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|Air Preparation Filters
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The element service indicator, which is mountable on the filter body, can be ordered separately for maintenance.
The order number is as follows: INA-63-280 (with gasket and mounting screws).
For AFF/AM □-□T filters which were not initially ordered with an element service indicator (option “T”), the element service indicator cannot be retrofitted.
For early stage second-generation models AFF2B to 75B and AM□150 to 850 as well as later stage second-generation models AFF2C to 22C and AM□150C to 550C, a replacement element service indicator can be ordered with the same part number (INA-63-280).