The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 483
Suction in an electric cleaner (which means cleaning power) depends not upon the Motor but upon accurate balance between the Speed of the Fan and the Volume of Air drawn through the nozzle, or mouth. If the nozzle is either too large or too small for the size and speed of the motor, so that either…
Architecture · Building
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