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Why maintenance matters

Dust, debris, bird droppings, and general wear can reduce solar panel output if ignored. A light, regular maintenance routine preserves efficiency, protects warranties, and keeps ROI on track.

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Core maintenance checklist

1. Cleaning for peak output

• Schedule: Clean panels when visible dust, leaves, or droppings accumulate; frequency depends on local conditions (dry seasons need more).
• Method: Use soft water and a non‑abrasive sponge, and avoid harsh chemicals to protect the glass and anti‑reflective coatings.
• Safety: Clean in the early morning/evening when panels are cool; ensure secure footing and turn off DC isolators if required by your installer.
• Impact: Consistent cleaning helps maintain high efficiency and stable energy yield.

2. Visual inspections

• Panels: Look for cracks, hot spots, delamination, or loose frames.
• Cabling & connectors: Check for UV damage, corrosion, or loose terminations.
• Mounting: Verify tight fasteners, corrosion resistance, and roof waterproofing integrity.
• Reason: Early identification prevents performance drops and protects system lifespan.

3. Monitoring and performance tracking

• Apps/portals: Review daily/weekly generation trends; investigate sudden drops.
• Compare to baseline: Track against installer’s yield estimate; consider seasonal variation.
• Alerts: Act promptly on inverter or monitoring alarms to limit downtime.

4. Inverter and electrical checks

• Ventilation: Keep the inverter in a cool, dust‑free, shaded location; clear vents regularly.
• Settings & firmware: Update per manufacturer guidance and grid code requirements.
• Protection devices: Test surge protection, DC/AC isolators, and earthing continuity annually to safeguard electronics.

5. Professional servicing

• Annual service: Book a yearly inspection for IV‑curve testing, thermal imaging, string checks, and structural review.
• Documentation: Maintain service records to support warranty claims and insurance.
• Outcome: Pro checks optimize efficiency and extend component life.

Seasonal tips and local conditions

• Monsoon prep: Clear gutters/drains; check seals and cable glands for water ingress.
• Dry/dusty months: Increase cleaning frequency to counter airborne particulates.
• Bird activity: Install humane deterrents to reduce droppings and nesting near arrays. Regular adjustments to cleaning and inspection frequency based on local weather keep output stable year‑round.

What to avoid

• Abrasives and pressure washers: Can scratch glass and damage seals.
• Standing on panels: Risk of microcracks and warranty issues.
• Unqualified electrical work: Always use certified technicians for inverter or wiring tasks. Avoiding these mistakes preserves efficiency and manufacturer warranties.

Maintenance schedule at a glance