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Technical Information 

 

 

1

 

MasterChef Collection Cooktops

 

 

1.0   

Construction and Design 

 
1.1   

Summary of MasterChef Cooktops  

 
 

 

        Table 1-1:

 Summary of MasterChef Collection Cooktops 

 

 

 
 
 
 
 

Model 

Number 

Description of 

Cooktop 

Electrical 

Data 

 

Burners 

(Max BTU or Watts) 

 

KM342 

 

5 Burner Gas 

 

Available in Black, White & 

Stainless Steel 

120VAC 

 

-  Two 9000 BTU Burners  
-  One 12000 BTU High Speed Burner 
-  Two 15300 BTU Double Ring Superburners 

 

KM344 

 

6 Burner Gas 

 

Available in Black, White & 

Stainless Steel

 

120VAC 

 

-  Two 90000 BTU Burners 
-  Two 12000 BTU High Speed Burners 
-  One 15300 Double Ring Superburner 
-  One 16500 Double Ring Superburner 

 

KM421 

 

 

Electric - 24” Four 

Burner w/  

Black Ceran Finish 

 

240VAC 

(30 Amp) 

-  Two 1200 Watt Burners 
-  Two 1800 Watt Burners

  

KM424 

 

 

Electric - 30” Four 

Burner / Seven 

Cooking Zones w/  

Black Ceran Finish 

 

240VAC 

(40 Amp) 

-  One 1200 Watt Burner 
-  One Variable 1800 Watt Burner 
-  One Variable 2400 Watt Burner 
-  One Variable 2400 Watt Oval Burner 

 

KM427 

 

 

Electric - 36” Five 

Burner / Eight 

Cooking Zones w/ 

Black Ceran Finish

 

 

240VAC 

(50 Amp) 

-  Two 1200 Watt Burners 
-  One Variable 1800 Watt Burner 
-  One Variable 2500 Watt Square Burner 
-  One Variable 2500 Watt Burner

 

KM452 

 

 

Electric - 42” Six 

Burner / Nine 

Cooking Zones w/ 

Black Ceran Finish 

 

240VAC 

(50 Amp) 

 
- Front Left : 1100/2500 Watts (variable) 

- Rear Left and Right: 1200 Watts / each  
- Rear Middle: 1800 Watts / each, 4400    
  with extended area on 
- Front Right: 900/2400 Watts (variable) 
 

Summary of Contents for KM427

Page 1: ... 2004 Miele TECHNICAL INFORMATION MasterChef Collection Cooktops ...

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Page 3: ...MISSION and OPERATION 3 1 KM342 and KM344 General Operating Information 17 3 1 1 Fast Ignition System 17 3 1 2 Operating aBurner 17 3 2 KM421 KM424 and KM 427 General Operating Information 18 3 2 1 Operating a Single Burner 18 3 2 2 Operating a Variable Extended Burner 18 3 3 KM452 General Operating Information 19 3 3 1 Overview of Controls 19 3 3 2 Touch Controls 19 3 3 3 Turning On a Burner 20 3...

Page 4: ... Regulator 26 4 2 2 Temperature Monitor 26 4 2 3 Operational Indicator 26 4 2 4 Residual Heat Indicators 26 4 2 5 Heater Elements 26 4 3 Gas Cooktops 27 4 3 1 Operation Overview of Ignition Re Ignition System 27 4 3 2 Burner Gas Regulators 30 4 3 3 Connecting to LP Gas 31 4 3 4 Burner Assemblies 31 4 3 4 1 Normal and Fast Burner Assembly 31 4 3 4 2 Super Burner Assembly 31 5 0 SERVICE and MAINTENA...

Page 5: ...tallation Manual Typical Cover 15 3 1 KM452 Controls 19 4 1 Ignition Re Ignition System 28 4 2 Re Ignition Control System 29 4 3 KM342 and KM344 Normal High Speed Burner Components 30 4 4 KM342 and KM344 Wok Burner Components 31 5 1 Removing the Cooktop for Service 34 MasterChef Cooktop Collection List of Tables 1 1 Summary of MasterChef Collection Cooktops 1 4 1 Safety Cut Out Setting and Operati...

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Page 7: ...e Ring Superburner KM421 Electric 24 Four Burner w Black Ceran Finish 240VAC 30 Amp Two 1200 Watt Burners Two 1800 Watt Burners KM424 Electric 30 Four Burner Seven Cooking Zones w Black Ceran Finish 240VAC 40 Amp One 1200 Watt Burner One Variable 1800 Watt Burner One Variable 2400 Watt Burner One Variable 2400 Watt Oval Burner KM427 Electric 36 Five Burner Eight Cooking Zones w Black Ceran Finish ...

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Page 9: ...mation 3 MasterChef Collection Cooktops 1 2 Appliance Overview Products are listed in numeric order by model number 1 2 1 KM342 Overview 1 Super Burner 2 Normal Burner 3 Fast Burner 4 Grates Figure 1 1 KM342 Overview ...

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Page 11: ...er 2 Normal Burner 3 Fast Burner 4 Grates 5 Large Wok Burner 6 Control Knob Left rear burner 7 Control Knob Center rear burner 8 Control Knob Right rear burner 9 Control Knob Front left burner 10 Control Knob Front center burner 11 Control Knob Front right burner Figure 1 2 KM344 Overview ...

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Page 13: ...asterChef Collection Cooktops 1 2 3 KM421 Overview 1 4 Single Burners 5 Control Knob Rear Left 6 Control Knob Rear Right 7 Control Knob Front Left 8 Control Knob Front Right 9 Residual Heat Indicators Figure 1 3 KM421 Overview ...

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Page 15: ...l Information 9 MasterChef Collection Cooktops 1 2 4 KM424 Overview 1 Single Burner 2 Extended Burner 3 4 Variable Burners 5 Indicator Lights 6 Control Knobs 7 Residual Heat Indicators Figure 1 4 KM424 Overview ...

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Page 17: ...Information 11 MasterChef Collection Cooktops 1 2 5 KM427 Overview 1 3 Single Burners 2 Extended Burner 4 5 Variable Burners 6 Indicator Lights 7 Residual Heat Indicators 8 Control Knobs Figure 1 5 KM427 Overview ...

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Page 19: ...Technical Information 13 MasterChef Collection Cooktops 1 2 6 KM452 Overview 1 6 Variable Burners 2 5 Single Burners 3 4 Extended burner Area 7 Touch Controls Figure 1 6 KM452 Overview ...

Page 20: ...n 14 MasterChef Collection Cooktops 1 2 6 1 KM452 Touchpad Controls 1 Timer Control front left burner 2 Main On Off Control 3 Safety Lock 4 Safety Lock Indicator 5 Timer Control front right burner Figure 1 7 KM452 Controls ...

Page 21: ...mation 15 MasterChef Collection Cooktops 2 0 Installation For information on appliance information refer to the Miele Installation Manual and the product specific Operating Manual Figure 2 1 Miele Installation Manual ...

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Page 23: ... shut off 3 1 2 Operating a Burner To Light a Burner Press down and turn the corresponding control knob counter clockwise to the largest flame symbol and release the knob The igniter will click and ignite the gas The ignition process takes about 8 10 seconds The flame should light within 4 seconds The Fast Ignition System will click a few seconds after the flame is lit to ensure the safety system ...

Page 24: ... clockwise or counterclockwise to 0 3 2 2 Operating a Variable Extended Burner If a burner has the symbol next to the control knob you can switch on an additional outer or extended heating circle To Turn On a Burner Push down and turn the control knob Clockwise to the desired setting turns on one heating circle Counter clockwise to the desired setting to turn on both heating circles Note If both h...

Page 25: ...fety Lock Indicator 5 Timer Control Figure 3 1 KM452 Controls 3 3 2 Touch Controls The KM452 uses electronic touch controls activated by a finger There is a separate touch control for each burner A tone sounds to indicate that contact has been made with a control Keep the control area clean Note To prevent damage to the electronics never place hot pans on the control panel ...

Page 26: ... is touched at a time or the cooktop may not respond When the cooktop is turned on the auto heat option can be selected by performing the following To cook using auto heat Press the control To Cook without auto heat Press the control 3 3 4 Auto Heat Setting When auto heat is activated the selected burner turns on automatically to the highest setting to bring the burner up to temperature The burner...

Page 27: ...uch Controls Manual Reset 1 Shut off power to the appliance i e turn circuit breaker off 2 Wait at least one 1 minute 3 Restore the power to the appliance 3 3 7 Residual heat indicator After the burners or the cooktop have been turned off the residual heat of the burners which may still be hot are indicated by an in the display The in the display goes out when the burners are safe to touch Service...

Page 28: ...the burners and for the timer cannot be altered The burners and cooktop can still be turned off but once turned off cannot be turned on again To activate the safety lock Touch the until the indicator lights The indicator will go out after a short period of time If you touch the control for the safety lock or try to select a setting the light will come on again to show that the child safety lock ha...

Page 29: ...without putting a pan on it Heating an empty pan Pan pot is not sitting evenly on the burner The pan is not conducting heat properly If the heating elements cycle on and off even at the highest setting the overheat protection has been activated 4 1 2 KM452 Safety Cut Out Controls are Covered The cooktop will turn off automatically if any of the touch controls are covered for more than 10 seconds f...

Page 30: ...a safety cut out feature In the event one of the burners is left on for an unusually long period of time without any control adjustments the cooktop automatically turns off and illuminates the residual heat indicator Refer to table 4 1 for specific operating durations Table 4 1 Safety Cut Out Setting and Operating Hours ...

Page 31: ... power failure in response to changing light conditions see note below Note If the cooktop be installed in an environment that is brightly lit or completely shaded the touch controls may not function properly 4 1 4 2 Manual Reset 1 Shut off power to the appliance i e turn circuit breaker off 2 Wait at least one 1 minute 3 Restore the power to the appliance ...

Page 32: ...Heater Element 4 2 3 Operational Indicator The Operational Indicator illuminates when the appliance is switched on for usage 4 2 4 Residual Heat Indicator s The Residual Heat Indicator illuminates when the appliance reaches a specific temperature alerting the user the cooktop surface is hot Even if the appliance is switched off the indicator s remains illuminated until the appliance cools down 4 2...

Page 33: ...it the Thermocouple Item 6 is heated and produces approximately 6 8 millivolts The power from the Thermocouple Item 6 is monitored by the Electronic Item 7 and keeps the Thermocouple Solenoid Item 3 open permitting gas flow to the Burner Item 5 Should the Burner Item 5 be extinguished example by wind the Thermocouple Item 6 begins to cool down and the voltage being produced drops The Electronic It...

Page 34: ...erChef Collection Cooktops 1 Ignition Switch 2 Mechanical Gas Regulator 3 Thermocouple Solenoid 4 Ignition Electrode 5 Burner Assembly 6 Thermocouple 7 Electronic 8 Transformer Control Voltage Figure 4 1 Ignition Re Ignition System ...

Page 35: ...Technical Information 29 MasterChef Collection Cooktops Figure 4 2 Re Ignition Control System Data ...

Page 36: ...m see 4 3 1 Even if the user control is placed into the fully open position no gas can flow from the Regulator unless the Thermocouple Solenoid is energized in the open position 4 3 3 Connecting to LP Gas The KM342 and KM344 is ordered specific for the type of gas supply being used field conversion is not possible 4 3 4 Burner Assemblies 4 3 4 1 Normal and Fast Burner Assembly 1 Burner Cap 2 Burne...

Page 37: ...ical Information 31 MasterChef Collection Cooktops 4 3 4 2 Super Burner Assembly 1 Burner Cap 2 Upper Burner Head 3 Burner Ring 4 Lower Burner Head 5 Burner Base Figure 4 4 KM342 KM344 Wok Burner Components ...

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Page 39: ... disconnected from the main power supply i e unplugged circuit breaker shut off before any service work is performed The gas supply to the appliance must be shut off before performing any service on the KM342 and KM344 After service all gas connections should be checked to ensure they do not leak Repair as necessary before any operation Where applicable by law gas connections must be performed by ...

Page 40: ...rical supply to the appliance i e shut off the circuit breaker Turn off the gas supply if applicable 2 Disconnect the electrical supply Disconnect the gas if applicable 3 Access the underside of the appliance 4 Press inward on the retaining clips 1 while pushing the appliance upward 2 Note During re installation all gas connections must be leaked tested before reconnecting the electric supply Figu...

Page 41: ...rty burner head parts Uneven Flickering Flame Dirty burner head parts parts not seated correctly Gas pressure not in specification Faulty Gas Regulator Unusual Color Flames Dirty burner head parts Contaminated Gas Supply Flame not visible around the entire burner or uneven flames Parts not seated correctly Dirty Burner Components carefully inspect all holes in burner ring for contamination i e foo...

Page 42: ... any of the touch controls are covered for more than 10 seconds for example by finger contact food boiling over or by an object such as an oven mitt or towel When the cooktop turns itself off a tone will sound every 30 seconds for a maximum of 10 minutes and an F will flash in the display of the touch control which was covered 4 1 2 KM452 Cannot be operated After intensive cleaning the appliance c...

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