| 摘要 |
The fan of an evaporative cooler rotates about a generally horizontal axis, and its shaft carries a "driving" wheel which engages a driven wheel on the upper end of the pump spindle, which extends vertically downwardly to the base tank. The pump is pivotally mounted to the assembly of the base tank, cabinet and fan housing, and a releasable spring extending between the pump and that assembly retains the two wheels in driving engagement. The pump can be lifted out of the cabinet by simply releasing the spring. |
