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MSD Manual
6.0 Maintenance and Service
Reliability and Service Life
The MotorShield
the variable frequency drive. It has been thoroughly tested at the factory to ensure that it will
perform reliably from the moment it is put into service. The following periodic maintenance is
recommended to ensure that the MotorShield
expected service life.
Periodic Maintenance
Only qualified electricians should carry out all electrical installation and maintenance
Warning
work on the MotorShield™.
Disconnect all sources of power to the VFD and MotorShield™ before working on the
equipment. Do not attempt any work on a powered MotorShield™.
Check to see that the installation environment remains free from exposure to excessive dirt and
•
contaminants. Refer to the Pre-installation Planning section of this manual.
Check to make sure that the enclosure ventilation openings are clean and unobstructed.
•
Inspect the interior of the enclosure for signs of overheated components. Clean the interior of the
•
enclosure whenever excess dirt has accumulated.
Check the integrity of all power and ground connections.
•
All electrical connections must be re-torqued annually.
•
has been designed to provide a service life that equals or exceeds the life of
™
18
6.0 Maintenance and Service
will always perform reliably and provide the
™
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