Hvac School - For Techs, By Techs

Mike Klokus and Jeff Crable walk us through Kalos Services' light commercial PM process.  First, we verify that everyone is clear on the agreement. Then, we start the PM with a thorough visual inspection, taking copious notes about things that look concerning.  Once we’ve done a visual inspection, we clean the condensers. We try to use only water when possible, though safe cleaners may be necessary in some cases. When checking the electrical components, we make sure the wires are neat and have tight connections. We take our electrical readings and check the capacitor. Then, we check the system’s refrigerant temperatures and pressures. We measure the superheat, subcooling, and pressures throughout the system and record those. Once we move indoors, we check and replace the filter in accordance with the agreement. We do another visual inspection at the air handler, paying special attention to blower wheel cleanliness, panel insulation, and wire routing and connections. When cleaning the evaporator, we want to tr