AMSCO Century Medium Sterilizers

Designed for fast, efficient sterilization of heat and water-resistant materials the Amsco / Century Medium Steam Sterilizer delivers the same capabilities as a gravity sterilizer.
Equipped with pre-vac, gravity, flash, express, leak test, and daily air removal test cycles. The Amsco / Century Medium provides all essential sterilizing functions.
With three chamber sizes, the Amsco / Century Medium sterilizer provides enough space to fit all of your equipment and sterilize with speed and high quality in mind.

Description

AMSCO Century Medium Sterilizers Features

  • Florescent display for easy reading
  • A paper impact printer
  • Pre-vacuum Steam Sterilizer
  • Fast & efficient
  • Emergency manual exhaust valve
  • Non-lubricated, steam-activated door seal
  • Help screens for programming/troubleshooting alarm conditions
  • Communication interface compatibility w/ most PC devices

Prevacuum

  • Designed for fast, efficient sterilization of heat- and moisture-stable materials.
  • Pre­vacuum configuration sterilizers are equipped with pre-vacuum, gravity, liquid, leak test, and daily air removal (Bowie-Dick) test cycles.

Steam Flush Pressure Pulse (SFPP)

  • Designed for fast, efficient sterilization of heat- and moisture­stable materials.
  • This configuration sterilizer uses the Steam Flush Pressure Pulse cycle, which features an above-atmospheric pressure level conditioning phase.
  • SFPP sterilizers are equipped with SFPP, WRAP/SFPP, pre-vacuum, gravity, liquid, leak test, and daily air removal (Bowie-Dick) test cycles.

Hinged Door

  • With fast operating, low­effort door lock mechanism.
  • Door handle lock lever requires a single 30° handle movement to lock or unlock.

Fast-operating, Low-effort Manual Door Lock Mechanism

  • Hinged-door Models allows the door to be locked or unlocked using a single 30° handle motion.

Century control system with en­hanced functionality and user-friendly interface screen.

  • Touch-sensitive screen with 30-line x 40-character display area.
  • Ink-on-paper impact printer.
  • Help screens for programming and troubleshooting alarm conditions.
  • Automatic check of the control program and cycle data maintains process integrity.
  • The vacuum pump is supplied on all units to effectively pull chamber to specified vacuum levels, as well as reduce water consumption.

26 x 37.5″ Chamber Cross Section

  • Sized to allow for efficient, high-volume processing of sterilization.

Resistive Thermal Detectors (RTD)

  • Installed for sterilizer temperature control.
  • The dual-element chamber drain line RTD senses and controls temperature variations within the sterilizer chamber.
  • A jacket RTD provides temperature control within the jacket space.
  • These RTD signals converted into electrical impulses, provide accurate control inputs and readouts throughout the entire cycle.

Electronic Water Saving Control

  • Includes an RTD to control the amount of water used in condensing the exhausted chamber steam.

Software Calibration

  • Performed in the service mode, accessible through the touch screen displays, and accomplished using external or internal temperature and pressure sources.
  • Control system provides a printed record of all calibration data for verification to current readings.

Automatic Utilities Start-up/Shutdown

  • Permits utility conservation.
  • Shut­down may be programmed to activate at the end of any designated cycle or time of day.
  • When activated, the control system automatically shuts off all utility valves, conserving steam and water usage.
  • Sterilizer utilities can be restarted either by programmed time or manual operation.
  • A different shutdown and restart time can be programmed for each day.

Steam Purge Feature

  • Provided to assist in air removal and to preheat the load.

Two-piece Insulation Sleeve

  • Fitted around the exterior of the sterilizer vessel.
  • The sleeve is sealed and held in place by hook-and-loop closures.
  • Insulation is asbestos-free and chloride-free, silicone impregnated, oil- and water­resistant fiberglass.

Lighted DIN Connectors

  • Installed on all steam, water, and exhaust valves for reliability and ease of maintenance.

AMSCO Century Medium Sterilizers Specifications

Availible Models with Chamber Dimensions

Amsco / Century V136 Steam Sterilizer

Designed for fast, efficient sterilization of heat and water-resistant materials the Amsco / Century V136 Steam Sterilizer delivers the same capabilities as a gravity sterilizer.
Equipped with pre-vac, gravity, flash, express, leak test, and daily air removal test cycles. The V136 provides all essential sterilizing functions.
With a 26 x 37.5x 36″ (660 x 950 x 910 mm) chamber, the V136 sterilizer provides enough space to fit all of your equipment and sterilize with speed and high quality in mind.

Amsco / Century V148 Steam Sterilizer

Designed for fast, efficient sterilization of heat and water-resistant materials the Amsco / Century V148 Steam Sterilizer delivers the same capabilities as a gravity sterilizer.
Equipped with pre-vac, gravity, flash, express, leak test, and daily air removal test cycles. The V148 provides all essential sterilizing functions.
With a 26 x 37.5 x 48″ (660 x 950 x 1220 mm) chamber, the V136 sterilizer provides enough space to fit all of your equipment and sterilize with speed and high quality in mind.

Amsco / Century V160 Steam Sterilizer

Designed for fast, efficient sterilization of heat and water-resistant materials the Amsco / Century V160 Steam Sterilizer delivers the same capabilities as a gravity sterilizer.
Equipped with pre-vac, gravity, flash, express, leak test, and daily air removal test cycles. The V160 provides all essential sterilizing functions.
With a 26 x 37.5 x 60″ (660 x 950 x 1520 mm) chamber, the V160 sterilizer provides enough space to fit all of your equipment and sterilize with speed and high quality in mind.

PROCESSING CYCLES

All processing cycles factory pro­grammed into the sterilizer control have been validated to AAMI ST8.

Prevacuum Configuration Sterilizers

  • Factory programmed with the following cycles:
    • Pre-vacuum (with either 5-minute or 20-minute dry phases)
    • Gravity
    • Liquid
    • Test Cycles

SFPP configuration sterilizers are factory programmed with the following cycles:

  • Pre-vacuum
  • SFPP
  • Wrap/SFPP
  • Gravity
  • Liquid
  • Test Cycles

See cycle descriptions below for more details:

Pre-vacuum configuration sterilizers are factory programmed with the following cycles:

  • Pre-vacuum (with either 5-minute or 20-minute dry phases)
  • Gravity
  • Liquid
  • Test Cycles

Pre-vacuum Cycle:

  • For efficient, high-volume processing of heat- and moisture-stable materials, such as fabrics and wrapped hard goods.
  • This process incorporates a series of pressure/vacuum pulses to condition the load prior to sterilization.
  • Sterilize temperature:
    • 270°F (132°C)
  • Sterilize time:
    • 4 minutes
  • Dry time:
    • 5 minutes or 20 minutes

SFPP Cycle:

  • For efficient, high­volume processing of porous loads.
  • The process incorporates a series of steam flushes and pressure pulses at pressures above atmospheric levels to condition load prior to sterilization.
  • Sterilize Temperature:
    • 270°F (132°C)
  • Sterilize Time:
    • 4 minutes
  • Dry Time:
    • 20 minutes

Wrap/SFPP Cycle:

  • For efficient, high-volume processing of heat­and moisture-stable materials, such as double-wrapped instrument trays.
  • This process incorporates a series of steam flushes and pressure pulses at pressures above atmospheric levels to condition load prior to sterilization.
  • Sterilize Temperature:
    • 270°F (132°C)
  • Sterilize Time:
    • 4 minutes
  • Dry Time:
    • 20 minutes

Gravity Cycles:

250°F Gravity Cycle:

  • For sterilizing fabrics.
  • Sterilize temperature:
    • 250°F (121°C)
  • Sterilize time:
    • 30 minutes
  • Dry time:
    • 15 minutes
  • NOTE: A Gravity Cycle, adjusted to 270°F for 25-minute sterilize expo­sure time, can be used for process­ing fabric packs.

270°F Gravity Cycle:

  • For sterilizing hard goods.
  • Sterilize temperature:
    • 270°F ( 132°C)
  • Sterilize time:
    • 15 minutes
  • Dry time:
    • 30 minutes
  • NOTE: 270°F temperature must be set by the user.

Liquid Cycle:

  • This cycle is used for sterilizing liquids in borosili­cate containers with vented closures.
  • Sterilize temperature:
      250°F (121°C)
  • Factory Programmed Sterilize Time:
    • 45 minutes
  • Dry time:
    • Not Applicable
  • IMPORTANT: It is inappropriate for a healthcare facility to sterilize liquids for direct contact with patients.

Testing Cycles

Vacuum Leak Test:

  • This cycle is used for testing the vacuum integrity of the sterilizer’s piping.
  • Sterilizer chamber must be empty while running this test cycle.
  • Prepro­grammed cycle parameters cannot be adjusted by the user.

DART (Bowie-Dick) Test Cycle:

  • This cycle is used to conduct a Bowie-Dick test on the sterilizer.
  • The recommended load is a STERIS Dart® pack, or a properly prepared Bowie-Dick test pack.
  • Prepro­grammed cycle parameters cannot be adjusted by the user.
  • Sterilize temperature:
    • 270°F (132°C)
  • Sterilize time:
    • 3.5 minutes
  • Dry time:
    • 1 minute

CONTROL SYSTEM

Design Features

  • The century control system monitors and controls all sterilizer operations and functions.
  • The control system is factory-programmed with standard sterilizing cycles.
  • All operator-acces­sible control functions can be changed using the touch screen control.
  • IMPORTANT: If factory-programmed cycle values are changed, it is the responsibility of the healthcare facility to validate the efficacy of the changing cycle.
  • Cycle values and operating features may be adjusted and verified prior to cycle operation.
  • Cycle parameters are retained in control memory for re­peated use.
  • Once the cycle is started, cycles and cycle values cannot be changed until the cycle is complete.
  • If the chamber tem­perature drops below-set point during the exposure phase, the timer is set to stop and automatically reset once normal operating temperature is reached.
  • Critical control system components are housed within a sealed compart­ment to protect the components from moisture and heat generated during the sterilization process.
  • A cooling fan with filter is installed in the housing compartment to maintain positive pressure within the compartment, keeping components cool and dust­ free.

Operator Interface Control Panel

  • Consisting of a touch screen and impact printer which are located on the operating (i.e., load or non-sterile) end of the sterilizer.
  • If sterilizer is equipped with double doors, an additional touch screen is provided on the sterilizer’s non-operating (i.e., unload or sterile) end.
  • Touch-sensitive Screen:
    • Features a 30-line x 40-character graphics display.
    • All sterilizer functions, including cycle initiation and cycle configuration, are operated by pressing the touch-sensitive areas on the display, referred to as “touchpads”.
    • The display indicates appropriate control buttons, operator prompts, and status messages necessary to assist in sterilizer operation.
    • All displayed messages are complete phrases with no codes to be cross­referenced.
    • The display also indicates any abnormal conditions that may exist either in or out of a cycle.
  • Ink-on-paper Impact Printer:
    • Located above touch screen, provides an easy-to-read printed record of all pertinent cycle data on 2 ¼” wide paper.
    • Data is automatically printed at the beginning and end of each cycle and at transition points during the cycle.
    • Printer take-up spool stores an entire roll of paper, providing cycle records which can be saved for future refer­ence.
    • Three paper tape rolls and two printer ribbons are furnished with each unit.

Non-Operating End (NOE) Control Panel

  • Equipped on double-door sterilizers only, includes a touch­sensitive screen similar to the operat­ing end screen.
  • Preprogrammed cycles can be started from the NOE control panel.
  • Display concurrently shows the same information as the operating end screen display.

Cycle Configuration

Performed by accessing the change values menu through the operating end touch screen.

In addition to the adjustment of cycle values, the following operating parameters can also be changed through the change values menu:

  • Time Display and Printout Units
    • AM/PM or 24-hour notation.
  • Access Code
    • Requires the entry of a four-digit access code to operate the sterilizer and/or change the cycle values.
    • Operating the sterilizer or accessing Change Values menu causes the display to request the entry of an access code.
    • If an access code is not properly entered, the display returns to the standby or main menu screen, denying user access to the sterilizer or programming.
  • Audible Signals
    • Adjustable.
    • TouchPad and end-of-cycle signals can be adjusted to one of four sound levels (off, low, medium, or high) as required for the operating environment.
    • The alarm signal can be adjusted to low, medium, or high (it cannot be turned off).
  • Print Format
    • Allows selection of either a full or condensed printout of the cycle information during processing.
  • Temperature Display and Printout Units
    • Fahrenheit (°F) or Celsius (°C).
    • Temperature is set, displayed, controlled, and printed to the nearest 1 °.
    • Recalibration is not required when changing temperature units.
  • Pressure Vacuum Display and Printout Units
    • psig/ln Hg or bar.
    • Recalibration is not required when changing pressure units.

Technical Data

  • Control system consists of microcom­puter control boards and peripheral function circuit boards, located within the control PC board housing.
  • An Internal Battery backs up all cycle memory for up to 10 years.
  • If a power failure occurs during a cycle, the battery backup system assures that cycle memory will be retained and proper cycle completion will occur once power is restored.
  • When power is lost, the cycle is held in phase until power is restored, exceeding the minimum government specification of 1 minute.
  • Once power returns, the event is recorded on the printout and the cycle automatically resumes or restarts, depending on what phase the cycle was in at the time of power loss.
  • If necessary, the operator can manu­ally abort the cycle.

SAFETY FEATURES

Control Lockout Switch

  • Equipped on the chamber door, senses when the door seal is energized and tight against the door.
  • Control prevents the cycle from starting until the limit switch signal is received.
  • If control loses appropriate signal during a cycle, the alarm activates, cycle aborts and chamber safely vents with a controlled exhaust.

Chamber Float Switch

  • Activates an alarm, aborts cycle, and safely vents chamber with a controlled exhaust if excessive condensate is detected in the vessel chamber.

Pressure Relief Valve

  • Limits the amount of pressure buildup so that the rated pressure in the vessel is not exceeded.

Power Door Safety Feature

  • Causes door drive to slip if the sliding door encounters an obstruction during its movement.

CONSTRUCTION

Shell Assembly

  • Two fabricated Type 316L stainless­steel shells welded one within the other, form the sterilizer vessel.
  • Type 316L stainless-steel end frame(s) is welded to door end.
  • On single door units, back of the chamber is fitted with welded, 316L stainless steel dished head.
  • Sterilizer vessel is ASME rated at 45 psig (3.1 bar) and insulated.
  • Vessel includes one 1 “-NPT chamber port for customer use.
  • Steam-supply opening inside the chamber is shielded by a stainless­steel baffle.

Chamber Door(s)

  • The Door is constructed of Type 316L stainless steel.
  • During cycle operation;
    • The door is sealed by a steam-activated door seal.
    • The door seal is constructed of a special long­life rubber compound.
    • When the sterilize cycle is complete, the seal retracts under vacuum into a machined groove in the sterilizer’s end frame.
  • A Long-life Proximity Switch:
    • Used by the control to determine if door is closed or locking plates are engaged.
    • An additional seal pressure switch prevents inadvertent cycle initiation if the door is not sealed.
  • The Door Assembly
    • Equipped with a mechanical locking mechanism that ensures the door cannot be opened as long as the seal is intact and energized and more than 2 psi (0.14 bar) pres­sure is in the chamber.
  • The Sterilizer Door:
    • Fitted with a stainless-steel panel that insulates the operator from the chamber end frame, reducing the chance of accidental contact with a hot metal surface.

Chamber Drain System

  • The drain system is designed to prevent sterilizer effluent from entering into the water-supply system and sterilizer.
  • The automatic condensing system, consist­ing of a stainless-steel plate-type condenser, converts chamber steam to condensate and disposes of condensate to waste.
  • Cooling water flow is regu­lated by the waste line RTD to minimize water usage.
  • Water supply shut off valve is located in the recessed area of the unit.

Vacuum System

  • Vacuum pump reduces chamber pressure during the pre-vacuum and post­drying phases.
  • Air is drawn from the chamber through the vacuum system.
  • Following the dry phase, the chamber vacuum is relieved to atmospheric pressure by admitting air through a bacteria­retentive filter.

Steam Source

  • Sterilizers are piped, valved, and trapped to receive building-supplied steam delivered at 50 to 80 psig (3.5 to 5.6 bar) dynamic.
  • The steam piping is constructed of brass and includes a shut-off valve, steam strainer, and a pressure regulator.

Piping

  • All piping connections terminate within the confines of the sterilizer and are accessible from the front and left side of the sterilizer.
  • Solenoid Valves
    • With DIN connec­tors simplify sterilizer piping and can be serviced individually.
  • Manual Shut-off Valves
    • Pres­sure rated at 125 psig (8.62 bar) for saturated steam. Valve handles are low-heat conducting.

MOUNTING ARRANGEMENT

  • Sterilizers are arranged for either freestanding or recessed installation, as specified.
  • Each sterilizer is height­adjustable.
  • Sterilizer subframe is equipped with a synthetic rubber gasket to support a tight fit between the cabinet panels on freestanding units or between the front cabinet panel and wall partition on recessed units.
  • On freestanding units, stainless-steel side panels and a louvered top panel enclose the sterilizer body and piping.

ACCESSORY

  • Seismic Tie-down Kit
    • Conforms to Title 24 California Code of Regulations, 1993 Amendment Section 2336(B).
  • Material Handling Accessories
    • Include stainless-steel chamber tracks and stainless-steel loading cars with painted-steel carriages.
    • Stainless-steel chamber rack and shelf are available for 36″ (914 mm) sterilizers.

NOTES

  1. The sterilizer is not supplied with a vacuum breaker or backflow prevention device and, where required by local codes, installation of such a device in the water line is by others.
  2. Pipe sizes shown indicate terminal outlets only. Building service lines, provided by others, must supply the specified pressures and flow rates.
  3. Disconnect switches (with OFF position lockout only; by others) should be installed in electric supply lines near the equipment.
  4. Access to the recessing area from the control end of the sterilizer is recommended.
  5. Clearances shown are minimal for installing and servicing the equip­ment.
  6. Depending on the loading equip­ment used, additional clearance is required:
    1. If shelves are used, length of sterilizer plus 24″ (610 mm) at each door.
    2. If loading car and carriage will be used, twice the length of sterilizer at each door.
  7. Floor drain should be provided within confines of sterilizer frame­work.
  8. Units require minimum 38″ (966 mm) door opening for transport within the facility prior to installation.

UTILITY REQUIREMENTS

  • Steam (S)
    • 1″ NPT, 50 to 80 psig (3.5 to 5.6 bar) dynamic, 97 percent to 100 percent vapor quality.
  • Drain (D)
    • 2″ ODT drain terminal (Floor drain capacity must handle peak water consumption).
  • Electrical – Controls (EC)
    • 120 Volt, 50/60 Hz, 1-phase, 2.0 A.
  • Electrical – Vacuum Pump (VP)
    • 208/240 Volt, 50/60 Hz, 3-phase, 6 A per phase.
    • 480 Volt, 50/60 Hz, 3-phase, 3 A per phase.
  • Sterilizer Feed Water (FW)
    • 1″ NPT, 20 to 50 psig (2.1 to 3.5 bar) dynamic.
  • Water is used for vacuum pump, heat exchanger, and trap cooling.
  • NOTE: Back-flow prevention is by others; not supplied on the unit.
  • The customer is responsible for CHECKING LOCAL CODES.