Copper Vs. Aluminum Windings in Motors January 18, 2001 One Comment Engineers question the quality and performance of copper and aluminum windings in motors.Read More
Tech Tips for Thermostatic Expansion Valves December 6, 2000 One Comment It’s never a waste of time to review TEVs — their operating principles, installation, maintenance, and troubleshooting.Read More
Using Defrost Termination and Fan Delay Controls November 30, 2000 No Comments What happens if a system doesn't have a defrost/termination/fan delay control?Read More
Charging Methods for Metering Devices October 10, 2000 No Comments Devices used to measure subcooling, evaporator superheat, and total superheat save time, money and aggravation.Read More
How to Determine Speed for an Ac Induction Motor September 30, 2000 One Comment Learning to understand the relationship between motor and speed and poles will help you become a more effective field service technician.Read More
Don't let that reversing valve outsmart you August 9, 2000 12 Comments Reversing valves can be difficult to remove because they have four solder joints to deal with at the same time and, to make matters worse, they are very heat sensitive.Read More
Here's a closer look at EPR valves March 29, 2000 No Comments A quick review of EPR valve basic designs, principles of operation, and application of these valves.Read More
Diagnosing and curing a sick solenoid valve March 16, 2000 No Comments Here are some tips to a quick recovery after experiencing a solenoid valve malfunction.Read More
Compressor protection starts with a knowledge of refrigerant-oil basics May 3, 1999 No Comments Refrigerant control becoming a more important factor in gaining reliability.Read More