the User Manual for this product
Contents
1. 22 Possible faults Type of fault Cause Corrective action Control panel completely off the oven does not work Incorrect electric connections to the mains Check the mains connection No mains voltage Restore mains voltage Thermal break safety device tripped Reset the thermal break safety device Electronic card protection fuse control panel burnt Contact a qualified technician Cooking cycle set and push button pressed the oven does not work Door open or ajar Close the door Damaged door switch device Contact a qualified technician to repair the sensor Humidity production in cooking chamber on No water flows from the pipes Incorrect connection to water mains Connection of non conforming pump Check the connection to water mains electrovalve or the connection of pump Cut off cock closed electrovalve Tank without water pump Check the cut off cock Check water level into the tank Blocked water inlet filter Clean the filter Electrovalve or pump water entrance damaged Contact a qualified technician to repair the solenoid Door closed water vapour comes out of the seal Seal not fitted correctly Check the seal fitting Damaged seal Contact a qualified technician to repair the seal Handle mechanism loosened lateral opening door Contact a qualified technician to repair the prong The oven does not cook2. EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D 10 Operation mode The cooking cycle can be run in manual or programmed mode which can be divided in 4 steps TIME TEMPERATURE HUMIDITY cooking parameters can be set for each step MANUAL MODE To select cooking parameters TIME TEMPERATURE HUMIDITY press the button sare the led for the selected parameter turns on each time the button is pressed At least cooking time and temperature parameters must be set for the cooking cycle to start e To select cooking cycle steps 1 2 3 4 press the button d the led relevant to the selected step turns on each time the button is pressed The led relevant to the current step blinks during the cooking cycle e To set or change the selected parameter press buttons Bea Press button B to increase the parameter Press button to decrease the parameter e The time parameter symbol B can be set from 0 hours and 01 minutes to 9 hours and 59 minutes If INF or HLD appear on the display this means that the timer is excluded The oven operates continuously until manually turned off with the a button When INF appears on the display only displayed for step 1 steps 2 3 4 are disabled leds off When HLD appears on the display only displayed for step 4 this means that the cooking cycle after terminating the previous steps continues without the timer and with the parameters set for phase 4 Th
3. 3 D EKF 464 3 D TECNOEKA Srl declares that the mentioned above products meet the following safety regulations Low voltage directive 2006 95 CE Electromagnetic compatibility Directive 2004 108 CE TECNOEKA Srl declares that the mentioned above products meet the following harmonised standards CEI EN 60335 1 CEI EN 60335 2 42 CEI EN 55014 1 CEI EN 61000 3 2 CEI EN 61000 3 3 CEI EN 62233 TECNOEKA Srl declares that the mentioned above products meet the following directives Machine Directive 2006 42 CE Directive on the general safety of products 2001 95 CE Directive on the restriction in the use of dangerous substances in electrical and electronic appliances 2002 95 CE RoHS Directive on waste from electrical and electronic appliances 2002 96 CE RAEE TECNOEKA Srl declares that the mentioned above products meet the CE 1907 2006 REACH Regulation f 7 f KAN tS Jhe 21e EFE Borgoricco 10 10 2014 Signature of a Representative of the Board of directors CRISTINA LORA page 3 _ TECNOEKA Srl Index Technical service use and instruction manual _ General warnings Technical specifications Instructions for the installer Use instructions for the user Residual risks for the user How to use the control panel Ignition olo N ja ula jw v Switch off Oo Operation mode Coo
4. Informations to the consumers Further to Directive 2002 96 EC the symbol of the crossed rubbish skip on the appliance means that at the end of its life the product must be disposed of separately from the other rubbish The user must hand the appliance to a specialised waste collection centre for electric and electronic equipment The separate collection of the rubbish and subsequent treatment recovery and disposal help to produce other equipment using recycled materials reducing the negative effects on the environment and public health which would be caused by incorrect management of the rubbish Should the user dispose of the product abusively administrative sanctions would be applied pursuant _ page 14 Electric Ovens rev 1 EKF 464 3 D _ EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D 25 Wiring layouts MODD EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D T1 SD MI Power terminal board Safety thermostat Electronic card Humidifier solenoid valve Door microswitch Fuse B1 B2 R1 R2 V1 V2 V3 L1 L2 Contactor coil Circular heating elements Radial motoventilators Tangential motorised ventilator Oven lighting lamps page 15 TECNOEKA Srl use and instruction manual _ 26 The Warranty Your appliance is covered by warranty The seller will replace or repair and his decision will be final free of charge for the customer only those parts t
5. a delayed start for the cooking cycle can be reset by proceeding as above N B in case of BLACKOUT or power failure during the COUNTDOWN the programmed delay for the cooking cycle is cancelled and all the relative set parameters are zeroed A delayed start to the cooking cycle is only possible in MANUAL MODE It cannot be included in a programmed cooking cycle 14 Programmed mode Up to 99 cooking programs cycles can be saved Each program can include 1 or more cooking steps up to 4 _ page 10 _ Electric Ovens _ rev 1 EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D 15 Saving cooking programs Follow the steps below to save a cooking program press the button led on PO1 appears on the display Press buttons Be and select the required program number up to P99 Set the relevant cooking cycle parameters following the same procedure used for manual mode Press and hold down the BR button for at least 5 seconds the program is successfully saved with the saved program number blinks on the display To cancel a saved program simply replace it with a new program with the same number where new parameters are set for the new cooking cycle The new program must be saved by pressing the button 16 Cooking with a saved program Follow the steps below to run a saved cooking program press the button PO1 appears on the display Press buttons mu and select the r
6. especially acid foods such as salt vinegar lemon etc to stagnate on the stainless steel parts because they could deteriorate Do not wash the appliance with direct jets of water because if water enters this could limit the appliance s safety Do not use corrosive substances e g hydrochloric acid to clean the oven s support bench Cleaning the oven It is good practice to clean the oven interior at the end of every day of duty In this way it will be easier to remove cooking residues preventing them from burning when the oven is next used Clean it accurately with hot water and soap or with the appropriate off the shelf products Cleaning the oven door To clean the oven door thoroughly proceed as follows fully open the door insert the equipped plugs in the A holes on the hinges Fig 1 lift the door gently and withdraw it Fig 2 Fig 1 Fig 2 Replacing oven lamp Electrically switch off the appliance unscrew the protective glass cap with the corresponding rings for airproofing Fig 3 unscrew the lamp and replace it with another lamp suitable for high temperatures 300 C with the following characteristics Voltage 230 240 V Power 15W Fitting E14 Refit the glass cap with the corresponding rings for airproofing and power up the appliance page 12 Electric Ovens rev 1 EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF464 3D
7. evenly One of the motors is blocked or turns slowly If the oven has two motors Contact a qualified technician to repair the motor The motors do not go into reverse Contact a qualified technician to repair the motor Heating element not powered or is damaged Contact a qualified technician to repair the element Lighting lamp in the cooking chamber does not work Damaged lamp Change the lamp Light bulb unscrewed Make sure the light bulb is fully screwed in ER1 appears on the display Breaking in the connection between the cooking chamber probe electronic card and the control panel Check the connection to the control panel Damaged cooking chamber probe Contact a qualified technician to repair the probe page 13 TECNOEKA Srl use and instruction manual _ 23 Technical assistance Before leaving the factory the appliance was completely regulated and tested by expert specialised personnel to guarantee the best operating results All repairs and settings must be performed with utmost care and attention respecting national safety regulations in force Always contact your retailer or our nearest Service Centre giving details of the problem the appliance model and the serial number on the rating plate on the rear panel For any maintenance the user can contact Tecnoeka by calling the telephone numbers on the cover or going to www tecnoeka com 24
8. it was expressly designed i e cooking foods in the oven Any other use is considered unsuitable The appliance can be used for all oven cooking of deserts pizzas meat fish vegetables as well as for re conditioning cooled and frozen foods When placing food in the cooking compartment leave a space of at least 40 mm between pans in order not to over obstruct air circulation Do not use pans with higher than necessary edges edges are barriers which prevent the circulation of hot air for cooking of bread and pastry do not use pans with borders higher than 20mm avoid that products into the pan get in contact Warm up the oven before every cooking operation set a temperature 30 C higher than cooking temperature to obtain maximum uniformity Do not salt foods in the cooking compartment 6 Residual risks for the user After a cooking operation open the door cautiously to avoid a violent outflow of heat which could cause burns While the oven is in operation pay attention to the possible hot zones marked on the appliance of its external surfaces Place the machine on a bench or similar support at a height of at least 85 cm from the floor The bench or support must be able to support the weight of the machine and house it correctly The appliance contains electrical parts and must never be washed with a jet of water or steam The appliance is electrically connected before attempting any cleaning operation cut power to the app
9. marked L1 and L2 connecting the neutral conductor to the terminal marked N and the earth conductor to the terminal marked with the symbol according to the following lay out _ page 6 _ Electric Ovens _ rev 1 EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D _ 220 230v 380 400v 2N ETT ERE this electrical connection lay out is located near the power supply terminal board Tighten the cable gripper and re fit the rear side panel of the appliance Any appliance must be connected to an equipotential system whose efficiency must first be checked according to current legal regulations This connection must be made between different appliances by using the appropriate terminal marked with the symbol Xv The equipotential conductor must have a minimum diameter of 2 5mm The equipotential terminal is at the rear of the appliance Safety thermal breaker The appliance is supplied with a manually resetting thermal breaker to protect against excessive dangerous temperatures which could be accidentally generated inside If it is tripped the device cuts off the power supply to the appliance 5 Use instructions for the user For first use we advise you to let the appliance to run load free for 30 40 minutes at a temperature of 200 C In this way any unpleasant smells due to thermal insulation and residual work grease are eliminated This appliance must be used solely for the purpose for which
10. d by the switch the power supply when the appliance is operating must not deviate from the rated voltage value by 10 make sure that after inserting the power supply cord into the terminal block it does not come into contact with any of the cooking range s hot parts if the supply cable is damaged then it must be replaced by the manufacturer or by your technical support or by a qualified person to avoid any risk Connection to the water mains The appliance must be fed with softened drinking water with pressure in the range from 100 to 200 kPa 1 0 2 0 bar Water must have hardness from 0 5 F to 3 F it is suggstible to use a softener as to avoid the malfunction of the fan the breakage of the heating element and to reduce the formation of lime inside the cooking chamber Connection to the water mains should be made through the threaded 3 4 solenoid valve on the rear on the bottom of the appliance fitting in between a mechanical filter and an on off tap before you connect the filter allow a certain quantity of water to flow out in order to drain any waste from the pipe Connecting the power cable To access the terminal board just remove the appliance s rear side panel Loosen the cable gripper and allow the cable to pass through it Arrange the conductors so that the earth conductor is the last to detach from its terminal if the cable goes into a state of faulty traction Connect the phase conductors to the terminals
11. e cooking cycle is switched off by pressing the e button This operation lets the user keep food warm at the end of the cooking cycle for the desired amount of time The temperature parameter symbol W can be set from 50 C to 270 C The humidity parameter P d can not be set automatically it is settable only manually by pressing the button 11 Cooking cycle ON OFF The cooking cycle starts and stops by pressing the E3 button The resistance motor and water solenoid valve are switched off at the end of the cooking cycle The buzzer sounds for 30 seconds and 0 00 blinks on the display Temperature humidity parameter settings for the last Cycle step remain set If an extra time is set during the next 30 seconds the oven automatically restarts and cooking continues with the temperature and humidity parameters for the last step used When extra time has elapsed the cooking cycle ends If the 30 seconds elapse or the cooking cycle is interrupted by pressing the amp button all set parameters are reset and the oven readies for new cooking cycle settings page 9 _ TECNOEKA Srl use and instruction manual _ 12 Displaying changing parameters with the cooking cycle ON When the cooking cycle is on parameters can be M i by pressing the d button and values can be changed keys Bu in each step button in the cooking cycle Several seconds after the last change for any of the four steps operating st
12. e the following on the delivery note REVERSE THE RIGHT TO CONTROL THE GOODS specify the damage and get the driver to sign in acceptance send a claim in writing to the seller within 4 calendar days from the date of receipt No claim shall be accepted after such period The warehouse inside temperature must not be lower than 9 C otherwise the thermostat regulation and safety thermostat control devices of the machine will be damaged Failure to observe this prohibition invalidates any responsibility of the manufacturer of the machine The appliance is intended for professional use and must be utilised by qualified personnel trained to use it Any modification which may be necessary on the electrical system to enable installation of the appliance must be carried out solely by competent personnel tis dangerous to modify or attempt to modify the characteristics of this appliance Never clean the appliance with direct water jets because if any water enters it could limit the machine s safety Before doing any maintenance or cleaning jobs disconnect the appliance from the electrical mains and allow it to cool When the tilting door is wide open do not put anything on the surface because the door hinges could be irreparably damaged Do not attempt to carry out the periodic controls or any repairs by yourself Contact the nearest Service Centre and use only original spare parts N B Improper or incorrect use and
13. eKa ae oo mam SSE LSS PENE AYA AA USE AND INSTRUCTION MANUAL MODD EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D rev 1 TECNOEKA S r l Via Marco Polo n 11 35010 Borgoricco Padova Italy Tel 39 049 9300344 39 049 5791479 Fax 39 049 5794387 E mail info tecnoeka com www tecnoeka com TECNOEKA Srl use and instruction manual _ X Sgq PRODOTTI Fam 1 FORNNFORNO ELETTRICO LEka MANUALI D USO Forno Elettrico 40 60 90 LEka Lingua Inglese NUOVA GAMMA Ef Instruction manual EKF 411 D EKF 464 D HT EKF 411 3 D EKF 464 3 D GB rev 1 doc _ page 2 _ Electric Ovens _ rev 1 EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D Prodotti mirati per Ristorazioni Pasticcerie Panetterie e Gastronomie TECNOEKA Srl Via Marco Polo 11 35010 Borgoricco PD Tel 39 049 5791479 39 049 9300344 eKa Fax 39 049 5794387 www tecnoeka com info tecnoeka com CE DECLARATION OF CONFORMITY Annexed document Il A of directive 2006 42 EC Manufacturer s name TECNOEKA Srl Manufacturer s address Via Marco Polo 11 35010 Borgoricco PD Manager s name of technical file Minotto Lorenzo Manager s address of technical file Via Marco Polo 11 35010 Borgoricco PD Type of product Electronic oven Purpose of the product Cooking food Model EKF 411 D EKF 464 D EKF 464 D HT EKF 411
14. ents and or maintenance and or repairs carried out by unauthorised personnel and or with non original spare parts 8 inadequate or careless maintenance of the product in contrast with the user s handbook supplied with the product 9 damages caused by fire natural disasters and accident as well as by any cause not attributable to TECNOEKA SRL The warranty explicitly excludes varnished or enamelled parts knobs handles movable or removable plastic parts bulbs glass parts refractories and any accessories TECNOEKA SRL cannot be held responsible for any damages either direct or indirect caused by the product breaking down or following its non use Any repairs carried out during the warranty do not cause said warranty to be extended or renewed Nobody is authorised to modify the terms and conditions of the warranty or to issue new verbal or written warranties The warranty is valid only for appliances installed in the European Union Any dispute shall be settled by the competent Court in Padua Warning for the Buyer 1 the cooking appliance is designed only for cooking purposes while the heating appliance is designed only for heating domestic environments 2 TECNOEKA S r l does not install the appliances the seller shall be responsible for any installation carried out 3 TECNOEKA S r l cannot be held responsible for any damages either direct or indirect to people pets or property caused by the appliance breaking down or fo
15. ep parameters are displayed led blinks on current step If the VA Time parameter is selected The value set for the selected step led on symbol B is displayed for 4 seconds alternated by the remaining total COUNT DOWN for the rest of the other steps for 4 seconds led blinks on symbol Temperature parameter The value set for the selected step led on symbol E is displayed for 4 seconds alternated by the value read in the cooking chamber for 4 seconds led blinks on symbol 0 13 Delayed start to the cooking cycle To delay the start for the cooking cycle proceed as follows e Set the required parameters for each phase in the cooking cycle following the instructions in the paragraph OPERATING METHOD paragraph 10 e Press the key until all the signal leds go out on the control panel The message 0 00 appears on the display e Press the a amp keys and set the required DELAY TIME on the display maximum 9 hours and 59 minutes e Press the key to activate the delayed start The led on the E starts flashing to show that the COUNTDOWN has started shown on the display The DELAY TIME can be changed at any moment during the COUNTDOWN by pressing the E E When the DELAY TIME is up the cooking cycle will start automatically To zero the DELAY TIME just press the cm the display will show the operating parameters than can be changed Press the gain to continue the cooking cycle otherwise
16. equired program number Press button P H appears on the display cooking chamber preheating function The oven operates until it reaches a temperature equal to the value set for step 1 programmed cycle increased by 30 C When the preheating temperature is reached P H blinks on the display and the buzzer sounds At this point open the oven door introduce food to be cooked and close the door the buzzer turns off and the programmed cooking cycle starts N B the preheating function is available automatically started only in programmed cooking modes When the oven is operating in programmed mode set parameters can be displayed in the same way as with manual mode For the user s convenience set parameters can be changed during oven operations in programmed mode At the end of the programmed cooking cycle changed parameters are automatically RESET and return to the values initially saved in the program 17 Manual humidifying During a cooking cycle both manual and programmed humidity can be produced at any time solenoid valve on in the cooking chamber with pressing of button led on Humidity production goes on as long as button is kept pressed 18 Door device The device stops oven operations stops the cooking cycle whenever the door is opened The cooking cycle resumes where it left off when the door is closed 19 Black out When power returns after a black out the oven automatically r
17. esumes operations and the cooking cycle resumes from where it left off page 11 TECNOEKA Srl use and instruction manual _ 20 Oven cooking Convection cooking Heat is transferred to the foods by pre heated air forced to circulate by in the cooking chamber The heat quickly and uniformly reaches all parts of the chamber enabling simultaneous cooking of different types of food providing they have the same cooking temperature placed on the shelves without mixing tastes and smells Convection cooking is particularly convenient for rapid de freezing and for sterilising preserves and drying mushrooms and fruit Convection humidification Cooking Humidity can be added to hot air in order to create a hot moist climate in the cooking chamber This climate makes the surface of the food soft and avoid crust formation 21 Routine cleaning and maintenance WARNING Cut power to the appliance before every operation General cleaning Clean the oven when it is cold Wash enamelled parts with lukewarm water and soap do not use abrasive products steel wool or acids which could ruin them To clean the steel parts do not use products containing chlorine sodium hypochlorite hydrochloric acid etc even if diluted Use specific off the shelf products or a little hot vinegar Rinse thoroughly with water and dry with a soft cloth Clean the glass door of the oven with hot water only and do not use rough cloths Do not allow foods
18. failure to observe the installation instructions shall release the manufacture from all responsibility In this connection the directives in the POSITIONING paragraph must be strictly observed 3 Technical specifications EKF 411 D EKF 464 D EKF 411 3 D EKF 464 3 D EKF 464 D HT Dimensions of appliance LxDxH mm 790x750x635 Weight Kg 50 6 Convection heating element kW 1 6 Max absorbed power kW 34 Power supply voltage V 230V 50 60Hz 400V 50 60Hz Power cable diameter 3x1 5 mm 4x2 5 mm Type of cable HO7RN F Connecting electric cable Tiype Y Class Degree of protection against humidit IPX3 Water pressure kPa 100 200 The noise level of the appliance in operation is below 70 dB A page 5 _ TECNOEKA Srl use and instruction manual _ The technical data plate is positioned on the rear panel of the appliance 4 Instructions for the installer The following instructions are aimed at the qualified installer to ensure that he carries out the installation adjustment and maintenance operations as correctly as possible and according to current legal regulations Any operation must be performed with electrical power cut to the appliance Before using the appliance carefully remove the special adhesive film protecting the parts in stainless steel Do not leave any glue residues on the surfaces If necessary remove them at once with an appropriate solvent Fitting the feet The feet are inside
19. hat are defective due to a manufacturing fault on condition that under penalty of forfeiture for domestic equipment the customer notifies the fault within two months from the date when he she discovered it and anyway within 2 years form the date of purchase for professional equipment the customer notifies the fault within 8 days from the date when he she discovered it and anyway within 12 months from the date of purchase by registered letter with acknowledgement of receipt and enclosing the invoice or receipt proving the purchase Apart from the case when the customer cannot produce the invoice or receipt proving the purchase or when the above mentioned terms are not complied with the warranty is expressly excluded in the following cases 1 faults or breakage caused by the transport 2 wrong or incorrect installation of the product for instance because of insufficient draught of the flue or exhausts in light of the instructions given in the user s handbook supplied with the product 3 inadequate or abnormal electrical hydraulic and or gas supplies 4 carelessness negligence or incompetence in using the product in light of the instructions given in the user s handbook supplied with the product 5 use of the product for uses different from the one for which it was built or anyway in a manner not compliant with the instructions given in the user s handbook supplied with the product 6 tampering with the product 7 adjustm
20. king cycle ON OFF N Displaying changing parameters with the cooking cycle ON UJ Delayed start to the cooking cycle D Programmed mode ul Saving cooking programs o Cooking with a saved program N Manual humidifying co Door device KO Black out N O Oven cooking N Routine cleaning and maintenance N N Possible faults N UJ Technical assistance N IN Informations to the consumers N ul Wiring layouts N Cc _ The Warranty _ page 4 _ Electric Ovens _ rev 1 EKF 411 D EKF 464 D EKF 464 D HT EKF 411 3 D EKF 464 3 D _ 1 Technical service A technical check up once or twice a year helps prolong the life of the appliance and guarantees better operation Make sure that assistance is carried out solely and exclusively by qualified personnel For any spare parts orders or for any information about the appliance always mention the serial number and model data indicated on the technical data plate at the rear of the oven 2 General warnings Very important keep this instruction book together with the appliance for future consultation These warnings were drafted for your safety and for that of others Please read them carefully before installing or using the appliance f on receipt of the goods the packaging is damaged writ
21. liance Do not use the door handle to move the appliance the glass panel may break When the tilting door is wide open there is the risk that things could be placed on the surface with the risk of irreparably damaging the door hinges page 7 TECNOEKA Srl use and instruction manual _ 7 How to use the control panel Control Panel symbol legend 13 2d 5 57 8 5 1o 1 Parameter on signal LED 6 Parameter value decrease button 2 Cooking parameter selection button 7 Parameter value increase button 3 Step on signal LED 8 Cooking program select save button 4 Cooking step selection button 9 Manual humidifying button 5 Parameter display 10 START STOP button 8 Ignition The control panel digital automatically turns on as soon as the oven is electrically powered 0 00 appears on the display to indicate time expressed in hours and minutes and the time led turns on in the parameter field symbol The phase 1 led turns on in the phase field set to receive cooking parameters 9 Switch off The control panel automatically turns off10 minutes after the cooking cycle ends in manual mode or in automatic mode whether switched off automatically or by pressing the button without any button being pressed The display and operating function leds turn off Only the ES button led remains on To restart the control panel simply press the a button _ page 8 _ Electric Ovens _ rev 1 EKF 411 D
22. llowing its non use The Manufacturer cannot be held responsible for any inaccuracies due to misprints or mistakes in copying in this handbook The Manufacturer reserves the right to modify the products as he deems fit also in the interest of the user without affecting the vital characteristics of functionality and safety page 16
23. the appliance and must be secured on the four threaded holes on the base If necessary the height of the feet can be adjusted by screwing or unscrewing Positioning Position the appliance perfectly horizontally on a table or similar support the table or support must be at least 85 cm above the floor Position it at a distance of not less than 10 cm from the side and rear walls to enable natural ventilating air to circulate freely around it The appliance is not suitable for embedding and for grouped positioning with other identical appliances Electrical connection The appliance must be connected to the electrical mains according to current legal regulations Before making the connection make sure of the following the voltage and frequency values of the power supply system match the values on the technical data plate affixed on the appliance the limiting valve and the system are able to support the appliance s load see the technical data plate the power supply system has an adequate earth connection according to current legal regulations a omnipolar switch with minimum between contacts aperture of the overvoltage category Ill 4000 V sized to the load and conforming to current legal regulations is fitted between the appliance and the mains in the direct connection to the mains the omnipolar switch used for connection is easy to reach when the appliance is installed the yellow green earth wire is not interrupte
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