Smeg PVA750BE Instruction Manual page 18

7.7.3
The burner caps and flame diffuser rings can be removed for easier cleaning; wash
them in hot water and non-abrasive detergent, taking care to remove all deposits, and
wait for them to dry completely.
The burner pins A must be fitted into the recesses B in the flame diffuser ring. The
holes C in the flame diffuser ring must mate with the ignition plugs and thermocouples
D on the hob.
7.7.4
For best performance, the ignition plugs and thermocouples must always be kept
thoroughly clean. Check them frequently and if necessary clean them with a wet cloth.
Remove any dry residues with a wooden toothpick or a needle.
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Instructions for the User
The flame diffuser rings
The plugs and thermocouples