1. Clean Coil, Condensation Pan & Lines

• Pull off front cover of AC coil, slightly lift up high enough that the underside of the coil can be inspected with a camera or mirror.

• If needed use a bristle attachment on a vacuum or a commercial foam cleaner and clean any buildup off the under side of the coil.

• Inspect and clean the condensate pan and drain lines as needed to ensure the condensation can flow freely.

2. Clean & Straighten Condenser Coil

• Check the condenser for build-up on the exterior side.

• If there is build up, remove the outer casing if needed, gently rinse off what you can with a low-pressure pump sprayer that has an AC Coil cleaning agent in it, or a hose after applying a foaming cleaning agent.

• Do not apply high water pressure as this will cause some build-up to be pushed further into the fins of the condenser or could bend the over. Straighten any bent fins with a fin comb.

3. Check Line set & Insulation

• Check all lineset for kinks or leaks & check insulation for dry rot, rips or missing sections.

• Replace any sections that are not adequate.

• Lineset's exposed to sunlight shall be protected from UV degradation.

4. Check Fan Speed

• Verify fan speed setting are to manufacturer specification.

5. Check Duct Static Pressure

• Check that static pressure is within manufacturer specifications

6. Check Delta-T

• Check the 𝚫-T. The 𝚫-T should be between 17-20⁰.

7. Check Capacitor

• Use a multi-meter to check that the capacitor is within the range specified on its data label.

8. Check Fan Amp Draw

• Use a multi-meter to check that the fan amp draw is within the specifications listed on its data label.

9. Check Compressor

• Use a multi-meter to check the compressor amp draw and compare it with the manufacturer specifications for both Rated Load Amps (RLA) and the Locked Rotor Amps (LRA).

10. Charge

• Only consider charging if the 𝚫-T or compressor amperage are not within manufacturer specifications after all AC components are clean, insulated and the condenser fan amperage and duct static pressures are within range.

• You only ever hook up your gauges when necessary. Doing so when not needed may cause loss of refrigerant or unwanted air or contaminants into the system.

11. Document

• Complete the A/C Start Up and Performance Checklist

EPA-608 Card Required:

• Only EPA-608 Universal or Type II Certified individuals are allowed to perform this measure.

Follow Manufacturer Specs

• All equipment must be charged to manufacturer specifications.