STERIS - Amsco 400 Series (Small)

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The Steris Amsco 400 series offers a small steam sterilizer in both 16 and 20-inch models. The Amsco 400 Series was designed for steam sterilizing medical equipment. The 400 series offers cycles such as; pre-vacuum, gravity, leak test, and daily air removal. The interior chamber of the sterilizer can accommodate up to three 25lb sets (or 75 lb) per cycle load.

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7 months ago
Failed dart and leak test. “too long in evacuation”

Hey, so I have a Steris AMSCO 400 small sterilizer that is not finishing its dart or leak test. The dart warmup goes fine reaching 29.2P, but then when I do the dart test, max it reaches 8.3P. The test runs until there’s 8:59 left then the time stops, then after a while it gives me “too long in evacuation”. The water pressure is good coming to the unit. What should be my next steps in troubleshooting?

SERVICE COMPANIESView All Sterilizers/Autoclaves Companies


  • Touch-screen with 30-line x 40-character display area.
  • Ink-on-paper impact printer.
  • Help screens for programming and troubleshooting alarm conditions.
  • An automatic check of the control program and cycle data maintains process integrity.
  • Service reprogrammable flash ROM memory.
  • Available with an optional water-saving electric vacuum pump.
  • Sliding door that allows for hands-free operation.
  • Foot pedal activated door opening and closing.
  • Non-lubricated, steam-activated door seal.

Additional Specifications

16 Inch Model Interior Chamber Dimensions

  • Height: 16 in (406 mm)
  • Width: 16 in (406 mm)
  • Depth: 26 in (660 mm)
  • 108.79 liters

16 Inch Max. Outside Dimensions

  • Height: 74.5 in (1891 mm)
  • Length: 36.875 in (937 mm)
  • Width: 26 in (660 mm)

20 Inch Model Interior Chamber Dimensions

  • Height: 20 in (508 mm)
  • Width: 20 in (504 mm)
  • Depth: 38 in (965 mm)
  • 249.03 liters

20 Inch Max. Outside Dimensions

  • 74.5 in (1891 mm)
  • Length: 45.625 in (1159 mm)
  • Width: 30 in (762 mm)

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