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Related Manuals for Kenwood DeLonghi Cooking Chef KM070
Summary of Contents for Kenwood DeLonghi Cooking Chef KM070
- Page 1 SM0001 Issue 1 Cooking Chef Technical Service Manual Models: KM070 KM080...
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Page 3: Table Of Contents
Contents 1. Safety Information 2. Specifications 3. Features and Operation a. Induction Cooking b. Display c. Temperature Measurement d. The Bowl e. Speed Control f. Safety Interlocks g. Gearbox 4. Disassembly Instructions a. Head Assembly b. Base and Induction Assembly c. -
Page 4: Safety Information
Safety Information This manual is NOT intended as a comprehensive repair guide to the appliance. It is intended for use by suitably qualified persons with relevant technical competence, the applicable product knowledge and suitable tools and test equipment Servicing and repair of electrical appliances must be undertaken with the appliance disconnected from the electrical supply Before servicing the appliance must be checked for earth continuity and Insulation resistance to establish if any pre-existing fault condition exists. - Page 5 Best practice safety precautions must be taken. Kenwood KM070 / KM080 series: • Product is Class 1 type • Connect the earth test probe to the planet hub nut as shown below •...
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Page 6: Specifications
Specifications Cooking Chef – Major Key Features • Powerful 1500W Planetary Mixing • 1100W Induction Cooking System o cooks directly in the mixing bowl • Large 6.7L bowl capacity o with market leading 3L cooking and mixing capacity • Accurate temperature setting from 20°C to 140°C •... -
Page 7: Features And Operation
Features & Operation Induction Cooking Induction cooking is an advanced cooking method that employs the principles of electromagnetic induction. When an electric current is passed through a copper coil in the induction cooking area it creates an electro-magnetic field. When the COOKING CHEF bowl is locked into position the circuit is completed by a special layer of stainless steel in the bowl base. -
Page 8: Display
Features & Operation Display Display The LCD display can be toggled to display either the timer or the temperature. The timer It shows either minutes/seconds or hours/minutes. The temperature is displayed in °C. This display also shows error codes indicating interlock errors and technical errors. -
Page 9: Temperature Measurement
Features & Operation Temperature Measurement Temperature measurement The heat function is only available whilst mixing. During heating the temperature LED will pulse on and off. The LED will remain on while the temperature is +/- 5°C of the required setting. When heating water to a temperature of 100°C, the accuracy is +/- 5°C. -
Page 10: The Bowl
Features & Operation The Bowl Bowl Size Maintaining the large 6.7L fill capacity of the The total capacity of the bowl is 6.7L. The existing Major bowl, our COOKING CHEF maximum heating capacity is 3L and bowl takes things a step further. It is a is marked inside the bowl. -
Page 11: Speed Control
Features & Operation Speed Control Stirring Speeds The stir settings are suited to cooking when using the high temperature flexible beater or the stirring tool. They will ensure that food is gently mixed during cooking for even heat distribution. Stir 1 – constant very slow speed mix around 22rpm Stir 2 –... -
Page 12: Safety Interlocks
Features & Operation Safety Interlocks Five Interlocks are fitted to this machine for safety. If an interlock is activated, particular functions will not work if selected. If an interlock is activated and a function is selected which is not available, a warning sound and error message will alert the user (for example, ‘E:01’). -
Page 13: Gearbox
Features & Operation Gearbox Composite gears reduce the noise of the gearbox Composite Gears Antivibration mounts help eliminate noise and vibrations. Antivibration The motor is mounted direct to the gearbox providing a one piece power unit. Mounts The complete power unit is rubber mounted Ring Gear to reduce noise and vibration. -
Page 14: Disassembly Instructions
Disassembly Instructions Head Assembly 3. Remove the three indicated T15 screws from 1. Remove the medium/high speed outlet covers from the top of the machine, and the top of the top cover, and the two from underneath, to allow the top cover to be the slow speed outlet cover from the front of the machine. - Page 15 Disassembly Instructions 5. When removing the top cover, you need to 8. IMPORTANT - The undo the connection to the interlocks gearbox must contained within the top cover. earthed to the body, where circled. Between the rear of the gearbox and the body casting is a metal spacer (arrowed).
- Page 16 Disassembly Instructions 10. The Motor is secured by three screws During reassembly, ensure all three motor bosses are fully located within the gearbox casting assembly before fully securing. When reassembled, run the motor and check that the motor cooling fan is not rubbing due to incorrect fixing of the motor and that the drive belt is not rubbing against the wiring loom.
- Page 17 Disassembly Instructions 13. Lower gearbox cover in situ, showing the correct position of the heatguard interlock.
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Page 18: Base And Induction Assembly
Disassembly Instructions Base and Induction Assembly 14. The correct alignment of the two NTCs 16. The base moulding and induction assembly through the high temperature seat pad. can be removed after disconnecting the three power connections as shown. 17. Also disconnect the red and white wires 15. - Page 19 Disassembly Instructions 18. Only remove the cable tie holding the two 20. To remove the induction PCB cover, undo cables to the induction PCB cover if necessary, the six indicated T15 screws. before lifting the whole base moulding / induction assembly free. Please note that a cable tie must be reapplied prior to reassembly/re-fixing induction...
- Page 20 Disassembly Instructions 22. The induction PCB assembly rests on four 24. The underside of the machine, with base pegs on the base moulding, and can be lifted moulding and induction assembly removed, straight up and off the base moulding. showing the induction coil and inside the pedestal.
- Page 21 Disassembly Instructions 26. To remove the induction coil from the support casting, remove the three indicated screws. The NTCs can be removed from the induction coil by first releasing the two circled screws. This releases the housing holding the NTCs in place, and they can then be removed by pushing through the top side of the induction coil.
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Page 22: Pedestal Assembly
Disassembly Instructions Pedestal Assembly 30. The reverse side of the speed control knob, showing the lugs. 28. Correct alignment of the speed (lower) and temperature (upper) control knobs. 31. Wiring inside the pedestal. 29. To remove the speed control knob, gently prise it from underneath. - Page 23 Disassembly Instructions 32. Inside the pedestal after all wiring removed, 34. Undo the two indicated screws on the except the two cables coming from the body pedestal to release the control PCB from the section. The power PCB (with the yellow casing.
- Page 24 Disassembly Instructions 36. To release the headlift mechanism, you first 38. View of the hinge pin and headlift spring need to remove the circlip (circled) on the head correctly located. lift lever. Next, release the headlift spring from latchplate. The headlift lever can then be pulled out of the pedestal casting.
- Page 25 Disassembly Instructions 40. To remove the body cover, undo the three 42. The motor can now be lifted out. Take note indicated screws. The body cover and insert can of the positions of any cable ties you may have then be lifted out. to cut, as these should be replaced on reassembly 43.
- Page 26 Disassembly Instructions 44. Gently prise off the temperature control 46. The LCD PCB module complete. knob from underneath. Again, the spatula is the ideal tool for this. The wavy washer from under the knob should be loose. Be aware this may have a small amount of grease on it.
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Page 27: Troubleshooting
Troubleshooting Error codes Error Message Description Solution The head of the machine is in the raised Close the head. Turn the speed control to the position. When the head is lifted, a ‘O’ position and then select the desired safety sensor disables the motor and speed. - Page 28 Troubleshooting Error Message Description Solution The slow speed outlet and high Ensure that all covers are fitted correctly. speed/medium speed outlet covers are Turn the speed control to ‘O’ and then select not fitted when heating is switched ON. the desired speed. These covers are fitted with safety If E:04 is displayed when the covers are sensors.
- Page 29 Troubleshooting E:06 Error message After turning the heating ‘On’, note the time taken to display E:06 on the LCD display. This will assist in diagnosing the cause of the problem. Please note that there must be full power heating, and both the blue lights should be flashing.
- Page 30 Troubleshooting Table A Continued Fault Time until E:06 Reason(s) for failure Solution type (typical / approx.) • Check coil connector. • Measure the resistance of the coil. Measured Coil connector or Type value should read 60mΩ, +/- 5% 60 – 90 seconds damaged induction coil or induction PCB fault •...
- Page 31 Troubleshooting Bowl Temperature Sensors Problems with the Bowl Temperature Sensors can cause the following problems:- • E:09 message on the LCD. • Poor temperature control. Procedure for checking the Bowl Temperature Sensor (NTC) Resistances See the Error Message Table (E:09 above) before following this procedure. Disconnect the PCB connector and measure the resistance of both of the NTCs.
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Page 32: Diagnostic Mode
Troubleshooting Diagnostics Mode To start the diagnostics mode, simultaneously press the keys highlighted during the powering up of the machine. Press Temp/Time button can view diagnostic screen. When in diagnostic mode, press Temp/time button to scroll through the diagnostic screens. Note some of the screens are redundant development screens and are not relevant to servicing. -
Page 33: Speed Calibration
Troubleshooting Speed Calibration Procedure This procedure must be followed when replacing KW712926 – Control PCB Assembly. The machine to be tested must have all parts (bowl, heatguard, slow speed outlet cover, medium/high speed outlets cover) in place and the temperature and speed control knobs must be set to ‘0’. - Page 34 Troubleshooting Speed Calibration Procedure Continued “c - : 1“ is displayed on the LCD screen. Turn the speed control knob to 1. Press the ‘FOLD’ button to progress to the next step. “c - : 2“ is displayed on the LCD screen. Turn the speed control knob to 2.
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Page 35: Temperature Calibration
Troubleshooting Temperature Calibration Procedure – Deg C. This procedure must be followed when replacing KW712934 - LCD PCB Assembly. The machine to be tested must have all parts (bowl, heatguard, slow speed outlet cover, medium/high speed outlets cover) in place and the temperature and speed control knobs must be set to ‘0’.To start the temperature calibration mode, simultaneously press the keys highlighted during the powering up of the machine. - Page 36 Troubleshooting Temperature Calibration – Deg C. Continued “c110 °C” is displayed on the LCD screen. Turn the temperature control knob to 110°C and press the ‘FOLD’ button. “c120 °C” is displayed on the LCD screen. Turn the temperature control knob to 120°C and press the ‘FOLD’ button. “c140 °C”...
- Page 37 Troubleshooting Temperature Calibration Deg F. Continued “c 150 °F” is displayed on the LCD screen. Turn the temperature control knob to 150°F and press the ‘FOLD’ button. “c 170 °F” is displayed on the LCD screen. Turn the temperature control knob to 170°F and press the ‘FOLD’ button. “c 190 °F”...
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Page 38: Interlock Test Procedure
Troubleshooting Interlock Self Test Procedure This procedure must be carried out after every time the machine has been examined or repaired internally. You must however follow the speed or temperature calibrations first, if needed, before this procedure The machine to be tested must have all parts (bowl, heatguard, slow speed outlet cover, medium/high speed outlets cover) in place and the temperature and speed control knobs must be set to ‘0’. - Page 39 Troubleshooting Interlock Self Test Procedure continued Press the ‘FOLD’ button to go to the next test. “P4: - -“ is displayed on the LCD screen. Remove the medium/high speed outlets cover. “P4: 0“ is displayed on the LCD screen. Replace the medium/high speed outlets cover. “P4: 1“ is displayed on the LCD screen.
- Page 40 Troubleshooting Interlocks and Additional Protection Features...
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Page 41: Circuit Diagrams
Circuit Diagrams KM070 / KM080 – All except US. - Page 42 Circuit Diagrams KM080 – US Version...
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Page 43: Technical Information
Technical Information Change to Body, Cover and Insert A design change has been made to the body casting for the KM080 Cooking Chef. This change allows for increased airflow which in turn allows for improved ventilation/cooling of the motor. The change was primarily designed for, and to work with the low-voltage versions of the KM080 Cooking Chef, and has been implemented into the following KM080 variants: 0WKM080010 - US version 0WKM080011 - Canada version... -
Page 44: A957/A - Ice Cream Maker Attachment
Technical Information Old Part Number New Part Numbers Part Description (early KM080 HV and KM070 (KM080 LV and all models from series) 12K32) KW712897 KW714719 Body Cover Insert A957/A – Ice Cream Maker Attachment ( Chef Major) The A957 Ice Cream maker attachment has been superseded to the AT957A. -
Page 45: Ankarsrum Motor Design Change - 230V
Technical Information The old version of the plastic major bowl, where on the underside of the bowl the centre protrudes. This bowl was used on the A957 Ice Cream maker attachment. On the KM070, this protuberance does not fit over the NTCs in the centre of the induction coil in the pedestal, which is why the A957 is not compatible with the KM070. -
Page 46: Km070 Heat Guard Modification
Technical Information KM070 Heat guard modification The heat guard has been modified to improve its fit against the top cover. Models affected: KM070 Modified parts: KW713359 and KW713360 Details of change: Previous heat guard seal KW712880 is not interchangeable with the new modified heat guard KW713359 Note the highlighted spring retainer clip added to the modified heat guard to improve grip. -
Page 47: Stir Tool Design Changes
Technical Information Stir Tool Design Changes 1. Profile reduction on sweeper – introduced to eliminate contact with the bowl. Contact only occurs with the sweeper in the position as shown in Photo 1. Date code of introduction to be advised. Please note, this has never caused any damage to the tool, bowl or the machine. -
Page 48: Beater Shaft Design Change
Technical Information Beater Shaft Design Change The introduction of more powerful motors and stronger gearboxes on Kenwood kitchen machines (Chef and Major) necessitated a change to the tool shaft and gearbox planet hub, from the original circlip design to a new bayonet type. Cooking Chefs have all been produced from the outset with the bayonet design planet hub. - Page 49 Technical Information Consequently there are in the market:- 1) Two types of planet hub (a circlip type and a bayonet type) 2) Three types of beater shafts (the original circlip type, the new circlip type and the new bayonet type). This applies to both Chef and Major machines.