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FAQ

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

Couplings

Accessories

Saw Handpieces

Implant stability measurement

  • Osstell Beacon (2)
    • What does ISQ stand for?
      The abbreviation ISQ stands for Implant Stability Quotient. It is a value between 1 and 100 and gives the surgeon an insight of the implant stability after placing the implant. With the ISQ value the surgeon can monitor the osseointegration.
    • Where can I buy the SmartPegs?
      Please contact your local W&H UK partner
      A voucher will be included with any unit purchased, enabling the purchaser to request 5 free SmartPegs.

Air Scaler

Electric Motor

Cleaning & Disinfection Agents

  • BePro (5)
    • What are the main aspects I have to consider when choosing a disinfectant?
      There are three fundamental aspects that must always be considered when choosing a disinfectant: the desired efficacy, i.e. the ability of the product to be active on a wide range of pathogens, the expected efficiency, i.e. the ability of the product to reach its maximum effectiveness in the shortest possible time and, in the case of concentrated products, with the lowest possible concentration and finally the necessary compatibility, i.e. the possibility of using the product without the risk of damaging, destroying or invalidating its use of the tool or surface to be treated.
    • Are there pathogens more resistant than mycobacteria?
      Yes, the most difficult pathogens to eliminate are spores and prions, for to eliminate of which it is necessary to resort to the use of the autoclave for sterilization.
    • Are all disinfectants the same?
      Disinfectants are not all the same, there are many different types based on their formulation and the active principle(s) contained therein.
    • How do I choose the right disinfectant for my practice?
      Depending on the categories of pathogenic microorganisms on which the disinfectant is effective, different levels of disinfection are distinguished; high, intermediate and low. In order to ensure total safety in the practice, for both patients and operators, the choice of disinfectant to be used must always fall on a product that ensures a high level of disinfection.
    • Are all pathogens equally resistant to disinfectants?
      No, pathogens have very different resistances depending on the disinfectant substance used to try to eliminate them. The least resistant pathogens range from the encapsulated viruses up to mycobacteria, which are instead the most resistant and require a high level of disinfection to eliminate them.

Accessories

  • Seal2 (1)
    • Should I pre-wrap and how long can I store my instruments after sterilization?
      Under current UK decontamination guidance, with a type B vacuum cycle, instruments should be pre-wrapped and once sterilized can be stored for up to 12 months. Wrapping should take place shortly after washing and disinfection. Under current UK decontamination guidance, with a type N cycle, instruments should not be pre-wrapped. Once sterilized, instruments can be immediately aseptically wrapped and stored for up to 12 months. Instruments should always be dry before they are placed in the purpose-designed packaging.

Straight & Contra-angle Handpieces

Surgical Devices

Straight & Contra-angle Handpieces

Turbines

Reprocessing Devices

  • Assistina TWIN (6)
    • Why is there no rotational lubrication option in the Assistina TWIN?
      The oil is atomized in the Assistina TWIN before it enters the instrument. This ensures full coverage of the gear parts but eliminates the need for technically complex and time-consuming rotational lubrication. There is no negative impact on the quality of maintenance with the high level results corresponding to those achieved using the Assistina 301 Plus.
    • What instrument adaptors are available for the Assistina TWIN?
      All adaptors that are suitable for the Assistina 3x2/3x3 can also be used in the Assistina TWIN. There is only one exception: the RM/ISO adaptor for the Assistina 3x2/3x3 is not compatible with the Assistina TWIN. Quick Connect adaptors ISO and RM can be used for the Assistina TWIN instead. An overview of all adaptors is available on the product website.
    • What does HEPA mean, and what is filtered out of the air?
      HEPA is short for 'High Efficiency Particular Air', and the filter is classified as HEPA class E11. This means that the filter retains all particles larger than 1 µm, which includes, among other things, a wide range of bacteria and viruses, suspended particles such as dust and respirable aerosols.
    • How does the user know when the TWIN Care Set needs to be replaced?
      The intelligent process monitoring system documents the number of maintenance cycles that have been performed, thereby automatically calculating the number of instruments that can be serviced with the remaining quantity of fluid. The user receives an alert 300 cycles before the cartridge needs replacing (the oil and cleaner LEDs on the top of the unit turn yellow in colour).
    • Why does the Assistina TWIN have a HEPA filter?
      During the Assistina TWIN's handpiece maintenance process the rotating parts are lubricated with oil and the spray channels rinsed with cleaning solution. These liquids are introduced to the handpieces using compressed air, which produces aerosols that may contain potentially contaminated body fluids (e.g. blood and saliva). In order to ensure that the apparatus poses no risk to the user, the patient or third parties, aerosols must be prevented from leaking out of the apparatus. We make sure of this by using active suction and the HEPA filter. This HEPA filter needs to be changed regularly, which is why the lifespan of the filter is matched exactly to the capacity of the two cartridges. The HEPA filter therefore needs changing every time that the refill cartridge set is replaced.
    • How often does the TWIN Care Set need to be replaced?
      The consumption volumes for each instrument are 0.07 ml of oil and 0.07 ml of cleaning solution. This gives a maximum capacity of 2857 cycles. In reality, the value is around 2800 to 2850 cycles, as initial filling is also required and the fill quantity of the cartridges is subject to certain tolerances that are regulated by the applicable standards.
  • Assistina ONE (8)
    • How often does the ONE Care Set needs to be replaced?
      The consumption volumes for each instrument are 0.07 ml of oil and 0.07 ml of cleaning solution. This gives a maximum capacity of 2857 cycles. The value is around 2800 to 2850 cycles, as initial filling is also required and the fill quantity of the cartridges is subject to certain tolerances that are regulated by the applicable standards.
    • Why there is no rotational lubrication option in the Assistina One?
      The oil is atomized in the Assistina One before it enters the instrument. This ensures full coverage of the gear parts, eliminating the need for technically complex and time-consuming rotational lubrication. However, there is no negative impact on the maintenance quality.
    • What does HEPA mean, and what is filtered out of the air?
      HEPA is short for 'High Efficiency Particular Air', and the filter is classified as HEPA class E11. This means that the filter retains all particles larger than 1 µm, which includes, among other things, a wide range of bacteria and viruses, suspended particles such as dust and respirable aerosols.
    • What is the difference between oil nebulization and rotational lubrication?
      Final result is the same, but in a shorter time. In the nebulization system, oil is nebulized in the adaptor before it is blown into the handpiece. An oil mist coats all gear parts.
    • What instrument adaptors are available for the Assistina One?
      All adaptors that are suitable for the Assistina 3x2/3x3 can also be used in the Assistina One. There is only one exception: the RM/ISO adaptor for the Assistina 3x2/3x3 is not compatible with the Assistina One. Quick Connect adaptors ISO and RM can be used for the Assistina One instead. An overview of all adaptors is available in the product website.
    • How does the user know when the ONE Care Set needs to be replaced?
      The ONE Care Set must be replaced when the cartridges are empty. The levels can be checked thanks to the device's fill level indicators, located on the right and left sides.
    • Why does the Assistina One have a HEPA filter?
      During the maintenance process in the Assistina One, the rotating parts are lubricated with oil, and the spray channels rinsed with cleaning solution. These liquids are introduced to the handpieces using compressed air, which produces aerosols that may contain potentially contaminated body fluids (e.g. blood and saliva). In order to ensure that the apparatus poses no risk to the user, the patient or third parties, the legislation stipulates that aerosols must be prevented from leaking out of the apparatus. We make sure of this by using active suction and the HEPA filter. This HEPA filter must of course be changed regularly, which is why the lifespan of the filter is matched exactly to the capacity of the two cartridges. The HEPA filter therefore reaches the end of its service life once one set of cartridges has been used.
    • How do you replace the ONE Care Set?
      The two cartridges and the filter can be changed easily without any tools. The fluid is supplied via tapping needles in the bottom of the cartridge spaces that penetrate the cartridge membrane, thereby drawing the fluid out of the cartridge. The two cartridges have different shapes to ensure that the two fluid types cannot be mixed up. In addition, it is only possible to install the HEPA filter incorrectly by using force, which is not necessary.
  • ThermoKlenz (9)
    • Do I need to carry out periodic testing on my ThermoKlenz?
      Yes, testing is an integral part of ensuring that a small sterilizer consistently performs to operating parameters set during the machines commissioning. Failure to carry out routine periodic tests and maintenance tasks could compromise safety and have legal and insurance-related implications for the registered Manager.
    • What periodic tests do I need to carry out on my ThermoKlenz?
      Periodic testing is set out in the current national decontamination guildance document. In addition to a daily automatic control test and weekly safety inspection, other periodic tests should be performed by the operator or user and will normally consist of: - Protein Residue Test - Cleaning Efficacy Test (Residual Soil Detection Test) Additional information relating to these tests and how to carry out these tests can be found on the Video Guides section of this web site.
    • Who should I use to carry out validation and maintenance on my ThermoKlenz?
      All validation and maintenance should be undertaken by the Competent Person (Decontamination) or Competent Person (maintenance).
    • How do I de-scale my ThermoKlenz?
      Information and videos relating to de-scaling your ThermoKlenz can be found on the Video Tutorial section of this web site.
    • Does my ThermoKlenz need to be commissioned from new?
      Yes, validation is needed for new equipment at installation and annually thereafter. It will also be necessary to validate equipment after any major repairs have been carried out.
    • Can I process all handpieces in my ThermoKlenz?
      No, only instruments which have the thermal disinfection symbol can be processed, check with the manufacturer that a washer-disinfector can be used to clean the handpiece.
    • What is validation?
      Validation is a series of tests carried out with the use of independent specialist test equipment, as is necessary to demonstrate that the physical conditions required for sterilization, thermal disinfection and/or cleaning (i.e. temperature, pressure, time) are achieved.
    • Do I need to document the results of all periodic tests?
      Yes, all tests performed by the operator or user should be recorded in a logbook with the date and signature of the individual how carried out the test. Every Sterilizer and every thermo washer disinfector should have a logbook (file) in which test details pertaining to the lifecycle of the equipment (from purchase - disposal) are recorded. A logbook is provided as standard with the Premium Careplus Service Contract from W&H, or as an optional extra with the Premium Care Service Contract.
    • How long should I Keep periodic test records?
      Under current national decontamination guildance, all audit documents should be stored for at least two years and they should not be removed from the premises or destroyed.

Cordless Devices

Air polisher

Straight & Contra-angle Handpieces

Water Treatment Devices

  • Osmo (1)
    • What water quality should I use with my Lisa/Lina?
      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 jeopardised. Consequently, only water with conductivity of less than 10 µS/cm in North America and 15 µS/cm for the rest of the world should be used for your W&H sterilizer. The Water treatment devices Multidem and Osmo are especially designed to prepare suitable water (see chapter “Water quality” in the Instructions for Use).

Piezo Scaler

Sterilizers

  • MS Sterilizer (3)
    • What is validation?
      Validation is a series of tests carried out with the use of independent specialist test equipment, as is necessary to demonstrate that the physical conditions required for sterilization, thermal disinfection and/or cleaning (i.e. temperature, pressure, time) are achieved.
    • Do I need to document the results of all periodic tests?
      Yes, all tests performed by the operator or user should be recorded in a logbook with the date and signature of the individual how carried out the test. Every Sterilizer and every thermo washer disinfector should have a logbook (file) in which test details pertaining to the lifecycle of the equipment (from purchase - disposal) are recorded. A logbook is provided as standard with the Premium Careplus Service Contract from W&H, or as an optional extra with the Premium Care Service Contract.
    • How often should I de-scale my Thermoklenz?
      Water hardness can differ depending of the region in which the unit is located. Carrying out a water hardness test will enable you to gauge how hard the incoming water is. The frequency of de-scaling cycles will depend on the water hardness and the number of cycles run per week. W&H recommends that at least one de-scaling cycle be run each week. More frequent de-scaling cycles should be run if the washer disinfector has a heavier workload or if the water is hard. Additional information relating to these tests and how to carry out these tests can be found on the Video Tutorial section of this web site.
  • Lara (24)
    • Do I need to carry out periodic testing on my W&H Sterilizer?
      All W&H sterilizers features test cycles (B&D/Helix test, Vacuum test). Compulsory and frequency of testing are regulated by local/national guidelines.
    • What is validation?
      Validation is a series of tests carried out with the use of independent specialist test equipment, as is necessary to demonstrate that the physical conditions required for sterilization, thermal disinfection and/or cleaning (i.e. temperature, pressure, time) are achieved.
    • Do I need to document the results of all periodic tests?
      Yes, all tests performed by the operator or user should be recorded in a logbook with the date and signature of the individual how carried out the test. Every Sterilizer and every thermo washer disinfector should have a logbook (file) in which test details pertaining to the lifecycle of the equipment (from purchase - disposal) are recorded. A logbook is provided as standard with the Premium Careplus Service Contract from W&H, or as an optional extra with the Premium Care Service Contract.
    • How long should I Keep periodic test records?
      Under current national decontamination guildance, all audit documents should be stored for at least two years and they should not be removed from the premises or destroyed.
    • Does my Lisa/Lina need to be commissioned from new?
      Yes, validation is needed for new equipment at installation and annually thereafter. It will also be necessary to validate equipment after any major repairs have been carried out.
    • Who should I use to carry out validation and maintenance on my Lisa/Lina?
      All validation and maintenance should be undertaken by the Competent Person (Decontamination) or Competent Person (maintenance).
    • How do I change consumable components on my sterilizer?
      Consumable replacement instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • How do I clean the water tanks and what products should I use?
      Water tank cleaning instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • What water quality should I use with my Lisa/Lina?
      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 jeopardised. Consequently, only water with conductivity of less than 10 µS/cm in North America and 15 µS/cm for the rest of the world should be used for your W&H sterilizer. The Water treatment devices Multidem and Osmo are especially designed to prepare suitable water (see chapter “Water quality” in the Instructions for Use).
    • Should I pre-wrap and how long can I store my instruments after sterilization?
      Under current UK decontamination guidance, with a type B vacuum cycle, instruments should be pre-wrapped and once sterilized can be stored for up to 12 months. Wrapping should take place shortly after washing and disinfection. Under current UK decontamination guidance, with a type N cycle, instruments should not be pre-wrapped. Once sterilized, instruments can be immediately aseptically wrapped and stored for up to 12 months. Instruments should always be dry before they are placed in the purpose-designed packaging.
    • Lisa 17/22
      At the end of the cycle, there is residual water in the chamber
      POSSIBLE CAUSE
      Sterilizer not properly levelled
      SOLUTION
      Properly level the surface the sterilizer is placed on.

      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 MAINTENANCE)

      POSSIBLE CAUSE
      Load incorrectly placed
      SOLUTION
      Follow the recommendations as listed in ANNEX 2.
    • Lisa 17/22
      When starting a cycle, the chamber door locks but re-opens immediately. The “Open the door” message appears.
      POSSIBLE CAUSE
      Door seal not properly placed; seal sticking out
      SOLUTION
      Ensure that the door seal is correctly inserted around the whole circumference.

      POSSIBLE CAUSE
      Door jammed by external objects or by the load itself
      SOLUTION
      Remove any objects interfering with the chamber door. Check that the door does not push against the load or the chamber furniture.
    • Lisa 17/22
      The sterilizer enters into “Sleep mode” immediately after opening the chamber door.
      POSSIBLE CAUSE
      The chamber door has not been opened after the previous cycle had finished and the “Sleep mode delay” has expired
      SOLUTION
      Press the SLEEP MODE button to exit”.
    • Lisa 17/22
      The sterilizer remains switched OFF.
      POSSIBLE CAUSE
      The main switch or network circuit breaker is OFF
      SOLUTION
      Activate the main switch or network circuit breaker (ON).

      POSSIBLE CAUSE
      No voltage at the socket
      SOLUTION
      Check the electric circuit.

      POSSIBLE CAUSE
      The power cord is not connected properly
      SOLUTION
      Check and connect the power cord properly.
    • Lisa 17/22
      Water is leaking at the front of the sterilizer
      POSSIBLE CAUSE
      Leaks through the chamber door seal
      SOLUTION
      Clean or replace the door seal. Clean the chamber face side.

      POSSIBLE CAUSE
      Internal leak.
      SOLUTIONS
      Call technical service.
    • Lisa 17/22
      No cycles are stored in the cycle history menu
      POSSIBLE CAUSE
      An electronic board was replaced by service.
      SOLUTION
      None. The memory of the old board cannot be restored. Save periodically the history on the USB pen drive.
    • Lisa 17/22
      Corrosion or spots on instruments
      POSSIBLE CAUSE
      Tap water on instruments when placed in the sterilizer
      SOLUTION
      Ensure that instruments are 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 water of good quality (see ANNEX 7).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see ANNEX 2).

      POSSIBLE CAUSE
      Chamber, trays, tray rack dirty
      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 (aluminum, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (refer to ANNEX 2).

      POSSIBLE CAUSE
      Scale deposits on the chamber
      SOLUTION
      Clean the chamber and use water of good quality (refer to ANNEX 7).
    • Warning about saving to the USB (HTML and SCL files).
      The USB drive is disconnected or full. SOLUTION Check presence and condition of the USB drive. If the problem persists, contact an authorised W&H service partner.
    • Lisa 17/22
      The cycle report printer does not work.
      POSSIBLE CAUSE
      Printer not properly connected or not powered
      SOLUTION
      Check the data and the power connection to the printer.
    • Lisa 17/22
      When the sterilizer is connected to an automated water supply system: there is no clean water in the tank, but the automatic water filling does not fill the water.
      POSSIBLE CAUSE
      Water fill system not connected
      SOLUTION
      Connect the water fill system to the sterilizer (see ANNEX 7 for water quality requirements).

      POSSIBLE CAUSE
      When the water fill system attempted to fill the tank, water was temporarily unavailable
      SOLUTION
      Since water tank filling is attempted only once in-between cycle execution, this event inhibits water feeding. Switch the sterilizer OFF and then ON again.
      Check the external water supply system.
      Check for water leaks from the sterilizer.

      POSSIBLE CAUSE
      Faulty MIN water level sensor in the clean water tank
      SOLUTION
      Call service.
    • Lisa 17/22
      The sterilization (PROCESS) phase of a sterilization cycle was longer than expected.
      POSSIBLE CAUSE
      The chamber temperature dropped below the minimum threshold and the software performed a successful recovery
      SOLUTION
      Wait for cycle completion. If the problem occurs frequently, call technical service.
    • Lisa 17/22
      Warning about programmed maintenance.
      POSSIBLE CAUSE
      A component shall be replaced for the programmed maintenance of the sterilizer.
      SOLUTION
      Call service to order the requested component (door seal, dust filter, bacteriological filter...). See “Maintenance” chapter..
    • What should I do if I get a Warning about consumable replacement?
      Order the requested consumable (door seal and HEPA/bacteriological filter) and replace it. See the chapter “Maintenance” in the Instructions for Use.
    • What is the maximum noise level of the Lara, Lara XL and Lexa Plus sterilizer?
      The maximum noise level of Lara is 66.9 dB and the Lara XL/Lexa Plus are 70 dB.
  • Lina (24)
    • Do I need to carry out periodic testing on my W&H Sterilizer?
      All W&H sterilizers features test cycles (B&D/Helix test, Vacuum test). Compulsory and frequency of testing are regulated by local/national guidelines.
    • What is validation?
      Validation is a series of tests carried out with the use of independent specialist test equipment, as is necessary to demonstrate that the physical conditions required for sterilization, thermal disinfection and/or cleaning (i.e. temperature, pressure, time) are achieved.
    • Do I need to document the results of all periodic tests?
      Yes, all tests performed by the operator or user should be recorded in a logbook with the date and signature of the individual how carried out the test. Every Sterilizer and every thermo washer disinfector should have a logbook (file) in which test details pertaining to the lifecycle of the equipment (from purchase - disposal) are recorded. A logbook is provided as standard with the Premium Careplus Service Contract from W&H, or as an optional extra with the Premium Care Service Contract.
    • How long should I Keep periodic test records?
      Under current national decontamination guildance, all audit documents should be stored for at least two years and they should not be removed from the premises or destroyed.
    • Does my Lisa/Lina need to be commissioned from new?
      Yes, validation is needed for new equipment at installation and annually thereafter. It will also be necessary to validate equipment after any major repairs have been carried out.
    • Who should I use to carry out validation and maintenance on my Lisa/Lina?
      All validation and maintenance should be undertaken by the Competent Person (Decontamination) or Competent Person (maintenance).
    • How do I change consumable components on my sterilizer?
      Consumable replacement instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • How do I clean the water tanks and what products should I use?
      Water tank cleaning instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • How often should I de-scale my Thermoklenz?
      Water hardness can differ depending of the region in which the unit is located. Carrying out a water hardness test will enable you to gauge how hard the incoming water is. The frequency of de-scaling cycles will depend on the water hardness and the number of cycles run per week. W&H recommends that at least one de-scaling cycle be run each week. More frequent de-scaling cycles should be run if the washer disinfector has a heavier workload or if the water is hard. Additional information relating to these tests and how to carry out these tests can be found on the Video Tutorial section of this web site.
    • What water quality should I use with my Lisa/Lina?
      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 jeopardised. Consequently, only water with conductivity of less than 10 µS/cm in North America and 15 µS/cm for the rest of the world should be used for your W&H sterilizer. The Water treatment devices Multidem and Osmo are especially designed to prepare suitable water (see chapter “Water quality” in the Instructions for Use).
    • Should I pre-wrap and how long can I store my instruments after sterilization?
      Under current UK decontamination guidance, with a type B vacuum cycle, instruments should be pre-wrapped and once sterilized can be stored for up to 12 months. Wrapping should take place shortly after washing and disinfection. Under current UK decontamination guidance, with a type N cycle, instruments should not be pre-wrapped. Once sterilized, instruments can be immediately aseptically wrapped and stored for up to 12 months. Instruments should always be dry before they are placed in the purpose-designed packaging.
    • Lisa 17/22
      At the end of the cycle, there is residual water in the chamber
      POSSIBLE CAUSE
      Sterilizer not properly levelled
      SOLUTION
      Properly level the surface the sterilizer is placed on.

      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 MAINTENANCE)

      POSSIBLE CAUSE
      Load incorrectly placed
      SOLUTION
      Follow the recommendations as listed in ANNEX 2.
    • Lisa 17/22
      When starting a cycle, the chamber door locks but re-opens immediately. The “Open the door” message appears.
      POSSIBLE CAUSE
      Door seal not properly placed; seal sticking out
      SOLUTION
      Ensure that the door seal is correctly inserted around the whole circumference.

      POSSIBLE CAUSE
      Door jammed by external objects or by the load itself
      SOLUTION
      Remove any objects interfering with the chamber door. Check that the door does not push against the load or the chamber furniture.
    • Lisa 17/22
      The sterilizer enters into “Sleep mode” immediately after opening the chamber door.
      POSSIBLE CAUSE
      The chamber door has not been opened after the previous cycle had finished and the “Sleep mode delay” has expired
      SOLUTION
      Press the SLEEP MODE button to exit”.
    • Lisa 17/22
      The sterilizer remains switched OFF.
      POSSIBLE CAUSE
      The main switch or network circuit breaker is OFF
      SOLUTION
      Activate the main switch or network circuit breaker (ON).

      POSSIBLE CAUSE
      No voltage at the socket
      SOLUTION
      Check the electric circuit.

      POSSIBLE CAUSE
      The power cord is not connected properly
      SOLUTION
      Check and connect the power cord properly.
    • Lisa 17/22
      Water is leaking at the front of the sterilizer
      POSSIBLE CAUSE
      Leaks through the chamber door seal
      SOLUTION
      Clean or replace the door seal. Clean the chamber face side.

      POSSIBLE CAUSE
      Internal leak.
      SOLUTIONS
      Call technical service.
    • Lisa 17/22
      No cycles are stored in the cycle history menu
      POSSIBLE CAUSE
      An electronic board was replaced by service.
      SOLUTION
      None. The memory of the old board cannot be restored. Save periodically the history on the USB pen drive.
    • Lisa 17/22
      Corrosion or spots on instruments
      POSSIBLE CAUSE
      Tap water on instruments when placed in the sterilizer
      SOLUTION
      Ensure that instruments are 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 water of good quality (see ANNEX 7).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see ANNEX 2).

      POSSIBLE CAUSE
      Chamber, trays, tray rack dirty
      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 (aluminum, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (refer to ANNEX 2).

      POSSIBLE CAUSE
      Scale deposits on the chamber
      SOLUTION
      Clean the chamber and use water of good quality (refer to ANNEX 7).
    • Warning about saving to the USB (HTML and SCL files).
      The USB drive is disconnected or full. SOLUTION Check presence and condition of the USB drive. If the problem persists, contact an authorised W&H service partner.
    • Lisa 17/22
      The cycle report printer does not work.
      POSSIBLE CAUSE
      Printer not properly connected or not powered
      SOLUTION
      Check the data and the power connection to the printer.
    • Lisa 17/22
      When the sterilizer is connected to an automated water supply system: there is no clean water in the tank, but the automatic water filling does not fill the water.
      POSSIBLE CAUSE
      Water fill system not connected
      SOLUTION
      Connect the water fill system to the sterilizer (see ANNEX 7 for water quality requirements).

      POSSIBLE CAUSE
      When the water fill system attempted to fill the tank, water was temporarily unavailable
      SOLUTION
      Since water tank filling is attempted only once in-between cycle execution, this event inhibits water feeding. Switch the sterilizer OFF and then ON again.
      Check the external water supply system.
      Check for water leaks from the sterilizer.

      POSSIBLE CAUSE
      Faulty MIN water level sensor in the clean water tank
      SOLUTION
      Call service.
    • Lisa 17/22
      Warning about programmed maintenance.
      POSSIBLE CAUSE
      A component shall be replaced for the programmed maintenance of the sterilizer.
      SOLUTION
      Call service to order the requested component (door seal, dust filter, bacteriological filter...). See “Maintenance” chapter..
    • LINA PRO13-003
      What is the maximum noise level of the sterilizer?
      The maximum noise level of 66.5 dB(A) guarantees a quiet working environment.
    • What should I do if I get a Warning about consumable replacement?
      Order the requested consumable (door seal and HEPA/bacteriological filter) and replace it. See the chapter “Maintenance” in the Instructions for Use.
  • Lyla (24)
    • Do I need to carry out periodic testing on my W&H Sterilizer?
      All W&H sterilizers features test cycles (B&D/Helix test, Vacuum test). Compulsory and frequency of testing are regulated by local/national guidelines.
    • What is validation?
      Validation is a series of tests carried out with the use of independent specialist test equipment, as is necessary to demonstrate that the physical conditions required for sterilization, thermal disinfection and/or cleaning (i.e. temperature, pressure, time) are achieved.
    • Do I need to document the results of all periodic tests?
      Yes, all tests performed by the operator or user should be recorded in a logbook with the date and signature of the individual how carried out the test. Every Sterilizer and every thermo washer disinfector should have a logbook (file) in which test details pertaining to the lifecycle of the equipment (from purchase - disposal) are recorded. A logbook is provided as standard with the Premium Careplus Service Contract from W&H, or as an optional extra with the Premium Care Service Contract.
    • How long should I Keep periodic test records?
      Under current national decontamination guildance, all audit documents should be stored for at least two years and they should not be removed from the premises or destroyed.
    • Does my Lisa/Lina need to be commissioned from new?
      Yes, validation is needed for new equipment at installation and annually thereafter. It will also be necessary to validate equipment after any major repairs have been carried out.
    • Who should I use to carry out validation and maintenance on my Lisa/Lina?
      All validation and maintenance should be undertaken by the Competent Person (Decontamination) or Competent Person (maintenance).
    • How do I change consumable components on my sterilizer?
      Consumable replacement instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • How do I clean the water tanks and what products should I use?
      Water tank cleaning instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • What water quality should I use with my Lisa/Lina?
      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 jeopardised. Consequently, only water with conductivity of less than 10 µS/cm in North America and 15 µS/cm for the rest of the world should be used for your W&H sterilizer. The Water treatment devices Multidem and Osmo are especially designed to prepare suitable water (see chapter “Water quality” in the Instructions for Use).
    • Should I pre-wrap and how long can I store my instruments after sterilization?
      Under current UK decontamination guidance, with a type B vacuum cycle, instruments should be pre-wrapped and once sterilized can be stored for up to 12 months. Wrapping should take place shortly after washing and disinfection. Under current UK decontamination guidance, with a type N cycle, instruments should not be pre-wrapped. Once sterilized, instruments can be immediately aseptically wrapped and stored for up to 12 months. Instruments should always be dry before they are placed in the purpose-designed packaging.
    • Lisa 17/22
      At the end of the cycle, there is residual water in the chamber
      POSSIBLE CAUSE
      Sterilizer not properly levelled
      SOLUTION
      Properly level the surface the sterilizer is placed on.

      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 MAINTENANCE)

      POSSIBLE CAUSE
      Load incorrectly placed
      SOLUTION
      Follow the recommendations as listed in ANNEX 2.
    • Lisa 17/22
      When starting a cycle, the chamber door locks but re-opens immediately. The “Open the door” message appears.
      POSSIBLE CAUSE
      Door seal not properly placed; seal sticking out
      SOLUTION
      Ensure that the door seal is correctly inserted around the whole circumference.

      POSSIBLE CAUSE
      Door jammed by external objects or by the load itself
      SOLUTION
      Remove any objects interfering with the chamber door. Check that the door does not push against the load or the chamber furniture.
    • Lisa 17/22
      The sterilizer enters into “Sleep mode” immediately after opening the chamber door.
      POSSIBLE CAUSE
      The chamber door has not been opened after the previous cycle had finished and the “Sleep mode delay” has expired
      SOLUTION
      Press the SLEEP MODE button to exit”.
    • Lisa 17/22
      The sterilizer remains switched OFF.
      POSSIBLE CAUSE
      The main switch or network circuit breaker is OFF
      SOLUTION
      Activate the main switch or network circuit breaker (ON).

      POSSIBLE CAUSE
      No voltage at the socket
      SOLUTION
      Check the electric circuit.

      POSSIBLE CAUSE
      The power cord is not connected properly
      SOLUTION
      Check and connect the power cord properly.
    • Lisa 17/22
      Water is leaking at the front of the sterilizer
      POSSIBLE CAUSE
      Leaks through the chamber door seal
      SOLUTION
      Clean or replace the door seal. Clean the chamber face side.

      POSSIBLE CAUSE
      Internal leak.
      SOLUTIONS
      Call technical service.
    • Lisa 17/22
      No cycles are stored in the cycle history menu
      POSSIBLE CAUSE
      An electronic board was replaced by service.
      SOLUTION
      None. The memory of the old board cannot be restored. Save periodically the history on the USB pen drive.
    • Lisa 17/22
      Corrosion or spots on instruments
      POSSIBLE CAUSE
      Tap water on instruments when placed in the sterilizer
      SOLUTION
      Ensure that instruments are 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 water of good quality (see ANNEX 7).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see ANNEX 2).

      POSSIBLE CAUSE
      Chamber, trays, tray rack dirty
      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 (aluminum, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (refer to ANNEX 2).

      POSSIBLE CAUSE
      Scale deposits on the chamber
      SOLUTION
      Clean the chamber and use water of good quality (refer to ANNEX 7).
    • Warning about saving to the USB (HTML and SCL files).
      The USB drive is disconnected or full. SOLUTION Check presence and condition of the USB drive. If the problem persists, contact an authorised W&H service partner.
    • Lisa 17/22
      The cycle report printer does not work.
      POSSIBLE CAUSE
      Printer not properly connected or not powered
      SOLUTION
      Check the data and the power connection to the printer.
    • Lisa 17/22
      When the sterilizer is connected to an automated water supply system: there is no clean water in the tank, but the automatic water filling does not fill the water.
      POSSIBLE CAUSE
      Water fill system not connected
      SOLUTION
      Connect the water fill system to the sterilizer (see ANNEX 7 for water quality requirements).

      POSSIBLE CAUSE
      When the water fill system attempted to fill the tank, water was temporarily unavailable
      SOLUTION
      Since water tank filling is attempted only once in-between cycle execution, this event inhibits water feeding. Switch the sterilizer OFF and then ON again.
      Check the external water supply system.
      Check for water leaks from the sterilizer.

      POSSIBLE CAUSE
      Faulty MIN water level sensor in the clean water tank
      SOLUTION
      Call service.
    • Lisa 17/22
      The sterilization (PROCESS) phase of a sterilization cycle was longer than expected.
      POSSIBLE CAUSE
      The chamber temperature dropped below the minimum threshold and the software performed a successful recovery
      SOLUTION
      Wait for cycle completion. If the problem occurs frequently, call technical service.
    • Lisa 17/22
      Warning about programmed maintenance.
      POSSIBLE CAUSE
      A component shall be replaced for the programmed maintenance of the sterilizer.
      SOLUTION
      Call service to order the requested component (door seal, dust filter, bacteriological filter...). See “Maintenance” chapter..
    • Which is the maximum noise level of Lyla?
      The max. noise level of Lyla is 65.5 dB.
    • What should I do if I get a Warning about consumable replacement?
      Order the requested consumable (door seal and HEPA/bacteriological filter) and replace it. See the chapter “Maintenance” in the Instructions for Use.
  • Lisa (26)
    • Do I need to carry out periodic testing on my W&H Sterilizer?
      All W&H sterilizers features test cycles (B&D/Helix test, Vacuum test). Compulsory and frequency of testing are regulated by local/national guidelines.
    • What is validation?
      Validation is a series of tests carried out with the use of independent specialist test equipment, as is necessary to demonstrate that the physical conditions required for sterilization, thermal disinfection and/or cleaning (i.e. temperature, pressure, time) are achieved.
    • Do I need to document the results of all periodic tests?
      Yes, all tests performed by the operator or user should be recorded in a logbook with the date and signature of the individual how carried out the test. Every Sterilizer and every thermo washer disinfector should have a logbook (file) in which test details pertaining to the lifecycle of the equipment (from purchase - disposal) are recorded. A logbook is provided as standard with the Premium Careplus Service Contract from W&H, or as an optional extra with the Premium Care Service Contract.
    • How long should I Keep periodic test records?
      Under current national decontamination guildance, all audit documents should be stored for at least two years and they should not be removed from the premises or destroyed.
    • Does my Lisa/Lina need to be commissioned from new?
      Yes, validation is needed for new equipment at installation and annually thereafter. It will also be necessary to validate equipment after any major repairs have been carried out.
    • Who should I use to carry out validation and maintenance on my Lisa/Lina?
      All validation and maintenance should be undertaken by the Competent Person (Decontamination) or Competent Person (maintenance).
    • How do I change consumable components on my sterilizer?
      Consumable replacement instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • How do I clean the water tanks and what products should I use?
      Water tank cleaning instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website.
    • How often should I de-scale my Thermoklenz?
      Water hardness can differ depending of the region in which the unit is located. Carrying out a water hardness test will enable you to gauge how hard the incoming water is. The frequency of de-scaling cycles will depend on the water hardness and the number of cycles run per week. W&H recommends that at least one de-scaling cycle be run each week. More frequent de-scaling cycles should be run if the washer disinfector has a heavier workload or if the water is hard. Additional information relating to these tests and how to carry out these tests can be found on the Video Tutorial section of this web site.
    • What water quality should I use with my Lisa/Lina?
      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 jeopardised. Consequently, only water with conductivity of less than 10 µS/cm in North America and 15 µS/cm for the rest of the world should be used for your W&H sterilizer. The Water treatment devices Multidem and Osmo are especially designed to prepare suitable water (see chapter “Water quality” in the Instructions for Use).
    • Should I pre-wrap and how long can I store my instruments after sterilization?
      Under current UK decontamination guidance, with a type B vacuum cycle, instruments should be pre-wrapped and once sterilized can be stored for up to 12 months. Wrapping should take place shortly after washing and disinfection. Under current UK decontamination guidance, with a type N cycle, instruments should not be pre-wrapped. Once sterilized, instruments can be immediately aseptically wrapped and stored for up to 12 months. Instruments should always be dry before they are placed in the purpose-designed packaging.
    • Lisa 17/22
      At the end of the cycle, there is residual water in the chamber
      POSSIBLE CAUSE
      Sterilizer not properly levelled
      SOLUTION
      Properly level the surface the sterilizer is placed on.

      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 MAINTENANCE)

      POSSIBLE CAUSE
      Load incorrectly placed
      SOLUTION
      Follow the recommendations as listed in ANNEX 2.
    • Lisa 17/22
      When starting a cycle, the chamber door locks but re-opens immediately. The “Open the door” message appears.
      POSSIBLE CAUSE
      Door seal not properly placed; seal sticking out
      SOLUTION
      Ensure that the door seal is correctly inserted around the whole circumference.

      POSSIBLE CAUSE
      Door jammed by external objects or by the load itself
      SOLUTION
      Remove any objects interfering with the chamber door. Check that the door does not push against the load or the chamber furniture.
    • Lisa 17/22
      The sterilizer enters into “Sleep mode” immediately after opening the chamber door.
      POSSIBLE CAUSE
      The chamber door has not been opened after the previous cycle had finished and the “Sleep mode delay” has expired
      SOLUTION
      Press the SLEEP MODE button to exit”.
    • Lisa 17/22
      The sterilizer remains switched OFF.
      POSSIBLE CAUSE
      The main switch or network circuit breaker is OFF
      SOLUTION
      Activate the main switch or network circuit breaker (ON).

      POSSIBLE CAUSE
      No voltage at the socket
      SOLUTION
      Check the electric circuit.

      POSSIBLE CAUSE
      The power cord is not connected properly
      SOLUTION
      Check and connect the power cord properly.
    • Lisa 17/22
      Water is leaking at the front of the sterilizer
      POSSIBLE CAUSE
      Leaks through the chamber door seal
      SOLUTION
      Clean or replace the door seal. Clean the chamber face side.

      POSSIBLE CAUSE
      Internal leak.
      SOLUTIONS
      Call technical service.
    • Lisa 17/22
      No cycles are stored in the cycle history menu
      POSSIBLE CAUSE
      An electronic board was replaced by service.
      SOLUTION
      None. The memory of the old board cannot be restored. Save periodically the history on the USB pen drive.
    • Lisa 17/22
      Corrosion or spots on instruments
      POSSIBLE CAUSE
      Tap water on instruments when placed in the sterilizer
      SOLUTION
      Ensure that instruments are 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 water of good quality (see ANNEX 7).

      POSSIBLE CAUSE
      Organic or chemical residues on the instruments
      SOLUTION
      Clean, rinse and dry instruments before placing them in the sterilizer (see ANNEX 2).

      POSSIBLE CAUSE
      Chamber, trays, tray rack dirty
      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 (aluminum, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (refer to ANNEX 2).

      POSSIBLE CAUSE
      Scale deposits on the chamber
      SOLUTION
      Clean the chamber and use water of good quality (refer to ANNEX 7).
    • Warning about saving to the USB (HTML and SCL files).
      The USB drive is disconnected or full. SOLUTION Check presence and condition of the USB drive. If the problem persists, contact an authorised W&H service partner.
    • Lisa 17/22
      The cycle report printer does not work.
      POSSIBLE CAUSE
      Printer not properly connected or not powered
      SOLUTION
      Check the data and the power connection to the printer.
    • Lisa 17/22
      When the sterilizer is connected to an automated water supply system: there is no clean water in the tank, but the automatic water filling does not fill the water.
      POSSIBLE CAUSE
      Water fill system not connected
      SOLUTION
      Connect the water fill system to the sterilizer (see ANNEX 7 for water quality requirements).

      POSSIBLE CAUSE
      When the water fill system attempted to fill the tank, water was temporarily unavailable
      SOLUTION
      Since water tank filling is attempted only once in-between cycle execution, this event inhibits water feeding. Switch the sterilizer OFF and then ON again.
      Check the external water supply system.
      Check for water leaks from the sterilizer.

      POSSIBLE CAUSE
      Faulty MIN water level sensor in the clean water tank
      SOLUTION
      Call service.
    • Lisa 17/22
      The sterilization (PROCESS) phase of a sterilization cycle was longer than expected.
      POSSIBLE CAUSE
      The chamber temperature dropped below the minimum threshold and the software performed a successful recovery
      SOLUTION
      Wait for cycle completion. If the problem occurs frequently, call technical service.
    • Lisa 17/22
      Warning about programmed maintenance.
      POSSIBLE CAUSE
      A component shall be replaced for the programmed maintenance of the sterilizer.
      SOLUTION
      Call service to order the requested component (door seal, dust filter, bacteriological filter...). See “Maintenance” chapter..
    • Lisa 17/22
      What is the maximum noise level of the sterilizer?
      The maximum running noise level of 58.5 dB(A)ensures a quiet, comfortable working environment.
    • What should I do if I get a Warning about consumable replacement?
      Order the requested consumable (door seal and HEPA/bacteriological filter) and replace it. See the chapter “Maintenance” in the Instructions for Use.
    • What is the maximum noise level of the Lisa sterilizer?
      The max. noise level of Lisa 2019 is 64.3 dB.

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