W&H MN-111, Руководство по устранению неисправностей

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18 MN-111 | Service book | Errors and Troubleshooting MN-111 ENG Rev08 | 2019/06/21 | © 2019 W&H Sterilization Srl
Other problems
WATER TANK PROBLEMS
Description Possible causes Checks and actions
Overflow of the clean water tank during filling (no
acoustic signal) Upper clean water tank level sensor faulty Check the sensor placement (must be horizontal).
Check the floating part moves freely.
Check the sensor connections and wiring.
Check electrical operation of the sensor. (*)
Overflow of the used water tank Used water tank level sensor faulty Check the sensor placement (must be horizontal).
Check the floating part moves freely.
Check the sensor connections and wiring.
Check electrical operation of the sensor. (*)
Water on the top lid or from the top cap, no warning
on screen)
The "Drain used water tank." message is displayed,
in spite the tank is empty.
Used water tank drains slow or not at all Clogged tank outlet filter or clogged drain tube Clean the used water tank outlet filter.
Check the tubes from the used water tank outlet to the drain
connection; clear or replace any clogged tubes.
Recommend the user to properly clean the load prior to sterilization.
Note
: If the sterilizer is not used for over a week, both tanks must be
emptied to avoid algae growth.
No water filling from the automatic system Low-level clean water sensor faulty Check for proper sensor placement.
Check the floating part moves freely.
Check the sensor connections and wiring.
Check electrical operation of the sensor. (*)
Water filling valve faulty Check electric operation 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 faulty Check for proper sensor placement.
Check the floating part moves freely.
Check the sensor connections and wiring.
Check electrical operation of the sensor. (*)
Note (*): see Test instructions service book.
WATER SPILLAGE PROBLEMS
Location of the water Possible Cause Checks and actions
Below the door Dirt or debris under the door seal or chamber flange Execute the monthly maintenance described in the Instructions for
use.
Improper door adjustment Execute the Door adjustment cycle and procedure.
Door seal damaged Replace the door seal.
Below the service door Leak from the front drain connections Check connections and tubes.
From the bacteriological filter Leak of the check valve inside the chamber Check the check valve inside the chamber behind the steam diffuser
Under the sterilizer Leak from the water tank If necessary replace the water tank.
Leak from the tank filter hose Check connections and tubes.
If necessary replace tank filter hoses.
Leak from any of the water tubes (drain, water
pump feed) Check connections and tubes.
Replace tubes.
PRINTER PROBLEMS
Description Possible Cause Checks and actions
Thermal printer
No report printed Connection problem /
printer power problem
Check the printer serial cable.
Check the printer power supply.
Check (connect or replace) the serial (printer) flat cable coming off the
MMI board.
No paper Check presence of paper.
Printer fault Replace printer.
Wrong printer model selected Set the right printer model. Please refer to the Instructions for use.