(3)Operationa.To operate BD series oilless air compressor correctly and safely read carefully this operation instruction.b.Insert the plug of the machine in power socket of single-phase 10A/16A/20A .Open ball valve (See Fig.1-10), turn the operation handle for pressure switch to “ON” position, the machine will run in a normal condition. Note: When selecting this series oillless air compressor suitable type of air compressor should be chosen based on air consumption