System Manual
12 Routine Maintenance
85
12.1.2
Five Safety Rules
Respect the following five rules during maintenance or service on the MV Station to ensure
the safety of the maintainer.
Disconnect the MV Station from all the external connections and internal power
supplies.
Ensure that the MV Station will not be started accidentally.
Verify that the MV Station interior is discharged completely with a multimeter.
Necessary ground and short circuit connect.
Cover the adjacent electrical components with insulation cloth during operation.
12.2
Maintenance
12.2.1
Introduction
With IP54 protection degree, the MV Station can be installed outdoors. Harsh environment
condition or long-time operation, however, may cause age and damage of the MV Station.
Check and maintain the MV Station periodically and replace the aged components can
effectively enlarge the service life and increase the device performance inside the MV
Station.
Aperiodic maintenance is also required, esp. when the system performance is
poor.
12.2.2
Maintenance Interval
Maintain the MV Station and internal electric devices periodically to ensure the good
performance of the MV Station.
The maintenance interval described in this chapter is indicative only. The actual interval
depends on the on-site environment condition. If the MV Station is located in harsh
environment places, for example desert arrears, the maintenance interval shall be
shortened. Esp. the cleaning of the MV Station outside and anti-corrosion & anti-rust work
should be more frequent.
If the MV Station is located in desert areas, it is advisable to check thoroughly the MV
Station inside and outside and clean completely after the sand storm.
Check the MV Station fans inside the MV Station periodically and the fans on top
of the cabinet for abnormal operation and abnormal noise. If so, there may be
dust penetrating inside the module. Stop the MV Station and clean the dust.
Wait at least 5 minutes after the MV Station discharge completely. Before
cleaning, make sure, with multimeter, the MV Station internal is discharged
completely to avoid electric shock.
Almost all maintenance work needs to remove the internal protective grid during
maintenance. Make sure to reassembly the grid and fasten all the screws after the
maintenance work.
Make sure all bolts are securely fixed.
