Midmark M3 Steam Sterilizer Parts Manual

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

Model Numbers:

Service and

Parts Manual

M3 Steam Sterilizer

M3

-001 thru -004

-040 thru -042

004-0520-00 (6/27/18)

SA104100-1i

ii© Midmark Corporation 2010 SF-1889 [Revised: 7/12/17]

Table of ContentsTable of Contents

GENERAL INFORMATION

Symbols .......................................................... iv

Ordering Parts ................................................ iv

Serial Number Location .................................. iv

Specications .................................................. v

Scheduled Maintenance ................................. vi

Cycle Parameters ...........................................vii

TROUBLESHOOTING

Error Codes ................................................. A-2

Power Up / Select Cycle Mode .................. A-15

Close Mode ............................................... A-16

Heat Up Mode ........................................... A-17

Sterilization Mode ...................................... A-18

Vent Mode ................................................. A-19

Open Mode ................................................ A-20

Dry Mode ................................................... A-21

TESTING & REPAIR

Activating Service Diagnostics .................... B-2

Test Selection Screen .................................. B-3

Vent Valve Test ............................................ B-4

Door Motor Test ........................................... B-6

Water Pump Test / Priming Instructions ...... B-9

Boiler Test .................................................. B-12

Dry Heater Test.......................................... B-14

Condensation Heater Test ......................... B-16

Door / Tray Position Switch

Display Screen .......................................... B-18

Chamber Pressure Display Screen ........... B-19

Temperature Display Screen ..................... B-20

Water Level / External Tank

Sensor Display Screen .............................. B-21

Error Code Display Screen ........................ B-22

Key Test Display Screen............................ B-23

Five Point Leak Test .................................. B-24

Temperature Sensor Resistance Test ....... B-25

Inlet Switch Module Test ............................ B-27

General InfoSection A

Section E

Section B

Section C

Section D

(*) Indicates multiple pages due to model / serial number break(s).

ACCESS PROCEDURES

Top Cover Removal / Installation ................. C-2

WIRING DIAGRAMS

M3 ................................................................ D-2

EXPLODED VIEWS / PARTS LIST

Components Overview ................................ E-2

Main Enclosure ............................................ E-3

Main Components ............................................ E-4

Door Tray Latch Mechanism ....................... E-5*

Boiler Assembly ........................................... E-6

Pump Solenoid Assembly ............................ E-7

Reservoir Assembly ..................................... E-8

PC Board Assembly..................................... E-9

Switch Harness Assembly ............................. E-10

Plumbing and Tubing Components ............E-11

Door / Tray Accessory ............................... E-12

External Condensing Tank......................... E-13

Shipping Packaging ................................... E-14

Label Location ........................................... E-15

Section B

TESTING & REPAIR (CONTINUED...)

Photo Interrupter ........................................ B-28

iii© Midmark Corporation 2010 SF-1889 [Revised: mo/dd/yr]

General InformationGeneral Information

WARNING

Indicates a potentially hazardous situation which

could result in serious injury if not avoided.

Equipment Alert

Indicates a potentially hazardous situation which

could result in equipment damage if not avoided.

Caution

Indicates a potentially hazardous situation which may

result in minor or moderate injury if not avoided. It

may also be used to alert against unsafe practices

Symbols

Indicates the function / component is working properly.

No action required.

Indicates the function / component is working,

but a problem exists.

Indicates the function is not working at all, or that the

component is faulty.

Ordering Parts

The following information is required when ordering parts:

 • Serialnumber&modelnumber

 • Partnumberfordesiredpart

[Refer to Section E: Exploded Views & Parts Lists]

Non-warranty parts orders may be faxed to Midmark using

the Fax Order Form in the back of this manual.

For warranty parts orders, call Midmark’s Technical Service

Department with the required information.

Hours:8:00amto5:00p.m.EST(MondaythruFriday)

Phone:1-800-Midmark(1-800-643-6275)

Serial Number Location

Note

Used for special instructions or additional information.

SA103100i

Serial Number VXXXXXX

VXXXXXX

Thesymbolsbelowmaybeusedinthismanualtorepresent

theoperationalstatusofsterilizerfunctionsandcomponents.

iv© Midmark Corporation 2010 SF-1889 [Revised: 7/2/18

General Information

Weights, Dimensions, Electrical Specications

Note

To ensure unit is properly grounded, it must be connected to a

matching grounded, dedicated, correctly polarized receptacle.

Electrical Ratings:

115 VAC Unit

CircuitRequirements*......................120VAC,50/60Hz,12amp

Max.PowerConsumption................1400watts

230 VAC Unit

CircuitRequirements*.....................230VAC,50/60Hz,6amp

Max.PowerConsumption...............1400watts

*Power source must have over voltage limits less than 1500 watts from

mains to ground. (Installation Category ll in accordance to IEC 664)

Fuse Ratings:

115 VAC Unit

F1....................................................15Amp,250V,FastActing,1/4"x11/4"

F2....................................................0.25Amp,250V,Slo-blo,1/4"x11/4"

230 VAC Unit

F1....................................................8Amp,250V,FastActing,5x20mm

F2....................................................0.125Amp,250V,Slo-blo,5x20mm

Certications:

ASMEBoiler&PressureVesselCode,SectionVIII,Division1

CanadianRegistrationNumberAvailable

UL61010-12ndEdition

IEC61010-2-0401stEdition

CAN/CSA-C22.2No.61010-12ndEdition

FCCPart15,Sub-partB

Physical Dimensions:

OverallLength(A):................................21in.(53.3cm)

OverallWidth(B):..................................17.8in.(45.2cm)

OverallHeight(C):.................................6.9in.(17.5cm)

ShippingCartonLength:.......................25in.(63.5cm)

ShippingCartonWidth:.........................22in.(55.9cm)

ShippingCartonHeight:........................16.6in(42.2cm)

CounterArea:.......................................24in.(61cm)deepx22in.(55.9cm)wide

ChamberVolume:.................................0.49gal(1.8liter)

Weight:

EmptyReservoir:.........................................71lbs.(32.2kg)

FullReservoir:.............................................80lbs(36.3kg)

WithShippingCarton:..................................80lbs(36.3kg)

Water Reservoir Capacity:........................1.20gal(4.5liter)

Pressure Relief Valve Setting:....................40PSI(275.8kPA)

Chamber Pressure:

@270°F(132°C).................................27.1PSI(186.2kPA)

SA105900i

C

A

B

v© Midmark Corporation 2010 SF-1889 [Revised: mo/dd/yr]

Scheduled Maintenance / Cleaning Chart

Interval Inspection / Service Description

Periodically

Cleaning

Cleanexternalsurfaces,tray,&chamberwithmildsoapanddistilledwater.Wipedry.

Cleandoorgasket&matingsurfacewithadampcloth.

Inspectgasketfordamage,replacegasketifnecessary.

Emptywaterfromcondensingtank.Cleantankwithdilutedbleachsolution(1/4 cup bleach : 1 gallon water)&abrush.

Rinsetank,thenlltotheminimumwaterlevelindicatorline.

ObviousDamage Visuallyinspectcomponentsfordamagethatcouldcauseproblemsduringoperationorunsafeoperation.

Drain/RellReservoir Usingthedrainhose,drainallwaterfromthereservoir.

Rellreservoirwithdistilledwater.

Hardware Allfastenersmustbepresentandfastenedsecurely.

ElectricalSystem

Inspectpowercordandallwiringfordamage.

Besureallelectricalconnectionsaretight.

Monthly Cleaning

Remove&cleanlterusingamildsoapsolution&abrush,Placeinultrasoniccleanerifnecessary.

Rinsewithdistilledwater.

Cleancondensingtanklevelsensorswithmildsoapsolution.

Wipedry.

DateofService:

Location:

ServiceTechnician:

ModelNumber:

SerialNumber:

Notes:

vi© Midmark Corporation 2010 SF-1889 [Revised: mo/dd/yr]

CYCLE

STERILIZATION

PARAMETERS

DRY TIME ITEMS TO BE STERILIZED

Unwrapped

Temperature:

270°F(132° C)

Pressure:

27.1psi(186kPa)

Time:

3:30Minutes

Time:

25Minutes

•DentalInstruments/handpiecesloose

onatray.

•Otheritemsmanufacturersrecommendfor

exposureat270°F(132°C),looseonatray.

Pouches

Temperature:

270°F(132° C)

Pressure:

27.1psi(186kPa)

Time:

5:30Minutes

Time:

30Minutes

•DentalInstruments/handpiecesinpouches,

wrapped,orinawrappedcassette.

•Otheritemsmanufacturersrecommendforexposure

at 270°F(132°C),inpouches,wrapped,orina

wrappedcassette.

Low Temp

Temperature:

250°F(121° C)

Pressure:

15.0psi(104kPa)

Time:

20:00Minutes

Time:

50Minutes

•Rubberorplasticdentalitems,dentalinstruments

/handpieceslooseonatray,inpouches,wrapped,

orinawrappedorunwrappedcassette.

•Otheritemsmanufacturersrecommendforexposureat

250°F(121°C),looseonatray,inpouches,wrapped,

orinawrappedorunwrappedcassette.

Cycle Parameters

Thetablebelowshowsthetemperature/pressure/timeparametersforthepre-setcycles.

(ATTENTION: Before sterilizing any item in the M3, refer to Loading the Tray in the user's guide).

A-1© Midmark Corporation 2010 SF-1889 [Revised: 11/18/14]

Section ASection A

Troubleshooting

Mode / System

Error Codes Troubleshooting .............A-2

Power Up / Select Cycle Mode ........ A-15

Close Mode .....................................A-16

Heat-Up Mode .................................A-17

Sterilization Mode ............................A-18

Vent Mode .......................................A-19

Open Mode ...................................... A-20

Dry Mode .........................................A-21

Mode / System

Error Codes Troubleshooting .............A-2

Power Up / Select Cycle Mode ........ A-15

Close Mode .....................................A-16

Heat-Up Mode .................................A-17

Sterilization Mode ............................A-18

Vent Mode .......................................A-19

Open Mode ...................................... A-20

Dry Mode .........................................A-21

A-2© Midmark Corporation 2010 SF-1889 [Revised: 7/2/18]

Error Codes

Ifasystemmalfunctionisdetectedduringacycle,anumericerrorcodewillappearonthe

displaypanel.Eachdigitintheerrorcodeprovidesinformationabouttheproblemthatoccurred.

Error Codes

C010: (System Power Loss) .....................A-3

C060: (System Hardware) .......................A-4

C100 Series: (Stop Key) .............................A-4

C230 Series: (Water Low) .....................A-4

C320 Series: (Door Closed) ...................A-5

C350 Series: (Tray Switch) ....................A-6

C380 Series: (Door Open) ..................... A-6

C440 Series: (Ext. Condensing Tank Full) .A-7

C530 Series: (Steam Temp. Low) ............ A-7

C540 Series: (Steam Temp. High) ...........A-8

C560 Series: (Steam Temp. Hardware).....A-8

C570 Series: (Steam Temp. Over limit) .....A-8

C630 Series: (Pressure Low) .................A-9

C640 Series: (Pressure High) .................A-9

C660 Series: (Pressure Hardware) .......... A-10

C670 Series: (Pressure Over limit) ........A-10

C760 Series: (Boiler Temp. Hardware) ...A-10

C770 Series: (Boiler Temp. Over limit) .... A-11

C860 Series: (Dryer Temp. Hardware) .... A-11

C870 Series: (Dryer Temp. Over limit) ....A-12

C880 Series: (Dryer Hi-Limit Open) .......A-12

C980 Series: (Boiler Hi-Limit Open) .......A-12

Instruments Not Drying .................... A-12

Biological Strip Error ........................ A-13

Maintenance Message ....................A-14

Does Not Print (Optional Printer) ..... A-14

Chamber Fills With Water ................A-14

Error Codes

C010: (System Power Loss) .....................A-3

C060: (System Hardware) .......................A-4

C100 Series: (Stop Key) .............................A-4

C230 Series: (Water Low) .....................A-4

C320 Series: (Door Closed) ...................A-5

C350 Series: (Tray Switch) ....................A-6

C380 Series: (Door Open) ..................... A-6

C440 Series: (Ext. Condensing Tank Full) .A-7

C530 Series: (Steam Temp. Low) ............ A-7

C540 Series: (Steam Temp. High) ...........A-8

C560 Series: (Steam Temp. Hardware).....A-8

C570 Series: (Steam Temp. Over limit) .....A-8

C630 Series: (Pressure Low) .................A-9

C640 Series: (Pressure High) .................A-9

C660 Series: (Pressure Hardware) .......... A-10

C670 Series: (Pressure Over limit) ........A-10

C760 Series: (Boiler Temp. Hardware) ...A-10

C770 Series: (Boiler Temp. Over limit) .... A-11

C860 Series: (Dryer Temp. Hardware) .... A-11

C870 Series: (Dryer Temp. Over limit) ....A-12

C880 Series: (Dryer Hi-Limit Open) .......A-12

C980 Series: (Boiler Hi-Limit Open) .......A-12

Instruments Not Drying .................... A-12

Biological Strip Error ........................ A-13

Maintenance Message ....................A-14

Does Not Print (Optional Printer) ..... A-14

Chamber Fills With Water ................A-14

First Digit = Where?

Therstdigitindicatesthecomponent

orsystemwheretheproblemoccurs.

(example: 3 = door)

Example:

Second Digit = What?

Theseconddigitindicateswhat

problemorsymptomwasdetected.

(example: 8 = Open)

Third Digit = When?

Thethirddigitindicateswhen

theproblemwasdetected.

(example: 2 = Close Mode)

The table below cross-references the numeric error code with the Component, Problem, and Mode.

0=GeneralSystem 0(Blank)* 0=PowerUpMode

1=StopButton 1=PowerLoss 1=SelectCycleMode

2=WaterLevelSensor 2=Closed 2=CloseMode

3=DoorSwitch 3=Low 3=HeatUpMode

4=Ext.CondensingTank 4=High 4=SterilizeMode

5=TemperatureSensor 5=TraySwitchOpen 5=VentMode

6=PressureSensor 6=Hardware 6=OpenMode

7=BoilerTemperature 7=OverLimit 7=DryMode

8=DryerTemperature 8=Open 8=CompleteMode

9=HighLimitThermostat 9(notused) 9=Misc.

First Digit

(Component)

Second Digit

(Problem)

Third Digit

(Mode)

C382:CLOSE MODE

DOOR OPEN

*0isusedinthe100serieserrorcodes

toindicatetheSTOPkeywaspressed.

A-3© Midmark Corporation 2010 SF-1889 [Revised: 4/23/13]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

Sterilizer has no power.

Touchpad&displaydonot

work.(Switchfailureunder

probablecausewouldonlybe

onnewerstylePCboards)

Sterilizernotpluggedin. Checkpowercordconnectionsatwall

outletandonbackofsterilizer.

Securepowercordconnections.

Powerswitchturnedo. Checkpowerswitch. Turnpowerswitchon.

Nopoweratwalloutlet. Checkvoltageatwalloutlet. Resetfacilitycircuitbreaker.The

sterilizershouldbepluggedintoa

dedicated20ampcircuit.

F1fuseonPCboardis

blownoropen.

CheckF1fuseforcontinuity. Replacefuse.

Inletswitchmodulefailure.

Checkinletswitchmodule.

Referto:InletSwitchModuleTest

Performcontinuitytestoninletswitch

module.

Sterilizer has power, but

touchpad & display do

not work.

Touchpad&displaydonot

work.

F2fuseonPCboardis

blownoropen.

CheckF2fuseforcontinuity. Replacefuse.

RibboncablefromJ15on

mainPCboardtoJ3on

displayPCboardislooseor

disconnected.

CheckribboncableconnectionsatJ15

onmainPCboard&J3ondisplayPC

board.

Secureribboncableconnections.

J15/J3ribboncablehas

openlead(s).

CheckJ15/J3ribboncablefor

continuity.

Replaceribboncable.

MainPCboardis

malfunctioning.

Checkfor5VDCbetweenTP1&TP4,

andonJ15acrosspins1&2onmainPC

board.

If5VDCisnotpresentatthese

points,replacemainPCboard.

Displayisblankorundined

charcters&internittentbeeps.

DisplayPCboardis

malfunctioning

Checkfor5VDCbetweenR1&J1on

displayPCboard.

If5VDCisnotpresent,replace

displayPCboard.

Displayworksbuttouch

paddoesn't.

RibboncablefromJ2to

touchpadisdisconnected.

CheckJ2Plugconnection. AssureJ2Plugpinsarealignedand

connectedsecurely.

J2ribboncabletotouchpad

hasopenlead(s).

CheckcontinuityofJ2ribboncable

andtouchpad.

Replacetouchpadandribboncable

assembly.

Unit has power, but the

door is not open in Select

Cycle Mode, and there is

no error code associated

with this condition.

Displayisnormal. Doormotorconnectingrodis

broken.

Removetopcoverandverifythatthe

doormotorconnectingrodisintact.

Replacedoormotorconnectingrod.

C010

C010:POWERUPMODE

SYSTEMPOWERLOSS

…

ITEMSNOTSTERILE

PUSHSTOPTORESTART

Powerinterruptionduringany

modeinwhichsterilization

maybecompromised.

Userturnedpoweroduring

ChamberClose,HeatUp,or

SterilizationMode.

Askquestionsaboutusagepatterns Trainuseronproperoperation.

Unitpluggedintoanon

dedicated,20ampcircuit.

Checkifunitispluggedintoadedicated

20ampcircuit.

Connectunittoadedicated20amp

circuit.

Someotherevent(suchasa

storm,apoweroutage,ect.)

interruptedpower.

Askquestionsaboutrecentelectrical

events(storms,outages,ect.).

Ifthisisacommonoccurrence,iso-

latefromsourceofelectricalinterfer-

ence.

A-4© Midmark Corporation 2010 SF-1889 [Revised: 8/16/13]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C060

C060:POWERUPMODE

SYSTEMHARDWARE

…

TURNPOWEROFF/ON

Atpower-up,memoryor

otherhardwarecannotbe

properlyreadorinitialized.

(Ifoccational)powerhas

beenrapidlycycledothen

onagainbyuser(possiblyto

clearanothererror).

Askquestionsaboutusagepatterns. Trainuseronproperoperation.

(Ifoccational)powerhas

beenrapidlycycledothen

onagainbyanelectrical

interruption(suchasastorm,

poweroutage,ect.).

Checkifsterilizerispluggedintoadedi-

cated20ampcircuit.

Connectunittoadedicated20ampcircuit.

Askquestionsaboutrecentelectrical

events.

Ifthisisacommonoccurrence,isolatefrom

sourceofelectricalinterference.

(Ifpersistent)damaged

componentonPCboard.

Turnpowerswitcho.Wait20seconds,

andturnpowerbackon.Repeatseveral

timesinarow.

ReplacePCboardifnecessary.

C099

C099:MISCMODE

??? ???

…

UNPLUG/RE-PLUGUNIT

Anerrorthatcanoccur

whileconnectedtoaPC,

ect.Thiserrorwillneverbe

causedbynormalusage.

Codewasgeneratedatthe

factoryduringtestingwhen

anexternaldevicesuchasa

PCorlaptopwasconnected

tothesterilizermainPC

board.

Nochecknecessary. ContactMidmark'sTechnicalService

Department.

C102: Close Mode

C103: Heatup Mode

C104: Sterilize Mode

C105: Vent Mode

C106: Open Mode

C10X:XXXXMODE

STOPKEY

…

ITEMSNOTSTERILE

PUSHSTOPTORESTART

TheSTOPkeywassensed

duringacycle.

UserpressedtheSTOPkey

duringthecycle.

Askquestionsaboutusagepatterns. Trainuseronproperoperation.

PressSTOPkeytoclearerror.

Note:Itmaybenecessarytowaitbriey

(upto1minute)whilechamberpressure&

temperaturedissipate.

Membraneswitch(touchpad)

isdamaged.

Performkeytest.Referto:

Service Diagnostics Key Test.

Replacemembraneswitch.

C232: Close Mode

C232:CLOSEMODE

WATERLOW

…

ITEMSNOTSTERILE

PUSHSTOPTORESTART

Reservoirwaterlevel

sensordetectsthesupply

waterislow.

Reservoirwaterlevellow. Checkwaterlevelinreservoir. Fillreservoirwithdistilledwater.

Faultywaterlevelsensor.

Referto:I/O Test Water Level / External

Tank Display Screen.

Replacewaterlevelsensor.

Levelsensorconnection

looseordisconnected,or

brokenwires.

ChecklevelsensorconnectionatJ13on

PCboard,andrelatedleads

AssureJ13plugconnectionissecurely

connectedandrelatedwiresarenot

damaged.

MalfunctioningPCboard. Runservicediagnostics,andcheckfor

4.5to5.0VDCatJ13pins1&2onPC

boardwhenlevelsensorstateisbeing

displayedonLCD.

Ifnovoltage,replacePCboard.

A-5© Midmark Corporation 2010 SF-1889 [Revised: mo/dd/yr]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C321: Select Mode

C326: Open Mode

C32X:XXXXMODE

DOORCLOSED

…

PUSHSTOPTORESTART

DoorMotorOpenSwitchis

not

sensedasbeingopenwhen

shouldbe.

Somethingoutsideoftheunit

isphysicallyinterferingwith

themovementofthedoor.

Verifythatthereisnothingoutsideofthe

unitstoppingmovementofthedoor.

Removeanyexternalimpedimenttodoor

movement.

Thedoormotorcamisnot

makingcontactwiththeDoor

OpenSwitch.

Removetopcover,putunitintoService

Diagnostics,andverifythatthedoormotor

isnotbrokenandphysicallyattemptsto

operate.

Replacedoormotor.

Doorwillnotopenbecause

thereistoomuchpressurein

chamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensing

tank.

Unkinkplastictube,removeobstruction,or

replace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsand

checkventvalveoperation.

Cleanorreplaceventvalve.

PutunitintoServiceDiagnostics,and

verifythatthePCboardisenergizingvent

valvewhenappropriate.

ReplacePCboard,ifnecessary.

PressureInterlockAssy.is

stuckopen.

Verifythatchamberpressureiszeroand

thencheckthestateofthepressure

interlockassy.

Replacepressureinterlockassy.

DoorOpenSwitchisstuckin

theclosedstate.

PutunitintoServiceDiagnostics,and

verifythattheDoorOpenSwitchis

operatingnormally.

Replacedoorswitch/harnessassy.

Somethinginsidethe

chamberisphysically

interferingwiththemovement

ofthedoor.

Verifythatthereisnothingjammedinside

thechamberstoppingmovementofthe

doorbymanuallyopeningthedoor.

Turnpowero,removetopcover,and

purgechamberofpressure.Removepivot

pinfromdoormotorconnectingrodand

pivotbracket,thenmanuallyopenthe

door.Removejammedinstruments.

PCBoardisnotenergizing

doormotor.

PutunitintoServiceDiagnosticsandverify

thatthePCboardisenergizingdoormotor

whenappropriate.

ReplacePCboard,ifnecessary.

A-6© Midmark Corporation 2010 SF-1889 [Revised: 8/16/13]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C352: Close Mode

C353: Heatup Mode

C354: Sterilize Mode

C355: Vent Mode

C35X:XXXXMODE

TRAYSWITCHOPEN

…

ITEMSNOTSTERILE

PUSHSTOPTORESTART

TraySwitchnotsensedas

fullyclosedwhenitshouldbe.

Traynotproperlystaged

wheninsertedintochamber.

Askquestionsaboutthewaytheuserloads

thetray.

Trainusertofullystagethetraybefore

attemptingtostartacycle.

Trayhandle'splastickeyis

brokeno.

Ensurethatleftlowersideofplastictray

handlehasa"key"thatsticksoutaboutan

inch.

Replacebottomdoortrayhandle.

Trayswitchisnotpositioned

correctly,andisnotsensing

presenceoftray.

UseServiceDiagnosticstoverifythatthe

trayswitchactuateswhenthetrayinitially

crestsbumpinthetusk.

Adjustthetrayswitchbracket.

Trayswitchisfaulty. UseServiceDiagnosticstoensurethatthe

switchoperatescorrectly.

Replacedoorswitch/harnessassy.

C382: Close Mode

C383: Heatup Mode

C384: Sterilize Mode

C385: Vent Mode

Continue on Next

Page...

C38X:XXXXMODE

DOOROPEN

…

ITEMSNOTSTERILE

PUSHSTOPTORESTART

DoorMotorClosedSwitch

hasbeenactivated,stopping

thedoormotor,buttheDoor

ClawSwitchisnotsensed

asbeingclosed.

Somethingoutsideofthe

unitisphysicallyinterfering

withthemovementofthe

door.

Verifythatthereisnothingoutsideofthe

unitstoppingmovementofthedoor.

Removeanyexternalimpedimenttodoor

movement.

Thedoormotorcamisnot

makingcontactwiththe

DoorClosedSwitch.

Removetopcover,putunitintoService

Diagnostics,andverifythatthedoormotor

isnotbrokenandphysicallyattemptsto

operate.

Replacedoormotor.

Doorwillnotclosebecause

thereistoomuchpressure

inchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank.

Unkinkplastictube,removeobstruction,or

replace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

PutunitintoServiceDiagnostics,andverify

thatthePCboardisenergizingventvalve

whenappropriate.

ReplacePCboard,ifnecessary.

Doormotorbracketnot

adjustedproperly.

Verifythat,whenthedoormotorisinthe

closedposition,thereisenoughthrowto

physicallyclosethedooralltheway.

Ifthereisnotenoughthrow,adjustthe

doormotormoretowardtherearofthe

unit.

DoorClosedSwitchisstuck

intheclosedstate.

PutunitinServiceDiagnostics,andverify

thatthedoorclosedswitchisoperating

normally.

Replacedoorswitch/harnessassy.

A-7© Midmark Corporation 2010 SF-1889 [Revised: 8/16/13]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C382: Close Mode

C383: Heatup Mode

C384: Sterilize Mode

C385: Vent Mode

(Continued)

DoorMotorClosedSwitch

hasbeenactivated,stopping

thedoormotor,buttheDoor

ClawSwitchisnotsensed

asbeingclosed.

Somethinginsidethe

chamberisphysically

interferingwiththemove-

mentofthedoor.

Verifythatthereisnothingjammedinside

thechamberstoppingmovementofthe

door.

Removeanyjammedinstruments.

PCBoardisnotenergizing

doormotor.

PutunitintoServiceDiagnosticsandverify

thatthePCboardisenergizingdoormotor

whenappropriate.

ReplacePCboard,ifnecessary.

C442: Close Mode

C442:CLOSEMODE

EXTERNALTANKFULL

…

PUSHSTOPTORESTART

Theexternaltankwaterlevel

sensordetectedwaterlevel

intheexternaltankistoo

hightoperformnextcycle.

Externalcondensingtankis

full.

Visuallychecktanktoseeiffull. Emptyexternalcondensingtank..

Corrosiononcondensing

tanklevelsensors.

Visuallyinspectexternalcondensingtank

waterlevelsensors.

Cleansensors,coppercoil,andinsideof

condensingtankwithacleancloth.

Levelsensorsorattached

wiringdamaged.

Checklevelsensorsandattachedwiring

fordamage.

Replacelevelsensorsand/orwiring.

Systemisnotprocessing

dataproperly.

GointoServiceDiagnosticstoverifysensor

operation.

Referto:I/O Test Water Level / External

Tank Display Screen.

C533: Heatup Mode

C534: Sterilize Mode

C53X:XXXXMODE

STEAMTEMPLOW

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Duringheatupmode,

sterilizationmodeisnot

reachedwithin15minutes.

DuringSterilizationMode,

steamtemperaturedropsto

apointlessthanorequalto

thesetpointchosenduring

SelectCycleMode.

Lowwaterinreservoir Checkwaterlevelinreservoir. Fillreservoirwithdistilledwater.

Lowwaterinreservoirnot

caughtbyaC23xerror.

Referto:I/O Test Water Level / External

Tank Display Screen.

Replacewaterlevelsensor.

Waterpumpnotprimed.

Referto:

Water pump priming instructions.

Primewaterpump.

Steamleakage.

Referto:Five point leak check. Repairsteamleak.

Chambertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Cleanorreplacechambertemperature

sensor.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

Boilernotfunctioning

properly.

Referto:

Service Diagnostics Boiler Test.

Replaceboilerifnecessary.

PCBoardisnotprocessing

temperatureinput(s)properly.

Verifyboilerandchambertemperature

sensorsareworkingproperly.

ReplacePCboardifnecessary.

Defectivecheckvalvein

waterpump.

Checkforlargeairpocketformingintubing,

thatmovesfromtheboilertowaterpump.

Replacewaterpump.

A-8© Midmark Corporation 2010 SF-1889 [Revised: 11/18/14]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C540: Power Up Mode

C544: Sterilize Mode

C546: Open Mode

C54X:XXXXMODE

STEAMTEMPHIGH

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

DuringSterilizationMode,

steamtemperaturerisestoa

pointgreaterthanorequalto

thesetpoint+8°F.

Steamnotbeingreleased

fromchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank.

Unkinkplastictube,removeobstruction,

orreplace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

Chambertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Cleanorreplacechambertemperature

sensor.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

PCBoardisnotprocessing

temperatureinput(s)properly.

Verifyboilerandchambertemperature

sensorsareworkingproperly.

ReplacePCboard,ifnecessary.

C560: Power Up Mode

C561: Select Mode

C562: Close Mode

C563: Heatup Mode

C564: Sterilize Mode

C565: Vent Mode

C566: Open Mode

C567: Dry Mode

C568: Complete Mode

C56X:XXXXMODE

STEAMTEMPHARDWARE

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

A/DconverteronPCBoard

reportsasteamtemperature

inputvalueoutsidethe

normallimits.

Chambertemperaturesensor

disconnectedfromPCBoard.

Checkchambertemperaturesensorwire

connectionatJ11onPCboard.

Securewireconnection.

Chambertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Cleanorreplacechambertemperature

sensor.

PCBoardisnotprocessing

temperatureinput(s)properly

Verifychambertemperaturesensoris

workingproperly.

ReplacePCboard,ifnecessary.

C570: Power Up Mode

C571: Select Mode

C572: Close Mode

C573: Heatup Mode

C574: Sterilize Mode

C575: Vent Mode

C576: Open Mode

C577: Dry Mode

C578: Complete Mode

Continue on Next

Page...

C57X:XXXXMODE

STEAMTEMPOVERLIMIT

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Steamtemperature

greaterthan285°F

(140.6° C)

Steamnotbeingreleased

fromchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank

Unkinkplastictube,removeobstruction,

orreplace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

A-9© Midmark Corporation 2010 SF-1889 [Revised: 11/18/14]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C570: Power Up Mode

C571: Select Mode

C572: Close Mode

C573: Heatup Mode

C574: Sterilize Mode

C575: Vent Mode

C576: Open Mode

C577: Dry Mode

C578: Complete Mode

(Continued)

C57X:XXXXMODE

STEAMTEMPOVERLIMIT

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Steamtemperature

isgreaterthan285°F

(140.6° C)

Chambertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Cleanorreplacechambertemperature

sensor.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

PCBoardisnotprocessing

temperatureinput(s)properly.

Verifyboilerandchambertemperature

sensorsareworkingproperly.

ReplacePCboard,ifnecessary.

C630: Power Up Mode

C631: Select Cycle

Mode

C633: Heatup Mode

C636: Open Mode

C637: Dry mode

C638: Complete Mode

C63X:XXXXMODE

PRESSURELOW

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

DuringHeatupMode,the

rstventvalveopen

operationhastooccur

within10minutes.

Lowwaterinreservoir Checkwaterlevelinreservoir. Fillreservoirwithdistilledwater.

Lowwaterinreservoirnot

caughtbyaC23xerror.

Referto:I/O Test Water Level / External

Tank Display Screen.

Replacewaterlevelsensor.

Waterpumpnotprimed.

Referto:

Water pump priming instructions.

Primewaterpump.

Steamleakage.

Referto:Five point leak check. Repairsteamleak.

Chambertemperaturesensor

notfunctioningproperly.

Referto:Temperature Sensor Resistance

Test.

Cleanorreplacechambertemperature

sensor.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

Boilernotfunctioning

properly.

Referto:

Service Diagnostics Boiler Test.

Replaceboiler,ifnecessary.

Pressuretransducertubing

damagedordisconnected.

Inspectcopper&neoprenetubingfrom

chambertopressuretransducer.

Repairorreplacetubing,ifnecessary.

PCBoardmalfuctioning. Varifythattherearenootherwaysthat

pressurecouldnotbetransmittedfrom

chambertopressuretransducer.

ReplacePCboard,ifnecessary.

Defectivecheckvalvein

waterpump.

Checkforlargeairpocketformingintubing,

thatmovesfromtheboilertowaterpump.

Replacewaterpump.

Pressuretransducerportin

chamberblocked

Checkforobstruction. Removeobstruction.

Photointerrupterobstructed.

Referto: Photo Interrupter Clearobstructionandclean.Verifyhard-

wareisworkingbacktoprocessor.

A-10© Midmark Corporation 2010 SF-1889 [Revised: 11/18/14]

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C641: Select Mode

C642: Close Mode

C645: Vent Mode

C646: Open Mode

C647: Dry Mode

C648: Complete Mode

C64X:XXXXMODE

PRESSUREHIGH

…

ITEMSNOTSTERILE

PUSHSTOPTORESTART

Thegaugepressureinthe

chamberisgreaterthan

2.0PSIg(13.8kPag)when

itshouldbenearzero.

Steamnotbeingreleased

fromchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank.

Unkinkplastictube,removeobstruction,

orreplace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

Pressureisbeingread

abnormallyhighby

pressuretransducer.

Referto:Service Diagnostics

Chamber Pressure Display Screen.

ReplacePCboard,ifnecessary.

C660: Power Up Mode

C661: Select Mode

C662: Close Mode

C663: Heatup Mode

C664: Sterilize Mode

C665: Vent Mode

C666: Open Mode

C667: Dry Mode

C668: Complete Mode

C66X:XXXXMODE

PRESSUREHARDWARE

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

A/Dconverterreportsa

gaugepressureinputvalue

outsidethenormallimits.

Electricalinterruption. Iferrorisintermittant. None.Ignorecode.

PCBoardmalfunctioning. Iferrorispersistant,thenaproblemexist. ReplacePCboard,ifnecessary.

C670: Power Up Mode

C671: Select Mode

C673: Heatup Mode

C674: Sterilize Mode

C675: Vent Mode

C67XXXXXMODE

PRESSUREOVERLIMIT

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Gaugechamberpressure

greaterthan40PSI

(275.8kPa)

Steamnotbeingreleased

fromchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank

Unkinkplastictube,removeobstruction,

orreplace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

Chambertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Cleanorreplacechambertemperature

sensor.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

PCBoardisnotprocessing

temperatureinput(s)properly.

Verifytemperaturesensorsareworking

properly.

ReplacePCboard,ifnecessary.

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C760: Power Up Mode

C761: Select Mode

C762: Close Mode

C763: Heatup Mode

C764: Sterilize Mode

C765: Vent Mode

C766: Open Mode

C767: Dry Mode

C768: Complete Mode

C76X:XXXXMODE

BOILERTEMPHARDWARE

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

A/Dconverterreportsboiler

temperatureinputvalue

outsidethenormallimits.

Boilertemperaturesensor

disconnectedatPCboard.

Checkforlooseorbrokenwireconnections

atJ10onPCboard.

Securewireconnections.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

Boilernotfunctioning

properly.

Referto:

Service Diagnostics Boiler Test.

Replaceboilerifnecessary.

PCBoardisnotprocessing

temperatureinput(s)properly.

Verifyboilertemperaturesensorisworking

properly.

ReplacePCboard,ifnecessary.

C770: Power Up Mode

C771: Select Mode

C772: Close Mode

C773: Heatup Mode

C774: Sterilize Mode

C775: Vent Mode

C776: Open Mode

C777: Dry Mode

C778: Complete Mode

C77X:XXXXMODE

BOILERTEMPOVERLIMIT

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Boilertemperatureisgreater

than340°F(171.1° C)

Steamnotbeingreleased

fromchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank

Unkinkplastictube,removeobstruction,

orreplace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage.

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage.

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

Boilertemperaturesensor

disconnectedatPCboard.

Checkforlooseorbrokenwireconnections

atJ10onPCboard.

Securewireconnections.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

PCBoardisnotprocessing

temperatureinput(s)properly

Verifyboilertemperaturesensorsis

workingproperly.

ReplacePCboard,ifnecessary.

C860: Power Up Mode

C861: Select Mode

C862: Close Mode

C863: Heatup Mode

C864: Sterilize Mode

C865: Vent Mode

C866: Open Mode

C868: Complete Mode

C86X:XXXXMODE

DRYERTEMPHARDWARE

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

A/Dconverterreportsadry

heatertemperatureinput

valueoutsidethenormal

limits.

Dryheater(s)disconnected

fromPCboard.

CheckdryheaterconnectionsatJ7&J8

onPCboard.

Secureheaterconnections.

Dryheatersmalfunctioning. PutunitintoServiceDiagnosticsandverify

heateroperation.

Iftheconditionpersist,contactMidmark

TechnicalServiceDepartment.

Dryheater(s)sensingcircuit

onPCBoardmalfunctioning.

Iftheconditionpersist,contactMidmark

TechnicalServiceDepartment.

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

C870: Power Up Mode

C871: Select Mode

C872: Close Mode

C873: Heatup Mode

C874: Sterilize Mode

C875: Vent Mode

C876: Open Mode

C877: Dry Mode

C878: Complete Mode

C87X:XXXXMODE

DRYERTEMPOVERLIMIT

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Dryheatertemperature

greaterthan325°F

(162.8° C)

Dryheatersmalfunctioning. PutunitintoServiceDiagnosticsandverify

heateroperation.

Iftheconditionpersist,contactMidmark

TechnicalServiceDepartment.

Dryheater(s)sensingcircuit

onPCBoardmalfunctioning.

Iftheconditionpersist,contactMidmark

TechnicalServiceDepartment.

C881: Select Mode

C887: Dry Mode

C88X:XXXXMODE

DRYERHI-LIMITOPEN

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Dryheaterhigh-limit

thermostathasopenedforat

least0.25seconds.

Dryheater(s)disconnected

fromPCboard.

CheckdryheaterconnectionsatJ7&J8

onPCboard.

Secureheaterconnections.

PCboardmalfunctioning.

Referto:Dry Heater Voltage Test. ReplacePCboard,ifnecessary.

Dryheater(s)malfunctioning.

Referto:Dry Heater Resistance Test. Iftheconditionpersist,contactMidmark

TechnicalServiceDepartment.

Dryheater(s)sensingcircuit

onPCBoardmalfunctioning.

Iftheconditionpersist,contactMidmark

TechnicalServiceDepartment.

C981: Select Mode

C982: Close Mode

C983: Heatup Mode

C984: Sterilize Mode

C986: Open Mode

C987: Dry Mode

C98X:XXXXMODE

BOILERHI-LIMITOPEN

…

ITEMSNOTSTERILE

TURNPOWEROFF/ON

Boileroverheatthermostat

hasopenedforatleast0.25

seconds&needstobe

manually reset.

Waterpumpnotprimed. Referto:

Water pump priming instructions.

Primewaterpump.

Boilertemperaturesensor

notfunctioningproperly.

Referto:

Temperature Sensor Resistance Test.

Replaceboilertemperaturesensor.

Boileroverheatthermostat

disconnectedatPCboard.

CheckwireconnectionsatJ3onPCboard. Securewireconnections.

Looseorbrokenwire

connectionsatboiler

overheatthermostat.

Checkwireconnectionsatboiler

overheatthermostat.

Securewireconnections.

Boileroverheatthermostat

trippedopenprematurely.

Checkifoverheatthermostatcanbe

manuallyresetwithacooledboiler.

Replaceoverheatthermostat.

Sterilizer is not drying

instruments properly.

Continue on Next

Page...

Instrumentsarewetafter

drycycleiscomplete.

Sterilizernotlevel. Checkifsterilizerislevel. Placesterilizeronalevelsurface.

Sterilizerisoverloaded. Checkifchamberisoverloaded. Reduceloadsize.

Poucheswereplacedin

chamberwithpapersideup.

Checkifpouchesarepapersideup. Placepouchesplasticsideup.

Pouchesarestackedontop

ofeachother.

Checkifpouchesareoverlappingor

stackedontopofeachother.

Pouchesmayoverlapslightly,butitems

mustnotbelayered.

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

Sterilizer is not drying

instruments properly.

(continued)

Instrumentsarewetafter

drycycleiscomplete.

Doortraywasremovedfrom

chamberandreinserted.

Checkifdoortraywasremovedfrom

chamberbeforecompletionofthedry

cycle.

Instructoperatorthatoncethedoortray

hasbeenremovedfromchamber,thedry

cyclewillbeterminated.

Steamnotbeingreleased

fromchamber.

Checkforobstructioninplastictube

connectingunittoexternalcondensingtank

Unkinkplastictube,removeobstruction,

orreplace.

Checkcoppercoilinexternalcondensing

tankforblockageordamage

Clearobstructionorreplacecoppercoil.

Checkventportinchamberforblockage.

Checklterforblockage

Clearobstructioninventport.

Cleanorreplacelter.

Checkventvalveforblockage.

PutunitintoServiceDiagnosticsandcheck

ventvalveoperation.

Cleanorreplaceventvalve.

Doortrayisnotopeningtoits

fulleststagedextent.

Checkifdoortrayisopeningenoughto

allowsteamtoescapefromchamber.

Adjustdoormotorthrow.

Surfaceheater(s)

malfunctioning.

RunServiceDiagnosticsandcheck

operationofsurfaceheater(s).

ContactMidmark'sTechnicalService

Department.

Biological indicator or

chemical indicator

strip designates unit

not sterilizing.

Positivebiological

indicator.

Nocolorchange,or

incompletechangehas

occurredonchemical

indicatorstrip.

Sterilizeroverloaded. Checkifchamberisoverloaded. Reduceloadsize.

Improperusage. Checkuseroperatingprocedure. Demonstrateproperoperationtouser.

Wrongtypeofbiological

indicatororchemical

indicatorbeingusedforthis

typeofsterilizer.

Checkbiologicalorchemicalindicatorto

assureitisforsteamsterilizationandis

ratedforthecycletimesandtemperature

beingused.

RefertotheUsersGuideforproper

sterilizationmonitoringguidelines.

Biologicalindicatoror

chemicalindicatorbeing

usedispasttheexpiration

date.

Checktheindicatorand/orpackagingto

determinewhattheexpirationdateis.

Useonlybiologicalandchemical

indicatorsthathaven'texpired.

Chemicalindicatorhascome

intocontactwithwaterin

sterilizer.

Checkwithoperatoronthepositioningof

indicatorinthechamber.

Demonstratecorrectpositioningof

indicatortouser.

Biologicalorchemical

indicatorsarebeingstoredin

adampand/orhot

environment.

Checkconditionoftheareawhere

indicatorsarebeingstored.

Informoperatortofollowstorage

recommendationsofindicator

manufacturer.

Sterilizermalfunction PutunitintoServiceDiagnosticsandcheck

forstorederrorcodes,correcttemperature,

andpressurereadings.

Repairasneededbasedonresultsof

ServiceDiagnosticstestresults.

Troubleshooting Chart

Problem Display / Symptom Probable Cause Check Correction

Maintenance

message is displayed.

PERFORMPERIODICor

MONTHLYMAINTENANCE

Sterilizersoftwaresenses

thatthecyclecounthas

reached7,14,or21days

frominitialstart-upor

monthlymaintenance.

Refertotheuserguidefor

periodicmaintenance

procedures.

Performperiodicmaintenance.

Sterilizersoftwaresenses

thatthecyclecounthas

reached28daysfrominitial

start-upormonthly

maintenance

Refertotheuserguidefor

monthlymaintenance

procedures.

Performmonthlymaintenance.

Printer (Optional)

does not print.

Printerdoesnotgenerate

data.

Printerisoutofpaper. Liftprintercoverandcheck

conditionofpaper.

Installnewrollofpaper(refertouserguide).

Printercartridgeisdry. Checkconditionofprinter

cartridge.

Replaceprintercartridge(refertouserguide).

Printerwireharnessis

disconnected.

Checkprinterwireharness

connectionsonprinterandon

backofsterilizer.

Secureprinterwireharnessconnections.

Printerwireharnesshas

brokenoropenleads.

Checkprinterwireharness

leadsforcontinuity.

Replaceprinterwireharness.

Printerismalfunctioning. Checkfor5VDCatTP3&TP4

onPCboard.

Ifvoltageispresent,replaceprinter.

PCboardismalfunctioning. Checkfor5VDCatTP3&TP4

onPCboard.

Ifvoltageisnotpresent,replacePCboard.

Chamber lls with

water.

Chamberllswithwater

whencycleisabortedwith

thedoorclosed.

Unitlostpowerinheatupor

sterilizemodesduetoa

powerfailureoruserturned

powero.Chamberlled

withwaterfromthereservoir

asunitcooled.

Askquestionsaboutrecent

usagepatternsandelectrical

events(storms,outages,ect.).

Replacecheckvalveoncoppertubingbetweenthe

boilerandthepressureinterlockassembly.

English / Metric

display units can

not be changed from

display panel.

WheninUserDiagnosic

mode,English/Metric

displayunitscannotbe

changed.

Version1.1.4mainPCB. IfmainPCBversionis1.1.4. Onversion1.1.4mainPCB,ip#7dipswitchON.

ITEMS NOT STERILE messagewillbedisplayedifanerroroccursinanyofthefollowingmodes:

Closemode,HeatUpMode,orSterilizeMode.Otherwise,messagewillnotappear.

Thismessageisintendedtoindicatetotheuserthattheitemsinthechambermayormaynot

besterile,andmustbereprocessed.

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Midmark M3 Steam Sterilizer Parts Manual

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