Refrigeration Repair Guide
For sale is one new slide type calculator used for troubleshooting Air Conditioning and Refrigeration Systems. Both sides of this tool have problems with recommended solutions and the back side has compressor wiring diagrams. The last photo shows both sides of the tool. This tool is made of thick durable water resistant paper stock with corner rivets. It fits easily in your shirt pocket at approximately 7.5 inches high by 3.5 inches wide. If you have any questions, feel free to ask and I will answer them to the best of my ability. Large quantities (10 or more) are also available at a discounted price! I also have charts for R- 410a systems, low temp refrigeration and air duct sizing! Check them out in my ebay store while supplies last! Instructions for using Slide Chart: 1: Set blue dot at appropriate problem. 2: Read probable causes opposite arrows.
`Refrigerant Guide Back + Head Pressure Temperature HVAC
For sale is a Refrigeration Calculating guide to back and head pressures. For use with R12, R134a, R22, R123, R404a, R407c, R410a, R507, and R508b. On the front of the guide is a sliding chart to calculate back pressure, air temperature and head pressure for specific suction temperatures and condenser temperatures. This guide is simple to use and takes the guess work out of checking proper charge of a system. On the back side is a color chart for start, run and common wires on specific models of compressors. Also on the back is a thermostat control setting chart for different types of equipment and a guide for evaporator temperatures. This item is made of thick cardboard stock with metal corner rivets and is 7.25 inches long by 3.5 inches wide. Check out my other HVAC reference guides including superheat calculators and duct sizing charts available in my ebay store while supplies last!