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PART III

IMPORTANT PARTS - DISPLAY CIRCUIT BOARD

E-30

ENGLISH

DISPLAY CIRCUIT BOARD

1. After take off the front
panel remove 4 screws on
the upper plate.

3. Lift up the plastic top cover
from the top back hooks.

4. Unplug the display circuit
board wires from display circuit
board.

5. Remove a screw on the odor
sensor circuit board.

2. Unscrew 3 screws on the
plastic top cover.

Replace display circuit board

The display circuit board is also seldom broken down. If you confirm that the display circuit board is broken, you will follow
the below steps and install it correctly through the reverse operation.
1. Stop the operation and unplug the power cord.
2. Take off the front panel from the unit.

Display circuit
board wire

Remote signal receiver circuit
board wire

Odor sensor circuit
board wire

Display circuit board

The display circuit board is one of the most important parts of the unit. It is located inside the plastic top 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. 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.

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Summary of Contents for 300T

Page 1: ...ENGLISH Ver 1 0 RespirAide Tech Inc 13 100 Hanlan Road Woodbridge Ontario Canada L4L 4V8 Tel 1 866 874 2532 Fax 1 905 850 5553 www respiraide com ERI JU07655 7001 ISO 9001 2008 TUV US P r o d u c t io n m o n it o r e d S a f e t y t e s t e d PRODUCT SERVICE 35 Phas e f f f f f WARNING Model No RespirAide 300T CONTENT PART I GENERAL DESCRIPTION ON AIR CLEANING 2 7 PART II PRODUCT INFORMATION 8 9 ...

Page 2: ...re especially concerned about the long term effects of inhaling fine particles less than 2 5 microns because they can travel deep into the lungs where they can remain embedded for years or be absorbed into the bloodstream Asbestos and various substances in environmental tobacco smoke ETS are well known examples and some are recognized carcinogens Exposure to high levels of fine particles also can ...

Page 3: ...s and drip pans clean is important for minimizing dust and particle accumulation and indoor mold growth within the system Source control also involves inspecting a building regularly inside and out for any signs of water damage which is a good indicator that moisture levels are high enough to support indoor mold growth The best way to prevent indoor mold growth is to eliminate all sources of exces...

Page 4: ...eting tactic but fail to achieve HEPA performance Electronic filtration Electrostatic Precipitators most commonly referred to as electronic air purifiers operate on electrostatic attraction to a collecting section usually called a electronic cell A typical two stage electronic cell has an ionizer section the front portion of the cell and a collector section the back portion of the cell The ionizer...

Page 5: ...al particles that are magnetically attracted to allergens and other airborne contaminates which are positively charged The newly formed larger particles are than able to fall harmlessly to the ground and out of the air we breathe The electret media filter also called as hybrid filter or synthetic filter Oxygen molecules Ozone molecules Ozone ozone generator Ozone is a molecule with three atoms of ...

Page 6: ...ay UV Visible Infrared 254nm 100nm 100nm 400nm 200nm 300nm 280nm 315nm 400nm 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 vis...

Page 7: ...ticipation in chemical reactions The most widely postulated reactions are shown as Fig 1 2 10 below Hydroxyl radicals and super oxide ions are highly reactive species that will oxidize volatile organic compounds VOCs adsorbed on the catalyst surface They will also kill and decompose adsorbed bio aerosols The process is referred to as heterogeneous photo catalysis or more specifically photo catalyt...

Page 8: ...otor top plate 211202 Fan housing 211504 Fan motor side plate 211203 Fan blade 101201 Unit Handle 211101 Unit housing 211102 Unit bottom plate 101501 Caster 101313 Main circuit board transformer 211304 Main circuit board 211105 Circuit board protector 101315 Power supply 101316 Power supply transformer 101311 Interlock switch 211506 Unit power contact plate 211905 Electronic cell Complete 211906 A...

Page 9: ...of odors Standby Power In order to operate the electrical circuits while the power plug is inserted in the wall outlet this product consumes about 4 6W of standby power For energy conservation unplug the power cord when the unit is not in use Specifications Model No Power Requirement Rated Power Fan Motor Fan Speed Noise Level Negative Ion UV Lamp Cord Length Dimensions Weight RespirAide 300T 120V...

Page 10: ... connect with the ground clip it will discharge itself to the air and electrical shock occurs Do not defeat the pre filter ground plate Pre filter Pre filter ground clip Pre filter ground clip Removing the Pre filter 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 wil...

Page 11: ...ntains very few particles Theses electrons attach to dust particles and give them a net negative charge The second stage the collector section of the cell is the collecting section composed of alternate parallel plates which are positive plates and ground plates When the positively charged particles are passing through the collecting section they will be trapped by the ground plates Particulates T...

Page 12: ... latch 211514 Ionizing wire hook Part Number Description Qty Interchangeable 1 2 1 2 2 211515 2nd stage ground plate 35 211516 2nd stage low voltage plate 36 211517 Ionizing wire 12 211518 Aluminum tube rob A Aluminum tube rob B 5 5 211519 211520 211521 211522 211523 211802 101801 101802 Aluminum tube 4 5mm Cell power contact HV Cell power contact LV Cell power contact G Cell epoxy resin board Rou...

Page 13: ...ll Part model Dimmensions Weight Collecting surface area Particl removal efficiency Power consumption 200 5p 39 4cmx42cmx11cm 3 8kg 1 95m2 95 98 0 3microns 0 5microns 4 77W 7 8KV dc The square ceramic insulator was burnt and cracked down because of a long time use of the wet cell Discoloration of the cell Occasionally after the cleaning process the cell may seem stained If the stain is black or ve...

Page 14: ...t utilizes a carbon powder impregnated pad not granular form Room conditions such as air temperature and humidity also effect the capacity of adsorbents to remove odors The activated carbon filter should be replaced when it is no longer effective in eliminating odors Replacing the activated carbon filter When the CARBON FILTER FILTER LIFE indicator light on the control panel flashes you need to re...

Page 15: ...When the UV LAMP indicator light on the control panel flashes you need to replace it After replacing the UV lamp you have to reset the unit The photo catalyst will not be replaced However remove any dust by a vacuum cleaner 1 Remote control Press the RESET2 5 times or press the RESET button 3 times when there is only one RESET button on the remote control 2 Hold 5 seconds the reset button on the b...

Page 16: ...the left fan housing When negative ion generation is stopped the indicator light will go out Negative ion generator output brush terminal Negative ion generator wire plug under the fan motor top plate Negative ion generator is secured to the left fan motor housing metal plate Control of negative ion discharge When the Neg Ion indicator light is on negative ions are discharged The negative ion gene...

Page 17: ...k switch and do the reverse operation to replace a new one Make sure all the black Live line and white Neutral wire are connected correctly before starting the unit Interlock switch Interlock switch adjustor The interlock switch is provided with a lever which can be actuated by the actuator on the front panel The interlock switch opens all supply conductors simultaneously when opening the front pa...

Page 18: ...in circuit board transformer wire connection 6 UV lamp power cord connection 1 Red twin wire 12V ac from the transformer to circuit board 2 Blue twin wire 110V ac from circuit board to transformer 8 Unit power cord wire connection from interlock switch 7 Power supply transformer wire connection 2 1 Main circuit board and wire connections The main circuit board is the most important parts of the un...

Page 19: ... board and wire connections 1 Unplug the red check wire connection 2 Unplug the odor sensor wire connection 7 Unplug the power supply power cord connection 8 Unplug interlock switch wire connection 9 Remove transformer wire connection 5 Unplug fan motor wire connection 6 Unplug UV lamp power cord connection 3 Remove the negative ion generator wire connection 4 Unplug the display circuit board wire...

Page 20: ... wir plug from the circuit board 2 Remove 2 screws on the main circuit board transformer 2 Remove the main circuit board The ground portion of main circuit board Replace the main circuit board transformer Helpful hints The transformer is rarely broken down When you check the transformer just check the red wire connection voltage and blue wire connection voltage 2 If the reading is close to 110V th...

Page 21: ... High voltage output adjustor Check and working lamp 2 Red twin check wire connection The power supply is one of the most important parts of the unit The power supply provides high voltages to the cell through the power contact plates The red wire twin check wire connect the main circuit board The main circuit board always investigate the voltage on the check wire if the voltage is less than 1V dc...

Page 22: ...the green and red lights do not illuminate the CHECK indicator light also flashes You need to check the power supply power supply transformer and main circuit board 5 If the green light blinks between 15 seconds and the CHECK indicator light on the control panel flashes the power supply red check wires or the connections have problem 1 The green working light illuminate The unit is working correct...

Page 23: ... the power supply will reduce ozone production but will also reduce air cleaning efficiency Adjust the high voltage output by rotating the adjustor with plastic screwdriver Counter clockwise to decrease high voltage Clockwise to increase high 1 Open the bottom plate 2 Rotate the bolt on the blue color adjustor with flat screwdriver To avoid electrical shock you can unplug the power cord 3 To decre...

Page 24: ...w power supply and 4 screws 4 Screw the power supply ground wire connection Finally tight up all the screws on the circuit board 5 Plug the red twin check wire on the power supply circuit board 6 Plug the transformer connection correctly 7 Connect the red high voltage and black low voltage wire connections 2 Put a screw on the circuit 3 Put the red check wire under the circuit board before setting...

Page 25: ...er provides power to the power supply If the transformer has problem it cannot provide power to the power supply so the red check and green working light will not illuminate and the CHECK indicator light on the control panel will flash In other words if the power supply check light flashes the transformer is OK Adjust the high voltage output by rotating the adjustor with plastic screwdriver The tr...

Page 26: ...h slotted screwdriver 4 Remove two screws on the green socket with slotted screwdriver 3 Remove power supply power socket from the power supply 1 Remove the power supply transformer green socket from main circuit board 5 Remove two screws on the green socket with slotted Replace the power supply transformer When you disassemble the power supply you will follow the below steps and simply do the rev...

Page 27: ...ubber wire protection See next page 9 Unplug the negative ion generator wire plug 10 Remove a screw from the fan motor ground wire connection 5 Unplug the display circuit board wire from the display circuit board 6 Remove a screw on the odor sensor circuit board Serrated washer Ground wire terminal Flat washer After removing the plastic top cover you will find the fan motor system The fan motor sy...

Page 28: ...pen a nut on the motor shaft with a nut screwdriver counter clock wise with the right side nut 2 Open 2 screws on the motor wires 3 Open another nut on the motor shaft with a socket wrench clock wise with the left side nut 4 Open screws on the fan motor side plate with Phillips and nut screwdriver When you replace the fan motor simply do the reverse operation Make sure all the washers are installe...

Page 29: ... you ever need to replace the capacitor always make sure you replace it with the same micro farad uF rating 6 uf 250V When disassembling the motor capacitor you will follow the below steps and do the reverse operation to install it Fan motor cable connection on main circuit board The motor has 7 electrical wires two white color wires are for capacitor one green yellow color for ground and the rest...

Page 30: ...he reverse operation 1 Stop the operation and unplug the power cord 2 Take off the front panel from the unit Display circuit board wire Remote signal receiver circuit board wire Odor sensor circuit board wire Display circuit board The display circuit board is one of the most important parts of the unit It is located inside the plastic top cover The circuit board is connected to the main circuit bo...

Page 31: ... to insert 3 plastic hooks on the top cover into the top of the unit until the top cover is correctly inserted 2 Lift out the front panel to take off the front panel 3 When installing the front panel you will need to insert the upper portion of the front panel and then the bottom of it 10 Lift out the display circuit board from the plastic top cover Negative ground wire Add a spring washer 8 Unscr...

Page 32: ...y or repair the problem cell Check power supply Check electronic cell Check power supply transformer Check main circuit board If the power supply is broken replace it If the power supply transformer is broken replace it If the main circuit board is broken replace it and send back to the manufacturer Some of these steps expose dangerous high voltage Only qualified service technician should attempt ...

Page 33: ...less than 1V DC leading to the CHECK indicator light flashing If the square ceramic insulator of the cell was burnt and cracked down because of a long time use of the wet cell also causing the CHECK light to flash Helpful hints A simple way to check the cell 1 Open the front panel lift out the cell and put it again 2 Try to change another cell check if the CHECK light still flashes If yes the cell...

Page 34: ... the transformer power cord has problem You need to replace the transformer Check main circuit board When you cannot check out the voltage on the power supply transformer connection of the main circuit board see above picture and the CHECK indicator light on the control panel flashes you need to replace the main circuit board 1 Set the ohmmeter at 200V ac 2 Check power voltage on the power supply ...

Page 35: ... Interlock switch is OK Properly install the front panel Replace the damaged fuse Replace the broken main circuit board transformer Replace the damaged main circuit board TROUBLESHOOTING CHART Repair tips 1 Check power cord plug and outlet 2 Check front panel 3 Check interlock switch 4 Check fuse 5 Check main circuit board transformer 6 Check main circuit board Step 1 Step 2 Step 3 Check fuse Step...

Page 36: ... is tightly inserted into the outlet 2 Make sure the power plug is tightly inserted into the unit power socket 3 Properly install the front panel 4 Adjusting the interlock switch adjustor with a screwdriver 5 Cut down some of the plastic lever on the interlock switch Check front panel If the power cord is OK go to check the front panel There is an actuator at the right bottom inside the front pane...

Page 37: ...driver open the fuse holder cover and remove the fuse Taking out the fuse visually check if it is damaged If it is damaged replace it with 125Vac 2A new fuse A spare fuse can be found in the operation manual plastic bag Check the fuse Now that the interlock switch is no problem you should go ahead to check the fuse The fuse holder is located on the power cord socket of the back of the unit With a ...

Page 38: ...nsformer has problem You have to replace the main circuit board transformer If the fuse is OK please go ahead to check other parts see below picture 4 Check the power supply transformer Plug in the power supply transformer connection to the main circuit board and try to operate the unit If the fuse is blown the power supply transformer has problem Please replace the power supply transformer If the...

Page 39: ...from the main circuit board 3 Unscrew 2 screws from the transformer When installing the transformer you will do simply the reverse operation 1 Unplug the transformer wire connection from the main circuit board 2 Remove 2 screws from the transformer If the ohmmeter reads close to 110V ac the transformer is OK Set the ohmmeter at the range of 200V ac If it reads close to 12V ac the transformer is OK...

Page 40: ...it board motor capacitor and fan motor Check the main circuit board or replace the fan motor OK OK ENGLISH Repair tips 1 Check fan motor wire connection 2 Check fan motor capacitor 3 Check main circuit board 4 Check fan motor TROUBLESHOOTING CHART Some of these steps expose dangerous high voltage Only qualified service technician should attempt this procedure WARNING No fan with incorrect display ...

Page 41: ... see IMPORTANT PART DISPLAY CIRCUIT BOARD on page 30 No fan with correct display lights The unit has correct display lights on the control panel but the fan does not work and the SPEED button also does not work correctly Most of time it is because of loose of the fan motor cable connection and the main circuit board problem Check if the fan motor cable connection is loosened 1 Put the unit on the ...

Page 42: ...onnection is correct you can unplug the connection and check the voltage output on the pins If the voltages are not 120V ac you will have to replace then main circuit board C At High speed check the voltage between pin 1 and pin 7 B At Medium speed check the voltage between pin 3 and pin 7 A At Low speed check the voltage between pin 5 and pin 7 1 Remove the fan motor panel after taking off the up...

Page 43: ...uit board fan motor and the power source Check the main circuit board 1 Open the bottom plate 2 Set the ohmmeter at the range of 200V ac Check the Low Medium and High speed output voltage on the main circuit board They should read close to 120V ac If not you will need to replace the main circuit board Make sure the fan motor speed must be set at the checking speed when you check the fan motor conn...

Page 44: ...nnections are correctly connected you need to replace the fan motor Check the power source Sometimes the problem is because of the incorrect power source You can check it with ohmmeter it should be close to 120V ac If not do not operate the unit To replace the fan motor see IMPORTANT PART MAIN FAN MOTOR SYSTEM on page 27 ...

Page 45: ...main circuit board 1 When the CARBON FILTER indicator light flashes you need to change the activated carbon filter and press the RESET 1 button on the remote control 5 times to reset 2 When the UV LAMP indicator light flashes you need to change the UV lamp and press the RESET 2 button on the remote control 5 times to reset You can see a light under the cell phone camera mode if the remote control ...

Page 46: ... change the UV lamp and press the RESET button on the remote control 3 times to reset 3 From the C serial number units R300xxxC has CLEAN CELL indicator light when CLEAN CELL indicator light flashes you will need to clean the cell and press the RESET button 3 times to reset it From the D serial number units we use this remote control you can press 3 times to reset CARBON FILTER UV LAMP or CLEAN CE...

Page 47: ... CARBON FILTER and hold 3 5 seconds to reset UV LAMP or CLEAN CELL indicator light If the remote control reset button or POWER button does not work to reset CARBON FILTER UV LAMP or CLEAN CELL indicator light you will go to press or hold the reset button on the main circuit board If it still does not work check the remote signal receiver circuit board display circuit board wire or the main circuit...

Page 48: ...ist atmosphere To fix this problem you can paste plastic tape beneath the high voltage contact plate or bond it with hot melt adhesive with hot glue gun Sparking occurs between cell high voltage contact plate and unit contact plate Sparking occurs between unit power contact board screw and the power contact plate Paste insulation or clear tape beneath the high voltage contact power contact plate o...

Page 49: ...last is broken replace it If the UV lamp cord or ballast is broken replace it Step 1 Step 2 Step 3 OK OK ENGLISH TROUBLESHOOTING CHART Repair tips 1 Check UV lamp 2 Check UV lamp power cord and ballast 3 Check main circuit board Some of these steps expose dangerous high voltage Only qualified service technician should attempt this procedure WARNING When the unit is turned on the UV light does not ...

Page 50: ...lamp socket power If you are sure the UV lamp is placed correctly at the ballast or the UV lamp is OK you need to go ahead to check the UV lamp power cord Set the ohmmeter in the range of 200V ac and check the UV lamp socket power If it reads about the 120V ac the ballast is broken you need to change the UV lamp ballast 1 Unscrew the swing nut on the UV light blocker 2 Remove the UV light blocker ...

Page 51: ... circuit board it should read somewhere close to 120V ac A If the voltage is OK you will need to change the UV lamp power cord White colour B If the voltage is incorrect at the main circuit board connection you will have to replace the main circuit board Make sure the UV lamp cord connection is connected tightly before checking the output voltage Note See how to replace the main circuit board Repl...

Page 52: ...t you have to adjust contact plate or change the power contact board Adjust cell ground contact plate so that it can contact the cell closely 1 Check Pre filter and cell ground clips A Stop the unit and unplug the power cord B Open the front panel and pull out the Pre filter and cell C Visually check if the Pre filter ground and cell clips are pressed down Repair tips 1 Check Pre filter and cell g...

Page 53: ...unit 1 Press the button one time to reset FILTER LIFE 2 Hold the button 5 seconds to reset the UV LAMP 1 Cancelled the reset button on the back of the unit 2 Added a function of the POWER button as a reset button Holding the POWER button 3 seconds will reset CARBON FILTER UV LAMP or CLEAN CELL indicator light A B R3000681C R3001020C C POWER RESET SPEED UV LAMP AUTO NIGHT NEG ION TIMER One reset bu...

Page 54: ...RespirAide Tech Inc 13 100 Hanlan Road Woodbridge Ontario Canada L4L 4V8 Tel 1 866 874 2532 Fax 1 905 850 5553 www respiraide com ...

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