Issue link: http://read.uberflip.com/i/897697
36 / NOVEMBER.DECEMBER.2017 USICERINKS.COM DURING THIS PAST YEAR I have heard lots of stories about sub-floor heating systems not working, condenser towers failing, compressors failing, brine pumps failing, and the worst one— chillers failing. As many of you know that have taken the Basic Arena Refrigeration course, there are several pressure gauges and thermometers that are on the system. However, there are six key ones to check each shift that can alert you to refrigeration system problems early on. You can tell a lot about your refrigeration system just by looking at these six gauges and thermometers: 1. High Pressure Gauge (Discharge) 2. Low Pressure Gauge (Suction) 3. Brine Thermometer In 4. Brine Thermometer Out 5. Sub-Floor Thermometer Out 6. Sub-Floor Thermometer In With these six readings you can know the health of your system. What I am always amazed about when I go into a rink's refrigeration room is the number of thermometers and gauges that are broken or so dirty you cannot read them. Get them fixed! These six readings can tell you about the key items in your system starting to go bad. SUB-FLOOR THERMOMETERS Recently I heard from a rink operator that found a frost heave starting to happen under their rink. When asked what the sub-floor thermometers read the comment back was that the "computer sensor reading was at 78 degrees Fahrenheit." When investigated, two things were found. The sensor for the sub-floor was mounted in the return pipe in the compressor room. The 78-degree Refrigeration Review 6 Key Pressure Gauges and Thermometers to Check , The High and Low Pressure Gauges are the pulse of your refrigeration system. PHOTOS: COURTESY OF DAVE WESCOTT by DAVE WESCOTT, CIT, CPE HOW To Pressure Gauges & Thermometers