| 摘要 |
<p>A ceiling mounted air filter system has each filter mat (2) fitted into a lower support frame (1) suspended from an upper support frame (4) by servo rams (3) at each corner. The servo rams are preferably pneumatic and are lowered against return spring force enabling the operator to rapidly change the filters. The filter frame suspension operates through a dead point ensuring the upper position is beyond a dead point.</p> |
