ABB Solar Inverter PVI-3.0-3.6-3.8-4.2-TL-OUTD-S-US (-A)

- If not performed more often, ABB recommends having the systems checked after about 5 years of activity to maintain the correct working performance.;

- Clean the equipment at least annually; in particular, the lower grill on the wiring box through which the air for cooling the heatsink passes and the heatsink itself. If possible, use an extractor or suitable pipe cleaners.

- Annually or in the event of malfunction, check that the environmental conditions have not changed drastically (exposure to weather conditions); also check that the inverter chassis has not been isolated by foreign bodies such that airflow may be affected.

- Annually or in the event of malfunction, check the tightness of the cable opening plugs, the fitting of the connectors and front covers. Loose fittings can allow water seepage into the cabinet possibly leading to short circuit conditions due to high humidity.

- Check the cooling air path and heatsink for blockages.

- Check internal cooling fan operation (monitor start-up for warning).

- Check all electrical connections using an IR camera or equivalent to determine hot spots.

- Check torque value for any connection indicated.

- Check AC pressure connectors.

- Check torque of screws on chassis access covers to insure NEMA4X compatibility.

- Clean the photovoltaic panels every six months, at the change of season or as necessary. The performance of the system depends on the condition of the PV panels. To clean, follow the specifications of the PV panel supplier.;