8.3 Performing Standard Fan Filter Maintenance
In a standard HDV configuration, the side of the housing includes a 4.7 inch (120 mm) fan that draws in ambient air through a filter and maintains a slightly positive pressure inside the housing. While the system is running, the air that comes in contact with the electronics has passed through this filter. Inspect the fan filter for cleanliness at least monthly. Fan filters and the fan itself are user- replaceable items. The filters and fan are available from electronics distributors and in computer stores. When purchasing a new fan, ensure that the voltage is 24V, as marked on the previous fan.
To inspect the fan filter, refer to the following figure and perform the following steps:
1. Pry off the fan bezel with a flat-blade screwdriver and remove the filter, which is held by the bezel.
2. Inspect the fan filter. If the filter is dirty, it can be washed in hot water or be replaced.
3. To reinstall the filter, reseat it in the bezel and press the bezel back in place.
Figure 22. Fan with Bezel Cover
Figure 23. Replacing the Fan Filter
Made with FlippingBook - professional solution for displaying marketing and sales documents online