Extra Edition

Troubleshooting Challenge: A Heat Pump That Kicks Off

November 5, 2012
In this month’s troubleshooting problem we have a customer who can only tell us that their heat pump “isn’t working” and “the temperature in the building isn’t right.” When you arrive, you confirm the system isn’t operating properly. The indoor fan motor is running normally, but the building temperature is far from the thermostat set-point.


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Towards Improving the Design of Cast Iron Components for Refrigeration Equipment - Part 3

November 5, 2012
The first two parts of this series dealt with the use of cast iron components in refrigeration equipment. This last part will focus on the construction of such components.


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The Top Mistakes Businesses Make During Emergency Planning

November 5, 2012
According to a 2012 study of more than 1,300 U.S. workers, 75 percent of employees believe their company is not well-prepared for a natural disaster. Cintas Corp., a leader in first-aid and safety products, identifies seven mistakes businesses make in emergency planning to encourage better preparation.


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New Chillin' Brew Panels Keep Beer at Coldest Possible Temperature

November 5, 2012
Entropy Solutions Inc., a bio-based specialty company, has announced the launch of Chillin’ Brew™ panels, a new product designed and engineered to keep beer at the absolute coldest temperature possible.


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Btu Buddy 115: No Cooling Call, Condensate Problem

October 22, 2012
Bob and Tim have arrived at a “no cooling” call at a commercial building location. They went first to the thermostat and noticed that the indoor fan was running, but there was no cool air coming out of the air registers.


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Towards Improving the Design of Cast Iron Components for Refrigeration Equipment - Part 2

October 22, 2012
In the first part of this three-part series, we talked about the effect cold shortness has on the use of cast iron in refrigeration equipment. Now we will look at porosity and abrasion resistance.


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Employers Should Prepare for More OHSA Whistleblower Investigations

October 22, 2012
As the Occupational Safety and Health Administration (OSHA) beefs up its whistleblower program, employers should brace themselves for more claims and investigations. Over the last year, OSHA has been developing a “multifaceted plan for strengthening the enforcement of 21 whistleblower laws under its jurisdiction.”


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Autodesk Helps Huntair Turn Operating Rooms into Cleanrooms

October 22, 2012
Autodesk Inc. has announced that Huntair Inc. has utilized Autodesk’s software to develop a unique new airflow delivery system that has the potential to reduce healthcare-acquired infections.


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Prepare Customers for the Heating Season with an HVAC System Check-Up

October 8, 2012
In an effort to reduce the more than 700 deaths that occur due to carbon monoxide (CO) poisoning each year and ensure a safe winter heating season, northern Virginia HVAC contractor Jones-Rogers Inc. emphasizes the importance of an HVAC system check-up to avoid the risk of CO exposure.


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Reduced Refrigerant Dehumidifiers Can Separate Contractors and Engineers from the Competition

October 8, 2012
Reducing refrigerant in direct expansion (DX) HVAC system designs is a trend both contractors and consulting engineers are using to distance themselves from the competition. While refrigerant reduction has been fairly common in conventional air conditioning, it’s only now emerging in the category of indoor pool (natatorium) dehumidification.


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