STERIS Eagle CenturyTM, Millennium Series User manual
MAINTENANCE PROCEDURES
STERIS
Eagle® Century
TM
Millennium Series
Sterilizers
(02/25/2000) P-764326-797
Rev. 1
and
©1994 – 2000 STERIS. All rights reserved. Printed in U.S.A.
LIMITATIONS OF LIABILITY AND INDEMNITY
IN NO CASE, WHETHER AS A RESULT OF A BREACH OF CONTRACT, BREACH OF WARRANTY
OR TORT (INCLUDING STERIS'S OR CUSTOMER'S WILLFUL ACTS OR NEGLIGENCE OR
STRICT LIABILITY) SHALL STERIS OR CUSTOMER BE LIABLE TO THE OTHER FOR ANY
CONSEQUENTIAL OR INCIDENTAL DAMAGES INCURRED BY THE OTHER, INCLUDING, BUT
NOT LIMITED TO, LOSS OF REVENUE, PROFITS OR GOODWILL. HOWEVER, NOTHING
CONTAINED IN THIS AGREEMENT IS INTENDED TO RELIEVE EITHER STERIS OR CUSTOMER
FROM CLAIMS, LIABILITY, DAMAGES OR EXPENSES RESULTING FROM BODILY INJURY,
INCLUDING DEATH, OR FROM PROPERTY DAMAGE INCURRED DUE TO THE WILLFUL ACTS,
THE NEGLIGENCE OF OR THE STRICT LIABILITY OF THAT PARTY.
STERIS AGREES TO DEFEND, INDEMNIFY AND HOLD CUSTOMER HARMLESS FROM ANY
AND ALL CLAIMS, LIABILITY, DAMAGES OR EXPENSES DUE TO PERSONAL INJURIES,
INCLUDING DEATH, TO EMPLOYEES OF STERIS AND CUSTOMER AND TO THIRD PARTIES
AND FOR PROPERTY DAMAGE TO THE EXTENT OF THE WILLFUL ACTS OF THE NEGLIGENCE
OF STERIS OR THE STRICT LIABILITY OF STERIS CAUSED BY THE ACTS OR OMISSIONS OF
STERIS. CUSTOMER AGREES TO DEFEND, INDEMNIFY AND HOLD STERIS HARMLESS FROM
ANY AND ALL CLAIMS, LIABILITY, DAMAGES OR EXPENSES DUE TO PERSONAL INJURIES,
INCLUDING DEATH, TO EMPLOYEES OF CUSTOMER AND STERIS AND TO THIRD PARTIES
AND FROM PROPERTY DAMAGE TO THE EXTENT OF THE WILLFUL ACTS OR THE NEGLIGENCE OF CUSTOMER OR THE STRICT LIABILITY OF CUSTOMER CAUSED BY THE ACTS OR
OMISSIONS OF CUSTOMER.
WARNING - COPYING PROHIBITED
This manual is protected by Federal Copyright Law, which
provides for damages of up to $20,000, as well as
criminal fines and imprisonment, for unauthorized copying.
A Word From STERIS
This manual contains important information on
proper maintenance of the Eagle® CenturyTM and
Millennium Series Sterilizers. All personnel involved
in the use of this equipment must carefully review
and comply with the warnings, cautions and instructions contained in this manual. These instructions
are important to protect the health and safety of
personnel servicing an Eagle Century and Millennium Series sterilizer and should be retained in a
conveniently accessible area for reference.
This sterilizer is specifically designed to process
goods using only the cycles as specified in this manual.
If there is any doubt about a specific material or
product, contact the manufacturer of the product for
the recommended sterilization technique.
STERIS carries a complete line of accessories for use
with this sterilizer to simplify, organize and assure
sterility of the sterilization process. Instrument trays
and biological/chemical monitoring systems are all
available to fulfill your facility's processing needs. A
STERIS representative will gladly review these
with you.
for details.
ADVISORYADVISORY
ADVISORY
ADVISORYADVISORY
A summary of the safety precautions to be observed
when operating this equipment can be found in
Section 1 of this manual. Do not operate the sterilizer
until you have become familiar with this information.
The Scientific series of this model sterilizer is not
designed to process flammable liquids nor liquids in
containers that are not designed for sterilization.
The Health Care series of this model sterilizer is not
designed to process flammable liquids nor liquids in
containers that are not designed for sterilization.
Any alteration of the sterilizer which affects its operation will void the warranty and could violate
state and local regulations and jeopardize insurance
coverage.
SERVICE INFORMATIONSERVICE INFORMATION
SERVICE INFORMATION
SERVICE INFORMATIONSERVICE INFORMATION
A thorough preventive maintenance program is
essential to safe and proper sterilizer operation.
Comprehensive instructions for routine preventive
maintenance can be found in the
nance, P-129367-410
You are encouraged to contact STERIS concerning
our Annual Maintenance Agreement. Under the
terms of this agreement, preventive maintenance,
adjustments, and replacement of worn parts are
done on a scheduled basis to assure equipment performance at peak capability and to help avoid untimely or costly interruptions. STERIS maintains a
global staff of well equipped, factory-trained technicians to provide this service, as well as expert repair
services. Please contact your STERIS representative
, provided.
Routine Mainte-
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764326-797
Table of Contents
Section Title Page
Section 1: Listing of Warnings and Cautions .................................. 2-1
Section 2: Cycles and Phases .......................................................... 2-1
2.1 Gravity/Flash Cycle ................................................................................... 2-1
2.1.1 Jacket Temperature – Out of cycle ............................................................ 2-1
2.1.2 Activate Seal(s) .......................................................................................... 2-1
2.1.3 Purge .......................................................................................................... 2-1
2.1.4 Charge ....................................................................................................... 2-1
2.1.5 Sterilize ....................................................................................................... 2-1
2.1.6 Fast Exhaust ............................................................................................... 2-1
2.1.7 Dry .............................................................................................................. 2-1
2.1.8 Air Break..................................................................................................... 2-1
2.1.9 Retract Seals .............................................................................................. 2-1
2.1.10 Complete .................................................................................................... 2-1
2.2 Prevac/Express Cycle ................................................................................ 2-3
2.2.1 Jacket Temperature – Out of cycle ............................................................ 2-3
2.2.2 Activate Seal(s) .......................................................................................... 2-3
2.2.3 Purge .......................................................................................................... 2-3
2.2.4 Vacuum Pulse ............................................................................................ 2-3
2.2.5 Pressure Pulse ........................................................................................... 2-3
2.2.6 Charge ....................................................................................................... 2-3
2.2.7 Sterilize ....................................................................................................... 2-3
2.2.8 Fast Exhaust ............................................................................................... 2-3
2.2.9 Dry .............................................................................................................. 2-3
2.2.10 Air Break..................................................................................................... 2-3
2.2.11 Retract Seals .............................................................................................. 2-3
2.2.12 Complete .................................................................................................... 2-3
2.3 Liquid Cycle ............................................................................................... 2-5
2.3.1 Jaket Temperature – Out of cycle .............................................................. 2-5
2.3.2 Activate Seal(s) .......................................................................................... 2-5
2.3.3 Purge .......................................................................................................... 2-5
2.3.4 Charge ....................................................................................................... 2-5
2.3.5 Sterilize ....................................................................................................... 2-5
2.3.6 Exhaust....................................................................................................... 2-5
2.3.7 Retract Seal(s)............................................................................................ 2-5
2.3.8 Vapor Removal ........................................................................................... 2-5
2.3.9 Complete .................................................................................................... 2-5
2.4 Steam Flush Pressure Pulse (SFPP) Cycle (Millennium only)..................... 2-7
2.4.1 General....................................................................................................... 2-7
2.4.2 Wrappid/Express ....................................................................................... 2-7
2.4.3 Wrappid/SFPP ............................................................................................ 2-7
2.4.4 SFPP........................................................................................................... 2-7
2.5 Leak Test Cycle .......................................................................................... 2-9
2.5.1 Activate Seal(s) .......................................................................................... 2-9
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764326-797
Table of Contents (continued)
Section Title Page
2.5.2 Purge.......................................................................................................... 2-9
2.5.3 Vacuum Pulse ............................................................................................ 2-9
2.5.4 Pressure Pulse ........................................................................................... 2-9
2.5.5 Charge ....................................................................................................... 2-9
2.5.6 Leak Test Evacuating ................................................................................. 2-9
2.5.7 Leak Test Stabilizing .................................................................................. 2-9
2.5.8 Leak Test .................................................................................................... 2-9
2.5.9 Air Break..................................................................................................... 2-9
2.5.9 Retract Seal(s)............................................................................................ 2-9
2.5.10 Complete .................................................................................................... 2-9
Section 3: Mechanical Components ................................................ 3-1
Section 4: Electrical Components ................................................... 4-1
4.1 Century Control Theory of Operation ......................................................... 4-1
4.1.1 Main Control ............................................................................................... 4-1
4.1.2 Incoming Power Terminal Block ................................................................. 4-1
4.1.3 Power Switch .............................................................................................. 4-1
4.1.4 Line Filter .................................................................................................... 4-1
4.1.5 Connector Board ........................................................................................ 4-1
4.1.6 Power Supply ............................................................................................. 4-1
4.1.7 CPU Board ................................................................................................. 4-1
4.1.7.1 CPU Chip ................................................................................................... 4-1
4.1.7.2 Flash Memory ............................................................................................. 4-2
4.1.7.3 Static RAM ................................................................................................. 4-2
4.1.7.4 A/D Converter............................................................................................. 4-2
4.1.7.5 Battery Back-up ......................................................................................... 4-2
4.2 Main Control - CPU Board.......................................................................... 4-2
4.2.1 CPU Board Setup....................................................................................... 4-2
4.2.2 Flash Chip Change..................................................................................... 4-2
4.2.3 Jumpers ..................................................................................................... 4-3
4.2.4.1 JP-1 & JP-2 146656-185 Boards Only........................................................ 4-3
4.2.4.2 JP-1 & JP-2 146656-065/069 Boards Only................................................. 4-4
4.2.5 JP-3 ............................................................................................................ 4-4
4.2.6 JP-4 ............................................................................................................ 4-4
4.2.7 Dip Switches .............................................................................................. 4-4
4.2.8 LED Display on CPU Board ....................................................................... 4-4
4.3 Main control – Power Supply...................................................................... 4-6
4.4 MAIN CONTROL – I/O BOARD .................................................................. 4-7
4.4.1 OVERVIEW ................................................................................................. 4-7
4.4.2 I/O CONFIGURATION ................................................................................ 4-7
4.4.2 Jumper ....................................................................................................... 4-7
4.5 Display ..................................................................................................... 4-12
4.6 Touch Screen ........................................................................................... 4-12
4.7 Display Module ........................................................................................ 4-12
4.8 Display Interface Board ........................................................................... 4-12
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Table of Contents (continued)
Section Title Page
4.9 Printer Board Assembly ........................................................................... 4-12
4.10 Speaker .................................................................................................... 4-12
4.11 Printer ....................................................................................................... 4-12
4.12 Paper Take Up Mechanism ...................................................................... 4-14
4.13 Analog Devices ........................................................................................ 4-14
4.13.1 RTD .......................................................................................................... 4-14
4.13.2 Pressure Transducer ................................................................................ 4-14
Section 5: Service Mode .................................................................. 5-1
5.1 Access Service Mode ................................................................................ 5-1
5.1.1 Scientific Sterilizers .................................................................................... 5-1
5.2 Access Service Mode ................................................................................ 5-2
5.2.1 Healthcare Sterilizers ................................................................................. 5-2
5.3 Calibration .................................................................................................. 5-3
5.3.1 Calibration Overview .................................................................................. 5-5
5.3.2 Calibrate Temperature ............................................................................... 5-5
5.3.2.1 Steam Method of Calibration...................................................................... 5-6
5.3.2.1a Calibrate Chamber Temperature ......................................................... 5-6
5.3.2.1b Calibrate Jacket Temperature ............................................................. 5-8
5.3.2.1c Calibrate Waste Temperature .............................................................. 5-9
5.3.2.2 Oil Bath Method of Calibration ................................................................. 5-10
5.3.2.3 Load Values Method of Temperature Calibration .................................... 5-12
5.3.3.2 Steam Method of Pressure Calibration .................................................... 5-14
5.3.3.2 External Method of Pressure Calibration .................................................. 5-15
5.3.3.3 Load Values Method of Pressure Calibration ........................................... 5-17
5.3.4 Temperature/Pressure Units .................................................................... 5-18
5.3.4.1 Pressure Units .......................................................................................... 5-18
5.3.4.2 Temperature Units .................................................................................... 5-19
5.3.5 Temperature/Pressure Verification ........................................................... 5-19
5.3.6 Calibration History .................................................................................... 5-19
5.4 Input/Output Tests ................................................................................... 5-20
5.5 Adjustments ............................................................................................. 5-21
5.5.1 Safety Valve Tests .................................................................................... 5-21
5.5.2 Door Sensor Adjustments ........................................................................ 5-21
5.5.3 Door Pressure Settings ............................................................................ 5-22
5.5.4 Leak Test .................................................................................................. 5-22
5.6 Valve History ............................................................................................ 5-22
5.6.1 Valve Service............................................................................................ 5-22
5.6.2 View Valve Actuation History .................................................................... 5-23
5.6.3 View Valve Cycle Count History ............................................................... 5-23
5.7 Alarm Maintenance .................................................................................. 5-24
5.7.1 Alarm List ................................................................................................. 5-24
5.7.2 Alarm Log ................................................................................................. 5-24
5.7.3 Show Screems ......................................................................................... 5-25
5.7.4 Pushbutton Test ....................................................................................... 5-25
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764326-797
Table of Contents (continued)
Section Title Page
5.7.5 Battery Saver............................................................................................ 5-25
5.7.6 Configure Machine ................................................................................... 5-25
5.7.6.1 Set Configurations .................................................................................... 5-26
5.8 Change Values ......................................................................................... 5-27
Section 6: Field Test Procedure ...................................................... 6-1
6.1 General....................................................................................................... 6-1
6.1.1 Section Index ............................................................................................. 6-1
6.2 Test Instrumentation Required ................................................................... 6-1
6.3 Installation Data .......................................................................................... 6-1
6.4 Installation Verification................................................................................ 6-2
6.5 Control Setup ............................................................................................. 6-2
6.6 Loss of Power Test ..................................................................................... 6-2
6.7 Input/Output Status and Wiring Check ...................................................... 6-2
6.8 Door Check ................................................................................................ 6-3
6.9 Electric Generator Set-Up (Electric Units Only) ......................................... 6-3
6.9.1 Boiler Low Water Cutoff Test ...................................................................... 6-4
6.10 PS1 (PS2) Setting ....................................................................................... 6-4
6.11 Temperature Calibration............................................................................. 6-4
6.12 Pressure Calibration ................................................................................... 6-4
6.13 Safety Valve Test and Regulator Setting.................................................... 6-4
6.14 Leak Test (Also refer to cycle chart in Section 2 of this manual) .............. 6-4
Section 7: Steam Generator Maintenance ...................................... 7-1
7.1 STEAM GENERATOR................................................................................. 7-1
7.1.1 Heating Element/Boiler Chamber/Probe Cleaning ..................................... 7-1
7.1.2 Steam Chamber Descaling/Flush Out ........................................................ 7-1
7.2 Pressure Switch Adjustments..................................................................... 7-2
7.2.1 Adjustable Components............................................................................. 7-2
7.2.2 Pressure Switch Adjustments..................................................................... 7-2
Section 8: Maintenance Procedures ................................................ 8-1
8.1 Door............................................................................................................ 8-1
8.1.1 Removal Procedure.................................................................................... 8-1
8.1.2 Inspection................................................................................................... 8-1
8.1.3 Door System Adjustments (16" and 20", Power and Manual Doors) .......... 8-1
8.2 Door Guide ................................................................................................. 8-1
8.2.1 Counterweight Guides ............................................................................... 8-2
8.2.2 Counterweight Cable Length Adjustment .................................................. 8-3
8.2.3 Counterweight Hard Down Stop ................................................................ 8-3
8.2.4 Door Down Stop ......................................................................................... 8-4
8.2.5 Counterweight Soft Stops .......................................................................... 8-4
8.2.6 Door Balancing........................................................................................... 8-4
8.2.7 Door Drive Adjustment ............................................................................... 8-4
8.2.8 Foot Pedal .................................................................................................. 8-5
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Table of Contents (continued)
Section Title Page
8.2.9 Door Up Sensor.......................................................................................... 8-6
8.2.10 Vapor Removal Solenoid Assembly ........................................................... 8-6
8.3 General Notes ............................................................................................ 8-7
8.4 Piping Manifolds......................................................................................... 8-7
8.4.1 Servicing Piping Manifolds and Components ............................................ 8-7
8.4.2 Steam Manifold .......................................................................................... 8-7
8.4.3 Exhaust Manifold ........................................................................................ 8-8
8.4.4 Removal: Exhaust Manifold ........................................................................ 8-9
8.4.5 Water Manifold ........................................................................................... 8-9
8.4.6 Removal: Water Manifold and Water Ejector Assembly ........................... 8-10
8.4.7 Removal: Heat Exchanger ....................................................................... 8-10
8.5 Control Components ................................................................................ 8-10
8.5.1 CPU Board ............................................................................................... 8-10
8.5.2 Flash Memory Chips — U13, U16, U15 and U12 .................................... 8-10
8.5.3 Battery ...................................................................................................... 8-12
8.5.4 I/O Board.................................................................................................. 8-12
8.5.5 U26 Chip .................................................................................................. 8-12
8.5.6 Relays....................................................................................................... 8-12
8.5.7 Power Supply ........................................................................................... 8-13
8.5.8 Main Control Box ...................................................................................... 8-13
8.5.9 Connector Board ...................................................................................... 8-14
8.6 Display Assembly..................................................................................... 8-14
8.6.1 Printer Board Assembly ........................................................................... 8-15
8.6.2 U8 ............................................................................................................. 8-15
8.6.3 Interface Board Assembly........................................................................ 8-15
8.6.4 U17 ........................................................................................................... 8-16
8.6.5 Display Module ........................................................................................ 8-16
8.6.6 Touch Screen ........................................................................................... 8-16
Section 9: Reference ........................................................................ 9-1
Single Door Wire Harness Tabulation ..................................................................... 9-1
Double Door Wire Harness Tabulation .................................................................... 9-2
Cable Assembly - P9/P10A (146657-774) .............................................................. 9-3
Cable Assembly - P9/P10A, P10B (146657-854) .................................................... 9-3
Cable Assembly - P10/S3, S7 (146657-773)........................................................... 9-4
Cable Assembly - P10/S3, S37, S38 ....................................................................... 9-5
Cable Assembly - J11/S2, S35, S36 (146657-74)9 ................................................. 9-6
Cable Assembly - J11/S2, S35 (146657-770) ......................................................... 9-6
Cable Assembly - P12/S4, S7 (1446657-771)......................................................... 9-7
Cable Assembly - P12/S4, S7 (1446657-743)......................................................... 9-7
Cable Assembly - S8 (136809-801) ........................................................................ 9-8
Cable Assembly - P18/LS1/LS2/LS3/LS4 (136809-697) ......................................... 9-8
Cable Assembly - P18/LS1/LS3 (136809-752) ........................................................ 9-9
Cable Assembly - P19/CS1/PS1 (136809-753) ....................................................... 9-9
Cable Assembly - P19/CS1/PS1/PS2 (136809-802) ............................................. 9-10
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Table of Contents (continued)
Section Title Page
Cable Assembly - P100 (136809-755) .................................................................. 9-10
Cable Assembly - AUS (136809-756) ................................................................... 9-10
Chamber Pressure Transducer Harness Assembly (136809-751) ....................... 9-11
RTD Cable Assembly (136809-751)...................................................................... 9-11
Control box Assembly and Display Cable Assembly (146657-782) ..................... 9-12
Motor Housing Assembly (146657-837)................................................................ 9-13
Assembly - Electric Steam Generator Piping
and Wiring Package - 16" (146660-103/104) ................................................... 9-13
Assembly - Electric Steam Generator Piping
and Wiring Package - 20" (146660-105/106) ................................................... 9-13
Final Wiring Assembly (146657-842/845).............................................................. 9-15
Printer Display Control Housing (146657-786) ...................................................... 9-16
Display Control Housing, NOE (146657-850) ....................................................... 9-18
Display Control Housing Assembly (146657-850) ................................................ 9-19
Machine Schematic “Small Sterilizer”, Single Door (146657-781) ........................ 9-20
Machine Schematic “Small Sterilizer”, Double Door (146657-867) ....................... 9-22
Control Box Assembly (146657-782) .................................................................... 9-25
Steam Generator, Electric (146660-101/102)........................................................ 9-27
Assembly, Door Motor Housing (146657-837) ...................................................... 9-28
Cable Assembly - PA/PB, Early Century (136809-754) ........................................ 9-29
Cable Assembly - PA/PB, Current Century (136809-754 ...................................... 9-31
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764326-797
Section 1: Listing of Warnings and Cautions
The following is a listing of safety precautions which must be observed when operating or servicing 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.
Observance of these safety precautions will minimize the risk of personal injury and/or the possible use of
improper maintenance methods which may damage the unit or render it unsafe. It is important to
understand that these precautions are not exhaustive. STERIS could not possibly know, evaluate and advise
maintenance departments of all conceivable ways in which maintenance might be done or the possible
hazardous consequences of each way.
WARNING — BURN HAZARD:
Repairs and adjustments should be attempted only by authorized persons fully acquainted with
!
this equipment. Use of inexperienced, unqualified persons to work on the equipment or the
installation of unauthorized parts could cause personal injury or result in costly damage!
Before performing any cleaning or maintenance procedures allow sterilizer, generator (if
!
applicable) and accessories to cool to room temperature .
Sterilizer and rack/shelves will be HOT after cycle is run. Always wear protective gloves and
apron (also face shield if processing liquids) when removing a processed load. Protective
!
gloves and apron must be worn when reloading sterilizer following previous operation.
A steam supply malfunction, identified by an audible (warble tone) and visual alarm, can cause
!
the sterilizer chamber to fill with scalding water.
• Do not open the door.
• Call for service immediately.
Failure to shut off the steam supply when cleaning or replacing strainers can result in serious
!
injury.
!
Jacket pressure must be at 0 psig before beginning work on the jacket trap.
Proper testing of safety valves requires that it be under pressure. Exhaust from the safety valve
!
is hot and can cause burns. Proper safety attire (gloves, eye protection, insulated overalls) as
designated by OSHA are required. Testing is to be performed by qualified service personnel only.
Do not remove the Jacket RTD for jacket calibration until the chamber and jacket gauges read
!
0 psig.
Depressurize jacket before removing jacket RTD. Always verify that chamber and jacket pressure
is at 0 psig by observing the jacket and pressure gauges behind the front access door.
!
WARNING — ELECTRIC SHOCK HAZARD:
DISCONNECT FACILITY POWER OR PLACE CONTROL DISCONNECT SWITCH, located on
control box, to OFF before removing or replacing any fuses or printed circuits boards from the
!
sterilizer's control section.
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WARNING — EXPLOSION HAZARD:
Healthcare sterilizers are not designed to process liquids.
!
Scientific sterilizers are not designed to process flammable liquids.
!
Do not use this sterilizer in the presence of flammable compounds.
!
WARNING — FALL HAZARD:
To prevent falls, keep floors dry by wiping up any spilled liquids or condensation in sterilizer
!
loading or unloading area(s).
WARNING — STERILITY ASSURANCE HAZARD:
Load sterility may be compromised if the biological air removal or air leak test indicates a
!
potential problem. If these indicators show a potential problem, refer the situation to a qualified
service technician before using the sterilizer further.
According to AAMI standards, a measured leak rate greater than 1 mm Hg/minute indicates a
!
problem with the sterilizer. Refer the situation to a qualified service technician before using the
sterilizer further.
WARNING — PERSONAL INJURY HAZARD:
Regularly scheduled preventive maintenance is required for safe and reliable operation of this
!
equipment. Contact your STERIS Service Representative to schedule preventive maintenance.
When closing the chamber door, keep hands and arms out of the door opening, and make sure
!
opening is clear of obstructions.
Before entering chamber for cleaning or servicing, turn main power switch OFF.
!
Area must be properly vented to prevent buildup of fumes. Wear eye protection and gloves when
!
pouring descaler into unit.
The sterilizer door weighs approximately 35 lbs (16") or 70 lbs (20"). Always use care when
!
removing the door. Two service persons should always be present when removing the 20" door.
CAUTION — POSSIBLE EQUIPMENT DAMAGE
Insufficient Service Clearance will make repairs more difficult and time consuming.
!
Piping sized too small may cause water hammer, resulting in damage to the sterilizer.
!
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 in Hg. Consult manufacturer's recommendations
to ensure your equipment can withstand this depth of vacuum before selecting 0 dry time.
Never use a wire brush, abrasives or steel wool on door and chamber assembly. Do not use
!
cleaners containing chloride on stainless steel surfaces. Chloride based cleaners will deteriorate stainless steel, eventually leading to failure of the vessel.
After installation it is mandatory to brace piping at the drain funnel so that it will not move
!
vertically.
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764326-797
Removing the door seal gasket with a tool such as a screwdriver (the recommended method) in
!
most cases will cut or otherwise damage the gasket so that it cannot be further used.
• Do not remove the gasket unless absolutely necessary.
• Do not use a sharp tool to install the gasket.
Allow thermostatic traps to cool to room temperature before removing cover. Since there is
!
nothing to limit expansion, the diaphragm may rupture or fatigue if trap is opened while hot.
Failure to flush generator daily could result in malfunction of the generator. Warranty on the
!
generator will be voided unless flushed daily.
Actuation at less than 75% of rated pressure can allow debris to contaminate the seat and cause
!
the safety valve to leak. A leaking safety valve must be replaced.
Whenever working under the sterilizer door, raise the door to its full up position and insert both
tethered door pins.
!
initiated.
Whenever handling electronic components, use of a grounding wrist strap is mandatory to
!
prevent static discharge damage.
Be sure the pins are subsequently removed before door actuation is
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764326-797
2.12.1
GRAVITY/FLASH CYCLEGRAVITY/FLASH CYCLE
2.1
GRAVITY/FLASH CYCLE
2.12.1
GRAVITY/FLASH CYCLEGRAVITY/FLASH CYCLE
Section 2: Cycles and Phases
2.1.62.1.6
2.1.6
2.1.62.1.6
Fast ExhaustFast Exhaust
Fast Exhaust
Fast ExhaustFast Exhaust
NOTE: S7 solenoid valve is used to control the waste
water temperature below 140°F. S7 will turn on any time
it is necessary to cool the waste temperature.
NOTE: The status shown on the display will change
during the cycle but the screen will remain the same for
most of the phases. The only phases which use different screens are: air break and retract because there is
no abort during these phases, and the cycle complete
phase. The status changes are shown below.
NOTE: Components shown in parentheses ( ) denote
components used only on double door sterilizers.
2.1.12.1.1
2.1.1
2.1.12.1.1
On Health Care units, the jacket is maintained at the
temperature the previous cycle was run. On Scientific units, the jacket is maintained at 115°C.
2.1.22.1.2
2.1.2
2.1.22.1.2
(38) (Door Exhaust) will be energized for 1.5 seconds. S35 (36) (Door Seal) will pulse during this
time. After 1.5 seconds S37 (38) will be deenergized
and S35 (36) will be energized. When the pressure
behind the seal reaches 10 psig and after a 5 second
delay, the cycle will advance to the Purge phase.
2.1.32.1.3
2.1.3
2.1.32.1.3
S2 (Steam to Chamber), S3 (Fast Exhaust), S4 (Cooling Water), and S35 (36) will be on. S7 (Vacuum &
Cooling Water) and S9 (Steam to Jacket) will pulse
throughout cycle to maintain effluent water temperature. S7 is normally off because S4 will keep
effluent cool. S9 will shut off if chamber pressure is
greater than 10 psig for a 265°F cycle.
2.1.42.1.4
2.1.4
2.1.42.1.4
Jacket Temperature – Jacket Temperature –
Jacket Temperature –
Jacket Temperature – Jacket Temperature –
Activate Seal(s)Activate Seal(s)
Activate Seal(s)
Activate Seal(s)Activate Seal(s)
PurgePurge
Purge
PurgePurge
ChargeCharge
Charge
ChargeCharge
Out of cycleOut of cycle
Out of cycle
Out of cycleOut of cycle
S2 will go off. S3, S4 and S35 (36) will be on.
• S7 and S9 will be intermittent while controlling
the effluent and jacket temperatures.
• Fast exhaust should last less than 1 minute.
• Wait until display shows 4 psig.
2.1.72.1.7
2.1.7
2.1.72.1.7
S4 will go off. S3, S7 and S35 (36) will be on.
• S9 will be intermittent while controlling the jacket
• The Gravity and Flash cycles do not have a dry
2.1.82.1.8
2.1.8
2.1.82.1.8
S1, S35 (36) will be on.
• S7 and S9 may be intermittent while controlling
2.1.92.1.9
2.1.9
2.1.92.1.9
S1 will remain on. S35 (36) will turn off. S7, S37 (38)
will turn on. After the seal pressure switch opens
(less than 10 psig), a vacuum will be pulled for an
additional 18 seconds. If zero dry time is selected,
the door motor will energize for a few seconds to
slightly open the door to vent any excess vapor. This
vent period will last 1 minute.
2.1.102.1.10
2.1.10
2.1.102.1.10
S37 (38) will be on. S7 will be intermittent. S9 will
maintain jacket temperature at approximately 270oF;
all others will be off. A summary of the values
attained during the cycle will be printed. Open the
door(s).
DryDry
Dry
DryDry
temperature.
time, instead they use a slow vapor removal.
Air BreakAir Break
Air Break
Air BreakAir Break
the temperature of the waste water and jacket.
Retract SealsRetract Seals
Retract Seals
Retract SealsRetract Seals
CompleteComplete
Complete
CompleteComplete
S3 and S4 will go off. S2 and S35 (36) will be on. S7
and S9 will remain intermittent. Verify that chamber is charging with steam and will charge until the
sterilize set temperature value 250°F is reached. S9
will pulse, to limit overshoot, if pressure is over 15
psig for a 250°F cycle or 27 psig for a 270°F cycle.
2.1.52.1.5
2.1.5
2.1.52.1.5
S2 and S35 (36) will remain on. S9 will be intermittent while controlling temperature at set point. S7
will be intermittent while controlling temperature
of the waste water. Wait until sterilize time reaches
0:00.
SterilizeSterilize
Sterilize
SterilizeSterilize
764326-797
2-1
Figure 2-1. Gravity/Flash Cycle Graph
2-2
764326-797
2.22.2
PREVAC/EXPRESS/DART (BOWIE-PREVAC/EXPRESS/DART (BOWIE-
2.2
PREVAC/EXPRESS/DART (BOWIE-
2.22.2
PREVAC/EXPRESS/DART (BOWIE-PREVAC/EXPRESS/DART (BOWIEDICK) CYCLEDICK) CYCLE
DICK) CYCLE
DICK) CYCLEDICK) CYCLE
NOTE: S7 solenoid valve is used to control the waste
water temperature below 140°F, S7 will turn on any
time it is necessary to cool the waste temperature.
NOTE: Components shown in parentheses ( ) denote
components used only on double door sterilizers.
perature value 270°F. is reached.
2.2.72.2.7
2.2.7
2.2.72.2.7
S9 will be intermittent while controlling temperature
at set point. S2 and S35 (36) will remain on. S7 will be
intermittent while controlling temperature of the
waste water. The DART cycle is fixed at 3:30 minutes
exposure.
SterilizeSterilize
Sterilize
SterilizeSterilize
2.2.12.2.1
2.2.1
2.2.12.2.1
On Health Care units, the jacket is maintained at
the temperature the previous cycle was run. On
Scientific units, the jacket is maintained at 115°C.
2.2.22.2.2
2.2.2
2.2.22.2.2
S37 (38) (Door Exhaust) will be energized for 1.5
seconds. S35 (36) (Door Seal) will pulse during this
time. After 1.5 seconds S37 (38) will be deenergized
and S35 (36) will be energized. When the pressure
behind the seal reaches 10 psig and after a 5 second
delay, the cycle will advance to the Purge phase.
2.2.32.2.3
2.2.3
2.2.32.2.3
S2 (Steam to Chamber), S3 (Fast Exhaust), S4 (Cooling Water), and S35 (36) will be on. S7 (Vacuum
and Cooling Water) will be intermittent to maintain the effluent temperature. S9 (Steam to Jacket)
will be intermittent to maintain jacket temperature.
2.2.42.2.4
2.2.4
2.2.42.2.4
S2 turns off. After 4 psig is reached, S4 will turn off
and S7 will turn on. S9 will be intermittent while
controlling the jacket temperature. A vacuum will
be pulled on the chamber for 1 minute (after 4 psig
is reached) until 10 inHg is reached. After the
second vacuum pulse the cycle will advance to the
Charge.
Jacket Temperature – Out of cycleJacket Temperature – Out of cycle
Jacket Temperature – Out of cycle
Jacket Temperature – Out of cycleJacket Temperature – Out of cycle
Activate Seal(s)Activate Seal(s)
Activate Seal(s)
Activate Seal(s)Activate Seal(s)
PurgePurge
Purge
PurgePurge
Vacuum PulseVacuum Pulse
Vacuum Pulse
Vacuum PulseVacuum Pulse
2.2.82.2.8
2.2.8
2.2.82.2.8
S2 will go off. S3, S4 and S35 (36) will be on. S7 and
S9 will be intermittent while controlling the effluent
and jacket temperatures. Fast exhaust should last
less than 1 minute. Wait until display shows 4 psig.
2.2.92.2.9
2.2.9
2.2.92.2.9
S4 will go off. S3, S7 and S35 (36) will be on. S9 will
be intermittent while controlling the jacket temperature.
2.2.102.2.10
2.2.10
2.2.102.2.10
S1, S35 (36) will be on. S7 and S9 may be intermittent
while controlling the temperature of the waste water
and jacket.
2.2.112.2.11
2.2.11
2.2.112.2.11
S1 will remain on. S35 (36) will turn off. S7, S37 (38)
will turn on. After the seal pressure switch opens
(less than 10 psig), the vacuum will be pulled for an
additional 18 seconds.
2.2.122.2.12
2.2.12
2.2.122.2.12
S1 will turn off. S37 (38) will be on. S7 will be
intermittent while controlling the effluent temperature and S9 will maintain jacket temperature at approximately 285°F, all others will be off. A summary
of the values attained during the cycle will be printed.
Open the door(s).
Fast ExhaustFast Exhaust
Fast Exhaust
Fast ExhaustFast Exhaust
DryDry
Dry
DryDry
Air BreakAir Break
Air Break
Air BreakAir Break
Retract SealsRetract Seals
Retract Seals
Retract SealsRetract Seals
CompleteComplete
Complete
CompleteComplete
2.2.52.2.5
2.2.5
2.2.52.2.5
S3 turns off. S2, S9 and S35 (36) will be on. S7 will
be intermittent. Wait until the pressure reaches 26
psig. Vacuum pulse will repeat. (2 pulses for Express, 4 pulses for Prevac and DART cycles.)
2.2.62.2.6
2.2.6
2.2.62.2.6
S3 will go off. S2, and S35 (36) will be on. S9 will be
on for a 285°F cycle and will operate intermittently
for a 270°F. cycle, to limit overshoot. S7 will be
intermittent. Verify that chamber is charging with
steam and will charge until the sterilizer set tem-
Pressure PulsePressure Pulse
Pressure Pulse
Pressure PulsePressure Pulse
ChargeCharge
Charge
ChargeCharge
2-3
764326-797
** 2 pulses shown for Express cycle, Prevac and DART has 4 pulses.
*** DART cycle exposure is fixed at 3:30 minutes.
Figure 2-2. Prevac/Express/DART (Bowie-Dick) Cycle Graph
2-4
764326-797
2.32.3
LIQUID CYCLELIQUID CYCLE
2.3
LIQUID CYCLE
2.32.3
LIQUID CYCLELIQUID CYCLE
2.3.52.3.5
2.3.5
2.3.52.3.5
SterilizeSterilize
Sterilize
SterilizeSterilize
NOTE: S7 solenoid valve is used to control the waste
water temperature below 140oF. S7 will turn on any time
it is necessary to cool the waste temperature.
NOTE: The status shown on the display will change
during the cycle but the screen will remain the same.
Because of this, only one display will be shown and the
status changes will be explained below. The status
changes are shown below.
NOTE: Components shown in parentheses ( ) denote
components used only on double door sterilizers.
2.3.12.3.1
2.3.1
2.3.12.3.1
On Health Care units, the jacket is maintained at the
temperature the previous cycle was run. On Scientific units, the jacket is maintained at 115°C.
2.3.22.3.2
2.3.2
2.3.22.3.2
S37 (38) (Door Exhaust) will be energized for 1.5
seconds. S35 (36) (Door Seal) will pulse during this
time. After 1.5 seconds S37 (38) will be deenergized
and S35 (36) will be energized. When the pressure
behind the seal reaches 10 psig and after a 5 second
delay, the cycle will advance to the Purge phase.
2.3.32.3.3
2.3.3
2.3.32.3.3
S2 (Steam to Chamber), S3 (Fast Exhaust), S4 (Cooling Water), and S35 (36) will be on. S9 (Steam to
Jacket) will pulse throughout cycle. S7 (Vacuum &
Cooling Water) will normally be off but may pulse
to assist S4 in maintaining effluent water temperature.
2.3.42.3.4
2.3.4
2.3.42.3.4
S3 and S4 will go off. S2 and S35 (36) will be on. S7
will remain intermittent, in order to limit overshoot. S9 will pulse if pressure is above value indicated in chart below. (Note that if sterilize temperature is less than 230oF, pressure is controlled at or
below 6 psig. Verify that chamber is charging with
steam and will charge until the sterilize set temperature value is reached.
Jaket Temperature – Out of cycleJaket Temperature – Out of cycle
Jaket Temperature – Out of cycle
Jaket Temperature – Out of cycleJaket Temperature – Out of cycle
Activate Seal(s)Activate Seal(s)
Activate Seal(s)
Activate Seal(s)Activate Seal(s)
PurgePurge
Purge
PurgePurge
ChargeCharge
Charge
ChargeCharge
S9 will be intermittent while controlling temperature at set point. S2 and S35 (36) will remain on. S7
will be intermittent while controlling temperature
of the waste water. Wait until sterilize time reaches
0:00
2.3.62.3.6
2.3.6
2.3.62.3.6
S9 will turn off. S35 (36) will be on. The normally
open slow exhaust solenoid S40 will cycle ON/OFF
to maintain the correct exhaust rate. The rates are
maintained between two transition points as follows:
• From sterilize pressure to 4.2 psig the rate is 1.6
• From 4.2 psig to 5" Hg the rate is 0.6 psi/min.
NOTE: These transition rates can be adjusted for high
altitudes in the service mode.
The control monitors the pressure drop in exhaust
versus the time in exhaust to determine if the exhaust rate is too fast or too slow. If the exhaust rate
is too fast, S40 will energize (close) to slow the rate.
If the exhaust rate is too slow, S40 will deenergize
(open) and S3 will cycle ON/OFF to help drop
chamber pressure. If the pressure varies by more
than 2 psi from specification, an alarm will occur.
Once the pressure reaches 0 psig S7 will be energized to pull the chamber to a vacuum of 5 inHg at
a rate of 1.2 inHg/min by intermittently controlling
S3. S40 will be on. Once 5 inHg is reached S7 will be
deenergized and S1 (Air Break) will be energized to
break to atmospheric pressure, S3 and S40 will turn
off. Once 2 inHg is reached cycle advances to Door
Seal Retract.
2.3.72.3.7
2.3.7
2.3.72.3.7
S3, S35 (36) will turn off. S7, S38 (38) will turn on.
After the seal pressure switch opens (less than 10
psig), a vacuum will be pulled for an additional 18
seconds and once 1 inHg is reached cycle advances
to vapor removal.
2.3.8 2.3.8
2.3.8
2.3.8 2.3.8
ExhaustExhaust
Exhaust
ExhaustExhaust
psi/min.
Retract Seal(s)Retract Seal(s)
Retract Seal(s)
Retract Seal(s)Retract Seal(s)
Vapor RemovalVapor Removal
Vapor Removal
Vapor RemovalVapor Removal
Sterilize Pressure
Temperature (below this value)
less than 230°F less than 2 psig
230°F 6 psig
245°F 15 psig
255°F 21 psig
265°F 27 psig
VR1 (VR2) will turn on. S37 (S38) will remain on. S1
and S7 will turn off. This phase will last for 6
minutes.
2.3.92.3.9
2.3.9
2.3.92.3.9
S37 (38) will be on. S9 will maintain jacket temperature at approximately 115oF. A summary of the
values attained during the cycle will be printed.
Open the door(s).
2-5
764326-797
CompleteComplete
Complete
CompleteComplete
NOTE: Transition points for slow/fast exhaust are adjustable for altitude in the service mode.
Figure 2-3. Liquid Cycle Graph
2-6
764326-797
2.42.4
STEAM FLUSH PRESSURE PULSESTEAM FLUSH PRESSURE PULSE
2.4
STEAM FLUSH PRESSURE PULSE
2.42.4
STEAM FLUSH PRESSURE PULSESTEAM FLUSH PRESSURE PULSE
(SFPP) CYCLE (SFPP) CYCLE
(SFPP) CYCLE (Millennium only)
(SFPP) CYCLE (SFPP) CYCLE
2.4.12.4.1
2.4.1
2.4.12.4.1
Millennium sterilizers utilize the pressure pulse
cycles developed by the former Joslyn Sterilizer
Corporation, now part of STERIS. This section
describes the operation of cycles available on Millennium sterilizers.
2.4.22.4.2
2.4.2
2.4.22.4.2
This cycle is shown on the display as WRAP/EXPR
and is a 4 minute 270oF exposure with 3 minute dry
to be used for single wrapped instrument trays. The
cycle uses two (2) steam-flush pressure pulses in the
conditioning phase.
2.4.32.4.3
2.4.3
2.4.32.4.3
This cycle is shown on the display as WRAP/SFPP
and is a 4 minute 270oF exposure with 20 minute dry
to be used for containers, single or double wrapped
instrument trays. The cycle uses two (2) steam-flush
pressure pluses in the conditioning phase. This cycle
is essentially the same as the WRAPPID/EXPRESS
except that it has a longer dry time.
2.4.42.4.4
2.4.4
2.4.42.4.4
The cycle is shown on the display as SFPP and is a 4
minute, 270oF exposure with 20 minute dry to be
used for porous items. The cycle uses three (3) stemflush pressure pulses in the conditioning phase.
This cycle is essentially the same as the WRAPPID/
SFPP except it has one additional conditioning pulse
for porous loads.
Steam-Flush Pressure Pulse Cycle GraphSteam-Flush Pressure Pulse Cycle Graph
Steam-Flush Pressure Pulse Cycle Graph
Steam-Flush Pressure Pulse Cycle GraphSteam-Flush Pressure Pulse Cycle Graph
The cycle graph shown can be used to interpret the
operation of all three steam-flush cycles used on the
Millennium sterilizer. The Millennium will operate
in the same manner as a Century with respect to
door control and sterilize phase operation. Differences occur during the conditioning phase and dry
phase and are described in the following section.
Please note the following when reviewing the cycle
graph:
1. Pressure is shown in psia (absolute pressure).
GeneralGeneral
General
GeneralGeneral
Wrappid/ExpressWrappid/Express
Wrappid/Express
Wrappid/ExpressWrappid/Express
Wrappid/SFPPWrappid/SFPP
Wrappid/SFPP
Wrappid/SFPPWrappid/SFPP
SFPPSFPP
SFPP
SFPPSFPP
This is done for familiarity since the Joslyn brand
sterilizers use psia on the display. The Millennium sterilizer can be programmed to display in
either psia (absolute) or psig (gauge) by selecting
the desired units in the CHANGE MACHINE
SETUP menu. This is operator selectable but can
be locked out with an access code. Note that if
psia is selected, all cycles will display in psia,
including Gravity and Prevac cycles. If psig is
selected, all cycles will be displayed in psig,
including the Steam-Flush cycles.
Keep the relationship of psia and psig in mind
when reviewing the descriptions that follow. Note
that at sea level atmospheric pressure is about
14.7 psig while a gauge will read 0 psig. At higher
elevations, atmospheric pressure may be 10 psia
but a gauge will still read 0 psig.
2. The conditioning phase consists of a purge phase
and two or three pulses, depending on the cycle
selected. The cycle graph shows only one pulse as
“Pulse #N“. Each of the two or three pulses are
controlled in the same manner.
3. Purge phase description – the purge is factory set
for 2 minutes and will be controlled so that pressure will not exceed 45 psia nor drop below 0.5
psi above atmospheric pressure. Once the 2 minutes has timed out, the unit will exhaust to just
above atmospheric pressure and then the chamber will be flushed by cycling the S2 and S3 valves
to maintain pressure in the chamber about 0.5 psi
above atmospheric pressure, for 1.5 minutes. The
cycle graph shows 15 psia as it assumes an atmospheric pressure of 14.5 psia. In higher elevations
the pressure will be lower, but still 0.5 psi above
atmospheric pressure. Once the timer times out
the cycle progresses to the first pulse.
4. Pulse #N description – the unit charges with
steam to 132oC setting. Once reached, the unit
exhausts to just above atmosphere and then the
chamber will be flushed by cycling the S2 and S3
valves to maintain pressure in the chamber about
1.5 psi above atmospheric. Note that the flush
that occurs during the pulses will maintain chamber pressure about 1.0 psi higher that the flush
that occurs during the purge phase. After 1.5
minutes the control continues with the next pulse
until two or three pulses (depending on cycle)
occur. After the last pulse the unit will charge to
set temperature.
5. Dry phase – the steam-flush dry phase is identical
to that of a standard Gravity and Prevac cycles
except that the dry timer does not start until the
chamber reaches 4.5 psia (about 10" Hg). The
Prevac and Gravity cycles will start the dry timer
at above atmospheric pressure.
6. S2 and S3 valve cycling – during the flushes the
control will cycle the S2 and S3 valves to maintain
pressure just above atmospheric in the chamber
within 0.5 psi of set point. The control has a
debounce feature that will prevent the valves
from chattering more frequently than every 0.5
second.
2-7
764326-797
764326-797
2-8
Figure 2-4. SFPP Cycle Graph
7. S4 and S7 valve cycling – at the beginning of each
flush the S4 valve will turn on and stay on for 30
seconds to maintain a cool temperature of the
waste water. After the 30 seconds the S7 valve
will operate to maintain waste temperatures.
2.52.5
LEAK TEST CYCLELEAK TEST CYCLE
2.5
LEAK TEST CYCLE
2.52.5
LEAK TEST CYCLELEAK TEST CYCLE
NOTE: S7 solenoid valve is used to control the waste
water temperature below 140°F. S7 will turn on any time
it is necessary to cool the waste temperature.
NOTE: Components shown in parentheses ( ) denote
components used only on double door sterilizers.
1. With the display showing the Main Menu, press
the Leak Test Cycle button.
2. Connect absolute gauge to chamber. Keep ball
valve closed at this time. Close door(s) if necessary.
2.5.12.5.1
2.5.1
2.5.12.5.1
S37 (38) (Door Exhaust) will be energized for 1.5
seconds. S35 (36) (Door Seal) will pulse during this
time. After 1.5 seconds S37 (38) will be deenergized
and S35 (36) will be energized. When the pressure
behind the seal reaches 10 psig and after a 5 second
delay, the cycle will advance to the Purge phase.
2.5.22.5.2
2.5.2
2.5.22.5.2
S2 (Steam to Chamber), S3 (Fast Exhaust), S4 (Cooling Water), and S35 (S36) will be on. S7 (Vacuum &
Cooling Water) will pulse to maintain waste water
temperature. S7 is normally off. S9 (Steam to Jacket)
will be intermittent.
Activate Seal(s)Activate Seal(s)
Activate Seal(s)
Activate Seal(s)Activate Seal(s)
PurgePurge
Purge
PurgePurge
2.5.52.5.5
2.5.5
2.5.52.5.5
S3 and will go off. S2 will be on. S7 will be intermittent to maintain effluent temperature. S9 will be on
unless the pressure is greater than 27 psig, at which
time it will pulse. Verify that chamber is charging
with steam and will charge until 270.1°F is reached.
2.5.62.5.6
2.5.6
2.5.62.5.6
S2 will turn off. S3, S4 and S35 (36) will be on until
4 psig is reached. Then S4 turns off and S7 turns on.
S9 will be intermittent while controlling the jacket
temperature. Wait for 10 minutes.
NOTE: If 20 inHg is not reached in 10 minutes, the Leak
Test is aborted because of insufficient vacuum. The
leak must be fixed and Leak Test repeated.
2.5.72.5.7
2.5.7
2.5.72.5.7
S3 will turn off. S7 and S9 will be intermittent to
maintain effluent and jacket temperatures. The chamber will stabilize for 2 minutes before starting the
leak test count down.
2.5.82.5.8
2.5.8
2.5.82.5.8
S9 will be intermittent while controlling the jacket
temperature. S7 may be intermittent while controlling the temperature of the waste water. The sterilizer will time for 10 minutes. At the end of 10
minutes S1 will turn on.
2.5.92.5.9
2.5.9
2.5.92.5.9
S1, S35 (36) will be on. S7 and S9 may be intermittent
while controlling the temperature of the waste water and jacket.
ChargeCharge
Charge
ChargeCharge
Leak Test EvacuatingLeak Test Evacuating
Leak Test Evacuating
Leak Test EvacuatingLeak Test Evacuating
Leak Test StabilizingLeak Test Stabilizing
Leak Test Stabilizing
Leak Test StabilizingLeak Test Stabilizing
Leak TestLeak Test
Leak Test
Leak TestLeak Test
Air BreakAir Break
Air Break
Air BreakAir Break
2.5.32.5.3
2.5.3
2.5.32.5.3
S2 turns off. After 4 psig is reached, S4 will turn off
and S7 will turn on.
• S9 will be intermittent while controlling the jacket
2.5.42.5.4
2.5.4
2.5.42.5.4
S3 turns off. S2, S9 and S35 (36) will be on. Wait until
the pressure reaches 26 psig. Vacuum pulse will
repeat.
Vacuum PulseVacuum Pulse
Vacuum Pulse
Vacuum PulseVacuum Pulse
temperature. A vacuum will be pulled on the
chamber for 1 minute (after 4 psig is reached)
until 10 inHg is reached. After the second vacuum
pulse the cycle advances to the Charge.
Pressure PulsePressure Pulse
Pressure Pulse
Pressure PulsePressure Pulse
764326-797
2.5.102.5.10
2.5.10
2.5.102.5.10
S35 (36) will turn off. S7, S37(38) will turn on. After
the seal pressure switch opens (less than 10 psig),
the vacuum will be pulled for an additional 18
seconds.
2.5.112.5.11
2.5.11
2.5.112.5.11
S37 (38) will be on; S7 will control waste temperature and S9 will maintain jacket temperature at
approximately 270°F. S1 will turn off. A summary of
the values attained during the cycle will be printed.
Open the door(s).
2-9
Retract Seal(s)Retract Seal(s)
Retract Seal(s)
Retract Seal(s)Retract Seal(s)
CompleteComplete
Complete
CompleteComplete
Figure 2-5. Vacuum Leak Cycle Graph
2-10
764326-797
764326-797
3-1
Strainer
ST-2
Steam Supply
Figure 3-1. Piping Schematic for Health Care Century and Millennium Sterilizers
Manifold
S-35
S-9
1
PR-1
Regulator
2
Double Door
Option
S-36
M-2
Ball
Valve
97-100% Vapor Quality
297 -325 F Temp. Range
6
Safety
Valve
RV-1
3
Door
Seal
Non-Operating End
Door
Seal
CK-3
CP
Pressure
Transducer
O.E. Door Seal
Pressure Switch
PS-1
10
PG-2
Jacket
Pressure
Gauge
Chamber
Pressure
11
S-3
PG-1
Gauge
Door
Seal
Door
Seal
S-40
TR-1
S-2
5
Operating End
ST-4
Chamber RTD
PS-2
S-1
15
4
Air
Filter
F-1
JACKET
CHAMBER
Chamber
Water
CS-1
Sensor
JACKET
Jacket RTD
12
ST-3
Strainer
Steam
Trap
TR-2
CK-14
FC-2
Exhaust
Manifold
CK-6
S-37
M-3
CK-4
CK-8
14
Emergency
Exhaust
Valve
12
13
14
CK-7
16
S-38
FC-3
Double
Door
Option
WASTE
<
T
140 F
0
STEAM
50-80 psig
00
FC-1
Water
Supply
Manifold
S-4
9
EJ-1
Vacuum
Water
Ejector
HX-1
Heat
Exchanger
Drain
RTD
S-7
8
Steam
Diffuser
F-2
CK-5
W/Max 15 GPM
ST-1
Strainer
7
CK-1
CK-2
30-50 psig
0
70 F Temp
WATER
M-1
Ball
Valve
Section 3: Mechanical Components
764326-797
3-2
Steam Supply
Manifold
S-8
Figure 3-2. Piping Schematic for Scientific Century Sterilizers
6
PG-2
Jacket
Pressure
Gauge
Door Seal
CP
Pressure
Transducer
O.E. Door Seal
Pressure Switch
Chamber
Pressure
Gauge
PG-1
RV-2
Chamber
Safety
Valve
Door Seal
PS-1
10
11
S-40
S-3
CK-6
FC-2
TR-1
CK-4
12
S-37
CK-8
M-3
14
Emergency
Exhaust
Valve
Exhaust
Manifold
Operating End
ST-4
14
13
S-35
S-2
CK-4
4
5
Chamber RTD
PS-2
CK-7
FC-3
16
S-38
Double
Option
S-9
JACKET
CHAMBER
Chamber
CS-1
JACKET
12
Door
Water
Sensor
CK-14
1
S-1
Air
Filter
PR-1
Regulator
2
15
CK-9
Jacket RTD
ST-3
Strainer
F-1
Strainer
Steam
Trap
TR-2
ST-2
S-36
Double Door
Option
3
M-2
Ball
Valve
Safety
Valve
RV-1
Non-Operating End
CK-3
WASTE
<
T
140 F
0
97-100% Vapor Quality
00
297 -325 F Temp. Range
Door
Seal
Door
Seal
STEAM
50-80 psig
FC-1
Exchanger
Drain
Water
Supply
Manifold
S-4
9
EJ-1
Vacuum
Water
Ejector
HX-1
Heat
RTD
S-7
8
Steam
Diffuser
F-2
CK-5
W/Max 15 GPM
ST-1
Strainer
7
CK-1
CK-2
30-50 psig
0
70 F Temp
WATER
M-1
Ball
Valve
3-3
764326-797
Figure 3-5. Single Door Upper Level Piping Components
3-4
764326-797
TP RTD
CS1 Chamber
Water Sensor
ST4 Chamber
Drain Screen
PS1 Pressure
Switch
Exhaust
Manifold
CK14 Check Valve
TP RTD
HX1 Heat Exchanger
ST3 Strainer
TR2 Jacket
Trap
CK3 Check
Valve
FC1
Early Production
Units Only
Water Supply
Manifold
ST1 Strainer
FC1
Later Production
Units Only
EJ1 Ejector
M1 Ball Valve
W
CK2 Check ValveCK1 Check Valve
Waste Funnel
Figure 3-6. Single Door Lower Level Piping Components
3-5
764326-797
M2 Ball Valve
PR1 Pressure Regulator
RV1 Steam Valve
ST2 Strainer
S36 Solenoid Valve
PG2 Jacket
Pressure Gauge
PG1 Chamber
Pressure Gauge
PT Pressure
Transducer
F1 Air Filter
Figure 3-7. Double Door Upper Level Piping Components
3-6
764326-797
M3 Ball Valve
Steam Supply Manifold
Figure 3-8. Double Door Lower Level Piping Components
3-7
764326-797
Section 4: Electrical Components
4.14.1
CENTURY CONTROL THEORY OFCENTURY CONTROL THEORY OF
4.1
CENTURY CONTROL THEORY OF
4.14.1
CENTURY CONTROL THEORY OFCENTURY CONTROL THEORY OF OPERATIONOPERATION
OPERATION
OPERATIONOPERATION
The Century series sterilizer uses a control made up
of the following sub-sections:
1. Main Control
2. Display
• Operating End
• Non Operating End
3. Analog Devices
4.1.14.1.1
4.1.1
4.1.14.1.1
The Main Control is mounted behind the sterilizer
access door, the Display Module is mounted on the
access door and swings out with the door when
opened. Analog devices are located in the piping.
Connections between these items are by quick disconnect cables. The only hard wiring involved in the
sterilizer is for the customer’s 120 VAC power connection.
Refer to schematic 146657-782, 146657-867, and
146657-781 throughout the following:
Main ControlMain Control
Main Control - box has an access door fastened with
Main ControlMain Control
1/4 turn screws. Consists of the following:
4.1.24.1.2
4.1.2
4.1.24.1.2
Main ControlMain Control
Main Control
Main ControlMain Control
Incoming Power Terminal BlockIncoming Power Terminal Block
Incoming Power Terminal Block
Incoming Power Terminal BlockIncoming Power Terminal Block
4.1.54.1.5
4.1.5
4.1.54.1.5
Interfaces incoming 120 VAC, Power Supply, CPU
board, I/O board, and all external components. The
Connector Board contains only traces and connectors. There are no fuses or serviceable components
on the board.
4.1.64.1.6
4.1.6
4.1.64.1.6
Receives filtered 120 VAC from J15A on the Connector Board at J3A on the Power Supply.
• Outputs on J3B are - 15V, +12V, +15V, and +5V.
• Outputs on J2 and J4 are +24V. The J2 powers the
• There are 2 fuses on the power supply, Fl and F2.
• The power supply is a switching type. Should an
Connector BoardConnector Board
Connector Board
Connector BoardConnector Board
Power SupplyPower Supply
Power Supply
Power SupplyPower Supply
control box fan motor.
These fuses are on the incoming AC side of the
power supply. If either fuse fails, it is due to a
catastrophic internal failure of the power supply
(eg, shorted transformer). The fuse does not blow
due to an output overload or short circuit. If the
fuse fails, the power supply is bad.
output overload occur (eg, short circuit on the
output), the power supply automatically drops
voltage to prevent power supply and circuit damage. Recovery after a fault is automatic on power
up or power down.
Three position block for connection of the 120 VAC
incoming power. Power is fed into the box through
a knock-out on the side or top of the control box.
Block is located in the upper left hand corner of the
control box.
4.1.34.1.3
4.1.3
4.1.34.1.3
ON/OFF switch to control power from terminal
block to line filter. A parallel tap off the power
switch feeds unfiltered 120 VAC to J13 on the Connector Board. This unfiltered 120 VAC is fed to P9
plug to power the steam generator. This is the only
device on the Century sterilizer using unfiltered AC
power.
4.1.44.1.4
4.1.4
4.1.44.1.4
Feeds fused (F3), filtered 120 VAC to J14 on the
Connector Board. All components on the Century
sterilizer, except for the feed to the steam generator,
use filtered AC power.
Power SwitchPower Switch
Power Switch
Power SwitchPower Switch
Line FilterLine Filter
Line Filter
Line FilterLine Filter
4.1.74.1.7
4.1.7
4.1.74.1.7
The CPU board is made up of the following: CPU
8OC186EC high integration processor (U1), Flash
Memory, A/D Converter, RAM Memory and Battery Back-up.
4.1.7.14.1.7.1
4.1.7.1
4.1.7.14.1.7.1
The block layout of the CPU (U1) is shown in Figure
4-1. This design allows the unit to be connected to
various computer devices, such as floppy disk drives,
modems and desktop or portable personal computers. Unit now has the ability to be programed by a
floppy disk, serial interface from a modem or personal computer.
CPU BoardCPU Board
CPU Board
CPU BoardCPU Board
CPU ChipCPU Chip
CPU Chip
CPU ChipCPU Chip
4-1
764326-797
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