Section 6.0 Filter Operation
HGA IOM
49
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
Section 4
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 fans.
•
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 HGA and connected equipment before working on
the equipment. Do not attempt any work on a powered HGA.
This HGA unit contains high voltages 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.