KM 34xx Gas Cooktops Technical Information Table of Contents Warning and Safety Instructions ............4 1 General Information ..................4 2 Touch Current Measurement ................4 3 Gas ........................5 Modification History ................. 5 Technical Data ..................6 ...
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KM 34xx Gas Cooktops Technical Information List of Figures Figure D-1: KM 34xx Components (KM 346x Shown) ............8 Figure 010-1: Wok Burner Components ................14 Figure 010-2: Normal/Fast Burner Components ..............14 Figure 010-3: Main Jet on Normal/Fast Burner ..............15 Figure 010-4: Main Jet - Outer Flame Ring (Wok Burner) ............
KM 34xx Gas Cooktops Technical Information Warning and Safety Instructions General Information Service and repair work should only be carried out by a suitably qualified electrician (with specialist training, knowledge and experience, and recent related work experience) in accordance with all appropriate local and national safety regulations.
KM 34xx Gas Cooktops Technical Information Danger! These machines should not be installed or operated in any area where there is a risk of explosion. Before starting any service work, disconnect the gas safety socket (if it has an additional tap, this must also be closed) or close the tap on a fixed connection.
KM 34xx Gas Cooktops Technical Information Technical Data Models KM 346x G KM 347x G KM 348x G Appliance dimensions Width 30.0” 36.0” 42.5” Depth 21.3” 21.3” 21.3” Cutout dimensions Width 28.3” 35.0” 41.5” Depth 20.4” 20.4” 20.4” Built-in height with gas connection 3.3”...
KM 34xx Gas Cooktops Technical Information Jet diameters, wok burners Diameter Main jet - inner Main jet - outer Gas type Simmer adjustment jet flame ring flame ring 1.90mm (KM 346x and KM 347x) Natural gas 0.60mm 0.88mm /0.40mm 1.95mm (KM 348x) 1.09mm (KM 346x and KM 347x) Liquid gas...
KM 34xx Gas Cooktops Technical Information Technical Data (mm) Gap X for air setting Gas type Outer flame ring Inner flame ring Natural gas Liquid gas Table 010-1: Air Setting for Main Jets on Wok Burners Function Rapid Ignition With rapid ignition, it is no longer necessary to hold the switch knob pressed in at the largest flame setting until the thermocouple is sufficiently heated.
KM 34xx Gas Cooktops Technical Information Fault Repair Flame Does Not Ignite Cause: No ignition spark. Remedy: 1. Check the ignition electrode. Replace it, if necessary; see Section 010-4.6. 2. Check the transformer. Replace it, if necessary; see Section 020-4.6. Burners Do Not Light Cause: Ignition electrode is dirty or defective.
KM 34xx Gas Cooktops Technical Information Cause: Burner cap is skewed. Burner cap must sit evenly on the burner head. Remedy: Check for distortions in the burner cap. Replace the burner cap, if necessary. Cause: Thermocouple is dirty. Remedy: Clean the thermocouple. Cause: Thermocouple is crooked.
KM 34xx Gas Cooktops Technical Information Remedy: Check the thermocouple wires. Replace the thermocouple; see Section 010-4.5. Cause: Thermocouple is crooked. Remedy: Bend the thermocouple using a tubular socket wrench so that it is perpendicular to the base. Note: After service work, operate all burners for at least 5 minutes in order to ensure proper function.
KM 34xx Gas Cooktops Technical Information Figure 010-1: Wok Burner Components Figure 010-2: Normal/Fast Burner Components Gas Type (Jet) Conversion Note: Always replace the main and simmer adjustment jets together. 1. Disconnect the cooktop from the power supply. 2. Close the gas tap. 3.
KM 34xx Gas Cooktops Technical Information located on the underside of the appliance. 6. Leakage Test, Section 020-4.8. 7. Treat the jets with locking compound to prevent them from loosening. 8. Burning Properties Test, Section 010-4.7. 9. Automatic Re-Ignition Test, Section 010-4.9. Main Jet Replacement Note: If the cooktop is being converted to operate with a different type of gas,...
KM 34xx Gas Cooktops Technical Information Figure 010-4: Main Jet - Outer Flame Ring (Wok Burner) 4. Unscrew the locknut (Figure 010-5, Item 1) with an 8-millimeter wrench, while holding a 12-millimeter wrench on the jet connection piece (Figure 010-5, Item 2).
KM 34xx Gas Cooktops Technical Information 13. Burning Properties Test, Section 010-4.7. 14. Automatic Re-Ignition Test, Section 010-4.9. Thermocouple (Flame-Monitoring Electrode) Removal 4.5.1 Normal/Fast Burners 1. Disconnect the cooktop from the power supply. 2. Close the gas tap. 3. Remove the cooktop surface, Section 010-4.1. 4.
KM 34xx Gas Cooktops Technical Information Disconnect the thermocouple from the bottom casing and from the electronic. Figure 010-7: Thermocouple Removal, Wok Burners Note: Carry out the following after reassembly: Leakage Test, Section 020-4.8, Burning Properties Test, Section 010-4.7, and Automatic Re-Ignition Test, Section 010-4.9.
KM 34xx Gas Cooktops Technical Information Note: Carry out the following after reassembly: Leakage Test, Section 020-4.8, Burning Properties Test, Section 010-4.7, and Automatic Re-Ignition Test, Section 010-4.9. Burning Properties Test 4.7.1 Normal/Fast Burners Note: Check the burning properties of every burner. 1.
KM 34xx Gas Cooktops Technical Information 4. The gas flame must burn with a clear, distinct core. 5. Rapidly turn the switch knob from the highest setting (Figure 010-17, Items 1 and 3) to the low flame setting (Figure 010-17, Items 2 and 4). 1 High setting - Outer flame ring 2 Low setting - Outer flame ring 3 High setting - Inner flame ring...
KM 34xx Gas Cooktops Technical Information Service Switch Removal 1. Disconnect the cooktop from the power supply. 2. Close the gas tap. 3. Cooktop Surface Removal, Section 010-4.1. 4. Remove the appropriate switch from the burner tap (lift it off its shaft to remove), cutting cable ties as necessary.
KM 34xx Gas Cooktops Technical Information Solenoid Removal 1. Disconnect the cooktop from the power supply. 2. Close the gas tap. 3. Cooktop Surface Removal, Section 010-4.1. 4. Remove the appropriate switch (Section 020-4.1). 5. Unscrew the burner pipe locknut (Figure 020-2, Item 1) with an 8-millimeter wrench.
KM 34xx Gas Cooktops Technical Information Transformer Removal 1. Disconnect the cooktop from the power supply. 2. Close the gas tap. 3. Cooktop Surface Removal, Section 010-4.1. 4. Remove the transformer retaining screws (T20); see Figure 020-4, Item 1. 5. Disconnect all connections from the transformer; see Figure 020-4, Item 2. 6.
KM 34xx Gas Cooktops Technical Information Leakage Test Note: Whenever any gas-carrying part is removed or installed, all gas-carrying parts must be checked for leaks. 1. Cooktop Surface Removal, Section 010-4.1. 2. Disconnect the ignition electrode from the transformer. 3. Connect the cooktop to the power supply. 4.