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Electrolux SAHARA Service Manual
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Electrolux SAHARA Service Manual

Electrolux SAHARA Service Manual

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© ELECTROLUX HOME PRODUCTS
Customer Care - EMEA
Training and Operations Support
Technical Support
DRYERS
Condense / Heat Pump Tumble Dryers - DISASSEMBLY
Publication number:
599 796-724
EN
Edition: 08/2019 - Rev.0.2

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  • Page 1 © ELECTROLUX HOME PRODUCTS Customer Care - EMEA Training and Operations Support Technical Support DRYERS Condense / Heat Pump Tumble Dryers - DISASSEMBLY Publication number: 599 796-724 Edition: 08/2019 - Rev.0.2...

  • Page 2: Precaution

     All the work to be performed inside the appliance requires specific skills and knowledge and may only be carried out based on SAHARA and OPTIFLOW structures by qualified and authorised Service Engineers fitted with EDR10, EDR11, EDR12, EDR14 EU, EDR16 electronic control ...

  • Page 3: Table Of Contents

    CONTENTS 1 PRECAUTION 2 PURPOSE OF THIS MANUAL 3 CONTENTS 4 OPERATING PRINCIPLE 5 FUNCTIONAL PARTS 6 ELECTRICAL EQUIPMENT 7 DRYER 8 HOUSING 9 DISASSEMBLY 2/56 Technical Support MP 599 796-724 Rev.0.2 CONTENTS...

  • Page 4: Operating Principle

    OPERATING PRINCIPLE OPERATING PRINCIPLE Condense drying system Heat Pump drying system Water tank Water tank 100% 100% Energy of which Energy consumption Energy 50% Energy input input is recovered Air flow Heating Air flow element Refrigerant flow Water Compressor pump Water Cooling air pump...
  • Page 5 CONDENSE DRYERS - DRYING CIRCUIT There are two air groups inside the appliance: Operating principle One hot one closed in on itself inside the appliance; • • One open cold one, for the circulation of ambient air through the condenser. The first air group, which is hot and closed in on itself, circulates inside the appliance: The fan (1) pushes air inside the heat exchanger (5), and from this via the heater unit (2), the air heats up and via a conveyor enters inside the drum passing through the holes in the back panel.
  • Page 6 4.3 HEAT PUMP DRYERS - DRYING CIRCUIT Operating principle Operating principle with auxiliary condenser Operating principle with steam generator Evaporator 7. Air circulation fan 2. Condenser 8. Capillary tube 3. Drum 9. NTC sensor 4. Condensation collection tray 10. Compressor cooling fan 5.
  • Page 7 The cycle of the tumble dryer heat pump consists in evaporating, compressing, condensing and expanding the refrigerant. By pressing the START/PAUSE button the drying cycle begins, the gas in the circuit is conveyed by the compressor (6) to the condenser (2), where at the outlet the circulation pipe known as capillary (8) narrows.
  • Page 8 4.4 STEAM GENERATOR PRINCIPLE STEAM GENERATOR TANK Operating principle Version with cover 1. Tank fixing points 2. Overflow outlet 3. Water outlet towards the boiler 4. Water inlet connector from the condensation trap 5. Water filling assembly and tank connector 6.
  • Page 9 WATER CIRCUIT – CONDENSE / HEAT PUMP The condensation water that forms inside the exchanger is Condense Heat Pump collected in a trap. There is a float (5) inside this trap that informs the circuit board that there is water. This powers a pump (1) which conveys the water through the red pipe (2) from the trap to the tank inserted in the tank support (4).
  • Page 10 4.6 WATER CIRCUIT – HEAT PUMP WITH STEAM GENERATOR The condensation water that forms inside the exchanger is Heat Pump with Steam Generator collected in a trap. There is a float inside this trap that informs the circuit board that there is water. This powers a pump which conveys the water along a pipe (1) from the trap to the main tank;...

  • Page 11: Functional Parts

    The drum is made up of steel or zinc casing where inside there are three blades positioned at 120° one from the other which move the washing around during drum rotation. Sahara Optiflow SAHARA DRUM DRUM BLADE BACK FLANGE BLADE...
  • Page 12 AIR SEAL AND DRUM ROLLERS Sahara Optiflow Back side – rollers mounted on the upper part of the basement Back side – rollers attached to the back panel Front side – rollers mounted on the upper part of the basement Front side –...
  • Page 13 Sahara Optiflow 1. Drum 2. Drum rotation roller 3. Front air seal 4. Front air conduit 5. Back panel 6. Rear air seal 7. Drum lock* ____ * accessible from the back of the appliance for transportation purposes and unlocked automatically during first drum’s rotation...

  • Page 14: Electrical Equipment

    ELECTRICAL EQUIPMENT CONDUCTIVITY SENSOR These electronics use a conductivity sensor, comprising 1. Main electronic circuit board an electronic circuit (located inside the main circuit board) 2. Control board and a part outside the board 3. Conductivity sensor comprising two sensors positioned on the front air conduit.
  • Page 15 LEVEL SENSOR The condensation water level sensor is fitted on the rear of the tumble dryer and beside the tank filling pump. It consists of a float with a magnet at the top and a reed switch positioned on the float guide/support. When the water forming on the heat exchanger (condenser) falls into the collection tray this causes the float to rise up subsequently bringing the magnet closer to the reed switch which sends a signal to the main circuit board activating the tank loading pump.
  • Page 16 HEATER UNIT The heater unit is made up of two heating elements with different powers, inserted in ceramic Heating element filament. supports and the whole is Heating element filament. surrounded by a sheet metal casing. Safety thermostat. A normally closed safety NTC Safety thermostat/probe.
  • Page 17 DRUM LIGHT The drum light consists of a high luminosity LED diode 3.3Ω inserted in a plastic support and fitted onto the front air conduit. 3.3Ω The lamp is powered directly by the main circuit board when the door is opened with a voltage of 5V. Current 150mA Power...
  • Page 18 STEAM GENERATOR TANK LED LIGHT AND LEVEL SENSOR The LED lights and level sensor is positioned on the left side of the tank containing the water necessary to generate steam. It consists of 5 LED diodes (1) which only light up if you select a cycle that uses steam and a magnetic switch (2) that is triggered by a float with a built-in magnet found inside the tank.
  • Page 19 6.11 COMPRESSOR R134a The compressor activates the coolant fluid circuit. Power supply voltage 220V 50Hz Power consumed 480 Watt. Main coil resistance 6.84Ω ± 7% A Line Auxiliary coil resistance 5.88Ω ± 5% Heat protection Overall weight 8.5kg C Run capacitor Oil 210cm³...
  • Page 20 6.14 MOTOR – Heat Pump Dryers 6.14.1 R134A The three-phase motor used in this tumble dryer has permanent magnets and is driven directly by 1. Fan (with hot air circulation straight blades) the main board. 2. Belt tensioner 3. Motor 4.
  • Page 21 6.14.2 R290 The asynchronous mono-phase motor used in this tumble dryer is driven directly by the main board. 1. Fan (with hot air circulation straight blades) 2. Motor 3. Groove on the shaft The motor unit used in appliances filled up with Propane (R290) has a certificated thermo protector. To differentiate it from other motors a groove is made on the shaft (3).
  • Page 22 6.14.3 MOTOR – CONDENSE DRYERS Both the asynchronous single-phase motor and the asynchronous three-phase or inverter motor 1. Fan (with hot air circulation straight blades) look the same. The only difference lies in the 2. Belt tensioner connections and operation. 3.
  • Page 23 Asynchronous single-phase motor Technical detail Asynchronous three-phase or Inverter motor Single-phase Three-phase or Inverter Yellow-green Yellow-green Power supply voltage 220 V 230 V Frequency 50 Hz 60 Hz Blue Power 167 W Blue 2660 3600 Coil resistance 1 - 3 18.1 Ω...

  • Page 24: Dryer

    DRYER BASEMENT MODIFICATION Sahara basement Sahara basement with steam generator Optiflow basement R134a Information Evaporator Basement replacement 2. Condenser The basement for Optiflow R134a  comes already equipped with 3. Compressor evaporator, condenser and 4. NTC temperature sensor compressor connected by the pipes.
  • Page 25 Optiflow basement R290 Information Basement replacement The basement for Optiflow R290  comes already equipped with evaporator, condenser and compressor connected by the pipes. Due to the safety precautions it is  forbidden to repair basements filled up with Propane R290. Only a replacement of the whole ...

  • Page 26: Housing

    HOUSING BACK PANEL Sahara Optiflow The back flange is the part 1. Plastic back panel of the back panel and without flange therefore, it is non-moving 2. Back cover 1. Back panel 2. Back flange 25/56 Technical Support MP 599 796-724 Rev.0.2...

  • Page 27: Disassembly

    DISASSEMBLY WORKTOP SAHARA OPTIFLOW Remove the tank. Loosen the front fixing screw. Loosen the 2 rear fixing screws. Move the worktop towards the rear and remove it. SIDES CONDENSE HP VERSION HP STEAM VERSION 26/56 Technical Support MP 599 796-724 Rev.0.2...
  • Page 28 MAIN CIRCUIT BOARD SAHARA OPTIFLOW Remove the worktop. Remove the right side panel. Release the fixing clips from the board guard and remove it by pulling it up.
  • Page 29 CONTROL PANEL Remove the worktop. Loosen the 2 screws that secure the control Turn it forward. Remove the tank. panel to the tank support. Remove the wiring, making a note of the Loosen the three screws securing the control position of the various connectors. panel to the uprights and air conduit.
  • Page 30 CONTROL BOARD To remove the selector board and respective dial, loosen the two screws that secure the board to the control panel (do not loosen the central screw). Move the clips that secure it in place and raise In addition to the board, the selector dial will also be removed: to remove the dial, simply slip it off the pin Using a screwdriver, release the fixing clips...
  • Page 31 Remove the six screws, which secure the Release the hooks securing the display board display board cover and three screws from Unclip and take out the selector’s box. to the control panel. selector board. Carefully take the cover out and pay attention to the gasket that sits on it.
  • Page 32 PROGRAMME SELECTOR DIAL / BUTTONS SPRING AND LED LIGHT DIFFUSER / BUTTONS Programme selector dial LEVEL A, C, F, G SERIES 6 SERIES 7, 8, 9 With the aid of a screwdriver press the three Press the 4 anchor clips inwards and locking clips on the know cover inwards.
  • Page 33 DOOR Remove the tumble dryer door as follows: Unscrew the 2 screws that hold the door to the front. Lift up slightly so that the hook unhooks and remove it. Warning: Glass door  The glass door weighs approximately 4.5 kg PLASTIC DOOR HANDLE, LATCH AND HINGE Loosen the 8 screws around Loosen the 2 screws securing...
  • Page 34 PLASTIC DOOR MICRO-SWITCH LEVER Insert the door micro-switch lever so that the reference pocket is positioned towards the inside the inner frame and it coincides with the notch in the outer frame. 9.10 TRANSPARENT DOOR HANDLE, LATCH AND HINGE Unscrew the remaining 8 screws that hold the frame to the door and remove it.
  • Page 35 Door hinge Internal door frame Internal transparent plastic pane Plastic cover plate External transparent plastic pane Door latch 34/56 Technical Support MP 599 796-724 Rev.0.2 DISASSEMBLY...
  • Page 36 Unscrew the 13 perimetral screws that attach the inner door frame. Door hinge Internal door frame Internal transparent plastic pane External transparent plastic pane welded (not removable) with external door frame Plastic cover plate 35/56 Technical Support MP 599 796-724 Rev.0.2 DISASSEMBLY...
  • Page 37 Insert the lever as far as it can go to re- assemble it so that the fastening clips block it 9.12 LEVEL SENSOR AND CONDENSATION WATER PUMP Condense Heat Pump SAHARA Heat Pump Optiflow Remove worktop. Loosen the screws that hold on the level sensor Remove the condensation water filling pump and Remove the left side panel (water tank).
  • Page 38 9.13 LEVEL SENSOR Condense Heat Pump SAHARA Heat Pump Optiflow Detach the connector and remove it. Slightly move the locking hooks indicated by the arrows and remove the level sensor by pulling it upwards. 9.14 CONDENSATION WATER PUMP Using pliers, loosen and raise the clamp securing the red pipe (supply) and raise it a few centimeters.
  • Page 39 Using pliers, loosen Disconnect the 2 pump connectors and the and raise the clamp level sensor connector. securing the supply Loosen the screw that holds the whole pump pipe and raise it a and level sensor to the machine and remove it. few centimetres.
  • Page 40 5 screws Press the 2 fixing clips and remove and remove it. indicated by the arrows. the connector from its seat. 9.16 TEMPERATURE PROBE Condense Heat Pump SAHARA Heat Pump Optiflow 39/56 Technical Support MP 599 796-724 Rev.0.2 DISASSEMBLY...
  • Page 41 Remove the worktop. Remove the worktop. Remove the right side panel. Remove the right side panel. Disconnect the connector. We recommend you remove the drum rotation motor to make this operation easier Pull the probe up to remove it from its seat. Disconnect the probe.
  • Page 42 9.18 MOTOR PROTECTOR – Heat Pump Dryers Warning: To reach the thermal motor Wires protection, loosen the screw indicated by the arrow which  Before disconnecting secures the protective cap. the electrical wires, The thermal motor protection is make a note of their located inside it (indicated by the position.
  • Page 43 9.20 MOTOR – Condense Dryer Asynchronous single-phase motor Remove the 2 front and rear screws. Disconnect the motor connector. Using pliers, release the spring keeping the belt tensioner in tension. Loosen the screws that secure the front and rear motor fixing brackets. Raise them, turn them and remove them by pulling them off the rear hook.
  • Page 44 9.21 MOTOR – Heat Pump Dryer Three-phase asynchronous motor Loosen the screws that hold the front and rear motor fastening rods, lift them up by rotating them and remove them by pulling them off the rear hook. Disconnect the motor connector. Using a pair of pliers, detach the spring that keeps the tensioner Remove the right side panel.
  • Page 45 Loosen the bolt that holds the hot Loosen the 2 screws that hold the air circulation fan. inverter motor board support rod. Remove it by pulling it outwards. Pull it upwards and remove it. Disconnect the motor connector. Slightly rotate the whole motor unit. Using pliers, release the spring Lift it up and remove.
  • Page 46 9.23 STARTUP CAPACITOR Remove the worktop. Remove the right side panel. Remove the drum rotating motor. Disconnect the 2 connectors. Loosen the screw that holds the condenser in its slot and remove it by pulling it upwards. Remove the worktop. Remove the right side panel.
  • Page 47 9.24 REAR PANEL – Condense Dryer Remove the worktop. Disconnect the power supply cable from the main board. Remove the sides. Loosen the 5 screws securing the Disconnect the heating element and back panel to the appliance base. remove the connector from its seat (you do not need to remove the Loosen the 4 screws securing the cable cleat).
  • Page 48 Heat Pump Heat Pump with steam generator Remove the rear air conduit. Loosen the screws securing the back panel to the appliance base. Loosen the 4 screws securing the rear panel to the side crossbars and the screw securing it to the central crossbar.
  • Page 49 Loosen the screws securing the rear panel to the basement. Tilt and remove the back panel. Loosen the 4 screws securing the rear panel to the side crossbars and the screw securing it to Loosen the screws that hold the rear air conduit. the central crossbar.
  • Page 50 9.27 REAR AIR SEAL SAHARA OPTIFLOW Condense Heat Pump Warning: Air seal Remove the back panel. When repositioning the air seal, make sure the joint is positioned more or less under the tank Raise the air seal to remove it completely.
  • Page 51 9.28 ANTI-ENTANGLEMENT CONE – Heat Pump SAHARA The anti-entanglement cone ensures Loosen the three fastening screws that during the drying stage the to also remove the base. washing does not get tangled up in Insert the cone in its slot to re- itself.
  • Page 52 9.30 STEAM GENERATOR WATER TANK AND STEAM GENERATOR UNIT WATER TANK STEAM GENERATOR UNIT To remove the Disconnect the wiring from steam generator the level sensor and LED tank board Remove the lid to Release the pipes indicated empty the steam by the red arrows generator hydraulic Loosen the 2 screws...
  • Page 53 9.32 KICK PLATE PANEL Remove the front panel. Loosen the rear screw on Using a pair of pliers, unhook When re-assembling, firstly insert the the right side. the holding clips on the left and 3 lower blocking hooks. Loosen the 2 front screws. right.
  • Page 54 Loosen the 2 front screws. When re-assembling, firstly insert the kick plate and then the plastic mesh With help of a screwdriver plate. carefully unhook the hinges. Remove the front panel. Push the plastic mesh plate towards the right to release it from the hooks of the plinth support and then take it out.
  • Page 55 9.33 FRONT AIR CONDUIT Remove the front panel. Condense SAHARA - Heat Pump OPTIFLOW - Heat Pump Loosen the 13 screws securing the front air conduit to the crossbars, to the tank support and to the appliance base. Raise the two crossbars slightly so as to remove them.
  • Page 56 Disconnect and pull out the cabling. 9.36 HEAT EXCHANGER COMPARTMENT DOOR Open the outer door of the kick plate. Condense SAHARA Heat Pump OPTIFLOW Heat Pump Open the heat exchanger compartment door completely. Turn it slightly so that the hinge pins are fully released from their seats.
  • Page 57 9.37 HEAT EXCHANGER COMPARTMENT DOOR SEAL Open the outer door of the kick plate. Condense Heat Pump Open the heat exchanger compartment door completely. You do not need to remove it. Raise the seal and remove it 56/56 Technical Support MP 599 796-724 Rev.0.2 DISASSEMBLY...

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Optiflow

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