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6 Routine Maintenance
Due to ambient temperature, relative humidity, windblown dust and vibrations,
components of PVS will get aging. It is necessary to do the routine maintenance
work periodically on the device.
Only qualified electricians can do the maintenance work described in
this chapter.
After the maintenance work finished, be sure not to leave screws,
washers and the like in the PVS. The device can be damaged
！
Only work on the PVS when it is switched off and voltage free.
6.1 Replace the Fuse
Once the fuse is blown, the damage is irrecoverable. Replace the fuse
by qualified operators in time.
Replace the fuse with new one with the same model and the same
grade.
Open the fuse cover
Close the fuse cover
Insert new fuse
Tighten the fuse cover after replacing the fuse.
