Replacing The Outlet (Roof) Filters (Ip54, Option +B055); Cleaning The Heatsink; Power Connections And Quick Connectors; Tightening The Power Connections - ABB ACS880-207 Hardware Manual

74 Maintenance

Replacing the outlet (roof) filters (IP54, option +B055)


WARNING! De-energize the fans by switching off the supply unit. Make sure that
no restart is possible during the maintenance work. Rotating fan blades can
cause serious hand injury.
1. Remove the front and back gratings of the fan cubicle by lifting them upwards
2. Remove the air filter mat.
3. Place the new filter mat in the grating.
4. Reinstall the grating in reverse order.

Cleaning the heatsink


The module heatsink fins pick up dust from the cooling air. The drive runs into
overtemperature warnings and faults if the heatsink is not clean. When necessary, clean
the heatsink as follows.
WARNING! Use a vacuum cleaner with an antistatic hose and nozzle, and wear a
grounding wristband. Otherwise an electrostatic charge can build up and damage
the circuit boards.
WARNING! Obey the safety instructions given in Safety instructions for ACS880
multidrive cabinets and modules (3AUA0000102301 [English]). If you ignore
them, injury or death, or damage to the equipment can occur.
1. Stop the drive and do the steps in section
before you start the work.
2. Remove the cooling fans of the inverter module(s). See section
3. Blow dry clean compressed air from bottom to top of the module, simultaneously using
the vacuum cleaner at the air outlet to trap the dust.
4. Refit the cooling fan(s).

Power connections and quick connectors

Tightening the power connections


WARNING! Only qualified electricians are allowed to this work. Read the
complete safety instructions of the drive. Ignoring the instructions can cause
physical injury or death, or damage to the equipment.
1. Disconnect the drive from the AC power line and make sure it is safe to start the work.
See section Electrical safety precautions
2. Check the tightness of the cable connections. Use the tightening torques given in
chapter Technical data.
Electrical safety precautions
on page 42.
(page 42)
Fans on page 75.