ABB PVS-120 Hardware Manual page 59

Task
Use a vacuum cleaner to clean the floor, doors
and interior beams.
Use a pressurized air to clean the general dust in
the MV transformer surface and locations with
excessive dust.
Use pressurized air to clean locations with excess-
ive dust, including busbar connections.
Clean the surface of the MV transformer with a
duster or compressed air.
Clean the insulators of the MV transformer
Clean the air filters by blowing compressed air
from the inside to the outside through the filter
until the dust comes off.
Loosen and remove the screws on the filter frame.
Remove the plastic clips and then, remove the
grid.
Clean the grill interior with a vacuum cleaner.
Install the filter support frames and tighten the
screws.
Turn OFF/OPEN the circuit breaker for fan.
Disconnect the supply and signal cabling.
Use compressed air to clean the fans.
Use a vacuum cleaner to clean the floor, doors
and interior.
Use a vacuum cleaner to clean the floor, doors
and interior metal beams.
Additional information
See MV transformer manual.
Cleaning the air filters
Cleaning the fans
Prevent the circuit breaker from turning on acci-
dentally.
Measure to make sure that it is not energized.
Cleaning the free area
If necessary, use a duster or pressurized air to
clean locations you cannot reach with the vacuum
cleaner.
Cleaning the MV switchgear area
If necessary, use a duster or pressurized air to
clean locations you cannot reach with the vacuum
cleaner.
Maintenance 59