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When interviewing for a dispatcher, Terri Hardt said to look for someone with a good work ethic and values similar to yours. You can teach behaviors; you can't teach ethics.
Make your dispatcher a vital part of the service team.
June 6, 2024
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A respectable collection of some of the thousands of products that have shaped the HVACR industry, from 1851 up to today.
June 4, 2024
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A business management guide from Contracting Business.
July 22, 2022
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Systematizing
In order to make your company attractive to buyers, and for you to be able to completely exit the company, it has to be able to run on its own without you.
May 25, 2021
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Check out this advanced planning guide to the 2019 AHR Expo. It features more than 2,100 leading manufacturers and suppliers from across the world that are exhibiting at the show...
Jan. 9, 2019
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Meet some of the technology leaders in the HVACR/Hydronics market and review the technology and new products they're bringing to the market.
Jan. 8, 2019
Www Contractingbusiness Com Sites Contractingbusiness com Files Danfoss Gas Detector
Next generation in Danfoss gas detection products is 'plug and play,' accurate and compliant.
July 3, 2018
Moisture in crawlspaces can be a problem in any area of the country. Here's expert advice on solving the problem, once and for all.
May 18, 2017
Yellow Jacket
Refrigerant Gauges
Proper performance of heat pumps and air conditioners are determined by many factors, but chief among them is proper refrigerant charge
May 18, 2017

Sheet Metal Today

Portable Plasma Cutting System has Internal Air Compressor Lincoln Electric, Cleveland, OH, has introduced the Tomahawk™ 375 Air, one in a line of portable plasma cutting systems designed for use in HVAC applications, on-site maintenance, service tasks, ...
Dec. 1, 2010
2 min read

Portable Plasma Cutting System has Internal Air Compressor
Lincoln Electric, Cleveland, OH, has introduced the Tomahawk™ 375 Air, one in a line of portable plasma cutting systems designed for use in HVAC applications, on-site maintenance, service tasks, small construction sites, demolition, and rental applications. The Tomahawk 375 Air includes an internal air compressor, eliminating the need for an external air source. This machine can be used anywhere 208 or 230 volt single phase 60 Hz power is available. The 375 Air features continuous output control to focus the plasma arc for up to 5/16-in. recommended, 3/8-in. maximum and 1/2-in. severance cut thicknesses. The machine produces 10-25 amps output, and is rated at 25 amps at 90 volts, 35% duty cycle. Tomahawk plasma cutting systems are designed for cutting mild steel, stainless steel and aluminum. A touch start system delivers reliable plasma arc initiation without high frequency while rapid arc restrike capability ensures users can quickly cut through gaps and expanded metal. The front-panel purge control makes it easy to adjust air flow without initiating a plasma arc. — Lincoln Electric
lincolnelectric.com (request bulletin E11.100).
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Auto-darkening Welding Helmets Offer Digital Versatility
The Digital Elite™ series of auto-darkening welding helmets from Miller Electric Manufacturing offers four modes of digital versatility for intense applications. It offers the precion that comes with digital control, with memory. The viewing area measures 3.85 in x 2.38 in / 9.22 sq in.

Its four modes are:

  • Weld mode: variable shade #8-13
  • Cut mode - variable shade #5 - 8
  • Grind mode - light shade #3
  • X-mode - variable shade #8 - 13

The Digital Elite's electromagnetic arc sensing eliminates sunlight interference when working outdoors. Four arc sensors operate at 1/20,000 sec lens speed. The helmet's sensitivity and delay control is .10 to 1.0 seconds. TIG rating is 5 Amps, and it has a manual on/auto-off power control, and accessible bottom-mounted controls. The Digital Elite helmets weigh 18 oz. Two replacement lithium batteries provide 3,000 hours of power, with solar assist. The package includes a $25 accessory package consisting of five outside and two inside cover lenses, a helmet bag, and comfort cushion. The helmets meet the ANSI Z87.1-2003 (high impact) standard. Shown is the Stars and Stripes II™ model — Miller Electric
millerwelds.com
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