Router Maintenance
MP3900X Series Router Installation Manual
6-10
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module will absorb the dust in the around air. When the amount of the dust reaches a
certain degree, the dust will affect the stable running of the fan module and will also be
the pollution source of other service boards on the router. This further brings the
potential danger for the stable running of the router.
To ensure the long-term stable running of the router, the maintenance personnel should
de-dust the fan of the router regularly, once one year recommended. The related steps
are as follows:
⚫
Before operation, please prepare the standby fan module in advance, and install the
standby fan module in time after removing the fan module in the working state of the
device to ensure the normal operation of the device.
Step 1: Dust removal of the standby fan module: after the maintenance personnel correctly wear
anti-static wrist or gloves, clean the fan blades, control circuit board and other parts of
the standby fan module with clean cotton gauze, anti-static brush, vacuum cleaner and
other cleaning tools, and the fan module after dust removal shall be free of dust
attachment.
Step 2: Replace the fan module to be dedusted. Refer to "6.1 Change board card" for specific
operation steps. The replacement process of the whole fan module needs to be timely.
Otherwise, the temperature of the chassis will be too high, which will seriously threaten
the safe and stable operation of the device.
Step 3: The replaced and dedusted fan module will be used as the standby fan module.
6.3.2
De-dust the Board Card
⚫
To reduce the maintenance risks, de-dust the board card of the router in the period
with small traffic volumes.
During the router operation, due to the charged board card and cross ventilation in the
router dissipation, the board card will inevitably absorb and accumulate the charged
particle or dust in the air. When the air cleanliness is weaker and the relative humidity is
lower, this absorption process is stronger. When the dust accumulates to a certain
degree, the heat dissipation rate and electrical insulation performance will be badly
