Arkansas HVACR NewsMagazine September 2022

HVACR NewsMagazine September 2022

Tech News

39. Connect an amp clamp to compressor common and observe as you turn on the condenser breaker/disconnect. 40. Test the L1 & L2 voltage and ensure it is in the acceptable range 41. Allow the system to run for at least 10 minutes. During this time, you can begin cleaning up. • Start filling out the service call/collecting model and serial numbers (if required). • Inspect suction insulation and thermostat wire outside for damage or poor splices • Perform the “under load” capacitor test (you can read our article about that test HERE). • Read across the contactor points to see if there is any voltage drop in the contact points. 42. Once the system has run for 10-15 minutes, perform either the non invasive test protocol (read about non invasive testing HERE) or check and note suction, head, superheat, subcool, and delta T according to the “5 pillars” tests and any manufacturer guidelines ( read about the “5 Pillars” test HERE). 43. If the system is a heat pump, test the opposite mode (usually heat) to ensure the reversing valve shifts properly and the system runs. 44. Note any suggested repairs or improvements to the customer and get their response. 45. Clean up fully and double-check drains, refrigerant caps, and disconnects. Call on standby. 46. Wrap up paperwork with the customer. 47. Ask the customer if there is anything else you can do to make their experience better

and if they can think of any way you or the company could improve. 48. Complete all call notes, finish timesheet entry, and tidy up your van in preparation for the next call. — Bryan P.S. – Since publishing this article the first time, I've been asked how long we “give” to do it. With a maintenance procedure this thorough, the time it takes will vary a lot and can be done in 45 mins on a new clean unit all the way up to 2 hrs. Bryan Orr, HVAC School (Founder / Podcaster / Dad of 10) Bryan Orr is a lifelong learner, proud technician and advocate for the HVAC/R Trade. The NewsMagazine encourages you to subscribe to Bryan’s materials. You’ll be glad you did.

Just Checking the Air Flow??