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Amsco Century Operator's Manual

Medium steam sterilizer 26" x 37.5"
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OPERATOR MANUAL
Amsco
®
Century
TM
Medium Steam Sterilizer 26" x 37.5"
(04/27/11)
P129373-496
Rev. 1Rev. 0

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  • Page 1 OPERATOR MANUAL Amsco ® Century Medium Steam Sterilizer 26" x 37.5" (04/27/11) P129373-496 Rev. 1Rev. 0...
  • Page 2 These instructions are important to protect the health and safety of personnel operating an Amsco Century Medium Steam Sterilizer and should be retained in a conveniently accessible area for quick reference. This sterilizer is specifically designed to process goods using only the cycles as specified in this manual.
  • Page 3 The Amsco Century Medium Steam Sterilizer is equipped with the following default cycles and cycle values (see Section 7 for detailed cycle parameters and instructions for modifying cycle parameters). CYCLES RECOMMENDED STERILIZE STERILIZE DRY TIME LOADS TEMP. TIME PREVACUUM Heat and moisture-stabile 132°C...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS Section Description Page 1 Listing of Warnings and Cautions ..........1-1 2 Installation Verification..............2-1 2.1 Installation Checklist ................2-1 2.1.1 Service Clearance ..............2-1 2.1.2 Plumbing Services ..............2-1 2.1.3 Electrical Service ................ 2-2 2.1.4 Sterilizer Final Check ..............2-2 2.1.5 Cycle Operation .................
  • Page 5 T T T T T able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) Section Description Page 5 Control Interface ................5-1 5.1 General ....................5-1 5.2 Cycle Select Menus ................5-2 5.2.1 Processing Cycles ..............
  • Page 6 T T T T T able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) Section Description Page 10 Out of Cycle Options ..............10-1 10.1 General ..................10-1 10.2 Status Print ..................10-2 10.3 Duplicate Print ................
  • Page 7 T T T T T able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) Section Description Page 11 Routine Maintenance ..............11-1 11.1 Preventive Maintenance Schedule ..........11-1 11.1.1 Clean Chamber Drain Strainer ..........11-3 11.1.2 Clean Chamber ..............
  • Page 8 T T T T T able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) able of Contents (continued) Section Description Page 12.4 Sensor Alarms ................12-16 12.4.1 Water In Chamber ..............12-16 12.4.2 Too Long In Jacket Charge ..........12-16 12.4.3 Too Long To Seal Door ............

  • Page 9: Listing Of Warnings And Cautions

    LISTING OF WARNINGS AND CAUTIONS The following is a listing of the safety precautions which must be observed when operating this equipment. WARNINGS indicate the potential for danger to personnel, and CAUTIONS indicate the potential for damage to equipment. These precautions are repeated (in whole or in part), where applicable, throughout the manual.
  • Page 10 Proper testing of the safety valve requires the valve to be operated under pressure. Exhaust from the safety valve is hot and can cause burns. Proper safety attire (gloves, eye protection, insulated overall) as designated by OSHA is required. Testing is to be performed by qualified service personnel only. WARNING –...
  • Page 11 CAUTION – POSSIBLE EQUIPMENT DAMAGE: Gasket must be fully retracted prior to operating sterilizer door. If 0 dry time is selected, sterilizer automatically initiates a vapor removal phase in place of drying. This phase can still draw a vacuum to 5 inHg (0.17 Vbar). Consult device manufacturer’s recommendations to ensure devices being processed can withstand this depth of vacuum.

  • Page 12: Installation Verification

    INSTALLATION VERIFICATION An Equipment Drawing showing all utility and space requirements was sup- plied with the sterilizer. Clearance space shown on the drawing is necessary for ease of installation and to assure proper operation and maintenance of equipment. Uncrating and Installation Instructions were also furnished with the sterilizer.

  • Page 13: Electrical Service

    ❑ Electric single-phase service to the unit must be as specified on the Equipment 2.1.3 Electrical Service Drawing and on the Machine Data Plate. ❑ Electric single-phase service requires a clearly marked disconnect with lockout/ tagout capability located near the sterilizer. ❑...

  • Page 14: Technical Specifications

    2.2 Technical Specifications • 36" Sterilizer: Hinged Door — 44" W x 51 " L x 75 " H 2.2.1 Overall Size (1118mm W x 1308mm L x 1911 mm H) Sliding Door — 70" W x 57" L x 75 "...

  • Page 15: Environmental Conditions

    • Steam: Pressure: 50 to 80 psig (3.5 to 5.2 bar) Consumption: 36" Sterilizer: 190 lb/hr (86 kg/hr) 48" Sterilizer: 255 lb/hr (116 kg/hr) 60" Sterilizer: 335 lb/hr (152 kg/hr) 2.2.4 Environmental Temperature: 50° to 90°F (10° to 32°C) Conditions Humidity: 10 percent to 90 percent noncondensing Pollution Degree: 2 Installation Category (Overvoltage Category): II...

  • Page 16: Techniques Of Sterilization

    TECHNIQUES OF STERILIZATION The information in this section is intended as a general guide to steam sterilization techniques. STERIS also recommends reference to the standards of Association for the Advancement of Medical Instrumentation (AAMI). Prior to sterilization, all materials and articles must be thoroughly cleaned. After sterilization, most goods should be stored for no longer than 30 days, depending on wrapping materials.

  • Page 17: Gravity Cycle

    3.2.2 Gravity Cycle Refer to Table 3-2 for the type of items which can be processed in a Gravity cycle and the recommended cycle parameters. Table 3-2. Gravity Cycle Parameters Minimum Minimum Recommended Recommended Items Sterilize Time Sterilize Time Dry Time at 121°C (250°F) at 132°C (270°F) Hard goods (wrapped in 30 minutes...

  • Page 18: Recommendations For Sterilizing Liquids

    IMPORTANT: Please read the following paragraphs before sterilizing any 3.3 Recommendations liquids in your sterilizer. It is inappropriate for a healthcare facility to sterilize liquids for direct patient contact. for Sterilizing Liquids Borosilicate glass is required because it is a superior glass capable of resisting thermal shock.

  • Page 19: Recommendations For Enhancing The Sterilization Process

    Saturated steam is a well-controlled, reliable method for processing items 3.4 Recommendations which can withstand the temperatures and pressures associated with steam sterilization. The requirements for achieving reproducible results are well for Enhancing the known by many users, but are not always understood by all users. Sterilization Process The condition most likely to result in sterilization problems is a failure to remove all of the air from the items being processed.

  • Page 20: Control Measures For Verifying Sterilization Process

    As part of the operator's verification of the sterilization process, 3.5 Control biological indicators may be used to demonstrate that sterilization conditions have been met. Measures for NOTE: Contact your STERIS representative for information on specific Verifying biological indicators recommended for use with this sterilizer. Sterilization Process A live spore test utilizing B.

  • Page 21: Dart (Bowie-Dick) Test

    Conduct a residual air test (e.g., Bowie-Dick test) at the beginning of each day 3.6 Dart (Bowie-Dick) according to the AAMI standard ST-46. STERIS can provide a product called DART (Daily Air Removal Test) designed to be as sensitive as the standard Test AAMI Bowie-Dick test pack in detecting air leaks.

  • Page 22: Component Identification

    Door Lock Control Lever Door Pull Handle Hinged Door Lower Service Access Lower Service Access Panel (for Chamber Panel (for Chamber Evacuation) Evacuation) Horizontal-sliding Door Sterilizer Hinged-Door Sterilizer (Cabinet Configuration Shown) Figure 4-1. Century Medium Sterilizer Component Identification Operating Instructions 129373-496...

  • Page 23: Main Power Disconnect Switch

    NOTE: Valves and discon- nect switch enclosed within cabinet, or behind wall enclo- sure (depending on configu- ration). Water Supply Valve Chamber Exhaust Valve (seal exhaust valve not shown) Figure 4-2. Century Medium Sterilizer Controls 129373-496 Operating Instructions Component Identification...

  • Page 24: Control Panel

    The Control Panel, located on load end of the sterilizer, is used to direct all 4.3 Control Panel sterilizer functions (see Figure 4-3). The operator may control cycle operation, program cycles and sterilizer operating parameters, and monitor cycle performance from the control panel. Cycle Printout Printer...

  • Page 25: Printer

    4.3.2 Printer Ink-on-paper printer records all cycle data on 2-1/4" (57 mm) wide paper. The generated printout is visible when the printer access door is closed (see Figure 4-4). All printer functions are controlled using the touch screen. For details on each of the printer functions, refer to S 5, C Operating...

  • Page 26: Unload End Control Panel (Double Door Units)

    On sterilizers equipped with double doors, an additional control panel is also 4.4 Unload End provided on the sterilizer's unload end. The unload end control panel features a touch screen similar to the one at the load end of the sterilizer (see Control Panel (Double Figure 4-7).

  • Page 27: Hinged-Door Operation

    1. Unlock door by moving door lock control lever away from control column 4.5 Hinged-Door (refer to Figure 4-8). Operation 2. Grasp door pull handle and swing door open. Door Lock Control Lever Century Move Lever Control RIGHT to Unlock Panel Move Lever LEFT to Lock Door Pull Handle Figure 4-8.

  • Page 28: Horizontal-Sliding Door Operation

    Press door control touch screen pads (OPEN DOOR or CLOSE DOOR) to 4.6 Horizontal-sliding operate the horizontal-sliding door. Door Operation IMPORTANT: Keep chamber door closed when the sterilizer is not in use. WARNING – PERSONAL IN- JURY HAZARD: When clos- ing the chamber door, keep S T E R I S S C I E N T I F I C...

  • Page 29: Emergency Door Opening Procedure

    This procedure should only be used when pressure remains in the sterilizer 4.7 Emergency Door chamber, and the door cannot be opened normally because the sterilizer has lost either electrical or water utilities. This emergency door opening procedure Opening Procedure can be used to retrieve a load in the chamber.

  • Page 30: Control Interface

    STERILIZER ID: VACO1 ***************************** * STERIS SCIENTIFIC * AMSCO CENTURY SERIES Pressing the HEXAWAVE puts sterilizer in the Operating mode, advances * MEDIUM STEAM STERILIZER * display to screen #1 and generates a printed record of the sterilizer type (see MADE IN U.S.A.

  • Page 31: Cycle Select Menus

    Screen #1 is the main menu screen. Customer name also appears on this screen. S T E R I S S C I E N T I F I C STERILIZER PREPARED FOR: STERIS SCIENTIFIC CUSTOMER ** Not For Patient Use ** MAIN MENU CYCLE OPTIONS...
  • Page 32 Pressing a cycle button advances display to a screen listing the correspond- ing cycle parameters. For example: If PREVAC button on screen #2 is pressed, the cycle parameters screen #4 appears. Screen lists the cycle parameters programmed for the selected prevac cycle. Similar cycle parameters screens appear after press- ing GRAVITY button and LIQUID button.

  • Page 33: Test Cycles

    5.2.2 Test Cycles After pressing CYCLE SELECT on screen #1, screen #2 appears. CYCLE SELECT PREVAC PREVAC Pressing MAIN MENU returns display to GRAVITY GRAVITY screen #1. LIQUID LIQUID TEST MAIN MENU CYCLES Pressing TEST CYCLES advances display to screen #3, the second Cycle Select menu.

  • Page 34: Out-Of-Cycle Options Menus

    All other sterilizer functions, including cycle programming and printer opera- 5.3 Out-of-cycle tion, are accessed through the Out-of-cycle Options menu screens (#13 and #87). S 10, O , describes each function accessible ECTION CYCLE PTIONS Options Menus from these menu screens. After pressing OPTIONS on screen #1, screen #13 appears showing six out- of-cycle functions.
  • Page 35 After pressing NEXT on screen #13, screen #87 appears showing the remaining out-of-cycle functions. OUT OF CYCLE OPTIONS SUPER- STANDBY Pressing PREVIOUS returns display to VISORY screen #13. Pressing MAIN MENU returns display to DISPLAY SERVICE screen #1. SENSORS MODE MAIN PREVIOUS MENU...

  • Page 36: Sterilizer Operation

    STERILIZER OPERATION The following steps must be performed prior to daily sterilizer usage. 6.1 Before 1. Open chamber door and check that drain strainer is clean and in place. Operating Sterilizer 2. Check that chamber interior is clean and close chamber door. Refer to 11, R , later in this manual, if cleaning is necessary.
  • Page 37 5. Close printer access door and press the on screen 0. Steam enters HEXAWAVE the sterilizer jacket and heats jacket to 115°C (239°F). Printer records sterilizer type. S T E R I S S C I E N T I F I C PREPARED FOR: STERIS SCIENTIFIC...

  • Page 38: Loading/Unloading Sterilizer: Rack And Shelves

    If sterilizer is equipped with the rack and shelves option, refer to instructions 6.2 Loading/ below and Figure 6-2. Unloading Sterilizer: 1. Open chamber door. Rack and Shelves 2. Transfer load to shelves in chamber. Shelves slide out halfway to facilitate loading.

  • Page 39: Loading Car Instructions: Loading

    1. Open sterilizer door. 6.2.1 Loading Car 2. Verify that loading car is securely fastened to the transfer carriage. Instructions: 3. Align the front end of the transfer carriage with the end of the sterilizer. (See Loading Figure 6-3). 4. Move carriage forward until latches engage with mating holes in chamber end frame.

  • Page 40: Loading Car Instructions: Unloading

    1. Open chamber door. 6.2.2 Loading Car 2. Move transfer carriage forward until latches engage with track inside Instructions: chamber. Unloading 3. Verify that transfer carriage is latched to chamber end ring by pulling transfer carriage backward (transfer carriage should remain stationary). 4.
  • Page 41 4. Verify cycle parameters listed for the selected Prevacuum cycle are acceptable. If listed cycle parameters are not acceptable, press PREVIOUS button and refer to S 8, P , for instructions on changing ECTION ROGRAMMING YCLE ALUES cycle parameters. CYCLE PARAMETERS 1.
  • Page 42 • Activate Seal – Door seal fills with steam and expands against the sterilizer door opening, forming an airtight seal. PREVAC CYCLE PHASE: ACTIVATE SEAL DOOR IS WAITING TO BE SEALED Pressing ABORT advances display to screen #11. Refer to "Aborting Cycles," CHAMBER: 32.0 C 00.0 psig...
  • Page 43 • Vacuum Pulse Exhaust – Chamber is exhausted to 4 psig (0.28 bar). NOTE: The sterilizer can be programmed to pull up to 99 pulses during the Prevacuum cycle. Refer to S 8, P ECTION ROGRAMMING YCLE ALUES PREVAC CYCLE PHASE: VACUUM PULSE #1 Pressing ABORT advances display to...
  • Page 44 • Charge – After the last prevacuum pulse, chamber charges with steam to the programmed sterilize temperature. PREVAC CYCLE PHASE: CHARGE Pressing ABORT advances display to CHARGING TO: 132.0 C screen #11. Refer to "Aborting Cycles," CHAMBER: 55.0 C 15.0 inHg later in this section.
  • Page 45 • Vacuum Dry – A vacuum is drawn in the chamber to the programmed vacuum dry point. PREVAC CYCLE PHASE: VACUUM DRY Pressing ABORT advances display to EVACUATING TO: 10.0 inHg screen #11. Refer to "Aborting Cycles," CHAMBER: 83.5 C 2.0 psig later in this section.
  • Page 46 • Retract Seal – Steam is exhausted from the door seal. PREVAC CYCLE Pressing ABORT advances display to PHASE: RETRACT SEAL screen #11. Refer to "Aborting Cycles," DOOR WAITING TO BE UNSEALED later in this section. CHAMBER: 32.0 C 00.0 psig Pressing STATUS PRINT generates a printout of the current sterilizer chamber PROJECTED CYCLE COMPLETION TIME:...

  • Page 47: Gravity Cycle Operation

    The Gravity cycle is designed for sterilizing heat- and moisture-stable goods 6.4 Gravity Cycle at 100° to 137°C (212° to 279°F). Operation 1. Before running this cycle, refer to S 6.1, B ECTIONS EFORE PERATING TERILIZER 6.2, L OADING NLOADING TERILIZER 2.
  • Page 48 5. To begin Gravity cycle operation, press START CYCLE. NOTE: If START CYCLE is pressed while the chamber door is open, a display screen will appear directing the operator to close door before continuing cycle operation. Operator must reselect the cycle after door is closed.
  • Page 49 • Activate Seal – Door seal fills with steam and expands against the sterilizer door opening, forming an airtight seal. GRAVITY CYCLE Pressing ABORT advances display to screen #11. Refer to "Aborting Cycles," PHASE: ACTIVATE SEAL later in this section. DOOR IS WAITING TO BE SEALED Pressing STATUS PRINT generates a CHAMBER:...
  • Page 50 • Charge – Chamber charges with steam to the programmed sterilize temperature. GRAVITY CYCLE PHASE: CHARGE Pressing ABORT advances display to CHARGING TO: 132.0 C screen #11. Refer to "Aborting Cycles," CHAMBER: 32.0 C 00.0 psig later in this section. Pressing STATUS PRINT generates a PROJECTED CYCLE COMPLETION TIME: printout of the current sterilizer chamber...
  • Page 51 • Vacuum Dry – A vacuum is drawn in the chamber to the programmed vacuum dry point. GRAVITY CYCLE PHASE: VACUUM DRY EVACUATING TO: 10.00 inHg Pressing ABORT advances display to CHAMBER: 83.5 C psig screen #11. Refer to "Aborting Cycles," later in this section.
  • Page 52 • Retract Seal – Steam is exhausted from the door seal. GRAVITY CYCLE PHASE: RETRACT SEAL Pressing ABORT advances display to DOOR WAITING TO BE UNSEALED screen #11. Refer to "Aborting Cycles," CHAMBER: 32.0 C 00.0 psig later in this section. Pressing STATUS PRINT generates a PROJECTED CYCLE COMPLETION TIME: printout of the current sterilizer chamber...

  • Page 53: Liquid Cycle Operation

    The Liquid cycle is designed for sterilizing liquids and media in vented 6.5 Liquid Cycle borosilicate glass or metal containers from 100° to 123°C (212° to 254°F). Operation 1. Before running this cycle, refer to S 6.1, B ECTIONS EFORE PERATING TERILIZER 6.2, L...
  • Page 54 5. To begin Liquid cycle operation, press START CYCLE. NOTE: If START CYCLE is pressed while the chamber door is open, a display screen will appear directing the operator to close door before continuing cycle operation. Operator must reselect the cycle after door is closed.
  • Page 55 • Activate Seal – Door seal fills with steam and expands against the sterilizer door opening, forming an airtight seal. LIQUID CYCLE PHASE: ACTIVATE SEAL Pressing ABORT advances display to DOOR IS WAITING TO BE SEALED screen #11. Refer to "Aborting Cycles," later in this section.
  • Page 56 • Charge – Chamber charges with steam to the programmed sterilize temperature. LIQUID CYCLE PHASE: CHARGE Pressing ABORT advances display to CHARGING TO: 121.0 C screen #11. Refer to "Aborting Cycles," later in this section. CHAMBER: 110.0 C 10.0 psig Pressing STATUS PRINT generates a PROJECTED CYCLE COMPLETION TIME: printout of the current sterilizer chamber...
  • Page 57 • Slow Evacuate – A vacuum is slowly drawn in the chamber to 5.0 inHg. This phase ensures that the chamber is cooled to 95°C (203°F). LIQUID CYCLE PHASE: SLOW EVACUATE Pressing ABORT advances display to EVACUATING TO: 5.0 inHg screen #11.

  • Page 58: Leak Test Cycle Operation

    7. Once cycle is complete, open chamber door and unload sterilizer. Display WARNING – BURN HAZARD: returns to the main menu (screen #1). Sterilizer, rack/shelves, and loading car will be hot after cycle is run. Always wear pro- tective gloves and apron (also a face shield, if processing liq- uids) when removing a pro- cessed load.
  • Page 59 NOTE: If sterilizer is equipped with double doors, the interlock type for Leak Test cycle is factory set and fixed at Type #1. Refer to S 8 for description of ECTION interlock types. 2. Press CYCLE SELECT on screen #1. S T E R I S S C I E N T I F I C STERILIZER PREPARED FOR:...
  • Page 60 NOTE: If LEAK TEST is pressed while the chamber door is open, a display screen will appear directing the operator to close door before continuing cycle operation. Operator must reselect LEAK TEST after the door is closed. NOTE: If a cycle is started when the sterilizer has not been fully calibrated, a display screen will appear indicating that the control is not calibrated.

  • Page 61: Dart Warm-Up Cycle Operation

    • Complete – The complete tone sounds and the cycle summary and end- of-cycle messages are printed. Display returns to the main menu (screen #1). 6. Once the sterilizer completes and passes the Leak Test cycle, the unit can be safely used for weekly processing. NOTE: Sequential records of tests should be kept to detect if any major changes in leak rates are occurring.
  • Page 62 3. Press TEST CYCLES button. CYCLE SELECT PREVAC PREVAC Pressing MAIN MENU returns display to GRAVITY GRAVITY screen #1. LIQUID LIQUID MAIN TEST MENU CYCLES 4. To begin Dart Warm-up, press DART WARMUP. CYCLE SELECT LEAK TEST Pressing STANDARD CYCLES returns DART DART display to screen #2.
  • Page 63 • Activate Seal – Door seal fills with steam and expands against the sterilizer door opening, forming an airtight seal. • Purge – Steam flows through the chamber for 1 minute. NOTE: The projected cycle completion time shown on the display is estimated.

  • Page 64: Dart Test Cycle Operation

    The Dart (Bowie-Dick) Test cycle is designed to test and document the ® 6.8 Dart Test Cycle adequacy of air removal from the chamber and a sample challenge load. Refer to "Testing for Prevacuum Efficiency" in S 3, T ECTION ECHNIQUES OF TERILIZATION Operation...
  • Page 65 7. To begin Dart Test, press DART TEST. CYCLE SELECT LEAK TEST Pressing STANDARD CYCLES returns display to screen #2. DART DART Pressing MAIN MENU returns display to TEST WARMUP screen #1. STANDARD MAIN CYCLES MENU NOTE: If DART TEST is pressed while the chamber door is open, a display screen will appear directing the operator to close door before continuing cycle operation.

  • Page 66: Aborting Cycles

    • Charge – After the last prevacuum pulse, chamber charges with steam to 132°C (270°F). • Sterilize – Sterilize phase begins when chamber temperature is equal to or greater than 132°C (270°F). Chamber temperature is printed every 2 minutes (or printed after each programmed print interval). The steam-to- jacket valve is regulated to maintain the chamber at 132.8°C (271°F).
  • Page 67 CYCLE ABORT ACKNOWLEDGE ARE YOU SURE YOU WISH TO ABORT CYCLE? Pressing CONTINUE CYCLE resumes cycle operation at the point where it was CONTINUE ABORT CYCLE interrupted. Display returns to the corresponding in-cycle status screen. If the cycle is aborted, the cycle will end.
  • Page 68 2. Screen #11 allows operator a final chance to continue with the current cycle WARNING – BURN HAZARD: in progress instead of aborting cycle operation. Sterilizer, rack/shelves, and 3. Press ABORT on screen #11. Printer records time the cycle was aborted. loading car will be hot after cycle is run.

  • Page 69: Entering Access Code

    ENTERING ACCESS CODE The access code feature is used to secure the sterilizer against unauthorized usage or programming. Separate access codes can be programmed to lock out sterilizer usage, the Change Values, menu and the Supervisory mode. NOTE: Access code is always activated for entry into the Supervisory mode. Refer to S 10, O , for details on the Supervisory mode.

  • Page 70: Change Values Menu Locked Out

    3. Enter assigned four-digit sterilizer access code using the numeric keypad. Once code is correctly entered, press ENTER. NOTE: If incorrect code is entered, pressing ENTER denies operator usage of the sterilizer and returns display to screen #0. ACCESS CODE A STERILIZER ACCESS CODE IS REQUIRED.
  • Page 71 2. Press CHANGE VALUES. OUT OF CYCLE OPTIONS STATUS CHANGE PRINT VALUES Pressing NEXT advances display to DUPLICATE DISPLAY screen #87. PRINT VALUES Pressing MAIN MENU returns display to PAPER PRINT screen #1. FEED VALUES MAIN NEXT MENU 3. Press assigned operator button. OPERATOR ACCESS MILLER DISABLED...
  • Page 72 5. Display advances to the Change Values menu (screen #14) and printer records name of operator and the date and time when Change Values was accessed. Operator may now modify the cycle values and sterilizer operating parameters. Refer to S 8, P , and ECTION...

  • Page 73: Programming Cycle Values

    PROGRAMMING CYCLE VALUES The Amsco Century Medium Steam Sterilizer is factory programmed with default processing cycles and cycle values (see Table 8-1). These preset values (parameters) can be modified to process varying loads which occur in the sterilizer's operating environment.

  • Page 74: Access Cycle Menu-Change Cycle Values

    To modify the preset cycle values, access Cycle Menu - Change Cycle Values 8.1 Access Cycle (screen #15) as follows: Menu – Change Cycle 1. Press OPTIONS on screen #1. Values S T E R I S S C I E N T I F I C STERILIZER PREPARED FOR: STERIS SCIENTIFIC Pressing CYCLE SELECT advances...
  • Page 75 3. Press CYCLES button. CHANGE VALUES TOO LONG CYCLES IN PHASE TIME/ Pressing RETURN returns display to SETUP DATE screen #13. Pressing MAIN MENU returns display to screen #1. MAIN RETURN MENU 4. Screen #15 allows operator to select the cycle to be modified. Pressing the cycle button corresponding with the cycle to be changed, advances display into the Change Values procedure for that cycle.

  • Page 76: Change Values Procedure

    The Change Values procedure is used to change preset cycle values 8.2 Change Values (parameters) for a particular cycle. The following procedure is an example of the Change Values procedure for a Prevacuum cycle. The cycle phase values Procedure depicted on the touch screen examples are the settings of the default Prevacuum cycle.
  • Page 77 4. Screen #20 is the first of three menu screens which list the programmable values for the Prevacuum cycle type. To change any of the listed cycle values, press the corresponding button. NOTE: A definition of each cycle value is given on the corresponding display screen.
  • Page 78 • Pressing PURGE TIME advances display to screen #28. Enter purge time using the numeric keypad. Time appears on display as it is being entered. CHANGE VALUES - PURGE TIME SET PURGE TIME 01:00 Pressing ← or → on numeric keypad moves the cursor to the left or right, (Minutes:Seconds) respectively.
  • Page 79 • Pressing MAX. PRESS. advances display to screen #31. Enter maximum pressure value using the numeric keypad. Allowable maximum pressure range is 0-45 psig. Pressure value appears on display as it is being entered. NOTE: If an out-of-range cycle value is entered, a display screen will appear indicating the incorrect value and the allowable range.
  • Page 80 5. Press NEXT button on screen #20. Screen #21 is the second of three menu screens which list the programmable values for the Prevacuum cycle type. To change any of the listed cycle values, press the corresponding button. NOTE: A definition of each cycle value is given on the corresponding display screen.
  • Page 81 • Pressing STER. TEMP advances display to screen #33. Enter sterilize temperature using the numeric keypad. Allowable sterilize temperature ranges are 121°-137°C (250°-279°F) for Prevac cycles; 100°-137°C (212°-279°F) for Gravity cycles; and 100°-123°C (212°-254°F) for Liquid cycle. Temperature appears on display as it is being entered. NOTE: If an out-of-range cycle value is entered, a display screen will appear indicating the incorrect value and the allowable range.
  • Page 82 • Pressing UNDER TEMP advances display to screen #35. Enter under temperature value using the numeric keypad. Temperature appears on display as it is being entered. If an under temperature alarm occurs, cycle operation will hold until the sterilize temperature recovers. Once minimum temperature is reached, sterilize phase may be programmed to either restart or resume at the time when the alarm is cleared.
  • Page 83 6. Press NEXT button on screen #21. Screen #22 is the third of three menu screens which list the programmable values for the Prevacuum cycle type. To change any of the listed cycle values, press the corresponding button. NOTE: A definition of each cycle value is given on the corresponding display screen.
  • Page 84 • Pressing VACUUM DRY advances display to screen #37. Enter vacuum dry value using the numeric keypad. Allowable vacuum dry range is 0- 29.9 inHg. Value appears on the display as it is being entered. NOTE: If an out-of-range cycle value is entered, a display screen will appear indicating the incorrect value and the allowable range.
  • Page 85 • If sterilizer is equipped with double doors, pressing INTERLOCK ad- vances display to screen #8. Enter interlock type using the numeric keypad. Interlock type appears on the display as it is being entered. NOTE: Default interlock type is #2. If different setting is desired, a separate interlock type must be set for each cycle.
  • Page 86 #3 = Door B is designated as the operating end (OE). Sterilizer must be loaded from door B, and can be unloaded from door A or door B. At end of cycle, operator must manually unseal the unload door by pressing UNSEAL DOOR touch screen button (screen #65) located on the same end as the door.
  • Page 87 8. From screen #15, remaining cycles can be modified if necessary. The procedures for changing other cycle values are similar to the Change Values procedure just outlined. Once all changes to the cycles and cycle values are completed, press RETURN. Display returns to screen #14. CYCLE MENU - CHANGE CYCLE VALUES PREVAC PREVAC...
  • Page 88 10. Refer to S 10, O , for information on the other ECTION CYCLE PTIONS options listed on screen #13. Press MAIN MENU to return display to main menu (screen #1). OUT OF CYCLE OPTIONS STATUS CHANGE PRINT VALUES DUPLICATE DISPLAY PRINT VALUES...

  • Page 89: Programming Operating Parameters

    PROGRAMMING OPERATING PARAMETERS ® The Amsco Century Medium Steam Sterilizer 26" x 37.5" is factory pro- grammed with default cycle values and operating parameters. The operating parameters are used to control the general way a sterilizer operates. Sterilizer operating parameters include time/date, too long in phase values and setup values.

  • Page 90: Time/Date

    3. Screen #14 allows operator the selection of either changing the cycle values or changing the sterilizer operating parameters. • To change cycle values (CYCLES), refer to S 8, P ECTION ROGRAMMING YCLE ALUES • To change a specific operating parameter (TOO LONG IN PHASE, TIME/ DATE or SETUP), refer to the description, included in this section, titled the same as the button on screen #14.
  • Page 91 3. Press TIME button. Enter time using the numeric keypad. Time appears on display as it is being entered. Once time is entered, press AM, PM or MIL to correctly identify the time. SET TIME AND DATE Pressing ← or → on numeric keypad TIME = 00:00 AM moves the cursor to the left or right, Hr Mn...

  • Page 92: Too Long In Phase

    Sterilizer uses the "too long in phase" values to monitor and control the length 9.3 Too Long In of the associated cycle phases. Each "too long in phase" value is factory programmed at 30 minutes. Phase To adjust the "too long in phase" values: 1.
  • Page 93 • Pressing CHARGE advances display to screen #41. Enter charge phase value using the numeric keypad. Value appears on display as it is being entered. CHANGE VALUES - TOO LONG IN CHARGE SET TOO LONG IN CHARGE 30:00 Pressing ← or → on numeric keypad moves the cursor to the left or right, (Minutes:Seconds) respectively.
  • Page 94 • Pressing EVACUATE advances display to screen #43. Enter evacuate phase value using the numeric keypad. Value appears on display as it is being entered. CHANGE VALUES - TOO LONG IN EVACUATE SET TOO LONG IN EVACUATE 30:00 Pressing ← or → on numeric keypad (Minutes:Seconds) moves the cursor to the left or right, respectively.
  • Page 95 • Pressing DOOR SEAL advances display to screen #54. Enter door seal phase value using the numeric keypad. Value appears on display as it is being entered. CHANGE VALUES - TOO LONG IN DOOR SEAL SET TOO LONG IN DOOR SEAL Pressing ←...

  • Page 96: Setup

    5. Once the correct "too long in phase" values have been entered, press RETURN on screen #53. Control saves all changes made and display returns to screen #14. CHANGE TOO LONG IN PHASE PARAMETERS TOO LONG IN: AIR BREAK = 30:00 Pressing PREVIOUS returns display to DOOR SEAL = 30:00 screen #40.

  • Page 97: Temp/Pres Units

    3. Screen #50 lists six setup options. To change a specific setup option, refer to the following description titled the same as the button on screen #50. SETUP TEMP/PRES PRINT UNITS FORMAT AUDIBLE DUPLICATE Pressing RETURN saves all changed SIGNALS PRINT setup values and returns display to screen #14.
  • Page 98 3. Select the desired pressure unit by pressing the appropriate button. Current unit setting appears under the screen title. Display automatically returns to screen #56 once a pressure unit is selected. NOTE: Recalibration is not required if pressure unit is changed. PRESSURE UNITS PSIG/INHG Pressing CANCEL returns display to...
  • Page 99 5. Select the desired temperature unit by pressing the appropriate button. Current unit setting appears under the screen title. Display automatically returns to screen #56 once a temperature unit is selected. NOTE: Recalibration is not required if temperature unit is changed. TEMPERATURE UNITS CELSIUS CELSIUS...

  • Page 100: Audible Signals

    9.4.2 Audible Signals This setup option allows adjustment of the audible signal tones sounded by the control. Three signals can be adjusted and each signal can be independently adjusted to one of three volume levels or turned off. 1. Press AUDIBLE SIGNALS on screen #50. SETUP TEMP/PRES PRINT...
  • Page 101 3. To stop the signal tone from sounding, press OFF. To select the desired volume level, press the corresponding button (LOW, MEDIUM, or HIGH). Current volume setting appears under the screen title. NOTE: Alarm signal tone cannot be turned off. Once signal tone is selected, press RETURN to return display to screen #49.

  • Page 102: Utility Shutdown

    9.4.3 Utility Shutdown Utility shutdown feature is used to automatically control the utility services to the sterilizer. The sterilizer can be programmed to automatically shut off and restart its steam and water supplies at any time during the day, conserving utilities.
  • Page 103 4. Once all utility shutdown periods are entered, press RETURN on screen #181. Control saves all changes made and display returns to screen #50. • Same Times For Each Weekday (Monday - Friday) 1. Press SAME TIMES FOR EACH WEEKDAY on screen #181. UTILITY SHUTDOWN SELECTION SAME TIMES FOR EACH WEEKDAY.
  • Page 104 3. Press RESTART TIME button. Enter restart time using the numeric keypad. Time appears on display as it is being entered. Once time is entered, press AM, PM or MIL to correctly identify the time. SET SHUTDOWN/RESTART TIMES Pressing ← or → on numeric keypad SHUTDOWN TIME moves the cursor to the left or right, 00:00:00 PM...
  • Page 105 3. Press SHUTDOWN TIME button. Enter shutdown time using the numeric keypad. Time appears on display as it is being entered. Once time is entered, press AM, PM or MIL to correctly identify the time. WEEKDAY UTILITY SHUTDOWN TIMES MONDAY THURSDAY Pressing RETURN returns display to TUESDAY...
  • Page 106 5. Once correct times are entered for the selected weekday, press RETURN on screen #182. Control saves the changed values and returns display to screen #184, allowing operator to program times for another weekday. SET SHUTDOWN/RESTART TIMES SHUTDOWN TIME Pressing ← or → on numeric keypad 00:00:00 PM moves the cursor to the left or right, respectively.
  • Page 107 •Saturday or Sunday 1.Press SATURDAY or SUNDAY on screen #181. UTILITY SHUTDOWN SELECTION SAME TIMES FOR EACH WEEKDAY. DIFFERENT TIMES FOR Pressing RETURN returns display to EACH WEEKDAY. screen #50. SATURDAY SUNDAY RETURN NOTE: If the sterilizer is running a cycle when the programmed utility shutdown time occurs, the sterilizer completes the cycle before shutting off its utilities.

  • Page 108: Print Format

    3. Press RESTART TIME button. Enter restart time using the numeric keypad. Time appears on display as it is being entered. Once time is entered, press AM, PM, or MIL to correctly identify the time. SET SHUTDOWN/RESTART TIMES SHUTDOWN TIME Pressing ←...
  • Page 109 2. Select desired print format by pressing the appropriate button. Current format setting appears under the screen title. PRINT FORMAT FULL EXTENDED Pressing RETURN saves the changed setting and returns display to screen #50. FULL Pressing MAIN MENU returns display to screen #1.

  • Page 110: Duplicate Print

    9.4.5 Duplicate Print The Duplicate Print feature is used to automatically furnish an additional printout at the end of each cycle. 1. Press DUPLICATE PRINT on screen #50. SETUP TEMP/PRES PRINT UNITS FORMAT AUDIBLE DUPLICATE Pressing RETURN returns display to SIGNALS PRINT screen #14.

  • Page 111: Turn Off Printer

    9.4.6 Turn Off Printer This setup option is used to turn off all printer operations. Press TURN OFF PRINTER on screen #50 to turn off all automatic and manual printer operations. Printer records the time and date when Turn Off Printer was selected.

  • Page 112: Out Of Cycle Options

    OUT OF CYCLE OPTIONS This section describes each out-of-cycle function accessible from the Out of cycle Option menu screens. As previously discussed in S 5, C , pressing OPTIONS on ECTION ONTROL NTERFACE 10.1 General screen #1 advances display to the first of two Out of cycle Options menu screens.

  • Page 113: Status Print

    Screen #87 lists the remaining out-of-cycle functions. To access any of the listed functions, refer to the description, included in this section, titled the same as the button on screen #87. OUT OF CYCLE OPTIONS SUPER- STANDBY VISORY Pressing PREVIOUS returns display to screen #13.

  • Page 114: Duplicate Print

    Duplicate Print is used to instantaneously generate a duplicate printed record 10.3 Duplicate Print of the last completed cycle. Press DUPLICATE PRINT on screen #13 to automatically generate a printout listing all data from the last completed cycle. NOTE: If sterilizer was just initialized, no data will be printed. OUT OF CYCLE OPTIONS STATUS CHANGE...

  • Page 115: Change Values

    Change Values allows access to the Change Values menu (screen #14). 10.5 Change Values Operator may program the cycle values and sterilizer operating parameters from this menu screen. Press CHANGE VALUES on screen #13 to advance display to the Change Values menu (screen #14).

  • Page 116: Cycles

    2. Screen #79 allows operator the selection of viewing any cycle value or operating parameter currently programmed. To view a specific value, refer to the following description titled the same as the button on screen #79. DISPLAY VALUES TOO LONG CYCLES IN PHASE Pressing RETURN returns display to...
  • Page 117 2. Press cycle button corresponding to the cycle and cycle values you wish to view. For example, press 1. PREVAC to view the cycle values programmed for the first cycle. CYCLE MENU - DISPLAY CYCLE VALUES PREVAC PREVAC Pressing RETURN returns display to GRAVITY GRAVITY screen #79.
  • Page 118 4. The second values screen appears listing more cycle values programmed for the selected cycle. If applicable, press NEXT to view remaining programmed values for the selected cycle. NOTE: Depending on cycle selected, there are either two or three values screens showing the programmed cycle values.

  • Page 119: Time/Date

    6. To exit the Cycle Menu, press RETURN on screen #93. Display returns to the Display Values menu (screen #79). CYCLE MENU - DISPLAY CYCLE VALUES PREVAC PREVAC Pressing MAIN MENU returns display to GRAVITY GRAVITY screen #1. LIQUID LIQUID MAIN RETURN MENU...

  • Page 120: Too Long In Phase

    10.6.3 Too Long in Phase To view the times currently programmed for the "too long in phase" values: 1. Press TOO LONG IN PHASE on screen #79. DISPLAY VALUES TOO LONG CYCLES IN PHASE Pressing RETURN returns display to screen #13. TIME/ Pressing MAIN MENU returns display to SETUP...
  • Page 121 2. Screen #90 lists the current pressure units, temperature units and audible signal settings programmed in the sterilizer control. Press NEXT to view additional programmed setup values. DISPLAY SETUP VALUES PRESSURE UNITS ........ PSIG/INHG TEMPERATURE UNITS ......CELSIUS AUDIBLE SIGNALS: Pressing RETURN returns display to ALARM ..........

  • Page 122: Print Values

    Print Values is used to generate a printed record of all the programmed values, 10.7 Print Values all the values changed since the last printout, or the values of a particular cycle. 10.7.1 All Values 1. Press PRINT VALUES on screen #13. OUT OF CYCLE OPTIONS STATUS CHANGE...

  • Page 123: All Values Changed

    10.7.2 All Values Changed 1. Press PRINT VALUES on screen #13. OUT OF CYCLE OPTIONS STATUS CHANGE PRINT VALUES Pressing NEXT advances display to DUPLICATE DISPLAY screen #87. PRINT VALUES Pressing MAIN MENU returns display to PAPER PRINT screen #1. FEED VALUES MAIN...
  • Page 124 2. Press A PARTICULAR CYCLE. PRINT VALUES ALL VALUES Pressing RETURN returns display to ALL VALUES CHANGED screen #13. Pressing MAIN MENU returns display to screen #1. A PARTICULAR CYCLE MAIN RETURN MENU 3. Press cycle button corresponding to the cycle and cycle values you wish to print out.

  • Page 125: Standby

    The Standby option allows sterilizer to be manually switched from the Operating 10.8 Standby mode to a Standby mode. When in Standby mode, all valves to the sterilizer are off, including jacket steam and water. NOTE: Sterilizer should be manually placed in the Standby mode if automatic utility shutdown feature (Section 8) is not selected and the sterilizer will not be used for an extended period of time (e.g., overnight).

  • Page 126: Display Sensors

    Display Sensors is used to view the current temperature and pressure readings 10.9 Display Sensors of the sterilizer. 1. Press DISPLAY SENSORS on screen #87. OUT OF CYCLE OPTIONS SUPER- STANDBY VISORY Pressing PREVIOUS returns display to screen #13. DISPLAY SERVICE Pressing MAIN MENU returns display to SENSORS...

  • Page 127: Supervisory

    Supervisory allows access to the Supervisory mode. From this mode, the 10.10 Supervisory authorized user may: » change the customer name and sterilizer ID number as it appears on the display and printouts » reset all cycle values and sterilizer operating parameters to the default values »...
  • Page 128 3. Screen #51 lists the functions that can be performed in the Supervisory mode. To perform a specific function, refer to the following description titled the same as the button on screen #51. SUPERVISORY CONTROL Pressing RETURN returns display to CHANGE CHANGE CUSTOMER NAME...

  • Page 129: Change Customer Name

    10.10.1 Change Customer This function allows supervisor to change the customer name as it appears on Name screens #0 and #1. 1. Press CHANGE CUSTOMER NAME on screen #51. SUPERVISORY CONTROL CHANGE CHANGE CUSTOMER NAME ACCESS CODES CHANGE DISPLAY Pressing RETURN returns display to STERILIZER ID ACCESS CODES screen #87.

  • Page 130: Change Sterilizer Id

    10.10.2 Change Sterilizer This function allows supervisor to change the sterilizer ID number as it appears on screen #0 and at the beginning of each in-cycle printout. 1. Press CHANGE STERILIZER ID on screen #51. SUPERVISORY CONTROL CHANGE CHANGE CUSTOMER NAME ACCESS CODES Pressing RETURN returns display to screen #87.

  • Page 131: Default Values

    10.10.3 Default Values This function allows supervisor to reset all values to the factory-programmed values. Press DEFAULT VALUES on screen #51 to automatically change all cycle values and sterilizer operating parameters back to the factory-programmed (default) values. SUPERVISORY CONTROL CHANGE CHANGE CUSTOMER NAME ACCESS CODES...
  • Page 132 2.Press CHANGE VALUES. ACCESS CODE SELECTION CHANGE VALUES Pressing RETURN returns display to STERILIZER screen #51. Pressing MAIN MENU returns display SUPERVISORY screen #1. MAIN RETURN MENU 3.Press YES to activate the access code feature. ACCESS CODE DO YOU WISH TO HAVE AN ACCESS CODE TO PREVENT Pressing NO refuses the access code UNAUTHORIZED ENTRY INTO...
  • Page 133 5.Enter operator's name, maximum of nine characters, using the alpha- numeric keypad. Operator name appears on display as it is being entered. Once name is correctly entered, press RETURN. NOTE: Operator name appears inside corresponding touch screen button on screen #126. CHANGE VALUES - OPERATOR NAME Pressing ←...
  • Page 134 7.Enter the new access code using the numeric keypad. New access code appears on display as it is being entered. Once the new code is correctly entered, press ENTER. CHANGE VALUES ACCESS CODE ENTER THE NEW ACCESS CODE. Pressing ← or → on numeric keypad moves the entry location to the left or right, respectively.

  • Page 135: Sterilizer Operation Access Codes

    9.Once access codes have been entered for all designated operators, press RETURN on screen #126. Control saves all changes made and display returns to screen #48. The operator will now be required to enter the new access code before the control will advance to the Change Values menu (screen #14), allowing programming of only the designated cycle values and operating parameters.
  • Page 136 2.Press STERILIZER. ACCESS CODE SELECTION CHANGE VALUES Pressing RETURN returns display to STERILIZER screen #51. Pressing MAIN MENU returns display SUPERVISORY screen #1. MAIN RETURN MENU 3.Press YES to activate the access code feature. ACCESS CODE DO YOU WISH TO HAVE AN ACCESS CODE TO PREVENT Pressing NO refuses the access code THE STERILIZER FROM...
  • Page 137 5.Enter operator's name, maximum of nine characters, using the alpha- numeric keypad. Operator name appears at bottom of display as it is being entered. Once name is correctly entered, press RETURN. NOTE: Operator name appears inside the corresponding touch screen button on screen #126 and at the beginning of each in-cycle printout.
  • Page 138 7.Enter the new access code using the numeric keypad. New access code appears on display as it is being entered. Once the new code is correctly entered, press ENTER. STERILIZER OPERATION ACCESS CODE ENTER THE NEW ACCESS CODE. Pressing ← or → on numeric keypad moves the entry location to the left or right, respectively.

  • Page 139: Supervisory Access Code

    Supervisory Access Code To change the access code which prevents unauthorized entry into the Supervisory mode: 1.Press CHANGE ACCESS CODES on screen #51. SUPERVISORY CONTROL CHANGE CHANGE CUSTOMER NAME ACCESS CODES Pressing MAIN MENU returns display to CHANGE DISPLAY screen #1. STERILIZER ID ACCESS CODES Pressing RETURN returns display to...
  • Page 140 3.Enter the old access code (access code currently programmed) using the numeric keypad. Access code appears on display as it is being entered. Once the old code is correctly entered, press ENTER. NOTE: Default access code is 0000. Call STERIS Engineering Service if Supervisory access code is forgotten.

  • Page 141: Display Access Codes

    5.The supervisor must now enter the new access code in order to access the Supervisory mode. 6.Once all access codes (change values, sterilizer, and supervisory) have been entered, press RETURN on screen #48. Display returns to screen #51. ACCESS CODE SELECTION CHANGE VALUES STERILIZER Pressing RETURN returns display to...
  • Page 142 2. Screen #46 lists the six operator names and corresponding access codes programmed to prevent use of the sterilizer. Current setting of the access code feature (enabled [turned on] or disabled [turned off]) appears under the screen title. Press CHANGE VALUES CODES to view the other programmed access codes.

  • Page 143: Interface

    10.10.6 RS-232 Interface This function allows supervisor to download cycle data into the device (either a computer or printer) connected at the RS-232 interface port. 1. Press RS-232 INTERFACE on screen #51. SUPERVISORY CONTROL CHANGE CHANGE CUSTOMER NAME ACCESS CODES CHANGE DISPLAY Pressing RETURN returns display to...

  • Page 144: Override Interlocks

    10.10.7 Override Interlocks If sterilizer is equipped with double doors, this function allows supervisor to override the programmed interlock type. 1. Press NEXT on screen #51. NOTE: NEXT button appears on screen #51 only if sterilizer is equipped with double doors. SUPERVISORY CONTROL CHANGE CHANGE...

  • Page 145: Service Mode

    Service mode is used to calibrate the sterilizer sensors, test input/output of the 10.11 Service Mode sterilizer sensors, control alarm and maintenance functions, and change all cycle values and operating parameters. 1. Press SERVICE MODE on screen #87. OUT OF CYCLE OPTIONS SUPER- STANDBY VISORY...

  • Page 146: Routine Maintenance

    Contact y o u r S T E R I S S e r v i c e Representative to schedule preventive maintenance. Table 11-1. Preventive Maintenance Schedule for Century Sterilizer Service Required Minimum Frequency PREPARATION FOR PREVENTIVE MAINTENANCE Discuss equipment with operators and check printouts.
  • Page 147 Table 11-1. Preventive Maintenance Schedule for Century Sterilizer (continued) Service Required Minimum Frequency MISCELLANEOUS PIPING COMPONENTS Inspect steam strainer for debris, clean as needed. 2x per year Inspect water strainer for debris, clean as needed. 2x per year Inspect jacket strainer for debris, clean as needed.

  • Page 148: Clean Chamber Drain Strainer

    11.1.1 Clean Chamber IMPORTANT: The chamber drain strainer must be cleaned at least once a day, Drain Strainer preferably in the morning before running the first cycle. 1. Remove the drain strainer from the drain in the bottom of the chamber as shown in Figure 11-1.

  • Page 149: Weekly Maintenance

    3. Once the chamber is clean, replace the shelf assembly using the reverse of CAUTION: Never use a wire the appropriate procedure given in step 1. Close the chamber emergency brush, abrasives, or steel manual exhaust valve. wool on door and chamber assembly.

  • Page 150: Change Printer Paper Roll

    11.2.2 Change Printer The printer paper roll should be changed whenever a colored stripe is visible Paper Roll on one or both edges of the printout paper. 1. Tear paper between take-up spool and printer. 2. Remove take-up spool from drive by inserting fingers in cavity as shown and pushing spool to the right.
  • Page 151 5. Insert new paper roll. 6. Insert end of paper into printer slot just behind ink cartridge. 7. Press "PAPER FEED" touch screen pad 8. Continue pressing "PAPER FEED" (or pull paper on display until paper advances gently) until about 46 cm (18") of paper hangs out through printer and ink cartridge, of printer.

  • Page 152: Change Printer Ink Cartridge

    9. Rotate spool in direction shown until paper is secure. 10. Reinstall take-up spool on magnetic idler. Manually roll up slack paper. 11.2.3 Change Printer The printer ink cartridge should be changed as soon as Ink Cartridge the type on printouts is light or faded, and before print- outs become difficult to read.
  • Page 153 3. Slip cartridge off end of paper; slip new cartridge over paper in the same way as before, making sure paper slides between ink cartridge housing and ink ribbon. 4. Install left end of cartridge first, then push right end in as shown, snapping it into place. 5.

  • Page 154: Quarterly Maintenance

    The door gasket should be examined for wear on a quarterly basis. If the gasket 11.3 Quarterly requires replacement, follow the procedure in S 11.3.1. Signs of wear ECTION include cracking, fraying, or tearing of the gasket material. Steam escaping Maintenance through the face of the gasket is a sure sign it should be replaced.
  • Page 155 Chamber Opening Door Use flat tool with rounded edges (such as a non- serrated table knife) to pry and twist one section of the seal partially from the groove. Reference Indicator, Enlarged Seal Hinged Door Model Shown Figure 11-2a. Remove Door Seal Location of Seal Date Information The following lot data is molded into the back side of the...

  • Page 156: Troubleshooting

    TROUBLESHOOTING This section pictorially lists and describes all the possible alarm condi- 12.1 General ® tions which may occur when operating the Amsco Century Medium Steam Sterilizer 26" x 37.5". If a problem occurs that is not described in this section, please call your WARNING –...

  • Page 157: Typical Alarm Printout

    * ALARM PRESSURE IN CHAMBER F 10:07:23A 61.7C 2.34P Full Print Format Shown Figure 12-2. Typical Alarm Printout When an alarm occurs the printer automatically generates a printout, typically 12.1.2 Typical Alarm listing alarm name, time alarm occurred, current chamber status, and any Printout associated sensor temperature.

  • Page 158: Too Long In Exhaust

    Alarm Description Screen with Operator Instructions 12.2.2 Too Long In Occurs if chamber does STATUS.. ALARM! Exhaust not exhaust to 4 psig TOO LONG IN EXHAUST (0.28 bar) within the CHAMBER: 000.0 C 0.0 psig allotted time. STERILIZER WILL: • AUTOMATICALLY TRY TO COMPLETE CYCLE •...

  • Page 159: Too Long In Air Break

    Alarm Description Screens with Service Instructions STATUS.. SERVICE INFORMATION: NOTE: This alarm has Too Long In Evacuation TOO LONG IN EVACUATION (Continued) two service help → → → → → CHAMBER DID NOT REACH REQUIRED VACUUM LEVEL WITHIN ALLOTTED TIME screens.

  • Page 160: Under Sterilize Temperature

    Alarm Description Screen with Service Instructions Too Long In Air Break STATUS.. SERVICE INFORMATION: TOO LONG IN AIR BREAK (Continued) → → → → → CHAMBER DID NOT AIR BREAK VACUUM TO 2 inHG WITHIN ALLOTTED TIME CAUSES AND CORRECTION: AIR INLET FILTER PLUGGED →...

  • Page 161: Over Sterilize Temperature

    Alarm Description Screen with Operator Instructions Occurs if chamber 12.2.6 Over Sterilize STATUS.. ALARM! temperature exceeds Temperature OVER STERILIZE TEMPERATURE the maximum sterilize CHAMBER: 000.0 C 0.0 psig temperature (Control STERILIZER WILL: temp. + over temp. • AUTOMATICALLY TRY TO COMPLETE CYCLE value).

  • Page 162: Door Unsealed

    Alarm Description Screen with Operator Instructions 12.2.7 Door Unsealed Occurs if steam STATUS.. ALARM! pressure in door seal DOOR UNSEALED drops below 5 psig CHAMBER: 000.0 C 0.0 psig (0.34 Pbar). STERILIZER WILL: • AUTOMATICALLY ABORT CYCLE • EXHAUST OR AIR BREAK CHAMBER TO ATMOSPHERIC PRESSURE OPERATOR INSTRUCTIONS: 1.

  • Page 163: Exhaust Rate Too Fast

    Alarm Description Screen with Service Instructions Chamber Pressure/ STATUS.. SERVICE INFO: CHAMBER PRESSURE/TEMPERATURE FAILURE Temperature Failure → → → → → PRESSURE OR TEMPERATURE OUTSIDE (Continued) NORMAL STEAM RANGE CAUSES AND CORRECTION: CONTROL OUT OF CALIBRATION → → → → → RECALIBRATE (CONTACT QUALIFIED SERVICE PERSON) TRANSDUCER, CP, MALFUNCTION →...

  • Page 164: Exhaust Rate Too Slow

    Alarm Description Screen with Operator Instructions Occurs if liquid cycle STATUS.. ALARM! 12.2.10 Exhaust Rate Too EXHAUST RATE TOO SLOW slow exhaust rate is too Slow CHAMBER: 000.0 C 0.0 psig slow. STERILIZER WILL: • AUTOMATICALLY TRY TO COMPLETE CYCLE •...

  • Page 165: Door Pressure Lock (Hinged Door Models Only)

    Alarm Description Screen with Service Instructions Reference Deviation STATUS.. SERVICE INFORMATION: Alarm, Continued REFERENCE/CHAMBER DEVIATION → → → → → DEVIATION BETWEEN REFERENCE AND CHAMBER PROBE IS MORE THAN 1 C. CAUSES AND CORRECTION: LOOSE CONNECTION IN PROBE WIRING → → → → → REPAIR CHAMBER REFERENCE PROBE FAILED →...

  • Page 166: Out-Of-Cycle Alarms

    The following alarm screens will appear only when the sterilizer is not 12.3 Out-of-cycle processing a cycle. Alarms Alarm Description Screen with Operator Instructions 12.3.1 Too Long Occurs if door switch STATUS.. ALARM! TOO LONG TO CLOSE DOOR To Close Door does not make contact CHAMBER: 000.0 C...

  • Page 167: Too Long To Open Door

    Alarm Description Screen with Operator Instructions 12.3.2 Too Long Occurs if door switch STATUS.. ALARM! To Open Door does not open within TOO LONG TO OPEN DOOR the allotted time. CHAMBER: 000.0 C 0.0 psig STERILIZER WILL: • REMAIN IN ALARM CONDITION UNTIL DOOR IS OPENED OPERATOR INSTRUCTIONS: 1.

  • Page 168: Waste Temperature Probe Failure

    Alarm Description Screen with Service Instructions STATUS.. SERVICE INFORMATION: Pressure In Chamber PRESSURE IN CHAMBER (Continued) → → → → → 2 psig PRESSURE SENSED IN CHAMBER WHEN NOT IN CYCLE CAUSES AND CORRECTION: SOLENOID VALVE MALFUNCTION → → → → → REPAIR S02 CONTROL OUT OF CALIBRATION →...

  • Page 169: Display Error

    Alarm Description Screen with Operator Instructions STATUS.. ALARM! DISPLAY ERROR 12.3.5 Display Error Occurs if the control Occurs if the control CHAMBER: 000.0 C 0.0 psig cannot communicate cannot communicate STERILIZER WILL: with the display. with the display. • AUTOMATICALLY TRY TO COMPLETE CYCLE OPERATOR INSTRUCTIONS: 1.
  • Page 170 Alarm Description Screen with Service Instructions Atmospheric Pressure STATUS.. SERVICE INFORMATION: ATMOSPHERIC PRESSURE ALARM Alarm, Continued → → → → → THE ATMOSPHERIC PRESSURE IS GREATER THAN 1 PSI FROM THE CALIBRATED ATMOSPHERIC PRESSURE CAUSES AND CORRECTION: THE STERILIZER IS AT A HIGHER ALTITUDE THAN WHERE IT WAS ORIGINALLY CALIBRATED (FACTORY) →...

  • Page 171: Description

    The following alarm screens will appear anytime the sterilizer is energized. 12.4 Sensor Alarms The sensors are continually monitored whenever the sterilizer is in or out of cycle. Alarm Description Screen with Operator Instructions 12.4.1 Water In Occurs if excess water STATUS..

  • Page 172: Too Long To Seal Door

    Alarm Description Screen with Service Instructions Too Long In Jacket STATUS.. SERVICE INFORMATION: Charge (Continued) TOO LONG IN JACKET CHARGE → → → → → JACKET DID NOT REACH REQUIRED TEMPERATURE WITHIN ALLOTTED TIME CAUSES AND CORRECTION: STEAM PRESSURE LESS THAN 50 PSIG →...

  • Page 173: Too Long To Unseal Door

    Alarm Description Screen with Operator Instructions 12.4.4 Too Long To Occurs if door seal STATUS.. ALARM! Unseal Door pressure does not TOO LONG TO UNSEAL DOOR drop below 5 psig CHAMBER: 000.0 C 0.0 psig (0.34 Pbar) within STERILIZER WILL: allotted time.

  • Page 174: Chamber Temperature Probe Failure

    Alarm Description Screen with Service Instructions Chamber Pressure STATUS.. SERVICE INFO: CHAMBER PRESSURE TRANSDUCER FAILURE Transducer Failure → → → → → TRANSDUCER, CP, OUTPUT VOLTAGE IS (Continued) OUTSIDE NORMAL RANGE CAUSES AND CORRECTION: LOOSE CONNECTION IN TRANSDUCER WIRING → → → → → REPAIR TRANSDUCER FAILED →...

  • Page 175: Jacket Temperature Probe Failure

    Alarm Description Screen with Operator Instructions 12.4.7 Jacket Occurs if jacket tem- STATUS.. ALARM! JACKET Temperature perature reading is TEMPERATURE PROBE FAILURE Probe Failure outside the normal CHAMBER: 000.0 C 0.0 psig range. JACKET: 000.0 C STERILIZER WILL: • AUTOMATICALLY ABORT CYCLE OPERATOR INSTRUCTIONS: 1.

  • Page 176: Exhaust Rate Too Fast

    Alarm Description Screen with Service Instructions Door Switch Failure STATUS.. SERVICE INFORMATION: (Continued) DOOR SWITCH FAILURE → → → → → DOOR SWITCH OPEN WHILE SEAL SWITCH CLOSED CAUSES AND CORRECTION: DOOR SWITCH MALFUNCTION → → → → → CHECK LS1(LS2) CONNECTIONS →...

  • Page 177: Service Procedures

    SERVICE PROCEDURES The material in this section is provided to allow for servicing components of 13.1 General the sterilizer most likely to need attention. These procedures are more advanced than cleaning and replacing expendables (such as printer paper and door seals). These procedures should always be performed by an WARNING –...

  • Page 178: Steam Trap Replacement

    • • • • • Reassembly 1. Insert screen into strainer body. Take care that no dirt or other particles remain in strainer body. 2. Replace and tighten hex plug. Use a new gasket if necessary. 3. Make certain that all pipe connections are tight after assembly. Refer to Figure 13-1.

  • Page 179: Safety Valve Test

    Solenoid Coil Housing Stationary Core Connector Prongs Shading Coil Bleed Orifice Core Tube Diaphragm Moveable Body Core Spring INLET OUTLET INLET OUTLET Pilot Orifice De-Energized Energized Figure 13-2. Internal Pilot-Operated Solenoid Valve. The safety valves are to be tested periodically (refer to Preventive Maintenance 13.7 Safety Valve Schedule at the beginning of Section 11).
  • Page 180 Table 13-1. Replacement Parts Century Medium Sterilizer Parts Listing Schematic Schematic Designation Description Part Number Designation Description Part Number SWITCH, Level, Chamber Flooded ....093927-069 S37 (NC) SOLENOID VALVE, Seal Retraction (OE) ..093910-479 CHECK VALVE, Filtered Air ........ 056402-067 •...
  • Page 181 Replacement part for color LCD display control, only. Replacement part for monochrome display control, only. Unprogrammed PC board, see Maintenance Manual (P764330-117) for instructions. 146665-952 Control released on Century Medium Sterilizers, Fall 2007. 146665-412 supersedes and is interchangeable with 141215-202. 146665-425 supersedes and is interchangeable with 146659-066.
  • Page 182 Figure 13-3. Piping Schematic (Parts Reference) 13-6 129373-496 Operator Manual Service Procedures...

  • Page 183: Waste Products Disposal

    The following are waste materials associated with the sterilizer. When 13.9 Waste disposing of waste materials, be sure to do so in compliance with federal, state and local regulations. Products • Printer paper - recyclable. Disposal • Printer ribbon - not recyclable. •...

  • Page 184: Appendix A: Screen Reference Table

    SCREEN REFERENCE TABLE APPENDIX A Each screen is identified by a number, located in the top right hand corner of the display screen. Numbers are used throughout the manual for reference only, and do not relate to the operating sequence of the screens. The following table lists the reference number of each screen, in numerical order, and the corresponding page number(s) where it pictorially appears within this manual.
  • Page 185 Screen Reference Table (continued) Screen Reference Number Page Number(s) 5-2, 5-4, 6-5, 6-12, 6-18, 6-24, 6-27, 6-29 12-3 12-3 12-3 12-4 12-4 12-1, 12-2 12-2 12-7 12-7 12-16 12-17 12-19 12-18 12-20 12-21 12-13 12-12 12-19 12-18 12-7 8-11, 8-14 12-8 12-12 12-12...
  • Page 186 Screen Reference Table (continued) Screen Reference Number Page Number(s) 12-16 12-16 12-18 12-19 12-16 12-16 12-6 12-6 12-20 12-20 12-11 12-11 12-8, 12-20 12-8, 12-20 12-8 12-8 12-12 12-12 12-8 12-11 12-15 12-15 12-15 12-14 12-10 Appendix A - Screen Reference Table Operating Instructions 129373-496...
  • Page 187 Screen Reference Table (continued) Screen Reference Number Page Number(s) 12-10 5-4, 6-24, 6-27, 6-30 10-34 8-10 8-10 8-12 8-12 5-3, 6-6 9-13 10-31 9-21 10-21, 10-25, 10-28, 10-30 9-12, 9-13 6-18, 6-19 9-9, 9-12, 9-14, 9-20, 9-22, 9-23 10-17, 10-18, 10-19, 10-20, 10-24, 10-28, 10-30, 10-32, 10-33 129373-496 Operating Instructions Appendix A - Screen Reference Table...
  • Page 188 Screen Reference Table (continued) Screen Reference Number Page Number(s) 9-6, 9-8 9-9, 9-10, 9-11 9-10 9-11 6-12, 6-13 10-32 10-17, 10-33 10-18 6-11, 6-17, 6-22 8-5, 10-22, 10-26 7-2, 7-3, 10-16 10-5, 10-8, 10-9 8-13 10-21 10-25 10-22 10-26, 10-29 10-23 10-27, 10-29 5-6, 10-2, 10-14, 10-15, 10-16, 10-34...
  • Page 189 Screen Reference Table (continued) Screen Reference Number Page Number(s) 10-15 10-6, 10-8 10-6 10-7 10-7 129373-496 Operating Instructions Appendix A - Screen Reference Table...

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