INTEC | 1206 |
SECTION 4
Filter Element Servicing (cont.)
c)Rinse the element with low pressure water from a garden hose. Always flush from the inside to the outside to avoid driving particles further into the filter media.
d)After rinsing, gently shake off the excess water and set filter aside. Allow the element to dry naturally. It is permissible to set in direct sunlight for drying.
DO NOT use Compressed Air
DO NOT use Open Flame
DO NOT use Hair Dryers or Heat Guns
4.3.1Inspection - Severe Conditions
In severe environments, it may be necessary to clean and inspect the element more frequently than recommended in Section 3. An element used in such conditions should be replaced after not more than 1000 hours of operation. Regardless of the actual time in service, the physical condition of the element must remain the most important factor to determine the serviceability of the element.
At each cleaning carefully inspect the elements as follows:
a)Inspect the fine mesh on the forward surface of the element pleats. Complete erosion of more than .50 in. is cause for element rejection.
b)Inspect the course mesh on the aft surface of the element. Any evidence of mesh wire wear or general signs of mesh deterioration are cause for element rejection.
c)After cleaning and before reoiling, hold the element up to a light and check for holes in the element material greater than .020( it is normal to observe pinholes in the filter media particularly at the pleat folds. These pinholes will not allow the passage of dirt once the element is oiled). Close the holes if present using a fine pick to reposition the media material to cover the hole.
d)Check the condition of the element assembly:
-Frames for security
-Seal strips for deterioration and evidence of gaps between the element and duct flange
-Fasteners for security, loose rivets, or worn pins.
-Wash nozzle, tube and valve assembly for security. Repair any defects as required.
When operating in the most severe conditions it is highly recommended that a serviceable set of pre oiled elements are available. This will allow continued service while the previously installed set is being cleaned, inspected and reoiled.
REVISION: B – 05/12/03 | 9 of 10 |
