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Beth Ryan, Editor
bryan@secowarwick.com

Feature:
CAB Brazing Systems for HVAC Aluminum Condensers and Evaporators

Switching from copper to aluminum? 

Many manufacturers are switching from copper to aluminum condenser coils to meet new efficiency standards and reduce material costs.  SECO/WARWICK offers Controlled Atmosphere Brazing (CAB) Systems for efficient production of aluminum condensers and evaporators:

High Volume Production - Radiation CAB Furnaces are an ideal method for brazing similar size products in a continuous flow environment. If you intend to produce a single or only a few variations of that product, a radiation furnace system makes sense.  A typical installation will process 50-100 condensers/ Hr.  The furnace is designed to use a stainless steel muffle to contain the nitrogen atmosphere and provide uniform heating of the products. The heat input into the furnace chamber is proportionally controlled through electric heating elements or natural gas fired burners to heat the muffle which in turn heats the products.

Indexing- The Active Only® Semi-Continuous CAB Aluminum Brazing Furnace system is an indexing furnace designed to meet the needs of aftermarket manufactures or companies that have a wide variety of production needs from day to day. The furnace is designed to braze 4-8 condensers per hour, depending on the load area, on a semi-continuous basis.  The unique feature of the patented convection muffle arrangement is the placement of our braze cycle time control thermocouples. These thermocouples are the heart of this "intelligent" system and the indexing cycle when loading the furnace intermittently. This feature allows loading of the furnace load areas with products that have different masses, one right after another, without adjusting the furnace parameters. The heat exchanger alloys must stay the same but the mass of the cores may change from load area to load area.

For more information.visit our CAB web or contact Mike Jacobs direct at mjacobs@secowarwick.com or call 814-332-8598

 

CAB Brazing News & Events

SECO/WARWICK will exhibit in booth 2943 at the AHR exhibit January 26-28, 2009 at McCormick Place in Chicago.

Did you miss our CAB Brazing Seminar?

Mark your calendar for May 11-13, 2009 to attend this informative seminar to learn more about CAB Brazing manufacturing cells – how to buy, set up and maintain an efficient and profitable production system. Stay tuned for more information.

Click here for Information & Registration

E-mail Elisha Schreiber, Seminar Coordinator, to add your name to our pre-registration list.

 

Maintenance Tip: Best Practices for Wet Flux Systems

Mr. Manos Eliades, Technical Service Manager – NAFTA, Solvay Fluorides LLC, presented an in-depth talk on NOCOLOK® flux for the SECO/WARWICK CAB Brazing Seminar held in May, 2007.   He reported that the most common flux application method for CAB Brazing is spraying an aqueous suspension (wet fluxing) because the chemical and physical flux properties achieved the best results.  Solvay estimates that 80% of CAB Brazing operations use wet fluxing methods.  He offered these tips for best practices in managing wet fluxing systems:

• For reliable start-ups, drain and flush the pumps, piping and the entire system
• Keep conveyor wet (with flux slurry or water) to provide lubrication and prevent flux agglomeration.  Experience shows that dried flux on moving steel parts dramatically reduces service life
• Filters installed on the return part of the loop should be doubled:  one is the “working” filter and one is the by-pass filter and can be removed for cleaning
• It is useful to have two entire spray manifolds with nozzles (one spare).  In case of nozzle blockage, the manifold can be easily replaced thereby minimizing downtime.
• Spray nozzles should be “quick release” to allow rapid exchange.
• The fluxing booth chamber must be washed down periodically (once per shift) to prevent flux agglomeration and drying on chamber walls.

For more information on NOCOLOK flux, visit http://www.solvayfluor.com/chemicals/NOCOLOK_Flux

NOCOLOK® Flux is a registered trademark of Solvay Fluor GmbH.    

READ MORE MAINTENANCE TIPS>>

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