Stay cool! Keep it running.

Carlson and Stewart wants to ensure that your equipment continues to run at optimal performance. On this blog, we offer important tips for maintaining your refrigeration equipment.

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August 2019 Blog Entry Author: Erik Hansen Credit: Goodway Technologies Corporation Reference: https://www.goodway.com/hvac-blog/2009/08/ammonia-as-a-refrigerant-pros-and-cons/ 2016 Article   Ammonia As a Refrigerant: Pros and Cons Last month, a 5000 pound ammonia leak occurred at a Boston-area seafood warehouse that killed one worker and forced a...
Ammonia Compressors – by Chris Savage Over the years there are and have been a variety of compressor styles that have been used in ammonia refrigeration systems.  Each of these compressor styles accomplish the same task of increasing the pressure of ammonia vapor.  They provide the motivating force that moves the refrigerant through the system. ...
Operational Efficiency: Condenser Drain Lines By: Jayson Noetzelman        Carlson and Stewart Refrigeration would like to take some time to address an often-ignored problem in industrial refrigeration systems. The problem is a lack of knowledge about pressure requirements to successfully operate a spring closed check valve. Spring closed check...
Author: Erik Hansen (source article: http://www.eurammon.com/press-room/background-articels/supermarkets-advocate-sustainable-refrigeration) Supermarkets Advocate Sustainable Refrigeration [The food retailing secle Refrigerationtor increasingly uses natural refrigerants] For a long time now, consumers not only look at quality and price when making...
DEFROSTING AIR UNIT EVAPORATORS   How often and for how long should an air unit evaporator in a cooler or freezer be defrosted?   Hot gas and electric defrosting of air units that are installed in walk-in coolers, freezers, and warehouse complexes involves a lot of expense.  If the unit is not defrosted often enough there is the wasted energy of...
Author:  Chris Savage Water in Your System? Do you have water in your ammonia refrigeration system?  How would you know if you have water in your system?  How would water get in your system?  Why does it matter if you have water in your system?  What do you do about water in your system? Have you ever been asked any of these questions about your...
Author: Marc Risdahl Ammonia Detection Systems Anhydrous Ammonia leaks in your facility pose a severe risk to the safety and well-being of all employees. Ammonia exposure can cause respiratory tract issues and in worse cases; death. This is why we at Carlson and Stewart Refrigeration know it’s crucial to have a proper ammonia detection system...
Operational Efficiency:  Compressors By:  Jayson Noetzelman           If you work in the commercial or industrial refrigeration sector you know running refrigerant compressors can be awfully expensive. We all know it is expensive, but we also know our refrigeration systems wouldn’t work without them. When a facility has several substantially sized...
October Blog Entry Author: Jarod Hansen Ammonia Silo Piping   Refrigerant cooled silos are a very common heat exchanger in the food processing industry.  Typically the liquid product in the silos is cooled by either water, glycol, or ammonia.  A large portion of industrial processing plants utilize ammonia as their refrigerant.  Some silos are...
September Blog Entry Author: Erik Hansen   R-22 Phase Out is Upon Us.  Are you Ready? December 31st, 2019 is a big day.  Not only are we rolling into the New Year and celebrating another decade gone and a new one to begin enjoying, but there is also something very important happening in the refrigeration industry on that day.  This day will be the...

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