The Dual-Pneumatic atomizing system operates with air and water under pressure - air at approximately 30 psi and water at approximately 32 psi. Air consumption is figured at 12 SCFM per 100 lbs. of water atomized per hour. A safety factor of 20% should be added for any potential line losses.

Operation is fully automatic and controlled by humidistats. When the relative humidity (RH) level drops below the setting on the control humidistat, the contacts on the control humidistat close the circuit, opening the solenoid valve on the air control section. As soon as pressure builds up sufficiently to atomize, the air pressure switch closes the circuit to the water solenoid valve, starting water flow. Water can not flow without adequate air pressure. All valves close if there is a power failure. The water solenoid will close if there is an air compressor failure.

When the desired level of relative humidity is reached, the humidistat breaks the circuit and all solenoid valves close, shutting off flow of air and water to the heads. The three-way water solenoid bleeds off the water pressure instantly allowing the water valve seat in the head to close immediately, preventing any chance of dripping or spitting. At the end of each cycle, the air pressure is allowed to fall gradually to zero through the heads, blowing all water from the mixing chamber of the heads. The stainless steel cleaning needle connected to the diaphragm, cleans the water orifice of the heads at the end of each ON cycle. By completely drying the mixing chamber of each head, mineral buildup is prevented. This cleaning is so effective that YEARLY maintenance is usually all that is required!