FAQ

Frequently asked questions on W&H products and helpful descriptions on the topic of hygiene and care.

Straight & Contra-angle Handpieces

Saw Handpieces

Surgical Devices

Accessories

Sterilizers

  • Lisa (6)
    • Should I call the service station before sending equipment for repair?
      If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.
    • What periodic tests do I need to carry out on my Lisa/Lara/Lina/Lyla/Lexa sterilizer?
      Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
    • What is the maximum noise level of the Lisa sterilizer?
      The max. noise level of Lisa is 58.5 dB
  • Lisa Mini (9)
    • Should I call the service station before sending equipment for repair?
      If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.
    • What periodic tests do I need to carry out on my Lisa/Lara/Lina/Lyla/Lexa sterilizer?
      Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.
    • Whom should I contact to validate and maintain my sterilizer?
      Validation shall be carried out by an official authority. Maintenance tasks shall be carried out by a qualified and authorised technician.
    • Which water quality should I use for my sterilizer?
      The water quality for sterilizers is internationally specified by standards and directives. The reasons for this are that your sterilizer can be seriously damaged by it or the sterilization can be jeopardized. Consequently, only water with conductivity of less than 15 µS/cm should be used for your W&H sterilizer. The Multidem system is especially suited to preparing suitable water (see chapter “Water quality” in the Instructions for Use).
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
    • What is the maximum noise level of the Lisa Mini sterilizer?
      The max. noise level of Lisa Mini is 64 dB.
    • Is Lisa Mini requiring compressed air connection?
      Lisa Mini requires compressed air connection to perform sterilization cycle. The compressed air specifications are available in the Instruction for Use, chapter “Technical data”.
  • Lara XL (4)
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
    • What is the maximum noise level of the Lara, Lara XL and Lexa Plus sterilizer?
      The max. noise level of Lara is 66.9 dB. The max. noise level of Lara XL/Lexa Plus is 70 dB.
  • Lara (5)
    • Should I call the service station before sending equipment for repair?
      If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.
    • What periodic tests do I need to carry out on my Lisa/Lara/Lina/Lyla/Lexa sterilizer?
      Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
  • Lyla (6)
    • Should I call the service station before sending equipment for repair?
      If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.
    • What periodic tests do I need to carry out on my Lisa/Lara/Lina/Lyla/Lexa sterilizer?
      Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
    • Which is the maximum noise level of Lyla?
      The max. noise level of Lyla is 65.5 dB.
  • Lexa (6)
    • Should I call the service station before sending equipment for repair?
      If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.
    • What periodic tests do I need to carry out on my Lisa/Lara/Lina/Lyla/Lexa sterilizer?
      Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
    • What is the maximum noise level of the Lexa sterilizer?
      The max. noise level of Lexa is 65 dB.
  • Lina (6)
    • Should I call the service station before sending equipment for repair?
      If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.
    • What periodic tests do I need to carry out on my Lisa/Lara/Lina/Lyla/Lexa sterilizer?
      Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.
    • At the end of the cycle, there is residual water in the chamber.
      POSSIBLE CAUSE
      Sterilizer not properly levelled.
      SOLUTION
      Place the sterilizator on a flat, level surface.

      POSSIBLE CAUSE
      Overloaded chamber.
      SOLUTION
      Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

      POSSIBLE CAUSE
      Chamber filter clogged.
      SOLUTION
      Remove and clean the chamber filter.

      POSSIBLE CAUSE
      Chamber filter cap mispositioned.
      SOLUTION
      Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

      POSSIBLE CAUSE
      Load incorrectly placed.
      SOLUTION
      Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use.
    • Stains or spots on instruments.
      POSSIBLE CAUSE
      Instruments rinsed with tap water and not dried before sterilization.
      SOLUTION
      Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

      POSSIBLE CAUSE
      Use of water of poor quality or water containing chemical substances.
      SOLUTION
      Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

      POSSIBLE CAUSE
      Dirt in chamber, trays, tray rack.
      SOLUTION
      Clean the chamber and wash the chamber furniture.

      POSSIBLE CAUSE
      Contact between instruments of different materials.
      SOLUTION
      Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

      POSSIBLE CAUSE
      Scale deposits on the chamber.
      SOLUTION
      Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use).
    • Warning about saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is disconnected or full.
      SOLUTION
      Check presence and condition of the USB pen drive. If the problem persist, contact an authorized W&H service partner.
    • Which is the maximum noise level of Lina?
      The max. noise level of Lina is 65.5 dB.