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switch. However, for better convenience, it is recommended to power down the
switch before installing the cards, if no module in the switch is running.)
Step 2: Ensure proper grounding of the switch
Step 3: Put on an ESD wrist strap before contact with the switch circuit, and make sure
the ESD wrist strap is connected securely to the ESD connector in the switch’s
front panel.
Step 4: Loosen the panel fasteners locking back plate counterclockwise and remove the
back plate.
Step 5: Insert the optional module into the slot, you can use the metal handle on the front
plate of the module to ensure good contact. Then lock the module with panel
fasteners in the front plate.
2.3.3.2 Removing and installing the Dust Gauze
Dust gauze is provided in the right section of the ES4700BD, which can be installed
and removed from the back of the switch. The dust gauze is meant to prevent large debris
or particles in the air from being ingested into the switch. Please perform cleaning on a
regular basis according to the site conditions.
z
Loosen the 2 panel fasteners in the dust gauze
z
Draw the dust gauze out smoothly by holding the 2 screws
z
Clean the dust gauze with a brush (never wash with any liquid)
z
Insert the gauze back to its original position in the switch
z
Tighten the panel fasteners.
Note: The dust gauze is installed on switch chassis shipment.
The installation and removal of the dust gauze is shown below:
Fig 2-5
Installation and removal of the ES4704BD dust gauze