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ElcoBrandt SUPREME DED400XP1 Service Manual

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EXPRESSO
DED400XP1

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Summary of Contents for ElcoBrandt SUPREME DED400XP1

  • Page 1 EXPRESSO DED400XP1...
  • Page 2 PRODUCT : SEMI-AUTOMATIC BUILT-IN COFFEE MACHINE MODEL : SUPREME SERVICING AND MAINTENANCE SERVICE INSTRUCTION 1/04 FILTER HOLDER GROUP HEAD (O-RING) PAGE 1-7 Problem : Liquid drips over the side of filter holder leaking out from between filter holder and filter holder group head during coffee infusion.

  • Page 3: Servicing And Maintenance

    Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, Built-in Service-Instruction: 1/04 Filter holder group head (O-Ring) Problem: Liquid drips over the side of filter holder leaking out from between filter holder and filter holder group head during coffee infusion. coffee-brew should only flow out of the spouts on the lower part of the filter holders.
  • Page 4 For this electrical appliance, due to various systems that contribute to the working of the machine, it is important that you observe and take note of the technical specifications of the machine which include: Power supply: 240 Volt mains Heat exchanger and operating pressure up to 15 bar Water containers and water conducting pipes (some under pressure) Only authorised Customer Service Engineers are allowed to carry out work on this Espresso machine (the opening of parts of the machine that are secured by screws).
  • Page 5 2. The upper front cover is screwed down with 6 countersunk screws. Unscrew and remove all screws and take cover off. Unscrew the six countersunk screws on the cover. Then remove cover. 3. Using a >>M10 spanner<< and a >>M13 spanner<< proceed to loosen the nuts on the water in-let base arrangement located on the ALU-heat exchanger.
  • Page 6 4. Firstly, using the >>M 10 spanner<< carefully loosen the nut at the base of the L- bend element by >>turning anti-clockwise<<. Attention: There is a threaded connection attaching the L-bend element to the water in-let group. This thread is small and delicate. On the outer thread of the L-bend element there is a mini seal that should not be lost.
  • Page 7 Attention: Provided the filter holder (bayonet coupling) is locked in place, then the upper (M13) nut can be removed from the water in-let group without any problem. If the filter holder is not locked in place, and when the M13 nut is finally ready to be removed, a hand should be placed under the filter holder group head to catch the diffuser as it is released.
  • Page 8 Remove the gasket from its groove with the aid Insert new gasket (large O-Ring) inside out. of a small flat headed screwdriver After the O-Ring has been removed, a new gasket can be inserted, making sure it goes into the groove inside out. Clean the screen, the groove (where the gasket will sit) and the group of any residual deposits (coffee, etc.) before inserting the new O-Ring.
  • Page 9 Once the >>M 13 nut<< has been tightened, reposition the water in-let L-bend element very carefully onto the inner thread of the water in-let arrangement on the heat exchanger and then tighten up the M 10 nut by turning in a clockwise direction making sure that it is >>securely<<...

  • Page 10: Espresso-Machine

    Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, built-in Service-Instruction: 2/04 Filter holder (O-Ring) Problem: During coffee infusion, liquid drips out of the side of the filter holder leaking out of the area between filter holder base and where the spouts are screwed on. coffee-brew should only flow out of the spouts on the lower part of the filter holders.
  • Page 11 For this electrical appliance, due to various systems that contribute to the working of the machine, it is important that you observe and take note of the technical specifications of the machine which include: Power supply: 240 Volt mains Heat exchanger and operating pressure up to 15 bar Water containers and water conducting pipes (some under pressure) Only authorised Customer Service Engineers are allowed to carry out work on this Espresso machine (the opening of parts of the machine that are secured by screws).
  • Page 12 2. Using a small hex key (2,5 mm), unscrew the three socket head screws which fix the two-part filter holder base to the filter holder basket. 3. Now, remove the check plate with the aid of the hex key.
  • Page 13 4. Turn the threaded centre pin on the filter holder so that the spanner surfaces (notches) are exactly parallel to the elongated straight-cut edges of the base plate cavity of the filter holder. Please see photo below! With the aid of a round object (for example a sturdy glass, as show in the photo) that fits into the filter holder basket, place the filter holder over the glass pressing down firmly until the filter holder spring is under tension.
  • Page 14 5. Using the handle, jiggle the base place out of its seating and over the threaded centre pin. 6. The filter basket with the O-Ring (sealing ring) which is part of the centre threaded pin assembly, and, likewise, the coiled-up spring can now be eased out from below.
  • Page 15 Once the O-rings have been exchanged, reassemble the group following the disassembly instructions in reverse order: The >broader< Spiral side must point in the direction of the basket base. Then, once again with the help of a round object (base of a glass), recoil the spring and reassemble the base plate on the filter holder following the photo sequence below:...
  • Page 16 Reposition the check plate in its seating and then reposition socket screws and tighten with the hex key. Then, screw the spout back on and tighten. Finally, lock the filter holder back under its group head and switch electricity back on. Switch the machine on and, after following normal start-up procedure, the espresso machine is once again ready for use.
  • Page 17 Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, built-in Service-Instruction: 3/04 (Thermostat) Problem: Water for brewing coffee or water for hot beverages from the water (or dry steam) wand is not delivered at the desired temperature. The cause may be that one of the two safety thermostats on the heat exchangers defective.
  • Page 18 As an authorised Service Engineer, you should comply with all European testing standards and the relevant safety regulations for electrical appliances, in order not to endanger yourself or other people and to prevent any other kind of hazards and risks. For this electrical appliance, due to various systems that contribute to the working of the machine, it is important that you observe and take note of the technical specifications of the machine which include:...
  • Page 19 2. The upper front cover is screwed down with 6 countersunk screws. Unscrew and remove all screws and take cover off. Unscrew the six countersunk screws on the cover. Then remove cover. 3. With the cover removed, the next photo shows the view of the inside layout from above.
  • Page 20 4. The following picture shows the top-positioned heat exchanger seen from above. In the centre of the heat exchanger there is the water in-let pipe assembly through which heated water under pressure is forced through the tampered coffee during brewing . Top left >>at 10 O’clock<< there is the earth connection with a brass seal under which the temperature sensor (Minimum-Maximum operating temperatures) can be found.
  • Page 21 stick into position and screw tight using upper and lower screws. Put AMP casings back on. b. When the top-positioned thermostat has been unscrewed, the lower one becomes visible and can be accessed. In the same way as before, to test the thermostat push in the reverse (red) push button.

  • Page 22: Phillips Head Screwdriver

    Phillips head rachet Rev-Thermostat bottom heat exchanger Rev-Thermostat Top heat exchanger Phillips head screwdriver No 17 spanner Bottom heat exchanger Top heat exchanger thermostat thermostat ( Coffee brewing water) (Hot water + steam) 165 ° C 195 ° C nut size Screw holdfast plates X 2 no.
  • Page 23 Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, built-in Service Instruction: 4/04 Stops - blocking Problem: The dual function of the drawer handle is not working properly. When the drawer is pulled out, the whole appliance slides forward out of its housing because the blocking mechanism is not working.
  • Page 24 As an authorised Service Engineer, you should comply with all European testing standards and the relevant safety regulations for electrical appliances, in order not to endanger yourself or other people and to prevent any other kind of hazards and risks. For this electrical appliance, due to various systems that contribute to the working of the machine, it is important that you observe and take note of the technical specifications of the machine which include:...
  • Page 25 2. After the machine has been pulled out, now pull at the drawer out until it reaches its most forward position. Remove the top spill plate. 3. Remove the double-partition drawer liner. The next photo shows one of the two (black) stops that need to be worked on.
  • Page 26 Disassemble the whole drawer to make it easier to access the two stops from which you will need to file off a small layer of plastic. 4. The whole drawer assembly is fixed underneath with four counter-sunk screws. These screws can be accessed easily from below and need to be unscrewed. Unscrew these four screws...
  • Page 27 5. Unscrew all 4 screws from below. This frees the whole drawer assembly which can now be taken out. 6. You will find easier to work if you place the whole drawer assembly upside down on a table. Now the corners of glide notches can be worked on comfortably. After having taken out the 4 screws, remove the whole drawer assembly including the glide system and...
  • Page 28 7. Now you need to file away about 2mm of material from the sloping surface of the small, approximately 5 x 5 mm plastic components. It is better to >>file off a bit more rather than a bit less<< , otherwise when you have re-assembled the drawer, you will not have obtained the desired result, and this will mean having to repeat the whole procedure one more time.
  • Page 29 Only after lifting the drawer handle should the appliance glide out of its housing. When the drawer handle is simply pulled, only the drawer should pull out. Reassemble in reverse order: FINISHED!
  • Page 30 Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, Built-in Service Instruction: 5/04 Cable slack Problem: The appliance (cable) that sits between the panel wall of the machine housing and the back panel of the espresso machine on the left-hand side, should form a loop, so that the espresso machine can be glided smoothly out of the housing.
  • Page 31 Safety Advice for Service Engineers Attention: Before commencing any work on the appliance, it should be “disconnected” from the electricity supply. This can be done by: either removing the appliance plug from the mains socket or by isolating electricity supply to socket through safety circuit-breaker or by turning off electricity completely at mains switch.
  • Page 32 Photo 1 Photo 2 2. Photo 3 shows the cable after the side panel has been unscrewed, and how it should run correctly behind the side panel. The cable should be placed as far to the right as possible behind the panel. This can be done by taking the cable between two fingers and pushing it from left to right into the gap inside the panel.
  • Page 33 Photo 5 Check that the red plastic protective clip is always fixed to the narrow curved edge of the back outer panel!!!
  • Page 34 Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, Built-in Service-Instruction: 6/04 Coffee Grinder Problem: The coffee grinder is not delivering coffee even though the sound of the motor can be heard. In correct working conditions, the coffee grinder should deliver ground coffee from the hopper.
  • Page 35 To b. When the milling wheels in the grinder are not turning, but the sound of the motor can be heard, this means that the grinder is damaged and a new grinder must be installed following this service and repair instruction procedure.
  • Page 36 Step-by-step procedure: 1. When the machine has been pulled out, both upper covers need to be unscrewed and removed. 2. First remove the cover at the front. Look at the following photos as a guide: Unscrew the six countersunk screws on the cover.
  • Page 37 3. Next remove the back cover. First, remove the cover on the water container and coffee container. Remove the round plastic filter holder on the end of the water tube and slide the tube out of the opening in the cover, remembering first to use a felt-tipped pen to mark the position of the tube in the water container so that it can be replaced in the same position.
  • Page 38 The safety tabs must be bent so that the container can be pushed up. Photo 4/1 Photo 4/2 Photo 4/3 5. In photo 4, looking in a diagonal direction from above, you can see the grinder motor below. You can also see the wiring. The two AMP – plug connections for the power supply can be disconnected.
  • Page 39 6. After having loosened the earth wire on the front water valve (see photo), you can now get to work on disassembling the grinder. 7. You are looking down into the empty coffee bean hopper. You will see two socket screws that should be unscrewed and removed.
  • Page 40 screw (behind the white cover) can be removed and by jiggling the whole grinder slightly the square axel can be uncoupled ; remove the worm screw! Photo 8/1 Photo 8/2 9. Now the entire grinder assembly consisting of motor and gearbox containing the milling wheels can carefully be taken out.
  • Page 41 10. You should now prepare the new gear motor assembly so that all plug connections have unmistakable >>male<< and >>female << terminals and so that the electrical connections that will be set up will work correctly. Now, working in reverse order, firstly replace the gear motor into its corresponding shaft and roughly position.
  • Page 42 14. When re-assembling the mounting for the water container, remember that the sprung base plate should be engaged in the appropriate holes in the side panels. After the mounting assembly has been reinserted, bend the safety latches slightly outwards so that the mounting for the water container is secured. 15.
  • Page 43 19. A general note needs to be made regarding the replacement of the grinder on the Espresso machine and concerns the pre-setting of the new built-in grinders. The manufacturer has used two markings for recognising the pre-setting that can be found on the moving teeth component of the gear motor and the apparently slow- moving casing.
  • Page 44 Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, built-in Service-Instruction: 7/04 Sensors Problem: Brewing and beverage water (or steam) does not reach the prescribed temperature. The reversible thermostats on both heat exchangers for coffee and/or hot beverages are repeatedly triggered after being manually reset, even though there appears to be no problem with the water supply and in-let system.
  • Page 45 that sufficient water is forced out of the taps. To be checked: (Caution: this should only be carried out by a service engineer if required during servicing!!!) The movement required is like that for coffee or water servicing, pull out the machine (lift up and pull forward) and on the left-hand side, behind, manually activate the safety switch so that the machine is electrified.
  • Page 46 For this electrical appliance, due to various systems that contribute to the working of the machine, it is important that you observe and take note of the technical specifications of the machine which include: Power supply: 240 Volt mains Heat exchanger and operating pressure up to 15 bar Water containers and water conducting pipes (some under pressure) High temperatures in water conducting system and heat exchangers Only authorised Customer Service Engineers are allowed to carry out work on this...
  • Page 47 There are two different types of temperature sensors currently in use. As from Wk 42-2003, the new, larger sensors were introduced. The instructions that follow are valid for both types. The procedure for the older type of sensor will be described first, and then the procedure for the new one.
  • Page 48 The hand tools that are essential for carrying out servicing on the Espresso Machine are shown below and should always be part of your servicing kit. In addition to screw key and two rachets, you will also need two screwdrivers (one normal one and one with interchangeable bits) as well as spanners for a range of widths: 10, 12, 13, 14, 15 and 17.
  • Page 49 2. The upper front cover is screwed down with 6 countersunk screws. Unscrew and remove all screws and take cover off. Unscrew the six countersunk screws on the cover. Then remove cover. 3. With the cover removed, the next photo shows the view of the inside layout from above.
  • Page 50 4. The following picture shows the top-positioned heat exchanger seen from above. In the centre of the heat exchanger there is the water in-let pipe assembly through which heated water under pressure passes. Top left >>at 10 O’clock<< there is the earth connection with a brass seal under which the temperature sensor (Minimum-Maximum operating temperatures- older installation layout) can be found.
  • Page 51 8. Unscrew the earth cable connection 9. Move both earth cables, the earth connection assembly, screw, and earth seal to one side, and use the short insulation wires to take the defective sensor out of the hole in the heat exchanger. 10.
  • Page 52 10/3 11. Now, inside the electronics panel, at the front on the far left remove the multi- terminal plug and carefully lift it up as far as the wire will allow it to be lifted. Now, make room in the lower area for the main circuit board. Look at the view of the circuit board after the large plug has been removed: Here you can see the plug (on the right, black wire) of the sensor that has just been freed.
  • Page 53 See the following step-by-step photos: Loosen all screws Remove cover Empty coffee storage container and after having loosened the two screws, take it out. Now, the back screw fixing the metal plate separating the heat exchanger and electronic zones can be accessed. The front screw can be accessed after having removed the switch cover.
  • Page 54 Plug socket for the two red wires (adapter box) of the Plug socket for flatband connection coffee brewing water sensor between main circuit board and front switch circuit board. Plug socket for the two black wires (adapter box) of the hot water sensor...
  • Page 55 12. If it was clear at the start of the repair that the sensor in the bottom heat exchanger (responsible for Espresso coffee temperature) may also have a problem, then at this step of the repair, the bottom sensor (old installation layout) should be replaced in any case. This means that the top heat exchanger has to be completely disassembled, following the procedure in the next section.
  • Page 56 Proceed with disassembly as follows Remove the elbow union Loosen M8 nut, remove base plates Place a hand under the filter holder group head and catch diffuser as it drops down 12. Now, it is time to disassemble the top heat exchanger. First, the two water connections on the right-hand side need to be loosened.
  • Page 57 12/1 12/2 12/3 This chrome union needs to be loosened Photo 12/1 shows the loosening of the brass nut on the coffee heat exchanger water in- let. Photo 12/2 and photo 12/3 show the loosening of the inbus screw (5 INBUS) Photo 12/4 shows a front view through the window of the chrome union with the 180°...
  • Page 58 13/1 13/2 13/3 13. Photos 13 / 1 to 13/3 show the removal of the top heat exchanger and the freeing of the bottom sensor connection. The sensor with the red wires is under the insulation next to the earth screw.
  • Page 59 14. Apply a quantity of heat conducting adhesive to the sensor with the red wire and, likewise, fill the hole with a quantity of adhesive and push the sensor back into the hole. Replace and press the insulation securely around both wires right up to the black sensor casing (no direct contact should be made between the wire and the heat exchanger shell or the earth wires and/or the earth screw).
  • Page 60 Position the new >>hot water sensor<< with black wires, together with both earth wires and the earth seal under the insulating tape. Caution: rub a quantity of conducting paste on to this sensor and around the hole in the heat exchanger. When repositioning, push to squeeze any excess adhesive and carefully wipe away.
  • Page 61 The yellow two-headed arrow shows the hot water sensor. Loosen using a suitable size spanner! 18. Loosen the sensor using a suitable size spanner and screw out. Next remove the plug from the main electronic circuit board (both size and position have been changed) and pull out the whole cable in the direction of the sensor.
  • Page 62 21. The photo on the next pages shows the view from the front looking on to the heat exchangers. The bottom sensor must be loosened with a spanner and screwed out. Both connecting wires (slack running in front of the heat exchanger) must be disconnected from the old defective sensor and connected up to the connecting plugs of the new sensor.
  • Page 63 b. Plug in both the primary line wires (brown and blue that run out of the left side of the casing wall) to the L and N connection terminal. Plug in both secondary line wires, brown from the circuit board to connection terminal 1 and blue from the multi-terminal plug to connection terminal c.

  • Page 64: Servicing And Maintenance

    Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, Built-in Service Instruction: 8/04 Circuit Board replacement Problem: Semi-automatic processes are not functioning, which are normally engaged by pressing the corresponding pad on the front control panel. Problems may include: ● After pressing the grinder switch there is no reaction ●...
  • Page 65 Cause: a. The switch and/or relative indicator led may be defective. In this case the circuit board needs to be replaced. You can assume that the fault lies with the switch circuit board when individual leds do not work (switch or led fault) or when no leds on the circuit board light up (which however may also be due to no contact being made with safety switch located at the back on the bottom left of the machine or the machine safety fuse system being faulty –...
  • Page 66 Safety Advice for Service Engineers Caution: Before commencing any work on the appliance, it should be “disconnected” from the electricity supply. This can be done by: either removing the appliance plug from the mains socket or by isolating electricity supply to socket through safety circuit-breaker or by turning off electricity completely at mains switch.
  • Page 67 Important production series information: AQ PASS – Serial number Artech – Espresso machine 000/0/00/00/000 Day – serial number Year – (last two digits) Production week in year Day (1-7) of corresponding week Customer reference number Shown above is the previous coding system used up to week 47/2003. The 1 and 2 digit groups were not used.

  • Page 68: General Procedure

    The hand tools that are essential for carrying out servicing on the Espresso Machine are shown below and should always be part of your servicing kit. addition to 5 mm screw key ( for disassembling the heat exchanger)and two rachets, you will also need two screwdrivers (one normal one and one with interchangeable bits) as well as spanners for a range of widths: 10, 12, 13, 14, 15 and 17.
  • Page 69 2. The upper front cover is screwed down with 6 countersunk screws. Unscrew and remove all screws and take cover off. Unscrew the six countersunk screws on the cover. Then remove cover. 3. With the cover removed, the next photo shows the view of the inside layout from above: 4.
  • Page 70 earth connection with a brass seal under which the temperature sensor (Minimum- Maximum operating temperatures) can be found. 5. On the left side >>at 9 O’clock<< there is the reversible thermostat. In the middle, between the two electrical connections, the reverse push button can be seen (beige- brown).
  • Page 71 9. The panel is fixed on the outside by two screws underneath on the right and on the left. First, remove knob on the right, then unscrew right screw underneath and then left screw. See photos! Remove panel. 10. Now check that the flat cable connection is plugged in correctly. To do this, unscrew the four screws that hold the circuit board in its frame( 10/1) and remove the circuit board carefully from its mounting.
  • Page 72 11. Having verified that the switch-circuit board cable connection is sound, you now need to be check switch-side that there is no problem. Trace the flat cable back through the left side of the compartment, and, by carefully moving the various cables that lead to the main circuit board to one side, you will see a small red plug on the main circuit board.
  • Page 73 12. Once you have checked that the cable connection between main and switch circuit board is sound and, likewise that problems are not being caused due to a break in the cable or a bad connection, replace the circuit board. First, remove plugs from old circuit board and plug them into the new one in the same way.
  • Page 74 As before, remove the upper front cover. This means: remove cover from coffee container, remove cover from water container and the filter in the end of the water tube, remove tube from the cover (first mark the position on the tube with a piece of tape where it enters the cover opening so that it can be replaced in the same position later), remove water container and unscrew all cover screws.
  • Page 75 Now, it is possible to access the electronics zone more freely and follow the connections; disconnect them and re-lay them when the new main circuit breaker has been installed. 19. After the transparent coffee hopper has been removed, the plastic spring clips are now accessible that hold the main circuit board in place in the dividing wall between the front and back machine sections.
  • Page 76 20. After having successfully made all connections on the new circuit board and fixed the spring clips so that that the new circuit board can be carefully re-positioned in its seating, finally insert the individual clips through the holes to secure the assembly. 21.
  • Page 77 Servicing and Maintenance Product: Espresso-Machine Model: Semi-automatic, Built-in Service Instruction: 9/04 Water pump/water pipe Problem: The water pump is very noisy (running without water) and hot water and brewing water are being delivered slowly because there is a problem with water flow between the water container and the heat exchanger.
  • Page 78 operating instructions. During this operation the >>Water pump<< normally works quietly pumping sufficient water out of the tap station. Checking procedure: (Caution: this should only be carried out by a service engineer if required during servicing!!!) The movement required is like that for coffee or water servicing, pull out the machine (lift up drawer handle and pull forward) and on the left- hand side, at the back of the machine, manually activate the safety switch so that the machine is connected to electricity supply.
  • Page 79 Safety Advice for Service Engineers Caution: Before commencing any work on the appliance, it should be “disconnected” from the electricity supply. This can be done by: either removing the appliance plug from the mains socket or by isolating electricity supply to socket through safety circuit-breaker or by turning off electricity completely at mains switch.
  • Page 80 Important production series information: AQ PASS – Serial number Artech – Espresso machine 000/0/00/00/000 Day – serial number Year – (last two digits) Production week in year Day (1-7) of corresponding week Customer reference number Shown above is the previous coding system used up to week 47/2003. The 1 and 2 digit groups were not used.
  • Page 81 The hand tools that are essential for carrying out servicing on the Espresso Machine are shown below and should always be part of your servicing kit.
  • Page 82 In addition to 5 mm screw key ( for disassembling the heat exchanger)and two rachets, you will also need two screwdrivers (one normal one and one with interchangeable bits) as well as spanners for a range of widths: 10, 12, 13, 14, 15 and 17.
  • Page 83 3. With the cover removed, the next photo shows the view of the inside layout from above: If you need to >>create more room<< to prepare for changing the tube and/or pump, you will need to remove the top back cover. This means: remove cover from coffee hopper, remove cover from water container, remove filter from end of tube and remove tube from the cover (first mark the position on the tube with a piece of tape where it enters the cover opening so that it can be replaced in the same position later), remove...
  • Page 84 In the photos on the left and right, you can see the Flowmeter; Remove in-let tube (water from water container) and attach a new, more robust tube of a suitable length. As a precaution, check the flowmeter. Turn the cover of the flowmeter from >>9 O’clock<<...
  • Page 85 CAUTION: When placing the switch panel to one side, make sure that the flat cable does not become disconnected from the plug mounting on the main and switch circuit boards. Do not pull unnecessarily!!!!!!!!!!!!!!! 6. Now the pump can be disassembled from the machine. Follow the step-by-step procedure shown below: Through the front >>housing panel window<<, on the right, disconnect the water in-let pipe to the pump using...
  • Page 86 Remove the connecting tube from the flowmeter. Next disconnect the electrical connections from the pump. See the next photo sequence: Make a note of the connections: a. blue x2 = left b. red x1 = right and remove cable and pump. Now, with the pump out of the machine, remove pipe.
  • Page 87 7. Now, reinstall pump in machine, laying the in-let pipe at the back and into the flowmeter area. Re-connect electrics to flowmeter (two blue and one red). Position pump and, again holding the butterfly nut, tighten socket head screws. 8. Attach the high-pressure water pipe using the brass screw band and tighten so that it is >>water tight.
  • Page 88 c. Replace back cover. Now, re-insert the new, harder water tube through the opening in the cover and when replacing the cover make sure that the tube has no kinks. Screw back cover into place. d. Replace coffee cover. e. Re-insert the water tube through the opening in the blue water container cover (up to the taped mark) and re-insert filter in the end.
  • Page 89 Safety Advice for Service Engineers Attention: Before commencing any work on the appliance, it should be “disconnected” from the electricity supply. This can be done by: either removing the appliance plug from the mains socket or by isolating electricity supply to socket through safety circuit-breaker or by turning off electricity completely at mains switch.
  • Page 90 Steam nozzle Coffee heat exchanger Water pump Flowmeter Water + steam heat exchanger Filter holder Water container Coffee solenoid valve Water + steam valve Water + steam solenoid valve >> Technical layout diagram<< of ARTECH- Espresso-Machine >>SUPRÈME<< This is a semi-automatic model, in which coffee grinding (directly into the filter holder) is separate from Espresso coffee delivery.
  • Page 91 MODEL : SUPREME HYDRAULIC DIAGRAM pump water container fluxmeter steam tap steam heat exchanger solenoid valve solenoid valve coffee heat exchanger water /coffee basin...
  • Page 92 WIRING DIAGRAM - MODEL SUPREME 1. CURRENT PLUG 2. CABLE FIXING 3. SECURITY SWITCH 4. FILTER 5. WATER/STEAM HEAT EXCHANGER 6. COFFEE HEAT EXCHANGER 7. WATER PUMP 8. GRINDER MOTOR 9. WATER/STEAM SOLENOID VALVE 10. COFFEE SOLENOID VALVE 11. LIGHTNING 12.