Solar Dryer

• Polycarbonate panels wiped clean — dust reduces solar heat gain by 30%
• Drying trays washed, dried, and lined as required
• Airflow vents FULLY OPEN
• No previous produce residue on trays

1. Spread sliced produce on trays in SINGLE LAYER — overlapping = uneven drying
2. Load trays by 8:00 AM to maximise sun hours

1. Spread sliced produce on trays in SINGLE LAYER — overlapping = uneven drying
2. Load trays by 8:00 AM to maximise sun hours
3. Check progress every 2 hours — turn produce if required
4. Drying time: Banana 6–8 hrs | Gongura 4–6 hrs | Mango 8–10 hrs | Drumstick 6–8 hrs
5. Test: product should be leathery (slices) or brittle (for powder). No moisture when pressed.
6. Remove trays by 5:00 PM — evening humidity reverses drying

6. Remove trays by 5:00 PM — evening humidity reverses drying

• Remove all produce
• Wash trays
• Wipe polycarbonate panels
• Close airflow vents at night — prevents dust ingress
• Log: produce type | quantity loaded | drying time | moisture test result | weather condition

• Interior gets EXTREMELY HOT in peak sun — heatproof gloves when handling mid-day trays

Panels cracked or yellowing (UV degradation — replace panels) | Tray mesh torn (replace — insect entry risk) — call supervisor

Routine prevention is embedded in the pre-operation and post-operation checks; no separate time-based preventive-maintenance interval is stated on the source card.