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Morita SIGNO G20 Operation Manual

Dental treatment unit
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TU110(EX)-X,01B.　2019.9.TO
Operation Manual
Model
Dental Treatment Unit
Model　ＴＵ１１０
Thank you for purchasing the SIGNO TypeG20.
For optimum safety and performance,read this manual thoroughly before
using the unit and pay close attention to the warnings and cautions.
Keep this manual in a handy place for ready reference.

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  • Page 1 TU110(EX)-X,01B.　2019.9.TO Operation Manual Model Dental Treatment Unit Model　ＴＵ１１０ Thank you for purchasing the SIGNO TypeG20. For optimum safety and performance,read this manual thoroughly before using the unit and pay close attention to the warnings and cautions. Keep this manual in a handy place for ready reference.

  • Page 2: Table Of Contents

    Contents Contents Attention........................3 [1]General Safety and Operation Instructions..........4 [2]Parts Identification....................5 [3]Installation......................6 [4]Preliminary Adjustments and Connections..........7 [5]Operation......................9 llustrated Guide to Cautionary Points during chair movement......11 1.Main Switch..................12 2.Foot Control..................13 3.Dentist’s Switch Panel................15 (1)Auto Positioning Switches............ 15 (2)Auto Positioning Emergency Stop......... 16 (3)Set Switches...............

  • Page 3: Attention

    CONTENTS/Attention 5.Flushing Out the Water System............... 71 6.Cleaning Other Components and Sufaces..........73 7.Vacuum Tank Cleaning................75 8.Clean the Drain Trap................77 9.Inspect and Clean the Oil Drain Filter............79 10. Clean and Dismantle of Vacuum Syringe/Saliva Ejector......80 11. Replacing the Baterial Filters and their Cases.......... 81 [7]Inspection......................

  • Page 4: General Safety And Operation Instructions

    [1]General Safety and Operating Instructions [1]Genral Safety and Operating Instructions 1. Safety Symbols and Indicators This manual uses a system of safety symbols to promote and insure safe operation and prevent injuries, accidents and damage. (1)Learn to recognize and understand the meaning of the various symbols shown below. (2)After reading this manual,keep it in a handy place for ready reference.

  • Page 5: Parts Identification

    [2]Parts Identification [2]Parts Identification <Main Unit> Parts Opeating Light １ Over Arm Auto Filler Basin Basin Unit Water Snap-on Connection Assistant’s Instrument Holder Basin Unit Door Assistant’s Side Arm Rest Headrest Backrest Foot Control Seat Tray Arm Dentist’s Tray Dentist’s Switch Panel Tray Handle Dentist’s Instrument Holder Floor Arm...

  • Page 6: Installation

    WARNING The equipment must be installed by a qualified and trained professional speci- fied by J.Morita Corp. according to the conditions specified in the Installation Standards Manual. >>Otherwise, there is a lisk that an accident or damage to equipment may occur.

  • Page 7: Preliminary Adjustments And Connections

    To adjust an item, refer to the chart and then consult the part of the Operation section (5.Operation) of this manual noted there or the installation manual. Contact your local dealer or J.Morita Corp.concerning any points that are not clear, or items not appearing in the diagrams and chart below.
  • Page 8 [4]Preliminary Adjustments and Connections 2. Instrument Connections CAUTION Before using the equipment, connect all the main in- strument tubes. As for the threeway syringe, connect the syringe body as well as the tube.(except for the one- touch detachable WS90,option). >>Otherwise, air or water could leak out. All instruments must be in their specified holders ex- cept when in use.

  • Page 9: Operation

    [5]Operation [5]Operation WARNING Do not place any objects below or near moving parts such as the seat and back rest or within the range of their movement. Keep hands, fingers and feet clear of all moving parts.(See “Illustrated Guide to Cautionary Points”) >>Otherwise, fingers or other body parts could be pinched resulting in injury or damage.
  • Page 10 [5]Operation CAUTION If a patient uses a pacemaker, do not use the ultrasonic scaler and electrocautery scalpel at the same time. >>There is a risk of health problems due to malfunction of the pacemaker. Do not use pointed tools to push the various panel switches or scratch the surface covering of the switches.

  • Page 11: Llustrated Guide To Cautionary Points During Chair Movement

    [5]Operation ◆ Illustrated Guide to Cautionary Points ▲: Watch out for moving (During chair movement) or rotating parts etc. Always check for safety before moving the chair manually or with △: IIndicates an emrgency auto-positioning. stop is required In particular,pay attention to the points noted in the illus tration below so that the patient or other equipment is not hit or pinched, etc.

  • Page 12: Main Switch

    Time to save power mode can be changed.(60 or 120 minutes) Please contact the dealer whom you purchased the dental treatment unit from or a nearby J.Morita Corporation if you would like to change the setting.

  • Page 13: Foot Control

    [5]Operation 2. 2. Foot Control CAUTION Please do not assume any dangerous positions when riding on the foot control, foot pedal or operation levers. >>Not paying sufficient attention to the above points could result in injury or damage. Once the foot control gets wet, do not use the same place again while it is still wet. Please restart use after moisture has been wiped off with the main switch turned off, and after it has dried naturally.
  • Page 14 (There is a case that changeable operations are limited.) Please contact the dealer whom you purchased the dental treatment unit from or a nearby Morita Corporation if you would like to change the setting. **:There is, depending on the combination of optional equipments, a case that a part of functions can not be operated with the extended function lever.

  • Page 15: Dentist's Switch Panel

    [5]Operation 3. 3. Dentist’s Switch Panel (3)Set Switches (4)Instrument Settings (1)Auto-positioning Switches Display Instrument Pick Up Indicators (1)Auto-positioning Switches <Auto-positioning Switches> These switches are used to raise and lower the seat and back rest. Position 1　Position 2　　Ｓ　　　　Ｒ　 The seat and back rest automatically move into one of the preset positions when one these switches is pressed once.

  • Page 16: Auto Positioning Emergency Stop

    [5]Operation 3. (2)Auto Positioning Emergency Stop Use the procedures listed below to stop the chair in the midst of auto- positioning is being carried out. In the case of a Safety Stop, the chair stops automatically and goes into Avoidance Mode. This means it will reverse its direction slightly after stopping.

  • Page 17: Set Switches

    [5]Operation 3.(2) 3)Safety Stop and Avoidance Mode Auto-positioning will stop if something presses up against on the ＜ Safety Switches ＞ assistant’s instrument holder (A) or the step (B). After checking the appropriate areas and removing （Ａ） ADVICE any obstacles, resume normal operation. After a safety stop has been executed, the unit goes into Avoidance Mode.

  • Page 18: Instrument Switches And Displays

    [5]Operation 3. (4)Instrument Switches and Displays Hand piece Light ON/OFF DIisplay Speed　　 Rotation　　 Spray ON/OFF Range Direction Instrument Pick Up Indicators The indicator lights for these switches show if they are on or off or what the setting is. Settings can all stored in memory. WARNING Always stop using an instrument before changing any settings.
  • Page 19 [5]Operation 3. 3) Instrument Switches and Displays ＜ Instrument Settings ＞ These switches work for which ever instrument has been picked up. Each press of the switch changes the setting. The lamp shows what the setting is. Refer to the chart below: Switch Lamp Content...
  • Page 20 [5]Operation 3. 5) Air Turbine Setting There are no peculiar settings for air turbine handpiece. ＜ Air Turbine Settings ＞ 　　　　　　　　　　　　Spray　　 Light 6) Micromotor Setting Press the switch to change the setting. ＜ Micromotor Settings ＞ The status of the lamp indicates the setting. Switch Lamp Content...

  • Page 21: Chair Lock

    [5]Operation 3. (5)Chair Lock/Handpiece Lock <Menu select> The menu selection display on lock is brought up if the set switch is hold down for 2 seconds while all dentist side instruments are put away in the (Nomal) instrument holder. Do setting when the need arises. Setting is memorized until a next change is set.
  • Page 22 [5]Operation 3. 2) Hand piece Lock This will disable the selected dentist’s instrument. Use this if an instrument has been disconnected. The locked instrument cannot be used and will not respond if it is picked up. a)Press the set switch to bring up the HP lock display. Hand piece Lock Display b)Press a switch corresponding to a handpiece to be locked and then...

  • Page 23: Assistant's Switch Panel

    [5]Operation 4. 4. Assistant’s Switch Panel (4)Operating Light on/off Switch * (1)Auto-positioning Switches (5)Flushing Switch* (2)Manual Cup Filling Switch (3)Vacuum tank Auto-cleaning Switch* Illustration above shows the switches on the assistant’s switch panel. A switch is disabled if the unit is not equipped with the corresponding function.

  • Page 24: Instrument Holders

    [5]Operation 4.5. (5)Flushing Switch* Flushing Lamp This only works if the unit is equipped with a flushing device.** Press this switch to flush the water inside the unit out through the main tubes. Flushing Switch For details, refer to [5] 7. of this manual. 5.
  • Page 25 [5]Operation 5. (1)Dentist’s 5 Instrument Holder The holder arm may be moved horizontally. Firmly grip both sides of the holder and carefully move it into the desired position. 1)Top Cover Removal The holder’s top cover can be removed for easy cleaning and disinfect- ing.
  • Page 26 [5]Operation 5. (2)Assistant’s Holder WARNING Never put a heavy load on the assistant’s holder or apply excessive force to it. >>This could seriously damage it. Whenever you move the holder or its support, pay close attention to safety especially concerning the following points: 1.
  • Page 27 [5]Operation 5. 2)Assistant’s Auxiliary Tray WARNING Never put a load greater than 10 N (1 kgf) on the assistant’s auxiliary tray. >>This could seriously damage it if the support suddenly went down. Do not put a medical vial, an alcohol lamp, or other things (mainly, liquids)on the assistant’s auxiliary tray that could cause an injury if they fall.

  • Page 28: Instruments

    [5]Operation 6. 6. Instruments WARNING Refer to the individual operator’s manuals for the air turbine hand pieces, micromotor, ultrasonic scaler and other similar instruments for details and instructions on how to connect and operate these instruments. >>Incorrect operation and handling of these instruments could result in an accident resulting in injury or damage to the instrument.
  • Page 29 [5]Operation 6. (1)Air Turbine Hand piece 1)Operation Take the handpiece out of its holder and step on the foot pedal to op- Splay ON(Basic) erate it. Pedal Rotaion Splay When the spray is on, rotation and spay can be operated by the foot pedal.
  • Page 30 [5]Operation 6. (3)Micromotor 1)Operation Splay ON(Micromotor) Take the micromotor out of its holder and step on the foot pedal to operate it. Pedal Rotaion Splay When the spray is on, spray starts the moment the foot pedal is pressed. Step Variable 2)Rotation speed of variable range Micromotor Speed...
  • Page 31 [5]Operation 6. (4)Three-way Syringe WARNING Always check the temperature settings for water warmers, if the unit is equipped with them. >>If the heaters are set too high, the patient could be burned or the equipment could be damage. CAUTION During hot weather,turn the heater off. >>Otherwise,over heating could shorten the working life of the main tube and the heater.
  • Page 32 [5]Operation 6. 3)Warm Water thermal effect CAUTION If warm air is not needed in the summer or at any other time, disconnect the heater inside the tube to turn it off. >>If the heater gets too hot, the heater and the tube could be damaged, and the working life of both will be shortened.
  • Page 33 [5]Operation 6. (5)Three-way Syringe WS201 <Removable Nozzle> CAUTION Before using the three-way syringe, make sure to check that the screw fixing the tube at the low end of the syringe is tightened up. If the screw is not tightened up, tighten it up with your fingers. >>If the tube comes off the syringe, the head of the tube will spring out suddenly.
  • Page 34 [5]Operation 6. (7)Vacuum Syringe VS-110 1)Operation a)Suction Power ON/OFF This syringe begins to operate when it is taken off its holder on the assistant’s side and stops when it is returned to its holder. b)Adjustment of suction power <Disassembly> Suction power can be adjusted by sliding the plate on the center of the Body syringe body.
  • Page 35 [5]Operation 6. (9)Ultrasonic Scaler* 1)Attaching the handpiece With LED light LED with out light LED without light Align the notch on the handpiece side with the mark on the tube side and insert the syringe. With LED Light Align the handpiece side mark with the tube side mark and insert the syringe.
  • Page 36 [5]Operation 6. (10)Air and Water Flow Air and water flow can be adjusted in the following ways: 1)Dentist Instruments Adjustment knobs are located on the back of the dentist’s tray with labels that show how to use them. Knobs(dentist side） Adjustment ○...

  • Page 37: Basin Unit

    [5]Operation 7. 7. Basin Unit WARNING Never lean on or sit on the basin unit. Do not set heavy objects on it or allow any excessive force to be applied to it. >>Any of the above actions could cause the unit to suddenly turn resulting in an accident, bodily injury or damage to equipment.
  • Page 38 [5]Operation 7. 2)Basin Unit Panel Assistant’sThree-way Syringe Warmer Temperature Adjustment Adjustment Auto Filler Water Adjustment Air Snap-on Connector (See[5]6.(10)in this manual) Auto Filler Lamps Water Snap-on Connector Basin Manual Water Warmer Switch Water knob for Snap-on Connectors These are the adjustments and connections on the basin unit panel. Their uses are explained below, and in sections [5] 7.
  • Page 39 [5]Operation 7. 4)Flushing Device * Flushing Bowl This is used to flush out all the water lines inside the unit. Do this once a day. Switch On the main switch and follow the direction in the display. a)Set the flushing bowl up on the basin. Line up and fit the gauge on top of the bowl to the end of the auto filler for correct positioning.
  • Page 40 [5]Operation 7. c)After connecting all the tubes, press the flushing switch. Flushing Lamp The flushing procedure will be performed automatically. It takes approximately 6 minutes. Switch lamps will light up to show the progress. Flushing Switch <Stages> Stage 1:Three-way water flows (continues to end of procedure) Stage 2:Basin water flows (approximately 30 seconds) Stage 3:Water flows from auto filler and vacuum and saliva ejector Flushing Lamp...
  • Page 41 [5]Operation 7. (2)Warmer CAUTION Whenever the warmer is turned on pay close attention to how hot the water is. Turn the warmer off whenever it is not needed such as in the summer. >>Otherwise, the water could get too hot and burn the patient. Also it could over- heat and breakdown.
  • Page 42 [5]Operation 7. (3)Water and Air Snap On Connectors CAUTION Ensure these connections are correctly made before using. >>If the connection is not correctly fixed in place, water or air could leak or the joint could come off. If necessary, a supply of water or air can be drawn from this connection on the basin unit panel.
  • Page 43 [5]Operation 7. (4)Basin CAUTION Do not drop or bump the basin when it is taken off the unit. Do not scrub it vigorously or use hard or sharp objects on it. >>Any of the above could damage or spoil the basin. Do not leave chemicals with dark or strong colors in the basin for too long.
  • Page 44 [5]Operation 7. 3)Take Off Basin and Basin Nozzle The basin and its nozzle can be taken off for cleaning. a)Turn the main switch off. If the main switch is on, the sensor for the auto ADVICE filler will be activated and water will splash around the area.

  • Page 45: Water Fountain

    [5]Operation 8. 8.Water Fountain CAUTION Do not bump the fountain or expose it to other types of physical shocks or excessive stress. >>This could damage the fountain and cause it to stop working. Never run water through the fountain if its nozzle has been removed. >>This would result in water shooting straight up in the air.
  • Page 46 [5]Operation 8. 3)Manual Cup Filling Hold down the manual cup filler switch on the assistant’s side. Manual cup filler switch Water will fill the cup only while the switch is held down. <Assistant’s Side> Ensure a cup is in place before doing this; other- ADVICE wise, water will be splashed around.

  • Page 47: Dentist's Tray

    [5]Operation 9. 9.Dentist’s Tray WARNING Never set objects weighing more than 30N(3kgf) on the tray table. Do not use force to move the tray and do not subject it to bumps or other physical shocks. >>A load greater than 30N could cause the tray to fall down resulting in bodily injury or damage to equipment.
  • Page 48 [5]Operation 9. 2)Adjust Action of Movable Arm Movable Arm The action of the movable arm can be adjusted depending on how much weight is placed on the tray. Adjust it in the following way: knob a)For a heavy load (or to make the up and down action stiffer) Tighten the movable arm’s knob to make its action stiffer and keep it from sagging up a heavy load.
  • Page 49 [5]Operation 9. (3)Cart Type* WARNING For optimum safety, pay attention to be the following points when using the cart type tray: 1)Make sure patients and other people are aware of the hoses on the floor and do not lean on them. 2)Do not move the cart with excessive force or rapidly.
  • Page 50 Pull the cup out straight, holding the waste container stand. If you grasp the cup hard, the contents of the cup ADVICE will spout. When you run out of cups or caps, order a new supply from your local dealer or J.Morita Corp.
  • Page 51 Spread a sheet of this paper on top of the tray. Replace the paper whenever necessary. Contact your local dealer or J.Morita Corp. for a new supply of paper. (7)Silicon Tray Sheet * Lay this on top of the tray.

  • Page 52: Amalgam Separator

    [5]Operation 10. 10. Amalgam separator * CAUTION Do not switch ON the main switch when the auto filler is connected with cup. >>Otherwise,error reaction of amalgam separator exchenge signal will indicated. Ensure the auto filler has been removing from the cup before switch ON the main switch.

  • Page 53: Spittoon Valve

    [5]Operation 11. 11. Spittoon Valve * Please follow the directions in the manual. Spittoon Valve * Cut Filter (See[6]4.) *:option...

  • Page 54: Film Viewers

    Various film viewers can be used even after the main unit has been purchased and installed. (This depends somewhat are what other optional equipment is being used.) Contact your local dealer or the J. Morita Corp. to purchase a film viewer. (1)Triple Viewer PFV95* <Multi-type>...
  • Page 55 [5]Operation 12. 3)Brightness Adjustment The brightness for all three light modes can be adjusted. Use the dial on the right side to adjust the brightness from low to high. The light tube works best at a room temperature ADVICE of 20c to 25c. It may flicker or be somewhat dim if the room is chilly during the winter etc., but, it will work normally as soon as the internal temperature goes up.

  • Page 56: Operating Light

    [5]Operation 13. 13.Operating Light WARNING For the handling of the operating light, make sure to follow the operator manual attached to the product. >>Improper handling will cause an unexpected accident or trouble. Do not bump or jar the light head or the light arm. Do not get the light wet;...

  • Page 57: Headrest

    [5]Operation 14. 14.Headrest WARNING Keep fingers, hair, clothes etc. away from the moving parts of the headrest. >>An injury could result from fingers being pinched or hair etc. being caught in the moving parts. Do not adjust the position of the headrest while the patient is on the chair. >>Damage and trouble of the ratchet part by the load and its attendant sudden movement will injure the patient’s neck or head.
  • Page 58 [5]Operation 14. 1)In and out of the slide bar Infinite length adjustment is possible within the range shown in the right illustration. Grasp the headrest firmly with both hands and then let it slide to a position you like. Head 2)Angle Adjustment Neck Angle is adjustable at regular intervals.

  • Page 59: Armrest

    [5]Operation 15. 15. Armrest Dentist’s side* (1)Armrest on Assistant’s Side Assistant’s side The armrest on the assistant’s side is fixed in place and cannot be ad justed. (2)Movable Armrest on the dentist’s side* WARNING Keep fingers clear of the area where the armrest on the dentist’s side rotates.

  • Page 60: Display

    Additional parts can be installled after purchase. (However, additional ca- bling work will be necessary in this case.) Please contact your local dealer or J.Morita Corp.for details about addi- tional options. Due to the size and weight limtations of the screen dis- CHECK play, not all displays on the market can be used.

  • Page 61: After Use

    [5]Operation 17. 17. After Use WARNING Turn the main switch off whenever the unit is not being used. If the unit will not be used for a considerable length of time, unplug the main power cord and close the main valves for both the air and water. >>This will prevent various types of potential problems from occuring such as fire or accidents due to leaking electricity, water leakage or both.
  • Page 62 [5]Operation 17. (2)For Extended Shut-down Periods When the unit will not be used for an extended period of time, or in cases when it is not working properly, turn off the main switch and close the main water valve. Follow the procedure below. <Be sure to turn off the water when undertaking the following procedures or when the following conditions exist>...

  • Page 63: Fuses

    If the fuse blows again, this may indicate a prob- CHECK lem with the wiring. In this case, stop using the unit and turn the main switch off. Then contact your local dealer or J.Morita Corp. to have the unit in spected.

  • Page 64: Maintenance

    [6] Maintenance 1. [6]Maintenance WARNING Always turn the main switch off before cleaning and performing other main- tenance procedures. Also close the air and water valves if necessary. >>Otherwise bodily injury or equipment damage could result from accidental operation, electrical shocks or other types of accidents. Always wear surgical gloves to prevent contamination when cleaning and performing other maintenance procedures.

  • Page 65: Autoclave Sterilization/Ethanol Disinfection>Instrument And Component List

    [6]Maintenance 1. <Autoclave Sterilization / Ethanol Disinfection> Bold lettering indicates instru- ments or components that can be Instrument and Component List autoclaved or disinfected with ethanol. Standard lettering indicates instruments and components that can only be dis- infected by wiping them with ethanol. ３...
  • Page 66 [6] Maintenance 1. (1)Sterilization for: Air Turbine Handpiece Micromotor Attachment Ultra Sonic Scaler Tip and Body Operating Light Handle Cover This depends on the model; refer to the separate operator’ manuals for the instruments installed on your unit. (2)Sterilization for: Vacuum Syringe Tip and Body Three-way Syringe WS-201 Nozzle Saliva Ejector Nozzle&Body...

  • Page 67: Ethanol Disinfection

    [6] Maintenance 2. 2. Ethanol Disinfection CAUTION Use only disinfecting ethanol(76.9-81.4vol%). >>Other kinds of alcohols and solvents can cause discoloration or damage the material. Do not allow ethanol to seep inside the unit. Be especially careful around openings for joints, shafts and switches. Do not use excessive amounts of ethanol.

  • Page 68: Other Method Of Disinfection And Sterilization

    (2)Sterilization and Disinfection Methods Not Mentioned Methods of sterilization and disinfection not mentioned in this manual could damage instruments and components. Contact your local dealer or the Morita Corp. before using sterilization or disinfection methods not referred to in this manual.

  • Page 69: Cleaning The Basin Unit Component

    [6]Maintenance 4. 4. Cleaning the Basin Unit Component CAUTION Clean the items mentioned as described below at least once a day. >>Otherwise, the equipment could malfunction, its performance could deteriorate, or lines could become plugged. (1)Inside of Main Tube for Vacuum Syringe and Saliva Ejector Use the procedure below to clean these tubes after finishing with each patient:...
  • Page 70 (5)Vacuum System Cleaning CAUTION Use only cleaners recommended by the J.Morita Corp. and follow the in- structions that come with the product. >>Using inappropriate products or methods can damage tubes or other compo - nents and result in malfunctions, water leakage, loss of vacuum power and other problems.

  • Page 71: Flushing Out The Water System

    [6]Maintenance 5. 5. Flushing Out the Water System CAUTION Flush out the water system in the way described below at least once a day before treatment. This is especially important if the unit has not been used for a day or more such as after a holiday.
  • Page 72 [6] Maintenance 5. 4)Air Turbine a)Take the handpiece out of its holder and turn on the spray switch. b)Take the handpiece off its main tube. c)Hold the end of the tube over the basin and step on the foot pedal. Run water through the tube for at least one minute.

  • Page 73: Cleaning Other Components And Sufaces

    [6] Maintenance 6. 6. Cleaning Other Components and Surfaces WARNING Do not allow water, chemical solutions or ethanol to remain on the surfaces or inside the equipment. Do not wash the switch panels or auto filler with water; the water could seep inside.
  • Page 74 Depending on the color, some leather seat and backrest covers may not be disinfected with ethanol. If necessary, leather coverings can be replaced for a standard fee. Contact your local dealer or the J. Morita Corp. for details. (2)Other Components and Surfaces Clean as frequently as necessary.

  • Page 75: Vacuum Tank Cleaning

    [6] Maintenance 7. Once a Month 7.Vacuum Tank Cleaning CAUTION Use the procedure of manual to inspect the vacuum tank at least once a month. >>Otherwise, the performance could deteriorate, these instruments could malfunc- tion or their lines could get plugged up. After cleaning make sure the vacuum tank and its flexible drain tube are properly and securely installed and connected.
  • Page 76 [6] Maintenance 7. (4)Turn the tank to free it from its holder. Turn the tank to the left until the tab on the holder comes free and then pull the tank down to take it off. Tank Holder (5) Wash the tank inwall with running water. 　...

  • Page 77: Clean The Drain Trap

    [6]Maintenance 8. 8. Clean the Drain Trap CAUTION Clean the drain trap at least once a month. >>Otherwise performance could deterioratem the vacuum could malfunction or the vacuum lines could get plugged up. After cleaning make sure the drain trap filter, cap and sleeve are properly and securely installed.
  • Page 78 [6] Maintenance 8. (5)Replace the drain filter in its original position. Put the filter in the cap with its handle facing down and replace both the cap and the filter at the Drain Trap same time. Filter Ensure the filter holder is facing down in advance. CHECK (Handle) Sleeve...

  • Page 79: Inspect And Clean The Oil Drain Filter

    If the exhaust air does not flow properly, stop using the CHECK handpiece and contact your local dealer or the J.Morita Corp. More water will tend to mix with the exhaust air if the o-rings on the connection end of the air turbine hand- piece are broken.

  • Page 80: Clean And Dismantle Of Vacuum Syringe/Saliva Ejector

    [6] Maintenance 10. 10. Clean and Dismantle of Vacuum Syringe/Saliva Ejector CAUTION Do not conduct ultrasonic cleaning for disassembled parts of the adjustment lever. Also, do not rub the surface of the parts with a sharp apparatus. >>Surface of the parts can be damaged, and it would disturb to movement. Once in a month or in case the movement of the suction adjustment part goes sticky or hard, clean disassembled parts of the vacuum syringe.

  • Page 81: Replacing The Baterial Filters And Their Cases

    [6] Maintenance 11. Once a Year 11. Replacing the Baterial Filters and their Cases Keep fingers clear of the electric panel and electric components inside the plumbing pit and do not get this parts wet. Also never move the chair while the plumbing pit is opened up.
  • Page 82 [6]Maintenance 11. For the equipment of bacteria filter, replace it once a year (water/air) with filter case. Use the procedure below to replace the filters. (1)Raise the chair to the position where the pit cover can be taken off and ＯＦＦ...
  • Page 83 [6]Maintenance 11. (5)Unscrew the filter cases inside the plumbing pit. O-Ring The water filter case will be full of water and some water ADVICE will drip out of its holder. Hae a cloth ready to wipe up any Bacteria Filter water that spills out.

  • Page 84: Inspection

    If the equipment does not operate correctly or seems to be out of order, refer to [8]Troubleshooting on page 51 of this manual and consult your local dealer or J.Morita Corp. >>Haphazard disassembly, repair or modification could be extremely dangerous.
  • Page 85 [7]Inspection 1. ■ Inspect these items every day before using the equipment: Inspection Item Response or Remedy Reference Check for loose or wobbly chair, light arm, Adjust or tighten. basin unit, seat, instrument holders etc. [5]13. Check for obstacles beneath the seat and Remove any obstacles and create a clear around the chair.(See CAUTION at the area around the equipment.
  • Page 86 In addition to the daily inspections listed on the previous page, perform the following inspection once every 6 months. If any problems or abnormal conditions are found, contact your local dealer or the J.Morita Corp. to resolve the problem as soon as possible. Main Dental Treatment Unit and Chair Item...
  • Page 87 [7]Inspection 2. Item Description Record Air Pressure Operate the hand pieces and check the pressure gauge on the back of the tray. (Refer to the hand pieces’ operation manuals for the correct pressure reading.) Water and air Check the main tube connection and exhaust air line for: 1) connections and lamp.
  • Page 88 Contact J.Morita Corp. or your local dealer to order parts. It may not be possible for J.Morita Corp.to supply parts for units more than 10 years old. Signo Type G20 Replacement Parts List...

  • Page 89: Troubleshooting

    [8]Troubleshooting [8]Troubleshooting Use the chart below to solve operational problems. Contact J.Morita Corp. or your local dealer if the problem cannot be solved by following the chart below or for malfunctions and defects not mentioned in the chart. Check following before requesting repair...

  • Page 90: Warranty And Repairs

    (2)After the Expiration of the Warranty Period Make your repair request to the original sales outlet or your nearest Morita dealer. If the product can be restored to normal operating condition by repairs and parts replacement, the owner will bear the expenses of the repairs.

  • Page 91: Specifications

    [11]Specifications [11]Specifications General Designation Dental Treatment Unit Electric shock Class I (permanent installation) protection Type B with applied device Name Signo G20 Repair Model TU110 Classification Intended purpose This product, installed in a dental EMC Standard Conforms to clinic, locates a patient to a...
  • Page 92 [11]Specifications Regarding the danger related to elec- Regarding environmental conditions tromagnetic interference and other at the time of transportation and stor- kinds of interference. age. 1.Storage method This product may malfunction in environments sub- (1)Temperature:-10-70 degrees℃ ject to electromagnetic interference. (2)Humidity:10-85 RH% (A location where dew does not form) Installing devices around communication equipment...

  • Page 93: Emc Technical Description

    EMC. The use of accessories and cables other than those specified, with the exception of replacement parts sold by J. MORITA TOKYO MFG CORP. may result in increased emissions or decreased immunity of the TU110. Where possible this product should not be placed adjacent to other equipment, and should not be use with other equipment.
  • Page 94 [12]EMC Technical Description Guidance and Manufacturer’s Declaration-Electromagnetic Immunity The TU110 is intended for use in the Electromagnetic environment specified below. The customer or the user of the TU110 should assure that it is used in such an environment. Electromagnetic Immunity test IEC 60601 test level Compliance level environment-guidance...
  • Page 95 [12]EMC Technical Description Guidance and manufacturer’s declaration-electromagnetic immunity The TU110 is intended for use in the Electromagnetic environment specified below. The customer or the user of the TU110 should assure that it is used in such an environment. Electromagnetic Immunity test IEC 60601 test level Compliance level environment-guidance...
  • Page 96 [12]EMC Technical Description Recommended separation distances between Portable and mobile RF communications equipment and the TU110 The TU110 is intended for use in the Electromagnetic environment in which radieted RF disturbances are controlled. The customer or the user of the TU110 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the TU110 as recommended bellow, according to the maximum output power of the communications equipment.
  • Page 97 [12]EMC Technical Description Attachment 1. Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless communications equipment Test Band Maximum Distance IMMUNITY Frequency Service Modulation Power TEST LEVEL (MHz) (MHz) (V/m) Pulse TETRA 400 380 - 390 modulation 18Hz ± 5kHz deviation 430 - 470 GMRS 460, FRS 460...
  • Page 98 Manufacturing Division 7129, KOMURO, INA-MACHI, KITAADACHI-GUN, SAITAMA-KEN, 362-0806 Japan Phone:+81-48-723-2621 Sales Division Osaka Office: 33-18, 3-Chome Tarumi-Cho, Suita, Osaka, 564-8650 Japan Phone:+81-6-6380-2525 Tokyo Office: 11-15, 2-Chome Ueno, Taito-Ku, Tokyo, 110-8513 Japan Phone:+81-3-3834-6161...

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