ABB ACS1000i air-cooled, User Manual

Page: 166 / 174

11 PREVENTIVE AND CORRECTIVE MAINTENANCE
3BHS206977 E01 REV H ACS1000I AIR-COOLED USER MANUAL 166/174
11.6.6 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
- Appropriate fastening of cables and wires and connections of cable screens
- Integrity of cable insulation
- Signs for overheated components, wires, cables or busbars
- Corrosion on circuit boards, connectors or busbars
- Correct type of signal and power cables
11.6.7 Cleaning the drive
NOTICE
When cleaning the drive, mind the following:
- To prevent dirt falling into equipment, cover the equipment.
Note: The drive contains components which are sensitive to electrostatic discharge.
Therefore, take electrostatic-sensitive precautions and use suitable tools.
- Clean circuit boards with special care. To prevent the components being damaged, use
antistatic 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.
For information, see the applicable cable specifications.
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.
• Use appropriate and recommended cleansing agents.