The surface temperature, for safety reasons, is limited to appoximately 203ºF / 95 °C. The device automatically starts again after a cooling down to under 113º F, or 45°C.
According to the manufacturer:
The limiter switch off at 140°C. Half of the limiters are mounted in the upper third, half in the lower third, when panel is mounted horizontally.
LAVA
number of Limiters
250=
6
500=
6
750=
8
1000=
10