Huawei DPU40D-N06A3 - Maintenance; Preventive Maintenance

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
5 Maintenance
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
30
5 Maintenance
5.1 Preventive Maintenance

Maintenance personnel should be trained and qualified for the work.

There is a risk of corrosion in heavily salted areas (within 500 m away from the
seashore). Periodical preventive inspection and maintenance are required to reduce the
risk. The recommended maintenance interval is 8 months in these areas and 12 months in
other areas.
5.1.1 Exterior
Table 5-1 Device exterior maintenance
No.
Item
Possible Fault
Cause
Suggestion
1
Check whether the
device coating
flakes off or is
scratched.
Scratches occur
during movement, or
the cabinet is
manually damaged.
Repaint and repair
the exterior.
2
Check whether rust
or corrosion exists.
Scratches occur
during movement, or
the cabinet is
manually damaged.
Repaint and repair
the exterior.
3
Check whether the
device enclosure is
distorted or
damaged.
Scratches occur
during movement, or
the cabinet is
manually damaged.
Replace the device.
During paint repair, polish any rusty or corroded area with sandpaper and then apply antirust aluminum
spray paint. If there is no rust or corrosion, directly apply the antirust aluminum spray paint.