Maintenance 167
Supply and inverter modules
Cleaning the module
The module heatsink fins pick up dust from the cooling air. Modules run into
overtemperature warnings and faults if the heatsink is not clean. In a “normal” environment
(neither especially dusty nor clean), the heatsink should be checked annually, in a dusty
environment more often.
WARNING! Only qualified electricians are allowed to do the work described
below. Read the complete safety instructions given in Safety instructions for
ACS880 multidrive cabinets and modules (3AUA0000102301 [English]) before
you service the drive. Ignoring the instructions can cause physical injury or death, or
damage to the equipment.
WARNING! Wear protective gloves and long sleeves! Some parts have sharp
edges.
1. Stop the drive and disconnect it from the AC power line. Obey the instructions in
section Electrical safety precautions on page 128.
2. Remove the cooling fan of the supply module as described under Fans elsewhere in
this chapter.
3. Blow clean and dry compressed air through the module from bottom to top,
simultaneously using a vacuum cleaner at the air outlet to trap the dust. Note: Prevent
the dust from entering adjoining equipment.
4. Refit the cooling fan.
Replacing the supply module (frame D7T)
WARNING! Only qualified electricians are allowed to do the work described
below. Read the complete safety instructions given in Safety instructions for
ACS880 multidrive cabinets and modules (3AUA0000102301 [English]) before
you service the drive. Ignoring the instructions can cause physical injury or death, or
damage to the equipment.
WARNING! Ignoring the following instructions can cause physical injury or death,
or damage to the equipment:
• The modules are heavy and have a high center of gravity. They topple over easily if
handled carelessly.
• Wear protective gloves and long sleeves! Some parts have sharp edges.
• Do not tilt the module. Do not leave the module unattended on a sloping floor.
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