Smeg ER12550NL - Manual (Page 12)

Instructions for the installer
29
6.3 Arrangement of burners on hob
BURNERS
1. Auxiliary
2. Triple
crown
3. Double crown
6.4 Lubrication of gas taps
After a while, the gas tap may become hard to turn or lock. If this
happens, it has to be cleaned inside and re-greased.
This must be done by a qualified technician.