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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This article will target refrigeration systems that utilize air cooled condensers, but the efficiencies to be gained apply to the users of evaporative condensers as well. First, let us remember a couple of important principles of refrigeration; 1) heat (energy) always flows from higher to lower temperatures, and 2) the function of the condenser is...
You are receiving this notice because you are the owner / operator of a refrigeration or air-conditioning system that utilizes R-22 refrigerant and we want you to understand, and be prepared for, the rapidly rising cost of this refrigerant. BACKGROUND:  The United States is bound by an international environmental agreement, called the Montreal...
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 operating an evaporator that is...
Check your oil safety switches! Many commercial refrigeration compressors (i.e. Copeland) and essentially all industrial reciprocating compressors, like Vilter 450, 440 & 350 series, have force fed lubrication systems.  The oil that is in the crankcase is pumped to various journals and bearings to lubricate these internal parts.  The oil pump...
Don’t forget to check and maintain your refrigerant leak detection equipment! The typical ammonia (and other refrigerants) leak detection system consist of one or more sensors communicating to a readout or display.  Internal in the sensor is a “cell” that picks up the ammonia in the environment and provides the initial signal to the sensor...

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