Chapter 6 - Preventive Maintenance; Air Filters; Heatsink; Relays - ABB ACA 6 Series Hardware Manual

Air Filters

Heatsink

Relays

Fan

Spare Modules

ACS 600 MultiDrive
Chapter 6 – Preventive Maintenance
WARNING! Before performing any maintenance on the equipment, the
Safety Instructions on the first pages of this manual must be followed.
Negligence of these instructions can cause injury or death.
If installed in an appropriate environment, the ACx 600 requires very
little maintenance.
An annual check-up for dust and corrosion accumulation on the
surfaces inside the cabinet is recommended.
When having filtering for cooling air, check and clean or replace filter
mats if dirty. Wash dirty filter mats with water (60 °C) and detergent.
The ACx 600 can run into overtemperature faults if the heatsink is not
clean. In normal environment, the heatsink should be checked and
cleaned annually.
Use compressed air to remove dust from the heatsink. (The airflow
direction must be from bottom to top.) Also, use a vacuum cleaner at
the air outlet to trap the dust. Fan rotation must be prevented in order
to prevent bearing damage.
Relays should be checked for function and all connections should be
inspected and checked for tightness. Any signs of corrosion, especially
in ground components, shall be cleaned off.
The cooling fan lifespan is approximately 40 000 hours. The actual
lifespan depends on the frequency converter usage and ambient
temperature.
Fan failure can be predicted by increasing noise from fan bearings and
gradual rise in the heatsink temperature in spite of heatsink cleaning. If
the frequency converter is used in a critical part of a process, fan
replacement is recommended once these symptoms appear.
If spare modules are available, it is recommended to replace the
cabinet modules with their spare modules once a year in order to avoid
capacitor reforming and to equalize wear and tear on the modules. See
section Capacitors below.
6-1