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Other problems

MN-111 | Service book | Errors and Troubleshooting MN-111 ENG Rev08 | 2019/06/21 | © 2019 W&H Sterilization Srl

19

USB DEVICE PROBLEMS

Description

Possible Cause

Checks and actions

USB error

No communication between the MMI to the USB
devices/boards

Check the connections between the HUB, the MMI board and the USB
plug. If all connections are OK, replace the faulty component.

HTML save error or

SCL save error

Impossible to save a file on the USB device

Check if the USB device works properly.

Check if there is enough memory space in the USB device.

Note

: The SCL files take much more memory space that the HTML files.

Check if the USB device is formatted, format if necessary. Valid
formats are FAT 16 or FAT32.

Is suggest to format the USB device through the sterilizer.

DISPLAY PROBLEMS

Description

Possible Cause

Checks and actions

Points or lines are missing on the touch screen

Connection problems

Check display connection on MMI board.

Touch screen failure

Replace the MMI board if necessary.

Touch screen is too dark

Connection problems

Check the sterilizer power supply.

Check MMI board connection.

Check connection MMI removable module.

Touch screen failure contrast off

Adjust the display contrast. Please refer to the Instructions for use.

The sterilizer is in SLEEP MODE

Press the

icon or open or close the chamber door to exit sleep

mode.

Touch screen failure

Replace MMI board if necessary.

Touch screen is too bright or show strange colour

Connection problems

Check MMI board connection (e.g. Display flat cable).

Touch screen failure

Replace MMI board if necessary.

Display is working but the touch is not working

Connection problems

Check MMI board connection (e.g. touchscreen connector).

Touch screen failure

Replace MMI board if necessary.

User configuration lost or cycle history lost

SD card not detected

Check if the SD card in insert properly in the MMI slot.

Replace SD card if necessary (the SD card shall be programmed).

Replace MMI board if necessary.

OTHER PROBLEMS AND MALFUNCTIONS

Description

Possible Cause

Checks and actions

Wet load at the end of the cycle

Chamber overloaded

See maximum load weight specified for each cycle and type of load.
Please refer to the Instructions for use.

Wrong load distribution

Check if rack and trays are well positioned. See Instructions for use.

Particular load type

Extend the drying time.

Bacteriological filter failure

Replace the bacteriological filter. Please refer to the Instructions for
use.

Chamber filters obstructed

Clean the chamber filters. Please refer to the Instructions for use.

White stains on the load, chamber, trays and/or
chamber rack

Water quality

Check the quality of the water used for sterilization and switch to water
of better quality if necessary. If water gets close to the threshold of
15µs/cm conductivity, it may cause spots on sensitive objects such
as mirrors.

Load not properly rinsed and/or dried

Ensure that loads get properly rinsed and dried prior to placement in
the sterilizer to prevent stains from minerals of residual tap water.

B&D or HELIX test not passed

Leakage

See error "100" on page 11 and "130" on page 12, all causes.

Non conform water

Drain and clean the sterilizer water tank. Please refer to the
Instructions for use.

Check external filling system.

Safety valve leakage or sudden opening

Load not properly rinsed

Clean instruments and sterilizer chamber. Please refer to the
Instructions for use.

Non conform water

Drain and clean the sterilizer water tank. Please refer to the
Instructions for use.

Check external filling system.

Chamber not properly rinsed after cleaning

Clean sterilizer chamber. Please refer to the Instructions for use.

Summary of Contents for MN-111

Page 1: ...MN 111 110 V 220 V SERVICE BOOK ENG Rev08 Errors and Troubleshooting...

Page 2: ...est instructions Loop cycle Test instructions Maintenance program table Instructions for use Repair and Spare Parts Manufacturer reference contacts All Message list Instructions for use Operational st...

Page 3: ...ation Srl iii About this manual 4 Conformity 5 Symbols and messages 6 Safety warnings 8 Emergency door opening 9 Errors 10 Checks and actions 10 Other problems 18 Water tank problems 18 Water spillage...

Page 4: ...LAIMER All pictures graphics and illustrations provided in this manual are for the comprehension of the text They are not meant to be an accurate representation of product details Thus they should be...

Page 5: ...61010 1 2012 Safety requirements for electrical equipment for measurement control and laboratory use general requirements ASME Boiler and pressure vessel code EN 13060 Small steam sterilizers ANSI AA...

Page 6: ...lectrical shock Hot surfaces Risk of burns SYMBOLS USED IN THIS MANUAL Mounted with magnets OR magnetic components present Components sensitive to electrostatic discharges ATTENTION Don t use any glue...

Page 7: ...Symbols and messages MN 111 Service book Errors and Troubleshooting MN 111 ENG Rev08 2019 06 21 2019 W H Sterilization Srl 7 LABEL ON THE BOX...

Page 8: ...afety devices e g glasses gloves protection mask etc n Before making any repairs or transport ward off unauthorized personnel from the working area n Refer also to all the safety indications given in...

Page 9: ...ast Notice Carry out this procedure only as indicated and with the sterilizer in the indicated conditions Any attempt to open the door in a different way can seriously damage the sterilizer OPEN THE D...

Page 10: ...re short circuited or out of range Main board failure In the Component Activation menu check the resistance of all the supplied components heaters vacuum pump water pump Compare the values shown by th...

Page 11: ...ilization cycle If the problem persist see next step Water pump failure Check priming ULKA valve failure See Test instructions service book chapter SPECIFIC TESTS FOR INDIVIDUAL COMPONENTS Water pump...

Page 12: ...etical and chamber temperature 0 8 C if Tchamaber Ttheo no error shown See error 130 above all causes 133 At the end of HEA3 phase the difference between theoretical and chamber temperature 0 8 C if T...

Page 13: ...DIVIDUAL COMPONENTS Chamber heating element and safety thermostat TABLE POINT 1 Chamber heater not connected Check the connections and the wires between the heater and the main board If the error pers...

Page 14: ...Check the connections and the wires between the heating element and the main board If the error persists see next step Main board failure See Test instructions service book chapter SPECIFIC TESTS FOR...

Page 15: ...arting from the beginning of the cycle H20 1200cc Door gasket failure Check and replace the door gasket if needed water pump failure See Test instructions service book chapter SPECIFIC TESTS FOR INDIV...

Page 16: ...g system automaticmode Door locking system manual mode Replace the microswitch if needed If the problem persists check the continuity of the cables from the microswitch to the main board If the proble...

Page 17: ...place the main board 591 Software error Software error Main board failure Upgrade the software to the latest version if the problem persists replace the main board If the problem persists call service...

Page 18: ...ing valve faulty Check electricoperation of the valve Check the valve connections and wiring The Fill clean water tank message is displayed in spite the tank is full Low level clean water sensor fault...

Page 19: ...ace MMIboard if necessary User configuration lost or cycle history lost SD card not detected Check if the SD card in insert properly in the MMIslot Replace SD card if necessary the SD card shall be pr...

Page 20: ...See error 100 on page 11 and 130 on page 12 all causes Water consumption too high Chamber overloaded See maximum load weight specified for each cycle and type of load Please refer to the Instructions...

Page 21: ......

Page 22: ...Manufacturer W H Sterilization Srl via Bolgara 2 Brusaporto BG Italy www wh com med wh com 39 035 66 63 000 MN 111 Service book Errors and Troubleshooting ENG Rev08 2019 06 21 Subject to changes...

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