: Keep an eye on the furnace's operation. Modern devices like the Programat P90 often come with a display showing the current status, temperature, and any errors.
Switch the main power on (usually located at the rear or side). Wait for the furnace to perform its self-test.
: Wipe the black rubber O-ring under the furnace head with a lint-free cloth to prevent leaks.
: Keep an eye on the furnace's operation. Modern devices like the Programat P90 often come with a display showing the current status, temperature, and any errors.
Switch the main power on (usually located at the rear or side). Wait for the furnace to perform its self-test.
: Wipe the black rubber O-ring under the furnace head with a lint-free cloth to prevent leaks. Ivoclar Programat P90 Manual
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