TCI HGA Manual - Manual (Page 47)

47
■ Section 5
Maintenance and Service
HGA Reliability and Service Life
The HGA has been designed and thoroughly tested at the factory to ensure that it will perform reliably
from the time it is put into service. The following periodic maintenance is recommended to ensure that
the HarmonicGuard Active filter will always perform reliably and provide the expected service life.
Periodic Maintenance
The following checks should be conducted monthly or more frequently when installed in harsh or
dusty environments.
• Check to see that the installation environment remains free from excessive vibration, exposure
to excessive dirt, moisture, 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.
• Clean the air filter in units that have filtered air inlets. Clean as often as necessary to prevent
dirt build-up from impeding air flow.
• Check for any dust or dirt build-up on the fans and heat sink fins.
• Check the operation of the cooling fan.
• 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, ground, and control wiring connections.
• All electrical connections must be re-torqued annually.
Warning
Many electronic components located within the filter are sensitive to static electricity. Voltages
imperceptible to human touch can reduce the life, and affect performance, or destroy sensitive
electronic devices. Use proper electrostatic discharge (ESD) procedures when servicing the filter
and its circuit boards.
Warning
Only qualified electricians should carry out all electrical installation and maintenance work on the
HGA.
Disconnect all sources of power to the drive and HGA before working on the equipment. Do not
attempt any work on a powered HGA.
This HGA unit contains high voltages and capacitors. Wait at least five minutes after
disconnecting power from the filter before you attempt to service the conditioner. Check for zero
voltage between all terminals on the capacitors. Also, check for zero voltage between all phases
of the input and output lines. All maintenance and troubleshooting must be done by a qualified
electrician. Failure to follow standard safety procedures may result in death or serious injury.
Unless an external disconnect means has been provided everything ahead of the filter circuit
breaker will still be energized.