Problem Cause Comments Recommendations
Continual Discarding solvent-laden filter and still residues Residues may contain as much as 50% by weight or more of recoverable solvent Solvent consumption may be reduced by obtaining a muck cooker
Sudden Liquid leakage Periodic inspection and maintenance is required under Federal NESHAPs. Leakage at pipe connections can generally be detected by the presence of a brown residue on the lower surfaces of the fittings. Maintain solvent temperature at 75° to 80° F.

Check for and repair:

  1. Leaky valves, solenoid valves and couplings
  2. Plugged solvent lines from water separator
  3. Deteriorating door gaskets
  4. Leaky pumps, particularly at packing glands
  5. Leaky delivery or storage drums
Sudden Vapor leakage See Liquid Leakage above

Check for and repair:

  1. Valves impaired by lint or mechanical failure
  2. Clean out doors of still and muck cooker not properly seated
  3. Improper recovery from filter sludge
  4. Improper boildown of still
  5. Failure to inspect and tighten closures in drum or machine storage reservoir
  6. Failure to keep door to button trap closed
  7. Presence of solvent vapor in displaced air
  8. Failure to clean lint screens and fan blades on recovery drying equipment
  9. Failure to keep surfaces of condensers clean
  10. Not regenerating carbon absorber often enough

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