Precision Ultrasonic Cleaning Systems


3678 Bassett Street Santa Clara, CA  95054 Phn: (408) 727 8388 Fax: (408 ) 727 8997
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Stainless Steel Hood with tanks and fire suppression System

 Solvent Ultrasonic Tanks
316 L stainless steel construction
Electro-Polished Tank Interiors
Chilling Coils
Condensation Coils
Overflows
N2  Systems
Lip Vent Exhaust Systems
Teflon Coated Coaxial Steel Reinforced Cables to Generator
Teflon Seals on Transducer Compartment
Fire Suppression Systems
Stainless Steel Work Hoods
Choice of 40,68, or 170 kHz Frequency or dual frequency generator

 

Double overflow Tank with 12" Freeboard area and chilling coils.


Typical Hood with fire Suppression System

 Specific conditions must be met with ultrasonic tanks used for solvent cleaning. There are two categories of solvent tank. 

A. Non Farmable Solvents
Since most solvents are low vapor pressure liquids, evaporation is a problem. This problem is solved by incorporating Freeboard room in the tank and a condenser coil at the top of the freeboard. Free board is usually defined as the distance from the liquid surface to the top of the tank. In solvent tanks this distance should be equal to the largest opening dim of the tank. [ if you tank is 10" W x 15" L x 12" deep then the freeboard is 15" ] Lip vent exhaust is also included in the hood to prevent any fumes from escaping into the work area.


B. Flammable Solvents.
Ultrasonic tanks that use flammable solvents such as Isopropyl are extremely dangerous as the ultrasonics will tend to vaporize the solvent and create a cloud of solvent above the tank. Because of this, the addition of  the free board, condensation coils, Stainless Steel fume hoods, air valves for fill and drain  and  other safety systems are required.

The tank itself is fitted with positive pressure N2 purge systems between the inner and outer shells of the tank. All wires should be sealed at the connection points, and the electrical wires should be Teflon coated. The tank should be mounted in a stainless steel fume hood with full exhaust capabilities and a built in fire suppression system. A number of infrared detectors are mounted in the plenum, deck area, and control module to locate any spark or flash over. The system will then dump CO2 into the entire hood. 

In addition, the systems must be approved by your in plant and local government fire authorities, tm associates can design and build these systems to your requirements.