ABB ACS2000 AFE 1MVA User Manual page 169

169 ACS2000 AFE 1MVA UM 3BHS297030 ZAB E01 REV. J
10.6.7 Service covers
—
References
—
10-11 Service covers
!
High temperature!
Components inside the drive can be hot.
Before taking off a service cover on the back of the
cabinet, wait until the fan has stopped. To cool
down the components, the fan continuous to run
for a preset time after the main power supply has
been switched off.
The service covers enable rear access to the NP
frame (1), the resistor assembly
nal compartment (3).
10.6.8 Visual checks on the drive
Check the drive and its immediate vicinity visually
at the intervals stated in the maintenance schedule
and pay attention to the following items:
• Humidity inside the drive
• Permitted range of ambient air temperature
and humidity of the drive
• Dust built-up inside the drive room and inside
the drive
• Appropriate fastening of cables and wires and
connections of cable shields and screens
• Integrity of cable insulation
• Signs for overheated components, wires, cables
or busbars
• Corrosion on circuit boards, connectors or bus-
bars
• The outer cable sheath must not be damaged.
• Correct type of signal and power cables
1
2
—
10-11
CAUTION
(2)
For information, see the applicable cable
specifications.
3
10.6.9 Cleaning
NOTICE
Risk of component damage!
• Dust on electrical components and wiring can
cause failure and damage the components.
Dust and moisture can build up in loose
connections and cause loss of low-level signals.
Check the cabinet regularly for signs of dust and
humidity and clean if necessary.
• Alcohol and solvents can damage the
components.
and the termi- Use appropriate and recommended cleansing
agents.
When cleaning the drive cabinet, mind the follow-
ing:
• To prevent dirt falling into equipment, cover the
equipment.
• The drive contains components which are sensi-
tive to electrostatic discharge. Therefore, take
electrostatic-sensitive precautions and use
suitable tools.
• Clean circuit boards with special care. To pre-
vent the components being damaged, use anti-
static brushes and a vacuum cleaner with a soft
nozzle.
• Remove dust on assemblies and busbars inside
the cabinet with a vacuum cleaner and lint-free
cleaning cloths.
• Remove water, oily or greasy deposits on
assemblies, components and busbars with
water- and oil-absorbing microfibers such as
"3M Scotch Brite".
• Use a nylon brush or a vacuum cleaner for
removing dust or deposits from recesses.
• Clean the outside of the cabinet with a vacuum
cleaner and cleaning cloths.