FAQ

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

Surgical Devices

  • Piezomed (7)
    • How does wireless control of the Implantmed and Piezomed work?
      W&H has introduced a new concept in oral surgery and implantology. The wireless foot control S-NW communicates with the surgical units via a dongle/receiver, which can be connected to the W&H unit.wireless foot control
    • How long is the useful service life of the instrument detection?
      The instrument detection is located in the LED socket and is automatically replaced at the same time as the LED socket.
    • How long is the useful service life of the LED?
      The user must replace the LED socket as soon as the protective coating on the LED discolours and the luminous power is impaired as a result. The length of time this takes can differ depending on the type of sterilizer or sterilization process.

      The instrument detection?
      The instrument detection is located in the LED socket and is automatically replaced at the same time as the LED socket.
    • Can Piezomed instruments also be used on third-party devices?
      No
      a. Different thread
      b. Third-party device cannot find the correct resonance point – instrument fails to oscillate
    • How long do the instruments last and when should they be replaced?
      The useful service life of the instruments is determined by the length of time they are used reprocessing. Sterilization cycles have only marginal influence.
      a. Instruments need to be replaced
      - If there is a loss of power while working
      - Where there is visible damage on the working part or the shank of the instrument.
      b. Saws must be replaced if
      - Teeth are broken off
      - Teeth are worn
      c. Diamond-coated instruments must be replaced
      - As soon as the diamond coating is worn
    • How are instruments prepared for cleaning?
      a. Preparation in the ultrasonic bath:
      - Place the instruments in the instrument tray and lower into the ultrasonic bath.
      - Use cleaning agents and disinfectants suitable for hand instruments (probes, mirrors, forceps, etc.).
      DO NOT USE a bur bath, as this is very aggressive.
      - After cleaning in the ultrasonic bath, rinse adequately with water to remove any remnants of the cleaning agent and disinfectant from the coolant channels.
      - Blow dry with compressed air after rinsing
      - Replace dried instruments in the instrument tray and package for sterilization

      b. Mechanical preparation in the cleaning unit and disinfector
      - Use the cleaning adapter for cleaning units and disinfectors (see Instructions for Use – Accessories)
      - After preparation in the cleaning unit and disinfector, check that the coolant channels are dry and, if necessary, dry again with compressed air.
    • Can third-party instruments be used on the Piezomed?
      No
      a. Different thread
      b. The Piezomed instrument detection cannot detect third-party instruments

Straight & Contra-angle Handpieces

  • Proxeo TWIST (2)
    • Can I use any Prophy cup that is available on the market for the WP-66 W?
      In order to benefit from the advantages of the LatchShort system and to support the longevity of the contra-angle handpiece (WP-66 W), we recommend using W&H Prophy cups. However, it is possible for Prophy cups from standard latch systems (with a shaft of 2.35 mm) to be used.
    • Why should I use a prophylaxis contra-angle handpiece (WP-66 W)?
      Generally, prophylaxis contra-angle handpieces feature a seal on the head that prevents the ingress of saliva and paste. This extends the lifespan of the contra-angle handpiece.

      The most effective removal of discolouration that at the same time protects the enamel and dentine as much as possible, depends on the polishing speed, i.e. revolutions per minute, among other things. With a speed ratio of 4:1 (four revolutions of the motor mean one revolution of the cup), the revolution speed of the Prophy cup is reduced. This means during application, there is no risk of paste splattering.

Accessories

Reprocessing Devices

  • ThermoKlenz (9)
    • 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.
    • 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.
    • 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.
    • 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.
    • 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.
    • 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).

Accessories

  • W&H Osstell ISQ module (7)
    • 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.
    • How does the measurement of the ISQ work?
      > To measure the ISQ of an implant, you first screw a 'SmartPeg' into the placed implant. The SmartPeg, with its magnet on top, works like a small tuning fork. The magnet on the SmartPeg is ‘hit’ with magnetic pulses, from the probe, which makes the SmartPeg vibrate. Due to the stiffness in the interface between the implant surface and the bone the SmartPeg will vibrate accordingly. The more dense the bone is the higher stability and the higher ISQ value.
      isq scale
    • 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.
    • Is the ISQ scientifically proven?
      The Osstell ISQ technology is proven by over 700 scientific studies. These studies have shown, that torque and ISQ correlate.
    • What’s the difference between torque and ISQ?
      Torque is a one time, static measurement at the time of placement of the implant and cannot be repeated later on in a non-invasive way. Osstell ISQ measures the lateral stability of the implant and the measurements can be repeated in a non-invasive, dynamic way to monitor the development of osseointegration.
    • Is every new Implantmed compatible with the W&H Osstell ISQ module?
      Yes. All control units SI-1023 can be upgraded with the W&H Osstell ISQ module
    • Can the Implantmed unit be upgraded by the surgeon or does it require a technical specialist?
      The module is easily attached to the right side of the Implantmed with the help of the provided quick manual. The module is plug-n-play via a USB connection.Implantmed with ISQ model comparison
  • Piezomed Instruments (4)
    • Can Piezomed instruments also be used on third-party devices?
      No
      a. Different thread
      b. Third-party device cannot find the correct resonance point – instrument fails to oscillate
    • How long do the instruments last and when should they be replaced?
      The useful service life of the instruments is determined by the length of time they are used reprocessing. Sterilization cycles have only marginal influence.
      a. Instruments need to be replaced
      - If there is a loss of power while working
      - Where there is visible damage on the working part or the shank of the instrument.
      b. Saws must be replaced if
      - Teeth are broken off
      - Teeth are worn
      c. Diamond-coated instruments must be replaced
      - As soon as the diamond coating is worn
    • How are instruments prepared for cleaning?
      a. Preparation in the ultrasonic bath:
      - Place the instruments in the instrument tray and lower into the ultrasonic bath.
      - Use cleaning agents and disinfectants suitable for hand instruments (probes, mirrors, forceps, etc.).
      DO NOT USE a bur bath, as this is very aggressive.
      - After cleaning in the ultrasonic bath, rinse adequately with water to remove any remnants of the cleaning agent and disinfectant from the coolant channels.
      - Blow dry with compressed air after rinsing
      - Replace dried instruments in the instrument tray and package for sterilization

      b. Mechanical preparation in the cleaning unit and disinfector
      - Use the cleaning adapter for cleaning units and disinfectors (see Instructions for Use – Accessories)
      - After preparation in the cleaning unit and disinfector, check that the coolant channels are dry and, if necessary, dry again with compressed air.
    • Can third-party instruments be used on the Piezomed?
      No
      a. Different thread
      b. The Piezomed instrument detection cannot detect third-party instruments

Straight & Contra-angle Handpieces

Sterilizers

  • Lisa (29)
    • 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.
    • 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 saving to the USB (HTML and SCL files)
      POSSIBLE CAUSE
      The USB mass storage is not connected or not properly connected to the sterilizer.
      SOLUTION
      Check presence and connection of the USB pen drive. If the problem persist, 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..
    • 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 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
      The cycle commences but there is no pressure/temperature rise
      POSSIBLE CAUSE The thermal overload switch is open SOLUTION Reset the thermal overload switch (see RESETTING THE THERMAL OVERLOAD). POSSIBLE CAUSE
      Electric – electronic fault

      SOLUTION
      Call technical service.
    • 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
      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).
    • Lisa 17/22
      Instruments are turning brown or black.
      POSSIBLE CAUSE
      Incorrect temperature selected
      SOLUTION
      Select a sterilization cycle featuring a lower sterilization temperature. Follow the instructions of the instrument manufacturer.
    • 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
      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
      At the end of the cycle the display reads “Open the door” but opening the door is impossible.
      POSSIBLE CAUSE
      The chamber is in vacuum due to an internal malfunction
      SOLUTION
      Switch the sterilizer OFF: this releases any internal pressures allowing the chamber door to be opened. Call technical service if the problem persists.

      POSSIBLE CAUSE
      The bacteriological filter is blocked
      SOLUTION
      Remove the bacteriological filter to get the pressure released. Replace the filter. Note that bacteriological filters need to be replaced every 400 cycles.
    • 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.
    • 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.
    • What periodic tests do I need to carry out on my Lisa/Lina?
      Periodic testing is set out in the current national decontamination guidance document. In addition to a weekly safety inspection and air leakage test, a daily test should be performed by the operator or user and will normally consist of: - A steam penetration test (W&H recommend the Helix Test) - An automatic Control Test Note: These tests may be carried out at the same time. 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.
    • 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 Lisa/Lina?
      Information and videos relating to consumable components and how to replace them can be found on the Consumables & Accessories and Video Tutorial section of this web site.
    • How do I clean the water tanks and what products should I use?
      Information and videos relating to the cleaning of the water tanks and cleaning products can be found on the Video Tutorial section of this web site.
    • What water quality should I use with my Lisa/Lina?
      The use of good quality water in your W&H sterilizer is required to prevent the formation of lime-scale within the internal components. Lime-scale can seriously harm your sterilizer and therefore good quality water with a conductivity reading of not more than 15µS should be used with your W&H sterilizer.
    • 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 you can determine what needs to be sent in, or sometimes the problem can even be resolved over the phone.
    • 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.
    • Do I need to carry out periodic testing on my Lisa/Lina?
      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.
  • Lina (13)
    • 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.
    • 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.
    • 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.
    • What periodic tests do I need to carry out on my Lisa/Lina?
      Periodic testing is set out in the current national decontamination guidance document. In addition to a weekly safety inspection and air leakage test, a daily test should be performed by the operator or user and will normally consist of: - A steam penetration test (W&H recommend the Helix Test) - An automatic Control Test Note: These tests may be carried out at the same time. 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.
    • 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 Lisa/Lina?
      Information and videos relating to consumable components and how to replace them can be found on the Consumables & Accessories and Video Tutorial section of this web site.
    • How do I clean the water tanks and what products should I use?
      Information and videos relating to the cleaning of the water tanks and cleaning products can be found on the Video Tutorial section of this web site.
    • What water quality should I use with my Lisa/Lina?
      The use of good quality water in your W&H sterilizer is required to prevent the formation of lime-scale within the internal components. Lime-scale can seriously harm your sterilizer and therefore good quality water with a conductivity reading of not more than 15µS should be used with your W&H sterilizer.
    • 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 you can determine what needs to be sent in, or sometimes the problem can even be resolved over the phone.
    • 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.
  • MS Sterilizer (12)
    • 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.
    • 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.
    • What periodic tests do I need to carry out on my Lisa/Lina?
      Periodic testing is set out in the current national decontamination guidance document. In addition to a weekly safety inspection and air leakage test, a daily test should be performed by the operator or user and will normally consist of: - A steam penetration test (W&H recommend the Helix Test) - An automatic Control Test Note: These tests may be carried out at the same time. 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.
    • 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 Lisa/Lina?
      Information and videos relating to consumable components and how to replace them can be found on the Consumables & Accessories and Video Tutorial section of this web site.
    • How do I clean the water tanks and what products should I use?
      Information and videos relating to the cleaning of the water tanks and cleaning products can be found on the Video Tutorial section of this web site.
    • What water quality should I use with my Lisa/Lina?
      The use of good quality water in your W&H sterilizer is required to prevent the formation of lime-scale within the internal components. Lime-scale can seriously harm your sterilizer and therefore good quality water with a conductivity reading of not more than 15µS should be used with your W&H sterilizer.
    • 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 you can determine what needs to be sent in, or sometimes the problem can even be resolved over the phone.
    • 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.

Electric Motor

Turbines

Straight & Contra-angle Handpieces

Accessories

  • Seal2 (2)
    • 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.
    • 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 you can determine what needs to be sent in, or sometimes the problem can even be resolved over the phone.

Water Treatment Devices

  • Multidem (2)
    • What water quality should I use with my Lisa/Lina?
      The use of good quality water in your W&H sterilizer is required to prevent the formation of lime-scale within the internal components. Lime-scale can seriously harm your sterilizer and therefore good quality water with a conductivity reading of not more than 15µS should be used with your W&H sterilizer.
    • 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 you can determine what needs to be sent in, or sometimes the problem can even be resolved over the phone.
  • Osmo (2)
    • What water quality should I use with my Lisa/Lina?
      The use of good quality water in your W&H sterilizer is required to prevent the formation of lime-scale within the internal components. Lime-scale can seriously harm your sterilizer and therefore good quality water with a conductivity reading of not more than 15µS should be used with your W&H sterilizer.
    • 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 you can determine what needs to be sent in, or sometimes the problem can even be resolved over the phone.

Straight & Contra-angle Handpieces

Laboratory Devices

Cordless Devices

Straight & Contra-angle Handpieces

Saw Handpieces

Prosthodontic Screwdriver

Air Scaler

Piezo Scaler

Air Motor

Couplings