| 摘要 |
It comprises insulating vertical slideways (6) integral with the side walls (5c and 5d) of a hood (5), in which slideways there slides a metal panel (7) which on one of its faces accommodates the electric motor (3) while on the other face there is provided an insulating bracket (9) integral with a threaded rod (9a) which passes through the bottom (5b) of the hood (5) to interact with a spring (9c) and a nut (9b) to adjust the tension of the belt (4c). <IMAGE>
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