SERVICE MANUAL R200T ELECTRONIC AIR PURIFIER WARNING: RISK OF ELECTRIC SHOCK This servicing manual is for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating manual unless you are qualified to do so.
PART I GENERAL DESCRIPTION ON AIR CLEANING INDOOR AIR QUALITY 1-1 Particulates 1-1 Gases, Vapors and Odors 1-1 Source Control 1-2 Ventilation 1-2 Air Cleaning 1-2 AIR CLEANING TECHNOLOGY 1-3 Mechanical Filtration 1-3 Electronic Filtration 1-3 Electret Media Filter 1-4 Negative Ion-Negative Ion Generator 1-4 Ozone-Ozone Generator 1-4 OZONE LEVEL AND THEIR EFFECTS 1-5 Activated Carbon Filter 1-6 Ultraviolet Light 1-6 Photo catalyst 1-7 ENGLISH CONTENTS
PART I GENERAL DESCRIPTION ON AIR CLEANING 1. IN DOOR AIR QUALITY If you could see the air you breathe under a microscope, you might be in for a surprise. The air quality is much more terrible than you may think. In fact, floating in indoor air is a "soup" of particles too small to be seen by your naked eye. But it is large enough to cause problems. Visible dust makes up only 1% of all the particles in the air. The vast majority of particles are microscopic.
PART I GENERAL DESCRIPTION ON AIR CLEANING A wide variety of molds also can produce mycotoxins at various times during their lifecycles. Building occupants can experience potentially serious health problems if they are exposed to high levels of these compounds, but this is rare in most indoor environments. Although becoming a lesser issue in public buildings, ETS is still found in many homes, hotels, casinos, and in some restaurants and bars.
PART I GENERAL DESCRIPTION ON AIR CLEANING 2. AIR CLEANING TECHNOLOGY When you are trying to repair the air purifiers, make sure you understand the technologies used by the air purifier and the potential issues that may be inherent in that technology which could effect the efficiency of the air purifier and your health. Most of air purifiers may use multiple technologies in their design.
PART I GENERAL DESCRIPTION ON AIR CLEANING Electret media filter-synthetic (Hybrid Filters) Electret media filter is a hybrid of a mechanical filter and electrostatic filter or an ion generator in an integrated single filter. The media filter made from synthetic fibers is inherently negatively charged in the manufacturing process and retains a charge which attracts airborne particles that are trapped and retained within the fibers in the conventional methods of impingement.
OZONE LEVELS AND THEIR EFFECTS Data from IOA Edited by Den (Zdenek) Rasplicka - Ozone Services ppm = Parts per million volume air concentration 0.001 ppm Lowest value detectable by hypersensitive humans. Too low to measure accurately with elaborate electronic equipment. 0.003 ppm Threshold of odor perception in laboratory environment, 50 per cent confidence level. 0.003 ppm~0.010 ppm The threshold of odor perception by the average person in clean air. Readily detectable by most normal persons.
PART I GENERAL DESCRIPTION ON AIR CLEANING Ultraviolet (UV) Light UV light is not visible to the human eye. It refers to the part of the wavelength spectrum below visible violet light and above x-rays and gamma rays. All light is a form of electromagnetic radiation. The distinguishing aspect of UV light is the wavelength which is longer than x-rays but shorter than visible light.
PART I GENERAL DESCRIPTION ON AIR CLEANING Photo catalytic oxidation Photocatalyst The key to PCO is the photo catalyst. Titanium dioxide (TiO2) is a semiconductor photo catalyst with the band gap energy of 3.2eV. When this material is irradiated with photons of less than 385 nm, the band gap energy is exceeded and an electron is promoted from the valence band to the conduction band.
PART II AIR CLEANING TECHNOLOY OF THE UNIT FEATURES AND SPECIFICATIONS 2-1 EXPLODED VIEW OF THE UNIT 2-2 PRE FILTER 2-3 Cleaning the Pre filter Regularly 2-3 Pre filter Ground Plate 2-3 ELECTRONIC CELL 2-4 How Does the Electronic Cell Work 2-4 Exploded View of the Cell 2-5 Part Numbers and Names of the Cell 2-5 Cleaning the Electronic Cell 2-6 Ozone Generation of the Cell 2-6 Discoloration of the Cell 2-6 ACTIVATED CARBON FILTER 2-7 Replacing the Activated Carbon Filter 2-7 UV L
PART II AIR CLEANING TECHNOLOY OF THE UNIT FEATURES AND SPECIFICATIONS The air purifier functions as an air cleaner by helping to disinfect airborne microorganisms and removing particulates from the air. The centrifugal fans of the unit draw air through the front panel on the front of the unit. Then it passes through the Pre-filter, the Electronic cell, the Activated carbon filter and the UV-Photo catalytic sterilization chamber. The purified air is then released through the outlet on the top of the unit.
PART II AIR CLEANING TECHNOLOY OF THE UNIT EXPLODED VIEW OF THE UNIT In order to fix the problems listed in the troubleshooting part, firsts of all, you will need to know the parts of the unit. 30 29 26 23 22 28 24 27 25 21 17 20 16 18 19 14 7 13 31 32 43 15 6 4 33 34 12 5 11 9 8 42 39 38 10 40 37 41 2 7.1 3 36 1 35 2-2 1. Front Panel (Air Intake Grill) 40. Circuit Board Protector 2. Magnetic Catcher 41. Main Circuit Board 3. Ground Contact Plates 42. Interlock Switch 4.
PART II AIR CLEANING TECHNOLOY OF THE UNIT 2.1 PRE FILTER The pre filter is an important part of the unit. Large particles (lint, hair) are caught by the pre filter so to protect the electronic cell. Cleaning the Pre filter Regularly To ensure optimum performance from the air purifier, the pre filter and cell must be cleaned regularly-every one to three months. Washing frequency will vary depending on the number of family members, pets, activities (such as cooking or woodworking) and smoking habits.
PART II AIR CLEANING TECHNOLOY OF THE UNIT How Does the Electronic Cell Work? The high voltage power supply provides the cell high voltage to the ionizer section and low voltage to the collector section through the two power contact terminals. If the power supply is broken the cell cannot work, failing to collect the particulates in the air. 1 3 1 6 Fig. 2.2-1 Remove the electronic cell. Stop the operation and unplug the power plug from the electrical outlet. Open the front panel and take out the cell.
PART II AIR CLEANING TECHNOLOY OF THE UNIT Exploded view of the electronic cell The cell is mainly composed of aluminum ionizer section ground plates, two kinds of aluminum collector plates (positive plates and ground plates), two kinds of aluminum tubes and its rods, tungsten ionizing wires, ceramic insulators (square and round shape), power contact epoxy board and screws. 6.4 6.5 6.6 6.1 6.7 6.8 6.9 6.16 6.10 6.11 6.15 6.12 6.14 6.17 6.18 6.2 6.13 ENGLISH 6.3 Fig. 2.
PART II AIR CLEANING TECHNOLOY OF THE UNIT Cleaning the electronic cell In order to keep the air purifier operating at peak efficiency, it is important to wash the electronic cell regularly. Washing frequency will vary depending on the air quality where the unit operates. If the air is of very poor quality, the efficiency of the cell will degrade rapidly, and may necessitate weekly cleaning. Under normal operating conditions, the cell should be cleaned every one to three months.
PART II AIR CLEANING TECHNOLOY OF THE UNIT 2.3 ACTIVATED CARBON FILTER Activated carbon, the universal adsorbent, has a capacity for virtually all vapor contaminants and will adsorb and retain a wide variety of chemicals at the same time. The adsorb diffuses thru the surface film to the macropore structure.
PART II AIR CLEANING TECHNOLOY OF THE UNIT 2.5 NEGATIVE ION GENERATOR Studies about negative ions have shown that some people become moody, tired, depressed, or experience difficulty concentrating when negative ion counts are low, or when positive ion counts are high, such as in front of a computer monitor. Negative ions help eliminate pollen, mold spores, dust, pet dander, and many other allergy causing particulates from the air we breathe.
PART III ELECTRICAL SYSTEM OF THE UNIT CONTENTS 3-1/3-1A/3-1B 3-2 3-3 3-3 3-3 3-4 3-4 3-5 3-6 3-6 3-6 3-7 3-8 3-9 3-9 3-10 3-12 3-13 ENGLISH WIRING SCHEMATIC DIAGRAM POWER CORD, FUSE AND INTERLOCK SWITCH Electrical power cord Fuse Interlock switch ELECTRICAL CIRCUIT BOARD Main circuit board Display circuit board HIGH VOLTAGE POWER SUPPLY AND UNIT POWER CONTACT BOARD High voltage power supply Unit power and ground contact terminals DISCHARGE SWITCH Discharge switch in the unit ODOR SENSOR Why the odor sen
PART III ELECTRICAL SYSTEM OF THE UNIT WIRING SCHEMATIC DIAGRAM FOR R200xxx UNITS In order to fix the problems correctly, you will need to know the electrical wire arrangement.
PART III ELECTRICAL SYSTEM OF THE UNIT Gas sensor Electronic cell Control board Yellow green Collector Display panel Green Y. Green D C Ionizer Odor sensor Motor capacitor F E Remote control receiver Black Red B A High voltage generator Red Ver.2.
PART III ELECTRICAL SYSTEM OF THE UNIT DIFFERENT WIRING ARRANGEMENT To simplify the wiring arrangement, the units will have some different wiring arrangements. 3 4 H 2 L G H H L G L G 6 7 2 8 5 9 1 8 5 4 2 1 2 6 6 3 7 9 Main circuit board-A Fig. 3-1 Units starting with ser.#J200xxx.
PART III ELECTRICAL SYSTEM OF THE UNIT 3.1 POWER CORD, FUSE AND INTERLOCK SWITCH CONNETIONS It is necessary for you to understand how the power cord, fuse and interlock switch are connecting together before you learn the other electrical system of the unit (Fig. 3.1-1). 1. Ground wire: The ground wire of the power cord is securely fixed at the metal bottom of the unit so that all the metal parts of the unit is grounded. 2.
PART III ELECTRICAL SYSTEM OF THE UNIT Electrical power cord The unit uses a grounding type plug, rating for 16-18 AWG. This plug will only fit into a grounded power outlet. If the plug does not fit into the outlet, contact a qualified person to install the proper outlet. Do not alter the plug in any way. The power cord has three wires, the green colour Ground, the white color Live line and the black color Neutral wire. The power cord is secured on the back of the unit by power cord strain relief bushing.
PART III ELECTRICAL SYSTEM OF THE UNIT 3.2 ELECTRICAL CIRCUIT BOARDS The main circuit board and the display circuit board are most important parts of the unit. Pressing any buttons on the control panel will control the main circuit board through the display circuit board wire for the unit to carry out the desired functions.
PART III ELECTRICAL SYSTEM OF THE UNIT Display circuit board The display circuit board is located inside the plastic control panel cover. The circuit board is connected to the main circuit board by display circuit board wire. If the display circuit board wire connections are loosened, or circuit boards are broken there will no display lights or incorrect display indicator lights on the display panel (Fig. 3.2-3).
PART III ELECTRICAL SYSTEM OF THE UNIT 3.3 HIGH VOLTAGE POWER SUPPLY AND UNIT POWER CONTACT BOARD Ground wire High voltage power supply The power supply provides high and low voltages to the cell through the power contact terminals. If the power supply is broken the electronic cell cannot create electrical field in the cell, failing to capture the particles which are passing through the cell. It is necessary to monitor the power supply working condition when the unit is working.
PART III ELECTRICAL SYSTEM OF THE UNIT 3.4 DISCHARGE SWITCH The electronic cell will normally maintain a painfully high voltage charge when you pull out the cell without stopping the unit. In fact, the high voltage power supply is designed to discharge the cell automatically. To discharge the cell automatically, the power supply needs 3-6 seconds after stopping the operation. It means that the cell will be no charge if the customer stops the operation before taking out the cell.
PART III ELECTRICAL SYSTEM OF THE UNIT Discharge switch in the unit It is necessary to discuss how the discharge switch is working in the 200T unit. When the front panel (Air intake) is closed the bottom portion of the front panel will push down the switch so that the voltage wire plate is separating from the ground plate (Fig. 3.4-1), meaning if the front panel is closed the discharge switch does work (Fig.3.4-3).
PART III ELECTRICAL SYSTEM OF THE UNIT 3.5 ODOR SENSOR (GAS SENSOR) The unit comes with an odor sensor. The odor sensor can sense smoke, ammonia, benzene and alcohol. In fact, the odor sensor continuously monitors the air quality through the sensor window on the plastic control panel cover as long as the unit is plugged in. The odor sensor is connected to the circuit board. The odor sensor will send signals to the main circuit board through the display circuit board wire (Fig. 3.5-1).
PART III ELECTRICAL SYSTEM OF THE UNIT 3.6 FAN MOTOR Electric motor and capacitor Electric motors can be divided into two types: Alternating Current (AC) motors and Direct Current (DC) motors. A DC electric motor will not run when supplied with AC current, nor will an AC motor run with DC current. AC motors are further subdivided into single phase and three phase motors. Single phase AC electrical supply is what is typically supplied in a home.
PART III ELECTRICAL SYSTEM OF THE UNIT The motor capacitor is secured to the left fan housing side plate by one screw (Fig. 3.6-2). Capcitor CBB61 6uf+5% Capcitor 250V ac 50/60Hz Fig. 3.6-2 The Motor capacitor is secured at the left fan housing metal plate by one screw. The motor has 7 electrical wires: two white color wires are for capacitor, one green-yellow color for ground and the rest four wires are for High speed (Red), Medium speed (Blue), Low speed (Black) and for common (Yellow). See Fig. 3.
PART III ELECTRICAL SYSTEM OF THE UNIT 3.7 SPEAKER The speaker of the unit produces melody when you start unit, press the buttons or shut off the unit. The speaker is composed of speak, speaker wire and connector. The speaker is located in the speaker holder and attaches to the unit case by its magnetic. The speaker wire is connected to the main circuit board (Fig. 3.7-1). If the unit is no melody, you should check if the speaker wire connection is connected loosened or replace the speaker.
PART III ELECTRICAL SYSTEM OF THE UNIT 3.8 REMOTE CONTROL Generally, there are two types of remote controls: infrared (IR), and radio frequency (RF). Infrared remote controls work by sending pulses of infrared light to a device, while RF remote controls use radio waves in much the same way. Radio Mircowave Infrared Visible Ultraviolet X-Ray Gamma Ray Infrared light is also known as plain-old "heat.
PART IV DISPLAY PANEL OF THE UNIT CONTENTS Operating the unit 4-1 Switch the airflow rate 4-2 Setting the operation time 4-3 Auto operation 4-3 Negative ion discharge 4-3 Filter life and UV lamp indicator lights 4-4 HOW TO RESET THE ACTIVATED 4-5 CARBON FILTER AND UV LAMPS Using the remote control Pushing the reset button on the main circuit board 4-5 4-5 ENGLISH DISPLAY INDICATOR LIGHTS AND BUTTONS 4-1
PART IV DISPLAY PANEL OF THE UNIT 4.1 DISPLAY INDICATOR LIGHTS AND BUTTONS The unit has a display panel on the control panel, displaying the current operating modes. 1. Displays what speed the system is operating on. 2. Built-In off timer: 1hour, 2hours and 4hours off timer. 3. Negative ion indicator light is on when the ions being emitted. 4. When the Auto indicator light is on, the unit will select the correct fan speed automatically according to the air pollutant level the sensor detected. 5.
PART IV DISPLAY PANEL OF THE UNIT Switch the airflow rate When the power plug is inserted into the wall outlet all the indicator lights on the display panel will light up for 2 seconds with a melody from the speaker (Fig. 4.1-2). If some indicator lights do not light up you will need to check the display circuit board. Red R When the melody stops the CHECK light will turn green (Fig. 4.1-3).
PART IV DISPLAY PANEL OF THE UNIT Setting the operation time Press the "TIMER" button to select the time for operation. Each time it is pressed the timer setting switches as shown below with green indicator light: "1h"---"2h"---"4h"--- (Cancel) Note: When the set time is reached, the operation will automatically stop. The set time can be changed if the button is pressed while the time is operating. At AUTO mode, you also can set the operation time. Pressing the TIMER button once...
PART IV DISPLAY PANEL OF THE UNIT FILTER and UV LAMP indicator lights It is hard to decide when the activated carbon filter should be replaced. The reason is the different atmosphere needs the different time for filter replacement. To assure optimum performance of the unit, it is recommended that the activated carbon filter should be replaced regularly. The time for replacement will vary depending on the number of family members, pets, activities (such as cooking or woodworking) and smoking habits.
PART IV DISPLAY PANEL OF THE UNIT 4.2 HOW TO RESET THE ACTIVATED CARBON FILTER AND UV LAMP After replacing the activated carbon filter or UV lamp, you will need to reset them, otherwise the indicator lights will flash continuously without stopping. In the old model, the unit will automatically shut off until you reset them. There are two ways to reset the unit.
PART V TROUBLESHOOTING NO POWER 5-1 CHECK INIDCATOR LIGHT FLASHING 5-6 NO FAN, INCORRECT AIR FLOW 5-12 NO UV LIGHT 5-15 THE BUTTONS DO NOT WORK 5-17 MELODY (CHIMES) FAILURE 5-18 FILTER AND UV LAMP RESET PROBLEM 5-19 SPARK BETWEEN HIGH VOLTAGE 5-22 TERMINAL AND SCREW DISCHARGE SIWTCH SPARK ELECTRICAL SHOCK 5-23 5-25 ENGLISH CONTENTS
REQUIRED TOOLS AND OPEN THE BOTTOM PLATE In order to fix the problems listed, you need to prepare the following necessary tools. All tools can be purchased at Canadian Tire.
PART V TROUBLESHOOTING 5.1 NO POWER When the unit is plugged in, there are no display indicator lights on the control panel and no melody. The buttons and remote control do not start the unit. Most of time, this problem occurs with the interlock switch breakdown. However, there are other reasons. In order to make sure what causes this problem, you will have to prepare yourself for some electrical work, have the necessary tools ready and proceed with the following steps.
PART V TROUBLESHOOTING 5.1.1 Check the electrical outlet and the front panel (Air Intake) Sometimes, the unit does not operate because of the electrical outlet failure. Make sure the power plug is inserted into the wall outlet correctly, or try to reinsert the power plug (5.1.1-1). Check if other electrical appliances using the same electrical outlet are working. If the electrical outlet is correct, go head and check the front panel. There is an actuator at the right bottom inside the front panel (Fig. 5.1.
PART V TROUBLESHOOTING 5.1.3 Check the fuse Now that the interlock switches are no problem, you should go ahead to check the fuse. Remove the fuse and visually check it - The fuse holder is located on the back of the unit. In some units, you will need to remove the front panel to find the fuse holder which is located on the bottom of the unit (Fig. 5.1.31~2). - With a flat screw driver, open the fuse holder cover and remove the fuse.
PART V TROUBLESHOOTING After replacing the damaged fuse, the new fuses are still blown again as soon as the unit is plugged in. As you replace the blown fuse with a new one and try to operate the unit, you find the new fuse is still blown out with unknown reasons. To fix this problem, you have to spend time to check all the electrical wires in the unit. - Check if the power cord wire jackets are damaged.
PART V TROUBLESHOOTING Finally check the fan motor connection Plug the fan motor (4#) connection to the main circuit board and start the unit by pressing the POWER button on the control panel. Press the SPEED button (Fig. 5.1.3-8). If the fuse is suddenly blown out, you will need to replace the motor capacitor. See 6.8 REPLACE THE FAN MOTOR CAPACITOR. After replacing the motor capacitor, the fuse is still blown out, you have to replace the fan motor. See 6.7 REPLACE THE FAN MOTOR.
PART V TROUBLESHOOTING 5.2 CHECK INDICATOR LIGHT FLASHING When the unit is turned on, the Check Unit indicator light flashes and you hear warning beep sound. Most of time, this problem is due to damaged electronic cell, high voltage power supply failure or damaged discharge switch. However, there are other reasons. In order to make sure what causes this problem you will have to prepare yourself for some electrical work, have the necessary tools ready and proceed with the following steps.
PART V TROUBLESHOOTING CHECK indicator light flashing When you open the bottom plate you can see the twin red color wires (Power supply signal wire), which are connecting the power supply and the main circuit board (Fig. 5.2-3, No.4-signal wire). The microprocessor on the main circuit board is detecting the voltage on the signal wire when the unit is turned on. As long as the voltage on the signal wire is less than 1.
PART V TROUBLESHOOTING 5.2.1 Check the electronic cell Check if the cell is wet It is extremely important to dry the cell thoroughly before starting the unit. If the cell is wet, there will be a short circuit in the cell through the wet ceramic insulators, causing the CHECK indicator light flashing (See page 5-7). Further more, if the cell has been not completely dried before using for many times the ceramic insulators will be cracked down (Fig. 5.2.1-1~2).
PART V TROUBLESHOOTING Use an ohmmeter to check the electronic cell for short circuits On the bottom plate of the cell, there are 3 different power contact terminals. 1-Ionizer terminal: Connecting to ionizer wire latch, providing high voltage of the power supply (See 2.2 ELECTRONIC CELL). 2-Collector terminal: Connecting to the positive collector plates, providing low voltage of the power supply. 3-Ground terminal: Connecting to the cell frame and all of the grounded collector plates.
PART V TROUBLESHOOTING 5.2.2 Check the power supply and the main circuit board If the CHECK indicator light still flashes after you remove the cell , go ahead to check the high voltage power supply. Check the high voltage output of the power supply - Have your high voltage probe ready. Red to red voltage ohmmeter input and black to black. The high voltage probe shown is 1000:1, meaning 1000 volt at the probe should be 1 volt dc at ohmmeter. - Set the ohmmeter in voltage DC range of 20V (Fig. 5.2.2-1).
PART V TROUBLESHOOTING 5.2.3 Check the voltage on the power supply signal wire If the high voltage or low voltage of the power supply is OK, but the CHECK light still flashes, you should check the voltage on the power supply signal wire with ohmmeter (Fig. 5.2.3-1). It should read close to 1.3V dc, if not, try to replace the wire and check again. If the reading still shows less than 1.3V dc or zero, the C10 resistance is damaged, you will need to replace the high voltage supply ( See 3.
PART V TROUBLESHOOTING 5.3 NO FAN AND INCORRECT AIR FLOW When the unit is turned on, the fan doesn't blow properly. When the speed is switched, the fan has incorrect speed rates. Most of time, this problem is due to damaged motor capacitor, electric motor, or motor wire connection loose or main circuit board failure. However, there are other reasons.
PART V TROUBLESHOOTING 5.3.1 NO FAN No fan, incorrect display lights and the buttons do not work properly When the unit is powered on, the display lights show incorrect and some buttons do not work properly. To fix this problem, you will need to proceed with the following steps. - Open the bottom plate and fasten the display circuit board wire connection (Fig. 5.3.1-1).
PART V TROUBLESHOOTING Check the motor capacitor and fan motor If the motor cable output voltages of the main circuit board are correct, you have to go ahead to check the fan motor capacitor or fan motor (Fig. 5.3.1-4). - Remove the unit upper cover and fan motor front cover to find the motor capacitor (See 6.8 REPLACE THE FAN MOTOR CAPACITOR). - If the motor still does not run correctly after replacing the motor capacitor, you will go ahead to replace the fan motor. (See 6.7 REPLACE THE FAN MOTOR).
PART V TROUBLESHOOTING 5.4 NO UV LIGHT When the unit is turned on, the UV light does not light up. Most of time, this problem is because of a loose UV bulb which could be due to shipping and handling. However, there are other reasons. In order to make sure what causes this problem you will have to prepare yourself for some electrical work, have the necessary tools ready and proceed with the following steps. The Troubleshooting Chart Fig. 5.4-1 Required tools.
PART V TROUBLESHOOTING 5.4.1 Check the UV lamp - Stop the operation and unplug the power cord from the electrical outlet. - Take off the front panel. - After removing the UV light blocker, visually check the UV lamp. If the UV lamps are broken or damaged, replace the lamp (See 6.2 REPLACE UV LAMP AND UV LAMP HOLDER). - If the UV lamp seems good, rotate the lamp gently to reinstall the lamp correctly at the ballast (Fig.5.4.1-1).
PART V TROUBLESHOOTING 5.5 THE BUTTONS DO NOT WORK When the unit is plugged in, there is a melody but the buttons do not work, or the unit turns on but the buttons freeze and a click sound is heard. It sounds like sparking. One or more buttons do not work properly. Most of time, this problem is due to sparking from the cell and unit power contact board. Any spark can interfere with the display circuit board wire to cause the incorrect display lights or freeze the buttons. 5.5.
PART V TROUBLESHOOTING 5.6 MELODY (CHIMES) FAILURE When the unit is plugged in, there is no melody, but the unit works properly. Most of time, this problem is due to sparks from the unit, damaged speaker, loose wires, or the blown melody chip (IC6 for PCB-A and IC4 for PCB-B, see Fig. 5.6-1). To solve this problem, you can proceed with the following steps.
PART V TROUBLESHOOTING 5.7 FILTER AND UV LAMP RESET PROBLEM When the Filter Life or UV Lamps indicator light flash they tell the time for UV activated carbon filter or UV lamps to be replaced. After replacing the filter or UV lamps, the unit cannot be reset. ** In the old model, there is no UV lamp replacing indicator lights on the display panel. In fact, this problem seldom occurs. If this problem happens, it is due to the remote control failure or some other reasons.
PART V TROUBLESHOOTING 5.7.1 FILTER and UV LAMP indicator light flashing When the activated carbon filter or UV lamp needs to be replaced, the FILTER or UV LAMP indicator light on the control panel will flash red. The unit will automatically shut off after the FILTER or UV LAMP indicator light flashes for 50 hours. If you do not reset them, the unit does not work (Fig. 5.7.1-1). - Plug in the power cord. - All the display indicator lights will flash for 2 seconds with a starting melody.
PART V TROUBLESHOOTING Reset with the reset button on the main circuit board If you cannot reset the FILTER or UV LAMP indicator light with the remote control, or have no remote control on your hand, you can reset the unit by pressing the reset button on the main circuit board. - Open the bottom plate. - Plug in the power cord, you should hear the starting melody. - Push the reset button on the main circuit board.
PART V TROUBLESHOOTING 5.8 SPARK BETWEEN HIGH VOLTAGE TERMINAL AND SCREW A spark occurs between the unit high voltage contact terminal and screw around it. Most of time, this problem is due to the moist air, no cell in the unit, or the high voltage power contact terminal is too close to the screws on the power contact board. If the high voltage is adjusted too high from the power supply the spark may occur (Fig. 5.8-1). Spark Fig.5.
PART V TROUBLESHOOTING 5.9 DISCHARGE SWITCH SPARK The discharge switch sparks to the bottom plate when the unit is on, especially when there is no cell in the unit. Most of time, this problem is because the discharge voltage wire is connected to the unit high voltage power contact terminal, sometimes causing a spark to the bottom plate, or burning of the discharge switch (Fig. 5.9-1). Spark between discharge switch and the bottom plate. The sparking causes the discharge switch burning.
PART V TROUBLESHOOTING 1 2 3 2 1 3 2 3 1 Fig. 5.9-6 Change the black discharge voltage wire from the high voltage contact terminal (1#) to the Low voltage terminal (2#) to decrease the voltage on the discharge voltage wire. It will avoid the spark from the discharge switch. After changing the wire connection, the discharge switch will discharge the collector section of the cell. 2 Low voltage wire of power supply Discharge switch voltage wire High voltage wire of power supply 3 Fig. 5.
PART V TROUBLESHOOTING 5.10 ELECTRICAL SHOCK Electrical shock occurs when touching the front panel. Most of time, this problem is due to the poor contact between the cell and the front panel ground contact plate,or unit ground terminal. In order to make sure what causes this problem, you will need to proceed with the following steps. Check the front panel ground plate - Open the unit front panel (Air intake). - Pull out the cell. - Visually check if the front panel ground plate.
PART V TROUBLESHOOTING Unit electrical ground system It is necessary to understand how the whole unit is grounded when you try to fix electrical system problems of the unit. When you open the bottom plate, you will see the unit ground terminal (1#), a ground screw (2#) under the power supply, another ground screw (3#) under the main circuit board and the main circuit board ground screw (4#) (Fig. 5.10-4). 1.
ENGLISH NOTES
PART VI HOW TO REPLACE THE PARTS CONTENTS REPLACE THE INTERLOCK SWITCH 6-1 REPLACE UV LAMP AND UV LAMP HOLDER 6-2 REPLACE THE POWER SUPPLY 6-3 REPLACE THE POWER CONTACT BOARD 6-5 REPLACE THE DISCHARGE SWITCH 6-7 REPLACE THE MAIN CIRCUIT BOARD 6-8 REPLACE THE FAN MOTOR 6-10 REPLACE THE FAN MOTOR CAPACITOR 6-12 REPLACE THE DISPLAY CIRCUIT BOARD, ODOR SENSOR, REMOTE RECEIVER 6-13 REPLACE THE POWER CORD 6-14 REPLACE THE FUSE 6-15 REPLACE THE CERAMIC INSULATORS 6-16 REPLACE THE SPEAKER
PART VI HOW TO REPLACE THE PARTS 6.1 REPLACE THE INTERLOCK SWITCHES When you need to change the interlock switches, proceed with the following steps for disassembly. Phillips Wire cutter screwdriver - Stop the operation and unplug the power plug from the electrical outlet. - Gently, lay the unit on the work table with a soft mat not to damage the outer casing. - Unscrew 2 screws on the interlock switch metal plate holder with a nut screwdriver (M3) and a Phillips screwdriver.
PART VI HOW TO REPLACE THE PARTS 6.2 REPLACE UV LAMP AND UV LAMP HOLDER (BALLAST) When you replace the UV lamp or ballast, proceed with the following steps. - Unplug the unit power cord after stopping the operation. - Take off the front panel (Air intake). - Discharge the unit high and low voltage contact terminals by creating a short circuit. If not, an electrical shock may occur (See the below picture). - Open the swing nut on the UV light blocker.
PART VI HOW TO REPLACE THE PARTS 6.3 REPLACE THE POWER SUPPLY When you need to replace the high voltage power supply, proceed with the following steps. - Stop the operation and unplug the power plug from the electrical outlet. - Open the bottom plate. - Discharge the unit high and low voltage contact terminals by creating a short circuit. If not, an electrical shock may occur (See the below picture). - Unplug power supply cord and signal wire connections.
PART VI HOW TO REPLACE THE PARTS 9. Unscrew 4 screws on the power supply circuit board. When opening the last screw, hold the circuit board to avoid dropping down. 7. Cut down the wire ties on the power supply ground wire. Be careful not to cut the wires. 8. Unscrew the screw on the unit ground terminal wire. There are flat and spring washers on it. Flat and spring washer When you replace the new power supply, simply do the reverse operation. Make sure each connection is connected correctly.
PART VI HOW TO REPLACE THE PARTS 6.4 REPLACE THE POWER COTACT BOARD If you have to replace the unit epoxy resin power contact board, you can follow the below steps. - Stop the operation and unplug the power plug from the electrical outlet. - Open the bottom plate. - Discharge the unit high and low voltage contact terminals by creating a short circuit. If not, an electrical shock may occur (See the below picture). - Unplug the high and low and voltage wire connections of the power supply.
PART VI HOW TO REPLACE THE PARTS When you change the epoxy resin power contact board, simply do the reverse operation. Make sure the board is secured outside the bottom. ENGLISH 5. Open the screws at the right side of the board with 6. Open the nut on the Phillips screwdriver. You need to hold the circuit ground terminal to board protector plate as you open the screws. remove ground wires with nut screwdriver.
PART VI HOW TO REPLACE THE PARTS 6.5 REPLACE THE DISCHARGE SWITCH When you replace the discharge switch, proceed with the following steps. - Stop the operation and unplug the power plug from the electrical outlet. - Open the bottom plate. - Discharge the unit high and low voltage contact terminals by creating a short circuit. If not, an electrical shock may occur (See the below picture). - Unplug the black voltage wire from the discharge switch. - Unplug the ground wire from the discharge switch.
PART VI HOW TO REPLACE THE PARTS 6.6 REPLACE THE MAIN CIRCUIT BOARD When you prepare to change the main circuit board, you should proceed with the following steps - Stop the operation and unplug the power plug from the electrical outlet. - Open the bottom plate. - Discharge the unit high and low voltage contact terminals by creating a short circuit. If not, an electrical shock may occur (See the below picture). - Disconnect 9 wire connections to the main circuit board.
PART VI HOW TO REPLACE THE PARTS Flat and spring washer 4 1 4 2 3 4 2. Unscrew 4 screws on the main circuit board. Note: The 4th is for the main board circuit board ground, it is different from other screws with flat and spring washer. ENGLISH When you replace a new main circuit board, simply do the reverse operation. Make sure the board ground is tightly secured.
PART VI HOW TO REPLACE THE PARTS 6.7 REPLACE THE FAN MOTOR The following steps are discussing how to replace the fan motor. However, you also use this procedure when you need to replace other parts, including motor capacitor, negative ion generator, speaker, odor sensor, remote receiver, or display circuit boards. Make sure to stop the operation and unplug the power plug from the electrical outlet before you follow the below steps. Step 1. Remove the unit upper cover and fan motor front cover.
PART VI HOW TO REPLACE THE PARTS Step 4. Remove the plastic cover 2. Open 10 screws on the plastic cover, 6 screws for plastic top cover and 4 for control panel cover. 1. After opening 3 screws from the back of the unit, you can take out the fan motor unit. Step 5. Remove the fan motor upper plate and metal mesh 1. Open 8 screws on the fan motor upper plate to separate the fan motor. 2. Remove the metal mesh beneath the fan motor upper plate. ENGLISH Step 6. Remove the motor 1.
PART VI HOW TO REPLACE THE PARTS 6.8 REPLACE THE FAN MOTOR CAPACITOR When you try to replace the motor capacitor, proceed with the following steps. - Open the fan motor front cover. - Follow step 1 procedure of REPLACE FAN MOTOR. - Unscrew the screw on the motor capacitor. - Unplug the capacitor wire connection with a needle-nose pliers. - The capacitor is rating for 6uf, 250V ac. Phillips screwdriver Needle-nose pliers Required tools 2. Unplug the capacitor wire connection with a long-nose pliers.
PART VI HOW TO REPLACE THE PARTS 6.9 REPLACE THE DISPLAY CIRCUIT BOARD, ODOR SENSOR, REMOTE RECEIVER. When you try to replace the display circuit board, odor sensor or remote receiver, you should proceed with the following steps. -Stop the operation and unplug the power plug from the electrical outlet. - Follow Step1~4 procedures of REPLACE FAN MOTOR. - Unscrew 4 screws on the fan motor top cover (Plastic control cover). - Remove odor sensor circuit board. - Remove the remote receiver.
PART VI HOW TO REPLACE THE PARTS 6.10 REPLACE THE POWER CORD When you need to change the electrical power cord, you can proceed with the following steps. - Stop the operation and unplug the power plug from the electrical outlet. - Open the bottom plate. - Unplug white Live line and black Neutral wire connections from the interlock switch wire connections. - Unscrew the screw on the ground wire connection. - Unscrew the screw on the power cord. - Remove the strain relief bushing (power cord holder).
PART VI HOW TO REPLACE THE PARTS 6.11 REPLACE THE FUSE If you need to replace the fuse, proceed with the following steps. - Stop the operation and unplug the power plug from the electrical outlet. - Open the fuse socket on the back of the unit with a flathead screwdriver. - Take out the damaged fuse and replace it with a new one. For more information, see page 5-3.
PART VI HOW TO REPLACE THE PARTS 6.12 REPLACE THE CERAMIC INSULATORS When you try to replace the ceramic insulators by yourself, proceed with the following steps. - Stop the operation and unplug the power plug from the electrical outlet. - Open the front panel and pull out the cell. - Lay the cell on the soft mat. - Remove rivets on the top or bottom plate of the cell. - Loose the screw on the side plate. - Replace the damaged square shape ceramic insulator. - Close the top or bottom plate.
PART VI HOW TO REPLACE THE PARTS Replace the power contact board 1 1 1.Remove 5 rivets on the epoxy resin power contact board with a hammer drill. 2 2 3 3 2. Replace a new power contact board. Remember the ground terminal is placed between the board and cell bottom plate. 1-High voltage terminal, 2- Low voltage terminal, 3- Ground terminal 3. Fasten 5 rivets (3.2x7) on the power contact board with rivet gun.
PART VI HOW TO REPLACE THE PARTS 6.13 REPLACE THE SPEAKER When you try to replace speaker, you can proceed with the following steps. - Stop the operation and unplug the power plug from the electrical outlet. - Remove the unit left side handle below the plastic control panel cover. - Pull out the speaker. - Remove the wire from speaker using a soldering iron. - Replace a new speaker and solder the wires to the speaker. -Install the unit handle.
RespirAide Tech Inc. 13-100 Hanlan Road Woodbridge, Ontario Canada L4L 4V8 Tel: 1-866-874-2532 Fax: 1-905-850-5553 www.respiraide.
