Harmonic Electra9200, Руководство по установке

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Chapter 5 Maintenance and Troubleshooting Air Filter
© 2015 Harmonic Inc. All rights reserved. 39 Electra 9200, Rev O
To replace the bezel:
1. Replace the bezel by inserting the plastic catch at the back of the left side of the bezel
into the slot in the metal frame, as shown in step 1,
Figure 5–2 .
Figure 5–2: Replacing the Bezel
2. Ease the right side of the bezel onto the unit, as shown in step 2,
Figure 5–2
.
3. Push the front of the bezel flush with the fan tray to secure the clip that holds the bezel to
the fan tray, as shown in step 3,
Figure 5–2 .
4. Locate the lever on the front of the bezel and push to the right to snap the bezel into
place, as shown in step 4,
Figure 5–2
.
Air Filter
The encoder uses an air filter to minimize dust and dirt in the circuitry and components in the
chassis. The filter is made of flexible, open cell polyurethane foam, which is specially coated
to provide flame and fungus resistance. It is enclosed in a sheet metal frame that slides from
the top of the unit and is located directly in front of the air vents in the fan cage at the front of
the encoder. The filter is fire retardant and conforms to UL 900 Class 2 and UL 94 HF-1
specifications.
Maintaining the Air Filter
The operating environment of the encoder plays a large factor in determining the life of the
air filter. Encoders that operate in dusty and dirty surroundings require more frequent
inspections and filter cleaning than those operating in cleaner environments.
Inspect and clean the filter with a frequency that is appropriate to the environment in which
the encoder operates. Harmonic recommends inspecting and cleaning the filter every six
weeks to ensure proper airflow through the chassis.
To clean dust and dirt from the filters, you can use a vacuum cleaner to remove the dust. If a
filter is not cleanable, replacement filters may be ordered from Harmonic.
1
2
Back S
ide of Bezel Det
ail
POWER
TX
FA
IL
LOCAL
Front Side of Bezel
Detail
4
3
Back Side of
Bezel
(RN-09)