Cause Comments Recommendations
Hole in screen, bag or tube The result of corrosion and/or wear

Repair or replace
Bag not properly seated Check for foreign particle obstruction, loose connections and worn seat Inspect and resolve accordingly
Screens cracked along edge when sealed Sealed too tight, causing excess stress Repair or replace as needed
Insufficient precoat Permits carbon to pass through filter element Add precoat to filter as recommended by manufacturer
Excess water in solvent Moisture-laden filter additives will mass or clump together on the filter element, allowing dry powder to pass through Determine source of moisture. Run loads of predried cottons or wools through cleaning cycle or distill total solvent inventory. Remove affected filter powder and recoat.
Cartridge not seated Check for foreign particle obstruction, loose connections or worn seat Inspect and resolve accordingly
Defective cartridge Faulty fabrication Replace cartridge
Slippery tubes Generally occurs after cleaning tubes Apply twice the recommended quantity of precoat and exclude the use of carbon When sightglass clears, backwash and apply recommended quantity of precoat

Pump cavitation due to air leaks or low solvent level

 Cavitation of air bubbles within the filter will create bare areas on the filter element Check for air leaks in lines leading to filter and maintain recommended solvent level in base tank
Failure to purge air from under the filter tube sheet plates. Plugged purge valves. Creates an air space in the upper portion of the filter Check and resolve accordingly

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