Troubleshooting Puzzle: A System That’s Blowing Warm Air In July Jim Johnson July 15, 2020 No Comments This month’s troubleshooting situation involves an air-to-air, package unit heat pump that is approximately nine years old.Read More
Refrigerant Density Can Affect Compressor Capacity Service techs can make adjustments to optimize performance John Tomczyk July 3, 2020 No Comments Let’s look at how the density of refrigerant entering the compressor’s cylinders affects the mass flow rate of refrigerant through the compressor.Read More
Working With an Unknown Refrigerant This can be a difficult, and potentially costly, scenario Joe Marchese July 3, 2020 No Comments When working on a refrigeration system, technicians may occasionally come across one where the type of refrigerant is unknown.Read More
What to Look For When Purchasing A Refrigerant Recovery Machine Reliability, versatility, and speed are usually the features that matter most Joanna R. Turpin June 30, 2020 No Comments Refrigerant recovery machines are one of the most expensive tools that contractors own, so it’s important to make the right purchase decision.Read More
Troubleshooting Puzzle: A Reach-In That’s Not Maintaining Temperature Jim Johnson June 9, 2020 No Comments In this month’s troubleshooting problem, the equipment is a reach-in food and beverage storage unit.Read More
How to Prepare Equipment for Long Shutdowns Precautions must be taken for refrigeration and air conditioning systems John Tomczyk May 26, 2020 No Comments Long shutdowns can wreak havoc on refrigeration and air conditioning systems if certain steps are not taken.Read More
Several Options Available to Connect Copper Tubing Brazed and pressed connections both have advantages and disadvantages Joe Marchese May 26, 2020 No Comments Today, the use of pressed connections for joining both hard drawn and soft copper tubing is gaining popularity for many reasons.Read More
Troubleshooting Puzzle: A Split System That’s Not Cooling Jim Johnson May 11, 2020 No Comments In this month’s troubleshooting problem, the equipment is a split system that’s approximately 8 years old.Read More
Liquid Refrigerant, Dense Vapors Can Damage Compressors To prevent these conditions, the proper amount of superheat must be set at the TXV John Tomczyk May 2, 2020 No Comments Refrigeration and a/c compressors are vapor compressors, meaning they are designed to compress refrigerant vapor, not liquid refrigerant.Read More
Attack the Distribution System First, Studying Airflow For greater profit and satisfaction, pause the replacements and follow the airflow Robert Beverly April 23, 2020 No Comments First, attack the distribution system. Second, replace equipment.Read More