Intermatic FM/1SWUZ-120U Timer 30067439-890 Industrial Durability: The hermetically sealed
Baker’s notes & crumb story
Description
Intermatic FM 1SWUZ 120U Timer 30067439 890 Industrial Durability: The hermetically sealed Industrial Durability: The hermetically sealed plug in cell prevents sensor drift caused by the harsh atmosphere inside the burner air tube Veteran techs recommend ensuring the diaphragm is lightly powdered (common baby powder works) to prevent binding against the housing during high pressure operation