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Fan Filter Maintenance
The E7-2 fan module includes an air filter for use in indoor/office environments. The filter
resides on the left side of the FTA, and on the right side of the FTA2.
The air filter is made of closed-cell fiber composite material and can be washed and replaced.
Calix recommends conducting a visual inspection of the filter every three months. When the
filter becomes visibly clogged with dust or dirt, the filter must be cleaned.
Note: Do not leave a powered E7-2 operating for more than a few minutes without a fan
module installed, to avoid overheating the system.
To clean the air filter
1. Remove the fan module from the E7-2 housing as follows:
a. Firmly grasp the fan module latch and slide it to the left, and then pull forward to
unseat the module.
b. Pull the fan module forward to remove it from the E7-2 chassis.
2. Remove the air filter from the fan module (located on the left side of the FTA or on the
right side of the FTA2).
Note: FTA2 is shown below.
3. Clean the filter as follows:
a. Using compressed air, spray the filter to remove loose dust particles from the surface.
b. Thoroughly wash the filter in soapy water, removing any trapped dust/dirt particles.
Rinse the filter with water.
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