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Filters - PowerPoint PPT Presentation


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Filters. List 4 types of contaminants. Water--acid Metal Burrs and chips Dust, sand, pieces of seals and paint rust lint, fibers. Explain the concept of a micron. Measure of the opening hole size of a filter. The size of particle that can pass through the filter

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list 4 types of contaminants
List 4 types of contaminants
  • Water--acid
  • Metal Burrs and chips
  • Dust, sand, pieces of seals and paint rust
  • lint, fibers
explain the concept of a micron
Explain the concept of a micron
  • Measure of the opening hole size of a filter. The size of particle that can pass through the filter
  • Micron 3.95 x 10 to the -5 or .000039 inches or .00004 millionth of an inch
  • 10 mu = 1/10 size of a grain of table salt
  • Particles of 40 to 50 microns are visible
explain the difference in a filter and a strainer
Explain the difference in a filter and a strainer
  • A filter can catch smaller particles than a strainer
three types of filter rating
Three Types of Filter Rating
  • Mean - the average size of pore opening in the filter. Absolute - The size of the largest opening in the filter, removes 100% . Nominal - that is given to the by the manufacturer. Nominal rating - Ex. 10 microns traps most particles (98%) 10 or larger (largest 25um).
surface and depth filters
Surface and Depth Filters.
  • A. Surface
  • B. Depth
      • ab absorbent -- Mechanically remove dirt.
      • ad adsorbent -- Mechanically and Chemically remove dirt. charcoal, chem treated paper, fuller earth) Works to remove oil oxidation, even additives
describe the two most common types of filtration systems
Describe the two most common types of filtration systems
  • Full-flow-- filters entire supply of oil as it circulates in the hydraulic system
  • Bypass-- small portion of oil is diverted through the filter
difference in surface and depth filters
Difference in surface and depth filters
  • Surface-- have a single surface that catches and removes dirt particles
  • Depth-- thicker filtering area
describe features of various types of filters
Describe features of various types of filters
  • Has indicator to tell when to change
  • Sensors to tell if stopped up
  • Disposable vs washable
explain the appropriate procedure for maintaining the filter
Explain the appropriate procedure for maintaining the filter
  • Check filter according to recommendations in the manual
  • replace filter according to recommendations in the manual
  • following manual’s directions
  • check to make sure you are using or installing the right filter