Danfoss VLT AutomationDrive FC 302, Operating Manual, Page: 82 / 158

9 Maintenance, Diagnostics, and Troubleshooting
This chapter includes:
•
Maintenance and service guidelines.
•
Status messages.
•
Warnings and alarms.
•
Basic troubleshooting.
9.1 Maintenance and Service
Under normal operating conditions and load profiles, the
drive is maintenance-free throughout its designed lifetime.
To prevent breakdown, danger, and damage, examine the
drive at regular intervals depending on the operating
conditions. Replace worn or damaged parts with original
spare parts or standard parts. For service and support, refer
to
www.danfoss.com/en/contact-us/contacts-list/?filter=type
%3Adanfoss-sales-service-center%2Csegments%3ADDS .
WARNING
UNINTENDED START
When the drive is connected to AC mains, DC supply, or
load sharing, the motor can start at any time.
Unintended start during programming, service, or repair
work can result in death, serious injury, or property
damage. The motor can start with an external switch, a
fieldbus command, an input reference signal from the
LCP or LOP, via remote operation using MCT 10 Set-up
Software, or after a cleared fault condition.
To prevent unintended motor start:
•
Press [Off/Reset] on the LCP before
programming parameters.
•
Disconnect the drive from the mains.
•
Completely wire and assemble the drive, motor,
and any driven equipment before connecting
the drive to AC mains, DC supply, or load
sharing.
9.2 Heat Sink Access Panel
9.2.1 Removing the Heat Sink Access Panel
The drive can be ordered with an optional access panel in
the back of the unit. This panel provides access to the heat
sink and allows the heat sink to be cleaned of any dust
buildup.
130BD430.10
Illustration 9.1 Heat Sink Access Panel
NOTICE
DAMAGE TO HEAT SINK
Using fasteners that are longer than those originally
supplied with the heat sink panel can damage the heat
sink cooling fins.
1. Remove power from the drive and wait 20
minutes for the capacitors to discharge
completely. Refer to
chapter 2 Safety .
2. Position the drive so that the back of the drive is
accessible.
3. Remove the screws (3 mm [0.12 in] internal hex)
connecting the access panel to the back of the
enclosure. There are 5 or 9 screws depending on
the size of the drive.
4. Inspect the heat sink for damage or dust buildup.
5. Remove dust and debris with a vacuum.
6. Replace the panel and secure it to the back of
the enclosure with the screws previously
removed. Tighten the fasteners according to
chapter 10.8 Fastener Tightening Torques .
Maintenance, Diagnostics, a... VLT® AutomationDrive FC 302
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