AMSCO Eagle Series Medium Sterilizers (24x36x36/48/60)
The AMSCO 3000 Series Medium Sterilizers feature an advanced microcomputer control system, providing the latest standard for cycle setup, selection and monitoring. Once settings are made and the cycle started, microcomputers accurately monitor and control system operations. The control column includes an easy-to-read vacuum fluorescent display and an integral thermal printer.
AMSCO Eagle Series Medium Sterilizers Features
AMSCO Eagle Series Medium Sterilizers can be used in a hospital or laboratory.
They offer a choice of two configurations;
For sterilizing liquids, in flasks with vented closures, at 212˚ to 254˚F (100˚ to 122˚C), and also heat and moisture stable goods at 212˚ to 280˚F (100˚ to 138˚C).
For efficient, high-volume processing of heat-and moisture-stable materials, such as fabrics, wrapped hard goods, glassware or animal bedding at 270˚ to 280˚F (132˚ – 138˚C) through prevacuum cycle. Prevacuum also provides gravity-type cycles.
Gravity units operate by the gravity downward displacement air removal principle. Vacamatic sterilizers have a mechanical air evacuation system for high-speed, high-volume sterilization. Both types use steam-under-pressure as the sterilizing agent. Sterilizers are furnished ready for connection to the building steam supply.
AMSCO Eagle Series Medium Sterilizers Specifications
- 24 x 36 x 36
- 24 x 36 x 48
- 24 x 36 x 60
- 24 x 24 x 36
- 24 x 36 x 48
- 24 x 36 x 60
The Control System
- Stage 2™ Control
- Microcomputers monitor and control system operations and functions.
- Cycle progress automatically through conditioning, sterilizing, exhaust (fast or, for liquids, adjustable-slow with accelerator) and drying phases.
- Control indicates cycle completion visually and also audibly for 90 seconds.
- At the end of a cycle, timers reset to the previously selected values, eliminating the need to reset values between repeated cycles.
- Timers also reset if sterilizer temperature drops 2° F (1.1 °C) below setpoint during the exposure phase.
- Control features programmed sterilize-temperature parameters that prevent inadvertent selection of cycles with improper sterilize-temperature settings.
- If an invalid sterilize-temperature is selected, a cycle cannot be started and a reference message is furnished.
- A vertical column, mounted on side opposite door hinge, houses the controls.
- Side-mounting makes controls easy to access and it removes them from exposure to the continuous heat, vapor, and condensate resulting from the sterilization process.
Salient Features Include:
1. Hinged Door at the Top of the Control Column Provides access to:
- Power Switch
- Controls power to the sterilizer and sterilizer control.
- Printer Function Switch
- Controls Two Printer Functions:
- Duplicate Print
- Pressing top of printer switch generates a complete duplicate printout of either the last completed cycle (when the unit is not in a cycle) or the current cycle phase and conditions (when the unit is in a cycle).
- The first line of duplicate printout always indicates DUPLICATE PRINT.
- Print Values
- Pressing bottom of printer switch generates a printout of all currently set cycles and cycle values.
2. Control Panel with Display Window and Two Rows of Touchpads.
- 2-line x 20-character vacuum fluorescent display.
- It shows sterilizer status, line (time of day, sterilize time and dry time), temperature, pressure, warnings, and instructional messages.
- The display also indicates any abnormal conditions that may exist either when in the READY mode or when a cycle is in progress.
- All messages are complete readouts with no codes to be cross-referenced.
- Accessed by raising or lowering a sliding door, preventing inadvertent cycle starts or changes.
- Assign cycles and cycle values to the four Numerical Cycle Selector touch pads.
- Any combination of available cycles, along with Sterilize Time and Temperature, Dry Time, Chamber Flush Time, and Too Long in Step Alarm Time values for each cycle can be selected using Change Values touchpads.
- Gravity sterilizers have three types of cycles available; FLASH, GRAVITY, and LIQUIDS.
- Vacamatic units have five types of cycles: FLASH, GRAVITY, LIQUIDS, PRE-VAC, and EXPRESS.
- Cycles and cycle values are locked in and cannot be changed once the cycle is started.
Numerical Cycle Selector Touchpads
- Start cycles (1, 2, 3, 4) previously assigned by VALUES touch pads.
- The operator must press pad twice to initiate a cycle, minimizing chances of incorrect cycle selection.
- The cycle does not start unless the chamber door is locked pressure tight.
- The display shows the selected cycle and sterilizer conditions immediately when the cycle begins.
- ResetTouchpad resets control in case the incorrect cycle is started.
Vacamatic Sterilizer Control
- Provides operator initiated automatic Vacuum Test and DART Bowie Dick Test Cycles.
- Vacuum Test checks the integrity of the piping system.
- DART (Bowie-Dick) Test assures that cycles meet air removal requirements for porous load processing.
- All sterilizers provide a service technician initiated Field Self Test mode for expedited troubleshooting in thee event of a malfunction.
3. Service-Selectable Features/Functions Control
System allows selection of additional features by modifying dip-switch settings (changes to be performed by a trained service technician).
Printer Output and Display Window Information
- Allows selection of displays and printouts in English, French or Spanish ( using standard English characters).
Automatic Utilities Control
- When activated, control system automatically shuts off utilities at set SHUTDOWN time and turns them back on at set RESTART time.
- Settings are made using VALUES touchpads.
- If a cycle is in progress when the SHUTDOWN time is reached, utilities will not be shut off until the cycle is complete.
- (Requires optional, Utilities Control Valve Kit.)
Access Code for Setting Cycles and Cycle Values
- Requires entry of a four-digit access code in order to change cycles and cycle values.
- Pressing the CHANGE VALUE touchpad causes the display to request entry of access code.
- If access code is not property entered, display advances to the first cycle (and related cycle values) not requiring an access code.
- As few as zero and as many as four cycles may be set for access coding.
Automatic Duplicate Print
- Causes a duplicate print out of cycle data to be furnished automatically at the end of each cycle.
- This copy may be torn off and placed with sterilizer load.
- If sterilizer is not set for Automatic Duplicate Print and one is desired, a duplicate print out can be obtained by pressing the top of Printer Function Switch.
- Allows adjustment of cycle-status print out intervals in increments of one-minute (factory setting is every minute for Flash cycles and every five minutes for other cycles).
Cycle Complete Intermittent Buzzer
- Shuts off end of cycle reminder if not required.
- All abnormal condition warning buzzer signals still function when cycle complete buzzer is shut off.
Temperature Display and Printouts Units
- Allows selection of either Degrees F or Degrees C.
- Temperature is set to the nearest degree, however, temperature control display and printout are to the nearest 0.1 degrees.
Pressure Vacuum Display and Printout Units
- Allows selection of either psig/inHg or bars (an absolute measurement for scientific use).
Time Display and Printout Units
- Permits selection of either Standard AM/PM or Military.
Under-temperature Recovery Restart or Resume
- Allows selection of either restarting or resuming sterilize time in case of an under-temperature condition.
- Resume time selection is only for use in a laboratory.
Mode of Operation
Permits selection of either Hospital or Laboratory mode.
- The following values (service-adjustable when in Hospital mode) are set by the operator using the Values Touch Pads:
- Sterilize Temperature Overdrive
- Over-temperature Point
- Under-temperature Point
- Chamber Pressure Points
- Vacuum Points and Number of Vacuum Pulses
- Vacamatic sterilizers only for Prevac and Express cycles.
Two 8-bit Parallel Microcomputers
- The microcomputers hold programed Instructions with factory-set default values.
- Control system consists of two connected PC Boards (Control and Printer), located in control housing behind the control column front panel.
- Screw mounting and swing-down pivoting of control housing allow for quick installation or removal of PC Boards.
Internal Battery Back-Up
- Backs up all cycle memory for up to ten years.
- If there is a power failure during a cycle, the Eagle battery back-up system ensures that proper cycle completion can still occur and (2) cycle memory will be retained.
- When power is lost, the cycle is held in phase until power is restored, thus exceeding the minimum government specification of one minute.
- Once power returns, the event is recorded on the printout and the cycle resumes or restarts, depending on what phase the cycle was in at the time of power loss.
- Even if the RAM battery should fail, factory default values will be preserved in the control’s main EPROM chip.
Control Board Circuits
- Monitor sterilizer functions and include an A/D converter, a watchdog timer to protect AC output, and an on-board power supply circuit.
- Quartz crystals maintain precision timing.
- A thermistor senses temperature and a strain-gauge type pressure transducer senses pressure.
- These signals converted into electrical impulses, provide accurate control inputs and readouts throughout the entire cycle.
- Individual temperature and pressure channel potentiometers for zero and span calibrations are furnished.
- Temperature and/or pressure-sensor failure sounds an alarm and a message is printed.
- Contains a 24-column digital alphanumeric printer which produces characters within a five-by-seven dot matrix on 2 1/4″ wide single-ply thermal paper.
- Printer is controlled by a dedicated microcomputer.
- Print speed is approximately 48 lines per minute.
- Paper tape exits from an opening flush with the surface of the control panel and it is taken up automatically by an idler spool mounted above the main printer assembly.
- An entire roll of paper can be stored on the take-up spool.
- Data is automatically printed at the beginning and end of each cycle and at all transit on points.
- Five paper tape rolls are furnished with each unit.
- Sterilizer operates on 120 V AC, 50/60Hz, single-phase electrical power service.
- The internal power supply provides regulated voltage levels for display printer, take-up motor analog circuits and digital circuits solenoid valves operate on 120 VAC.
Manual Control (Gravity and Liquid Cycles Only)
- Sterilizer may be operated manually without electric power using a single programming wheel.
- Automatic controls are overridden in this mode.
- Manual control allows cycling of any or all phases in Gravity or Liquids cycles, including condition, sterilize, slow exhaust, fast exhaust and dry.
- This option can be used for emergencies during power outages or for diagnostics by service technicians.
- (Automatic control is not functional in this mode.)
- Hi/Lo pressure regulator permits adjustment of correct corresponding pressure and regulation of steam to jacket and chamber.
Jacket and Chamber Assembly
- Monel door frames to support and conceal ends of the door holding arms when doors are locked, presenting a smooth surface for door gasket contact.
- Hot-rolled carbon-steel shells, welded one, within the other, form the sterilizer steam jacket.
- The inside of the chamber shell is nickel dad, 0.025-inch (0.63 mm) thick (nominal).
- A chamber test penetration (plugged) is provided.
- Glass-fiber blanket insulation on the outside of chamber assembly is 1 inch (25 mm) thick (nominal) and is double-faced with aluminum foil.
- It is held in place by pressure-sensitive tape, aluminum straps, and dips.
- Sterilizer jacket is painted prior to being insulated.
- Steam-supply opening inside the chamber is shielded by a baffle.
- The door is nickel clad (0.025-inch [0.63 mm] thick, nominal), hot-rolled, carbon steel.
- Door ls manually operated or power drive as specified.
- Its stainless-steel, bearing mounted hinges will be on side of chamber specified.
- Hinges are adjustable for accurate gasket alignment.
- Radial arms, actuated by rotating a low-heat conducting handwheel, exert even pressure on the silicone-rubber sealing gasket.
Stainless-steel Sound Deadening Cover
- Conceals holding arms and exterior panels.
- Micro-switches prevent inadvertent start of a cycle before doors are locked.
- Pressure lock(s) keep door(s) from being opened during the cycle.
- Door(s) may be tightened but not opened while pressure is in the chamber.
- Radial arms are actuated by a low-heat conducting handwheel.
- Radial arms are positioned by a socket plate assembly that is operated by a motorized mechanism.
- The mechanism is fused and equipment with a magnetic slip dutch for overload protection.
- Door automatically stops if an obstruction is encountered.
- Power door is also manually operable.
Vacuum System (Vacamatic Sterilizers Only)
- A series of microcomputer-controlled and monitored vacuum/pressure pulses effectively condition loads of various size and density reducing total sterilization time.
- Factory setting consists of three pressure pulses and four evacuations.
- Evacuation system includes a condenser and water ejector.
- Following the exposure phase, the chamber is exhausted and evacuation continues throughout the drying phase.
- At the conclusion of the drying phase, filtered air relieves the vacuum.
- The air filter is bacteria retentive.
Chamber Drain System
- The drain system is designed to prevent pollutants from entering into the water supply system and sterilizer.
- Steam condensate system with water saver converts steam to condensate and disposes of condensate to waste.
- Water flow is regulated consistent with the amount of steam discharged.
- Water supply shut off valve is behind the service access door.
- A constant steam bleed across a temperature-sensing element (thermistor) in the chamber line provides improved air elimination and more accurate temperature sensing.
Drying System (Gravity Sterilizers Only)
- System ejector reduces chamber pressure during the drying phase and draws air into the chamber through a bacteria retentive filter.
- This filtered air entrains and conducts odors and vapors from chamber to drain.
- Steam to ejector is microcomputer controlled.
- Sterilizers are piped, valved and trapped to receive steam delivered at 50 to 80 psig (3.52 to 5.62 kg/cm2).
- Sterilizer service lines terminate at fittings for connection to building Service lines. Sterilizer steam supply line includes a strainer, shutoff, and internal pressure regulator.
- Jacket condensate line includes a strainer, trap, and check valve.
- Shutoff valve, jacket pressure, and chamber pressure/vacuum gauges are mounted in the valve panel, behind the upper access door.
- Scales are graduated in both English and metric.
The following are furnished to obtain a complete working unit, ready for (but not including) connection to the building utility service lines.
- Simplify sterilizer piping.
- Valves are placed where needed and can be serviced individually.
- Bronze, angle type with renewable monel seats and synthetic discs or equivalent high-quality parts.
- They are hydrostatically tested at 350psig (24.61 kg/cm2) or proven leak-proof when tested at 100 psig (7.03 kg/ cm2) air pressure with valve body submerged in water.
- Valve handles are low-heat-conducting and easily replaceable.
Steam Pressure Regulator
- Operates on supply pressure of 50 to 80 psig (3.52 to 5.62 kg/ cm2).
- The secondary pressure is adjustable and controlled by a phosphor-bronze, spring-loaded bellows.
- Adjustable stops are factory set for sterilizer operation al either 253″ or 273” F (122″ or 134° C).
- Traps are pressure and temperature compensated and have renewable Monel bellows with matched stainless-steel plunger and seat.
- Piping and Electrical Connections terminate within the confines of the sterilizer.
- The piping used to support other components is rigid brass.
Optional Material Handling Accessories
- Accessories available include racks with shelves, instrument trays and Loading cars.
- Constructed of monel; with carriages of stainless-steel.
- Sterilizers are arranged for mounting as either cabinet enclosed or recessed, as specified Each sterilizer is equipped with height-adjustable, steel floor stand with cadmium plated pads and leveling screws.
- Sterilizer sub-frame has a synthetic-rubber gasket to ensure a tight fit of cabinet panels to each other (freestanding units), or front panel to wall partition (recessed units).
- Stainless-steel front panel has a service access door and height-adjustable kick plate.
- On freestanding units, stainless-steel side panels and a louvered top panel enclose the sterilizer body and piping.
- Casters and lifting lugs facilitate transporting and positioning the sterilizer.
- A Seismic Tie-down Kit is available for seismic installation of all medium Eagle Series sterilizers if required.
1. COLD WATER
- 3/4” NPT, 80° F (20° C) maximum.
- Recommended total hardness should be 3-8 grains.
- Specific resistance not to exceed 26,000 ohms/cm.
- (Conductivity of not less than 38.5 micromhos)
- pH maintained between 6.8 to 7.5.
- Total dissolved solids should not exceed 500 ppm
- Alkalinity (bicarbonate only) should not exceed 250 ppm as calcium carbonate.
- Gravity – 20 to 50 psig (1.41 to 3.52 kg/cm2) dynamic.
- Vacamatic – 30 to 50 psig (2.11 to 3.52 kg/cm2) dynamic.
- 2″ ODT drain terminal.
- (Floor drain capacity must handle peak water consumption.)
3. TERMINAL BOX
- 120 Volt, 50/60 Hz, 1 amp electric service to sterilizer controls. 15 amp service required for power door units.
4. STEAM SUPPLY
- 3/4″ NPT, 50 to 80 psig (3.52-5.62 kg/ cm2) dynamic. Condensate free, 97 to 100% saturated vapor.
Customer is responsible to make sure they are compliant with their local codes.
- Building service lines, provided by others, must supply the specified pressures and flow rates.
- Disconnect switches (with OFF position lockout; by others) should be installed in electric supply lines near the equipment.
- Access to the recessed area from the control end of the sterilizer is recommended.
- Clearances indicated are minimal for installing and servicing the equipment.
- Clearances at each end of the sterilizer, for loading purposes, should equal:
- Length of sterilizer plus 12 inches (305 mm), if shelves will be used.
- Twice the length of the sterilizer, if loading car and carriage will be used.
- Floor drain should be provided within confines of sterilizer framework.
Every sterilizer meets applicable requirements of the following listings and standards, and carries the appropriate symbols:
- Federal Specification G GS,.1340A performance requirements for high-temperature processing (Gravity Units).
- Federal Specification GG-S-1343A performance requirements for high-temperature processing (Vacamatic Units).
- Seismic Stress Calculations-Title24 (Division T-17 of Part 6) of the California Administrative Code.
- Electronic Testing Laboratories, Inc. (ETL) and Canadian Standards Association (CSA) listings.
- ASME Code, Section VIII, Division 1 for unfired pressure vessels.
- The pressure vessel is so stamped;
- ASME Form U1 is furnished.
- Shell and door are constructed to withstand a working pressure of 40 psig (2.Bl kg/cm2).
- ASTM Specification A240 for stainless steel, alloy 304 if welded, alloy 201,202 or 304 if not welded.
- ASTM Specification B88 for seamless, copper tubing.
- ASTM Specification B43 or B135, alloy1 or seamless, red brass tubing.