Ke hobane’ng ha u sa khone sebopi sa muffle be turned on at high temperature?

1. Opening under high temperature will be disadvantageous to the operator, so as to avoid scalding and heat radiation.

2. Ho bula tlas’a mocheso o phahameng ho tla etsa hore ho be le mapheo a thepa ea ho kenya letsoho ea holo ea sebōpi le ho khutsufatsa bophelo ba tšebeletso.

3. Opening it will cause the furnace temperature to drop rapidly and damage the heating element.

It is recommended not to open at high temperature without special experimental requirements.