1 fan during operation
(1) through the radiator when the air temperature rises, the bimetallic thermal sensor thermal deformation, forces the valve shaft, the driven plate into the open hole . Storing the driven plate between the cover and the front working chamber flows into the silicone oil between the main plate and the driven plate, the clutch is engaged, the fan speed increases. The higher the air temperature, the greater the degree of opening of the intake hole, the faster the fan speed.
(2) through the radiator when the air temperature drops, the temperature sensing bimetallic restitution device, closing the intake valve hole, under the effect of centrifugal force, silicone oil returned from the working chamber via the oil return hole oil chamber, the clutch is disengaged, the fan speed becomes very low.