safety Precautions. The following safety precautions are necessary for the safe operation of the Servicing Unit:(1) Only qualified operators knowledgeable in the operation of high pressure breathing air equipment and with complete knowledge of the controls and indicators on the Servicing Unit should attempt these procedures.(2) When handling opened connections care should be taken not to contaminate control panel ports and hose end fittings. Under certain conditions contamination such as oil, grease, dirt, and sand, etc. can cause combustion when in contact with a high pressure air source.(3) Valves should always be opened slowly. Rapid acceleration and subsequent compression ofbreathing air at high pressures can cause extremely high temperatures that upon contact with contaminants can cause a combustion hazard.(4) Care should be taken when working around high pressure air systems. Pressure should always be vented before hoses are connected or disconnected from the control panel. Also, hoses should never be stretched to reach a connection.(5) Eye protection should be worn at all times during operation or when venting breathing air from the Servicing Unit.(6) The Servicing Unit must be attended to at all times when recharging storage cylinders or charging SCUBA cylinders(7) Strain reliefs must be connected prior to recharging of SCUBA cylinders. Failure to do so will resultin an unsafe condition.2-20
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