Hotpoint H/A - Ariston automatic, built-in coffee machine MCX 103 X - MCK 103 X/HA

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1 Hotpoint H/A - Ariston automatic, built-in coffee machine MCX 103 X - MCK 103 X/HA

2 Automatic, built-in coffee machine Contents 1) Technical Specifications 2) Accessibility 3) Wiring diagram 4) Water circuit diagram 5) Test procedures 6) Troubleshooting 7) Technical info

3 Technical Specifications

4 Unscrew the first six screws Unscrew the first vi securing six screws the surround securing on the right right side hand of side the - surround... and the other six screws securing the surround on the left. Removing the surround continued

5 Unscrew the three screws securing the surround at the top, near the brew group.. Removing the surround and the two screws at the bottom. continued

6 Unscrew the two screws securing the cover on the right, and the 1 screw on the left (be careful when putting back together). Removing the surround continued

7 On taking off the cover, remove the faston and other connectors, as shown in the photo. Removing the surround

8 Unscrew the screw on the left and The cappuccino foamer pipe can then be pulled out... on the right. If this is too awkward to do, we recommend remove the switch and.. unscrewing the 3 screws. Removing the surround

9 To remove the outer casing, unscrew the 3 screws in the rear panel. Removing the rear panel. continued

10 and unscrew the screws shown in the photo on both the right and left. Caution: there is also a screw at the bottom of the trays. Remove the casing. Removing the casing

11 To remove the cover, unscrew the 4 screws as shown in the photos. Removing cover

12 Unscrew the 2 screws securing the finger guard and pull it upwards to remove. Unscrew the plastic cap Dismantling the coffee grinder

13 Unscrew the 3 screws securing the coffee bean hopper. Dismantling the coffee grinder

14 Unscrew the screws securing the knob. Dismantling the coffee grinder

15 Lift off the bean hopper. Dismantling the coffee grinder

16 Disconnect the two faston connectors from the motor and pull the grinder up and out. Dismantling the coffee grinder

17 Unscrew the rubber cap Flow meter Detach connector Detach connector Using a screwdriver as a wedge, unhook the flowmeter Dismantling the flow meter

18 Pull out the small spring Remove the wire spring Ulka pump Pull out the tube; be careful with the o-ring Pull out the tube continued Dismantling the pump

19 Pull out the tube feeding into the pump Holding the pump lug with a 12mm spanner, unscrew the valve + damper assembly Pull the pump out from its rubber support, first from the bottom then from the top. Dismantling the pump

20 Unscrew the 5 screws securing the circuit board to the casing; be careful with the cable glands! 2 at the top 1 in the middle Power board 2 at the bottom Removing the circuit board

21 Unscrew the 2 screws indicated Pull out the tubes from the damper and valve Steam unit Remove the steam vent Dismantling the steam unit Unscrew the earth screw continued

22 Take out the earth faston connector from the solenoid valve. Now you can extract the steam unit to replace the full sub-assembly, solenoid valve and TCO s (TCO s are secured with a nut on the inside). Dismantling the steam unit

23 To remove the generator, disconnect tubes from couplers, there are 4 screws to unscrew. Caution: hold the nuts in place on the inside. Dismantling generatore + meccano valve continued

24 Near the slide Near the solenoid valve Inside the door Inside the tank compartment Dismantling generatore + meccano valve

to rise to the top dead center, pull out the plug then tighten the four screws to a torque value of 2/3Nm.

25 Caution: When assembling, align the meccano valve with the brew group. Position the 4 screws + 4 bolts, then give them a few turns; then, with the machine in test mode, allow the carriage to rise to the top dead center, pull out the plug then tighten the four screws to a torque value of 2/3Nm. 2 Dismantling generatore + meccano valve 1 4 Final torque for front and back screws of 2/3Nm 3 Screw tightening sequence 1. Back left 2. Front right 3. Back right 4. Front left

26 Remove the 2 faston connectors from the motor board... After removing the steam unit, you can also remove the positioning assembly. and the faston connector from the earth. Dismantling positioning assembly

27 Remove the brew group. Unscrew the 2 screws. (When reassembling, add LOCTITE Type 243 to the thread and tighten to a torque of Nm) Dismantling positioning assembly Remove the carriage.

28 Unscrew the self-tightening screw. You can now pull out the positioning unit. Dismantling positioning assembly

29 THEORETICAL DIAGRAM Wiring diagram

30 Wiring diagram M1 M2 M3 M4 M5 M6 MICRO KEY TOP UNIT BOTTOM UNIT COFFEE GROUNDS DRAWER ACCESS DOOR IFD PRESENCE PIPETTE PRESENCE PRACTICAL DIAGRAM MICRO KEY

31 water circuit diagram

Touch Super Vapour test procedure MODEL TEST PROCEDURE ICON AND ASSOCIATED LOAD ACTIVATION ICON LOAD Long/short PUMP LOAD TEST MODE With the machine on stand-by (off but with the main on/off switch

32 Touch Super Vapour test procedure MODEL TEST PROCEDURE ICON AND ASSOCIATED LOAD ACTIVATION ICON LOAD Long/short PUMP LOAD TEST MODE With the machine on stand-by (off but with the main on/off switch set to I), open the service door and press and hold the 1 CUP, STRENGTH and MENU keys at the same time for at least 6 seconds, or until the message SELECT TEST appears on the display. After this, shut the service door and press the STEAM icon: LOAD TEST MODE will appear on the display. To exit test mode, unplug from the power supply. Key Lock Menu Strength 2 cups 1 cup Steam UP menu MOTOR UP + LIGHT HEATER STEAM UNIT Solenoid valve 2 (brew head) + FAN Solenoid valve 1 (drain) Solenoid 1 + Solenoid 2 GRINDER Hot water MOTOR DOWN

Touch Super Vapour test procedure MODEL TEST PROCEDURE ICON AND ASSOCIATED DISPLAY Icon Display Unit NOTES 1 cup BUTTON 1 DISPLAY TEST MODE With the machine on standby (off but with the main on/off

33 Touch Super Vapour test procedure MODEL TEST PROCEDURE ICON AND ASSOCIATED DISPLAY Icon Display Unit NOTES 1 cup BUTTON 1 DISPLAY TEST MODE With the machine on standby (off but with the main on/off switch set to I), open the service door and press and hold the 1 CUP, STRENGTH and MENU keys at the same time for at least 6 seconds, or until the message SELECT TEST appears on the display. After this, shut the service door and press the 1 CUP icon: all digits will light up on the display followed by the words DISPLAY TEST MODE. 2 cups Steam Long/short STRENGTH Down Menu Key Lock MENU UP menu OK Hot water On/Stand by BUTTON 2 BUTTON 4 BUTTON 9 BUTTON 10 BUTTON 8 BUTTON 12 BUTTON 11 BUTTON 6 BUTTON 7 BUTTON 5 BUTTON 0 When not used for 10 seconds, the machine exits test mode. The original language is reset and the first priming enabled.

Troubleshooting Before doing anything or replacing any components, make sure you have all service documentation for the model to be repaired (specifications, test procedures, technical reports and

34 Troubleshooting Before doing anything or replacing any components, make sure you have all service documentation for the model to be repaired (specifications, test procedures, technical reports and information). Possible complaints you may receive from customers are listed below. The first thing to do is check if there are reasonable grounds to the complaint. It is important to determine if the problem was caused by: 1) Incorrect use of appliance by the customer. 2) Technical fault.

35 Troubleshooting 1) Complaints may be caused by incorrect use of the appliance, and generally refer to: - The coffee is not hot. - The coffee is not very creamy, and doesn t taste nice (see table on next page)

36 Troubleshooting Problems complaints What to ask the customer Possible causes Remedies The coffee is not hot. Caution: check the temperature after the third coffee has been made; the temperature should be 78 C+- 3 C When did the problem occur? Right from the beginning or after a period of time? - The cups haven t been warmed. - The brew group is cold. The coffee temperature set is too low. Hot water tank is crusted with limescale. - Heat the cups with hot water. (Especially on cold days) - Heat the brew group by selecting RINSE From the menu, set a higher coffee temperature. (There are three options) Check how many coffees have been made and how often it has been descaled. Check the temperature of the coffee leaving the brew head; check after the third coffee. The temperature should be 78 C+- 3 C It it is below this, descale and try again. continued

37 Troubleshooting Problems complaints What to ask the customer Possible causes Remedies The coffee tastes bad, is watery and not very creamy. When did the problem occur? Right from the beginning or after a period of time? The coffee grind is too coarse. The grinders are worn out. Check grinder settings. Turn the grinder setting knob to position 4/5 (factory setting) with the grinder running; brew 2/3 coffees and check how they are delivered. If nothing has changed, turn the knob to position 1 (with the grinder running) and try again, brewing 2/3 coffees. If it is still being ground too coarsely, take the machine away. (See specifications on next page) Replace the grinder. continued

38 Troubleshooting Problems complaints What to ask the customer Possible causes Remedies The coffee tastes bad, is watery and not very creamy. When did the problem occur? Right from the beginning or after a period of time? The coffee is too finely ground. A different type of coffee has been used. Check grinder settings. Turn the grinder setting knob to position 7 with the grinder running; brew 2/3 coffees and check how they are delivered. If it is still too finely ground, take the grinding unit away. (See specifications on next page) Readjust the grinder settings to suit personal taste. Have you changed type of coffee? Not a good quality coffee or not suitable for use with espresso machines. Use a better quality coffee / use a blend that is recommended for espresso machines.

39 Troubleshooting 2) When a fault is encountered, the machine may generate the following messages: - General alarm - Coffee too finely ground, adjust grinder. - Fill the coffee bean hopper. - Fill the tank. - Descale (see table on next page)

40 Troubleshooting Error message General alarm When? Possible causes Remedies The message appeared as soon as the machine was switched on. The message appeared when the motor was briefly actioned. Six minutes after it was switched on, the machine still showing that it is heating up. NTC, temperature sensor. Upper or lower micro limit switch. Hall cell sensor board Main PCB Safety TCO activated. Heating element not heating. Main PCB Check the sensor connection on the PCB; check the resistance in ohms: if it is 0 (short circuit) or infinite (open circuit) replace the component. Check microswitches are working properlty, and replace as applicable. Check the connection between the Hall cell sensor and circuit board. Replace if necessary. Replace. Replace. Replace. Check the connection and replace as necessary. continued

41 Troubleshooting Error message When? Possible causes Remedies General alarm After switching on, there was a funny noise when the brew group moved. The upper and lower microswitches are not closed. Check if the two micro-switches are working properly, and if necessary replace them. Coffee too finely ground, adjust grinder. While operating Air in water circuit Reset the coffee grinder settings by moving the knob to a higher number. (Always do this with the grinder running). Push the tank to make sure it is securely engaged, bleed any remaining air from the circuit (press hot water ). Check the connection and replace the flow meter if necessary. Check the permanent filter below the water tank to make sure there is nothing obstructing the flow of water; clean and replace as necessary. Check the generator by disconnecting the inlet water pipe and starting the pump (in test procedure) to remove the air pocket. continued

42 Error message Fill coffee bean hopper (make sure it is full) Fill the water tank (make sure it is full) Troubleshooting When? Possible causes Remedies The message persists even when there are beans in the hopper. There was a funny noise when coffee was grinding. The message persists even when there are beans in the hopper. The motor is not rotating. The message appears even when there is water in the tank. Friction noise due to stones or other objects in the grinding wheels. The motor is faulty. Float Reed switch sensor. Dismantle the top part of the grinder unit and take out the stone or excess coffee grains inside. Check the grinder motor is working using the test procedure; if the motor is idling the transmission belt is broken. The entire grinder needs to be replaced in this case. Replace the entire grinder unit. Check the float in the tank and that it is free to move in its assigned position. Check the reed switch, making sure it is connected properly. Replace if necessary. continued

43 Troubleshooting Error message When? Remedies Descale When the machine indicates that descaling is required, is is not a sign of a fault, but notification that the machine, the generator and relevant pipes need to be thoroughly cleaned to get rid of lime scale. The flow meter measures the amount of water used and when a preset limit is exceeded the machine generates an alert. Four different water hardness levels can be set. The reactive strip supplied with the machine is a quick way of testing water hardness so you can set it to the correct level. (1 soft water... 4 very hard water) The 4 settings are: water hardness 1 = 250 litres water hardness 2 = 130 litres water hardness 3 = 80 litres water hardness 4 = 40 litres Problems occur when the descaling message appears right after the appliance has been descaled. In this case, it means that it was not done properly and has to be repeated. Descale.

44 Technical Information Setting the grinder Unscrew the screw on the knob and pull it out. Unscrew the two screws and remove the safety guard. Turn the ring shaft clockwise until the end of stroke position. Take out the moving grinder. continued on following page...

45 Technical Information Setting the grinder Check that the elastic ring is in the right position. Remove the retaining ring. continued on following page...

Turn the ring nut CLOCKWISE for finer grinding.

46 Technical Information Setting the grinder Turn the ring shaft anticlockwise until the end of stroke position then pull it out. Turn the ring nut CLOCKWISE for finer grinding. Turn the ring nut ANTICLOCKWISE for coarser grinding. Turn in 1 or 2 clicks at a time. continued on following page...

rib indicated. Insert the retaining ring.

47 Technical Information Setting the grinder Insert the shaft, aligning the scale on the ring nut with the rib indicated. Insert the retaining ring. (Make sure you insert it correctly.) continued on following page...

48 Technical Information Setting the grinder Turn the ring shaft CLOCKWISE until the end of stroke position then insert the grinder. Then turn it ANTICLOCKWISE until the end of stroke position.

Coffee System Troubleshooting and Repair

Coffee System Troubleshooting and Repair Page 30 CM24-1 Operation Sequence POWER ON/OFF When turning on the coffee system the brewer motor cycles once and the display reads Please Wait Heating, Once heating