Hanse VTC Series, Installation, Operation And Maintenance Instructions

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Ultrasonic Humidification Systems
System Description
The humidification systems provided with Hanse Environmental, Inc. chambers utilize
the latest in ultrasonic nebulization principles to generate the moisture required in the
chamber. The Ultrasonic Nozzle uses air and water under pressure. Atomized water
leaving the nozzle is hit by the air reflected by the resonator as sound waves, nebulized
into very small particles, like a fog, and rapidly absorbed by the air. The resonator is
adjusted at the factory for maximum atomization and proper fog pattern. The fog
pattern can be narrowed by moving the resonator further from the nozzle tip, and
conversely, widened by moving the resonator closer to the tip.
Installation
The nozzle(s) are installed at the factory for proper distribution of the moisture
introduced into the chamber. Even though the nozzles are designed for the
temperature extremes experienced in the normal operation of the chamber, it is
recommended that the nozzle(s) be removed when humidification testing is not being
performed. The nozzle(s) mounting brackets are designed for ease of installation and
removal. The direction of the nozzle(s) has been determined at the factory to maximize
the distribution of the moisture within the chamber and should be maintained in the
configuration.
The nozzle(s) are provided with hose connections that can be made within the confines
of the chamber when installing or removing them. This will reduce the time required to
go into humidification testing
Operation
The water and air supply to the nozzle(s) is regulated by in line pressure regulators.
The water pressure to the nozzle(s) is adjusted at the factory to provide the proper
amount of moisture to the chamber. The air regulator should be adjusted to maintain
the air pressure to the nozzle(s) a minimum of 15 psi above the water line pressure.
This is necessary to provide enough air pressure to open the water valve internal to the
nozzle and allow atomization to begin. The air and water supplies to the nozzle(s) are
controlled by 24V DC control valves.
The valves are controlled by the mode of operation of the chamber. When the
humidification mode is disabled, Events 3 and 4, the water supply is turned o
ff and the
line(s) are vented to drain. Similarly, the air lines are turned o ff and ported to exhaust
also. This prevents inadvertent operation of the system.
When humidity is called for, Events 3 and 4 enabled, and the nozzle(s) have been
installed in the chamber, the water valve opens applying pressure to the nozzle(s).
Authorization and Copyright of this document is
controlled by Hanse Environmental Inc.
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