RESCo Maintenance Checklist

• Document No.

• Audit Title

• Client / Site

• Conducted on

  Date

• Prepared by

• Location
  Address

• Personnel

Site Details

• Date of Inspection

  Date

• Service Technician

• Site Name

• Project #

• System Size

• COD Date

  Date

• Site Contact

• Nearest Major Intersection

• Type of Work / Scope of Work : (Very brief description) (Extent of work)

• Annual Maintenance Inspection - Year 1

Rooftop Maintenance

• 1. Verify module cleanliness. Is cleaning recommended. Include photos. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 2.Check array for broken, loose or missing modules. Inspect racking hardware for damaged or loose fasteners or components and unsecured wiring or MC connectors. Status:<br>

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 3. Note any obvious areas of concern – rooftop i.e. ponding. <br>Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 4. Inspect array for build-up of debris, clean as required. Note any presence of vegetation (weeds). Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 5. Look for any new roof obstructions that could shade array. Status :

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 6. Check for corrosion between grounding conductors, PV frame and any galvanized steel (if applicable). Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

Electrical Inspection

• 1.Visually inspect DC wiring throughout array. Check condition of plastic wire ties and insulation materials between wires and metal edges in array - replace as required. Status:<br>

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 2. IR photograph all DC connections in combiners to note possible hot spots. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 3. IR photograph all DC connections in Re-combiner / DC disconnects. Status :

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 4. Check AC/DC disconnects and combiners for: corrosion, heat distortion, moisture entry, insect or rodent issues and connection integrity. – Photograph areas of concern. Status :

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 5. IR photograph all AC connections. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 6. Inspect wire runways, piping/conduit and note any damage or need for replacement, sealing etc. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 7. Test combiners - record open circuit voltages and operating amperage. Status:<br>

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 8. Inspect weather station and sensors -Inspect and clean Pyranometer if required. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 9. Confirm torque on any suspect AC field connections – Re-torque as required. Torque any factory connections as required. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 10. Confirm Torque on all DC field connections – Re-torque as required.<br>Torque any factory connection as required. Status:<br>

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 11. Inspect data acquisition system components and verify operational (if applicable). Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

Inverter Specific Maintenance

• Est, Time

  Date

• 12. IR photograph all AC/DC connections. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 13.Check torque on all AC/DC field connections – Re-torque if required. Status:<br>

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 14. Inspect Inverter for external damage. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 15. Check cable entry fittings. Visually inspect for moisture intrusions. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 16. Check display and record any displayed fault codes, warnings, errors or unusual values. Status:<br>

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 17. Clean area around inverter. Status :

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 18. Clean debris from inverter, if required. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 19. Clean air filters and clean air returns, if required. Recommend replacement if required. Status :

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

• 20. Confirm system is operational. Status:

  Good

  Unsatisfactory

  N/A

• Comments / Action Items

• Add media

  Media

Safety Concerns

• Arc Flash gear required when torqueing to shutdown disconnects

• Safety Concerns:

Follow Up

• Additional Maintenance Required or Recommended

• Comments

• Warranty Items

• Action Items to be Addressed

• Other

• Signature

  Sign

• Date

  Date