Siemens HD2525U Use And Care Manual page 22

Operation - Cooktop
Turning the Burner off
English 20
CAUTION:
To prevent possible burns, the flame should not extend beyond the
edge of the cookware. This instruction is based on safety consider-
ations. Damage to the cookware or the appliance may also result.
Turn knob clockwise to the OFF position.
Note:
A "pop" may be heard when the burner is turned off. The "pop" may
be louder with LP gas than with natural gas. This is normal.