Summer is upon us, and the temptation to open your doors and windows comes along with the good weather. If you are a business owner with any refrigerated merchandising equipment and have "given in" to the temptation, please remember the purpose of your equipment: to keep contained product displayed in a cool environment. During the process of refrigeration, humidity is removed from the air being introduced into the merchandiser allowing product to remain chilled while contained. If any doors and/or windows are open, your refrigeration equipment will act as a dehumidifier for the great outdoors, rather than a cooling display case for your product, as it is intended,
Most of our units are designed to maintain product temperatures at 40 degrees or less on average over a 24-hour period, provided that the unit is loaded with pre-chilled product. High ambient conditions and humidity can also cause higher than normal temperatures and excess condensation, and therefore should be properly controlled as designated by NSF Standards; Type I refrigerated units are designed to run in 75 degrees and 55 percent relative humidity or less and Type II refrigerated units are designed to run in 80 degrees and 60 percent relative humidity or less. If a unit is operating in any condition where these standards are not met, and/or a window, door or A/C vent is within a few feet from the unit, it is possible that the unit will produce excessive condensation and allow water to produce at a higher rate than the units were engineered to evaporate. So before you make that call about condensation on your unit or water on the floor, make sure your doors and windows are closed and your A/C is set to obtain the necessary ambient conditions for your equipment to run efficiently. This will also avoid unnecessary service calls that are not covered under warranty and issues that service providers are unable to fix. If you find water on the floor, ask yourself these 10 questions: 1. Is the drain free of debris? 2. Is the drain hose correctly positioned over the evaporator pan? 3. Is the evaporator pan overflowing? 4. Is the evaporator pan plugged in and proper voltage supplied? 5. Has the evaporator pan been cleaned to eliminate build up on float? 6. Is the condenser coil dirty, causing the unit to produce more condensation? 7. Are there overhead vents blowing into and on the case? 8. Is the A/C turned off or warming up at night? 9. Do you have high ambient temperatures and humidity? 10. Is the condensation from another source? This post was written by Tom Thompson, Matt Pastotnik & Ellyse Birch of Technical Services.
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WHAT WE DOWe create high performance, self-contained and remote refrigerated display cases for excellence in food staging. Archives
January 2015
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