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7.2 Inspection and replacement of wear
parts
7.2.1 Cooling fan
Inverters are equipped with cooling fans. The service
life of the cooling fan is about 15000 hours. If the fan
generates abnormal noise or produces vibrations,
replace it immediately. The cooling fan starts
automatically when the internal temperature of the
inverter exceeds 55 °C (131 °F) and stops when the
internal temperature of the inverter falls below 45 °C
(113 °F).
7.3 Storage and warranty
7.3.1 Storage
If the product is stored for a long time after
purchasing, make sure to comply with the following
requirements:
1. Avoid placing the inverter in high-temperature or
humid areas or areas with vibration and metal
dust. Ensure proper ventilation.
2. The performance of the capacitor inside the
inverter can be reduced if the equipment is not
used for a long period of time. It is necessary to
start up the equipment every two years to restore
the performance of the capacitor and inspect the
inverter function at the same time. The voltage
must be increased gradually through a DC power
supply with power-on time being no less than 5
hours.
7.3.2 Warranty
The warranty is not valid in the following cases:
•
Faults caused by failure to comply with this
manual or standard specifications.
•
Faults caused by unauthorised repairs and
modifications.
•
Faults caused by inadequate storage and
maintenance.
•
Faults caused by inappropriate use.
•
Damage caused by fire, salt corrosion, gas
corrosion, earthquake, storm, flooding, lightning,
abnormal voltage or other force majeure
situations.
8. Disposing of the product
This product or parts of it must be disposed of in an
environmentally sound way.
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
See also end-of-life information at
www.grundfos.com/product-recycling.
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