COMPRESSED AIR SYSTEMS RULES 1. When using compressed air as a shop cleaning aid make sure everyone is away from the area being cleaned. 2. Never point the blow gun at anyone. 3. Compressed air shall not be used for cleaning except where reduced to less than 30 P.S.I., and then only with effective chip guarding and personal protection equipment. 4. Eye and face protection must be used at all times when using compressed air as a cleaning aid. 5. Keep air hoses properly stored off the floor.