Midmark M3 Steam Sterilizer Reference guide

Brand: Midmark

Model: M3 Steam Sterilizer

Type: Reference guide

Midmark M3 Steam Sterilizer delivers fast and reliable sterilization of dental handpieces and instruments. It's easy to use with a simple control panel and clear display, allowing you to select the appropriate sterilization cycle with just a few button presses. The sterilizer features both unwrapped and wrapped cycle options, ensuring effective sterilization for various instruments. Additionally, the built-in leak check and automatic shut-off functions ensure safe operation, providing peace of mind during the sterilization process.

004-0778-00

TP210 Rev. A

Rev. AA2 3/6/20

Note

Refer to the Service manual for complete instructions.

SA104100-1i

Quick Reference Guide

M3 Steam Sterilizer

Dental Handpiece Sterilizer

When calling for service please always have

the following information available:

 •ModelNumber

 •SerialNumber

 •Descriptionofproblem

PhoneNumber..............1-800MIDMARK(643-6275).

SA1781i

(*)Denotesconstantvoltage.

(**)Denotesvoltagepresentonlyduringcomponentoperation.

(***)DenotesrectiedDCvoltagepresentduringoperation.

Always disconnect plug connector when checking voltage.

Fuses:

115 VAC models:

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 models:

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

F2..........0.125 amp, 250 V, Slo Blo, 5mm x 20mm

Leak Check

Door Tray Gasket

• Checkforwaterorsteamleakagefromaround

Door / Tray

•CleanorreplaceDoor/TrayGasket.

Vent Valve

• CheckPlastictubeconnectingunittotheexternal

condensingtankforaowofsteamandhot

water in between vent valve operations.

•CleanorreplaceVentValve.

Pressure Relief Valve

• Checkforwaterorsteamleakagefromunderthe

back left hand corner of sterilizer.

•Popo&re-seat,orreplacePressureReliefValve.

Pressure Sensor Tubing

• Check for water or steam leakage onto main

PCboardwherepressuresensortubing

attachestopressuretransducer..

•ReattachorreplacePressureSensorTubing.

Fittings

• Checkallplumbingttingconnections

for leakage.

•Tightenorreplacettings.

Note: Do not energize water pump for

more then 20 seconds at a time.

SA1782i

Vent Valve

Pressure Relief Valve

Door Tray

Gasket

Pressure

Sensor Tubing

Normal Sterilizer Operation Sequence

Plug Sterilizer into outlet:

Operating

Mode

Display Reads What is happening...

Power Up

INITIALIZING

SYSTEM

Linevoltageissuppliedtothepowerswitch.SwitchON-powersthePCboard

thruF1fuse. (F2 fuse provides protection for PC board transformer).

TOTAL CYCLES XXXX

M3 vX.XX

Arunningcountofallcyclesrunonthissterilizerisshown,aswellasthemodel

number,andthecontrolsoftwareversionnumber.

Select Cycle

SELECT CYCLE

Selectcycleindicatesthattheunitisreadyfortheusertopressacyclebutton.

Press a Cycle Button: (Unwrapped for example)

UNWRAPPED

270° F 3.5 MINUTES

25 MINUTE DRY

The parameters for the selected cycle are displayed (temperature / sterilization

time / drying time).

Press (Start)

Door Close

CLOSING

CHAMBER

•TraySwitch-Closed

•DoorMotor-Energizes

•DoorClawSwitch-Open

•CondensationHeater-On

•DoorOpenSwitch-Opens

•DoorClosedSwitch-Closes

•VentValve-Opens

•Boiler-cyclesOn/O

CHAMBER

CLOSED

•TraySwitch-Closed

•DoorMotor-De-energized

•DoorClawSwitch-Closed

•CondensationHeater-On

•DoorOpenSwitch-Opened

•DoorClosedSwitch-Closed

•VentValve-Opened

•Boiler-cyclesOn/O

Heat Up

HEATING - UNWRAPPED

XXX° F XX.X PSI

•Pump-cyclesOn/O

•Boiler-cyclesOn/O

•VentValve-cyclesOpen/Closed

•CondensationHeater-On

PumpisinitiallyOnfor1.5sec.,thenOfor12sec.,thencyclesOn/O.

Boilermaintainstargettemp.of18°Fabovesterilizationtemperature.

Vent Valveopensuntilchamberreaches212°F,thencloses.

Sterilize

STERILIZING

X:XX Min XXX° F

XX.X PSI

•Pump-cyclesOn/O

•Boiler-cyclesOn/O

•VentValve-cyclesOpen/Closed

•CondensationHeater-On

Vent

VENTING

XXX° F XX.X PSI

•VentValve-Opens

•CondensationHeater-ON

•DoorMotor-De-energized

(Until chamber pressure decreases

to 0.5 PSI)

Door Open

DOOR TO OPEN

•DoorMotor-Energizes

•CondensationHeater-ON

•DoorClosedSwitch-Opens

•DoorOpenSwitch-Closes

Dry

DRYING

X:XX

•DryHeaters-cycleOn/O

•CondensationHeater-ON

•Boiler-cyclesOn/O

NOTE: Dry Heaters are inaccessible and non-servicable.

Boiler is OnifdryheatersareOand boilertemperatureis<240°

Boiler is O if dry heaters are On orboilertemperatureis>240°

Boiler

TP210 Rev. A

Trouble Shooting

Sterilizer has no power.

•Sterilizernotpluggedin.

•Powerswitchturnedo.

•Nopoweratwalloutlet.

•F1fuseonPCboardisblownoropen.

•Inletswitchmodulemaybefaulty.

Sterilizer has power, but touchpad and display do

not work.

•F2fuseonPCboardisblownoropen.

•Ribbon cable from J15 on main PC board to J3 on display

PC board is loose or disconnected.

•J15/J3ribboncablehasopenlead(s).

Sterilizer is not drying instruments properly.

•Sterilizer is not level.

•Sterilizer is over loaded.

•Werepouchesplacedwithpapersideup?

•Door tray was removed from chamber and reinserted.

•Steam not being released from chamber.

Printer (Optional) does not print.

•Printerisoutofpaper.

•Printer cartridge is dry.

•Printer wire harness is disconnected.

•Printer wire harness has broken or open leads.

•5VDCatTP3&TP4onmainPCboard?

Positive biological indicator.

No color change, or incomplete change has

occurred on chemical indicator strip.

•Sterilizer overloaded.

•Improperusage.

•Wrongtypeofindicatorbeingusedforthistypeofsterilizer.

•Chemical indicator has come into contact with water in

sterilizer.

•Indicatorstripsarebeingstoredinadampand/orhot

environment.

•Indicatorsusedhaveexpired(pasttheirshelflifedate).

C23X WATER LOW:

•Reservoirsensordetectsthesupplywaterislow.

•Reservoir water is low.

•Level sensor connections loose or disconnected.

•Faultywaterlevelsensor.

C32X DOOR CLOSED:

•Check Door Motor Open Switch.

•Checkforphysicalobstructiontodoormovement.

•IsdoormotorcammakingcontactwiththeDoorOpen

Switch?

•Istherestilltoomuchpressureinchamber?

•IsPressureInterlockAssembly.stuckopen?Verifythat

chamberpressureiszero.

•Checkforobstructioninplastictubetoexternal

condensing tank.

•Iscoppercoilinexternalcondensingtankblockedor

damaged?

•Check vent port in chamber for blockage.

•Checklterforblockage.Cleanorreplace.

•Check vent valve for blockage. Clean or replace vent

valve.

•IsDoorOpenSwitchstuckintheclosedstate?

•Checkifphotointerrupterisdefective.

C44X EXTERNAL TANK FULL:

•Water level sensor in external tank detected water level is

too high to perform next cycle.

•Externalcondensingtankisfull.

•Look for corrosion on condensing tank level sensors.

Clean sensors.

•Water level sensors or attached wiring damaged.

•System is not processing data properly.

C53X STEAM TEMP LOW:

•DuringHeatup,sterilizationmodeisnotreachedwithin15

minutes.

•DuringSterilizationMode,steamtemp.dropslowerthan

orequaltothesetpointfortheselectedcycle.

•Low water in reservoir. Fill reservoir with distilled water.

•LowwaterinreservoirnotcaughtbyaC23xerror.

•Waterpumpnotprimed.

•Chambertemperaturesensornotfunctioningproperly.

•Boilertemperaturesensornotfunctioningproperly.

•Boilernotfunctioningproperly.

C54X STEAM TEMP HIGH:

•DuringSterilizationMode,steamtemp.riseshigherthan

orequaltotheselectedcyclesetpoint+8°F.

•Steam not being released from chamber.

Istubingtoexternalcondensingtankobstructed?

Iscoppercoilinext.condensingtankblockedor

damaged?

Isventportinchamberblocked?Islterblocked?

Isventvalveblocked?Cleanorreplaceventvalve.

•Steamleakage.Seeleakcheckprocedure.

•Chambertemp.sensornotfunctioningproperly.

•Boilertemperaturesensornotfunctioningproperly.

C56X STEAM TEMP HARDWARE:

•A/DconverteronPCBoardreportsasteamtemperature

inputvalueoutsidethelimits.

•Steamleakage.Seeleakcheckprocedure.

•ChambertemperaturesensordisconnectedfromJ11on

PC Board.

•Chambertemperaturesensornotfunctioningproperly.

C57X STEAM TEMP OVER LIMIT:

•Steamtemperaturegreaterthan285°F

•Steam not being released from chamber.

Istubingtoexternalcondensingtankobstructed?

Iscoppercoilinext.condensingtankblockedor

damaged?

Isventportinchamberblocked?Islterblocked?

Isventvalveblocked?.Cleanorreplaceventvalve.

•Steam leakage.

•Chambertemp.sensornotfunctioningproperly.

•Boilertemperaturesensornotfunctioningproperly.

C63X PRESSURE LOW:

•InHeatupMode,rstventvalveopenmustoccurwithin

10minutes.

•Low water in reservoir.

•LowwaterinreservoirnotcaughtbyaC23xerror.

•Waterpumpnotprimed.

•Steamleakage.SeeLeakcheckprocedure.

•Chambertemp.sensornotfunctioningproperly.

•Boilertemperaturesensornotfunctioningproperly.

•Boilernotfunctioningproperly.

•Pressuretransducertubingdamaged,blockedor

disconnected.

•Ispressurelockassemblyobstructed?

•Photointerrupternotfunctioningproperly.

C77X BOILER TEMP OVER LIMIT:

•Boilertemperatureisgreaterthan340°F.

•Steam not being released from chamber.

Istubingtoexternalcondensingtankobstructed?

Iscoppercoilinexternalcondensingtankblockedor

damaged?

Isventportinchamberblocked?Islterblocked?

Isventvalveblocked?.Cleanorreplaceventvalve.

•Boiler temp. sensor disconnected at J10 on PC board.

•Boilertemp.sensornotfunctioningproperly.

C86X DRYER TEMP HARDWARE:

•A/Dconverterreportsadryheatertemp.inputvalue

outsidelimits.

•Chambertemperaturesensornotfunctioningproperly.

•Dryheater(s)disconnectedfromJ7orJ8onPCboard.

•Verifyheateroperation.Iftheconditionpersists,contact

Midmark Technical Service Department.

C87X DRYER TEMP OVER LIMIT:

•Dryheatertemperaturegreaterthan325°F.

•Chambertemperaturesensornotfunctioningproperly.

•Dryheater(s)disconnectedfromJ7orJ8onPCboard.

•Verifyheateroperation.Iftheconditionpersists,contact

Midmark Technical Service Department.

C88X DRYER HI-LIMIT OPEN:

•Dry heater high-limit thermostat has opened for at least

0.25 seconds.

•Dryheater(s)disconnectedfromJ7orJ8onPCboard.

Perform: Dry Heater Voltage Test.

Perform:DryHeaterResistanceTest.Ifthecondition

persists, contact Midmark Technical Service Department.

C98X BOILER HI-LIMIT OPEN:

•Boiler overheat thermostat has opened for at least 0.25

secondsandneedstobemanuallyreset.

•Waterpumpnotprimed.

•Boilertemperaturesensornotfunctioningproperly.

•Boiler overheat thermostat disconnected at J13 on PC

board.

•Loose or broken wire connections at boiler overheat

thermostat.

•Boileroverheatthermostattrippedopenprematurely.

Replace thermostat.

C64X PRESSURE HIGH:

•Isgaugepressureinthechambergreaterthan2.0PSIg

(13.8kPag)whenitshouldbenearzero?

•Steam not being released from chamber.

Istubingtoexternalcondensingtankobstructed?

Iscoppercoilinexternalcondensingtankblockedor

damaged?

Isventportinchamberblocked?Islterblocked?

Isventvalveblocked?Cleanorreplaceventvalve.

•Pressureisbeingreadabnormallyhighbypressure

transducer.

C66X PRESSURE HARDWARE:

•A/Dconverterreportsagaugepressureinputvalue

outsidelimits.

•Steam not being released from chamber.

Istubingtoexternalcondensingtankobstructed?

Iscoppercoilinexternalcondensingtankblockedor

damaged?

Isventportinchamberblocked?Islterblocked?

Isventvalveblocked?.Cleanorreplaceventvalve.

•Steamleakage.SeeLeakcheckprocedure.

•Chambertemperaturesensornotfunctioningproperly.

•Boilertemperaturesensornotfunctioningproperly.

C67X PRESSURE OVER LIMIT:

•Gaugechamberpressuregreaterthan40PSI.

•Steam not being released from chamber.

Istubingtoexternalcondensingtankobstructed?

Iscoppercoilinexternalcondensingtankblockedor

damaged?

Isventportinchamberblocked?Islterblocked?

Isventvalveblocked?.Cleanorreplaceventvalve.

•Steamleakage.SeeLeakcheckprocedure.

•Chambertemp.sensornotfunctioningproperly.

•Boilertemp.sensornotfunctioningproperly.

C76X BOILER TEMP HARDWARE:

•A/Dconverterreportsboilertemp.inputvalueoutside

limits.

•Boiler temp. sensor disconnected at J10 on PC board.

•Boilertemp.sensornotfunctioningproperly.

•Boilernotfunctioningproperly.

Error Codes (abbreviated list)

Reference the Service Manual for complete list of

Error Codes and trouble shooting information.

Digit

First Digit

(Component)

Second Digit

(Problem)

Third Digit

(Mode)

0 GeneralSystem Blank* Power Up Mode

1 StopButton Power Loss

Select Cycle

Mode

Water Level

Sensor

Closed Door Close Mode

3 Door Switch Low Heat Up Mode

Ext.Condensing

Tank

High Sterilize Mode

5 Temp. Sensor Tray Switch Open Vent Mode

6 PressureSensor Hardware Door Open Mode

Boiler

Temperature

Over Limit Dry Mode

8 Dry Heater Temp. Open Complete Mode

High Limit

Thermostat

(notused) Miscellaneous

*Inthe100SeriesErrorsa0indicates

was Pressed

C010 POWER UP MODE SYSTEM POWER LOSE:

•Powerinterruption-anymode-sterilizationmaybe

compromised.

•PoweredoduringChamberClose,HeatUp,or

Sterilization mode.

•Unit must be pluggedintoadedicated, 20 amp circuit.

C060 POWER UP MODE SYSTEM HARDWARE:

•Atpowerup,memory,orhardwarenotinitializing.

•Powerhasbeenrapidlycycledo/on(wasthereastorm?

apoweroutage?)

C10X STOP KEY:

•The stop key was sensed.

•Diduserpress

duringthecycle?

•Checktouchpadmembraneswitch.

Midmark M3 Steam Sterilizer Reference guide

Midmark M3 Steam Sterilizer Reference guide

Midmark M3 Steam Sterilizer Reference guide

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