W&H Lara RIS-311 Instructions For Use Manual page 86

Diagnostics
Problem
Corrosion or spots on
instruments.
Instruments are turning brown or
black.
The cycle report printer does not
work.
No cycles are stored in the cycle
history menu.
When starting a cycle, the
chamber door locks but re-opens
immediately. The "Open the door"
message appears.
86
Possible cause
Tap water on instruments when placed in the
sterilizer.
Use of water of poor quality or water containing
chemical substances.
Organic or chemical residues on the instruments.
Chamber, trays, chamber rack dirty.
Contact between instruments of different materials.
Scale deposits on the chamber.
Incorrect temperature selected.
Printer not properly connected or not powered.
An electronic board was replaced by service.
Door gasket not properly placed; seal sticking out.
Door jammed by external objects or by the load
itself.
Ensure that instruments are dry before they are placed in the sterilizer.
Drain both water tanks. Use water of good quality. See "Water quality" on page 102.
Clean, rinse and dry instruments before placing them in the sterilizer. See "Load
maintenance and preparation" on page 49
Clean the chamber and wash the chamber furniture.
Ensure that instruments of different materials do not touch (aluminum, carbon or
stainless steel, etc.); place them on different trays or cassettes or pouch them. See
"Load maintenance and preparation" on page 49
Clean the chamber and use water of good quality. See "Water quality" on page 102.
Select a sterilization cycle featuring a lower sterilization temperature. Follow the
instructions of the instrument manufacturer.
Check the data and the power connection to the printer.
None. The memory of the old board cannot be restored. Save periodically the history on
the USB pen drive.
Ensure that the door gasket is evenly inserted on the entire circumference.
Remove any objects interfering with the chamber door. Check the door does not force
against the load or the chamber furniture.
Lara XL | Instructions for Use | RIS-311 ENG Rev02 | 01/06/2022 | © W&H Sterilization Srl
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