Dust Control/DustGuard™ Systems87Service Manual – CS7000– The A1 Main Machine Controller must receive a signal from the A2 Drive Controller via the CAN BUS thatthe machine is moving forward.• The J2-18 Output provides the negative ground to the Shaker Motor M14 under the following conditions:– If the hopper is down and the DustGuard™ system is enabled, the A1 Main Machine Controller willswitch on the Shaker Motor M14 automatically for preset duration when the sweep system is switchedoff.– If the hopper is up, the A1 Main Machine Controller must receive a signal from the A3 Operator InterfacePanel via the CAN BUS that the operator has pressed the filter shaker switch (blue LED on).Component LocationsImpeller and Filter SystemThe Impeller Assembly houses the dust controlvacuum motor and is mounted in the HopperCover. The Impeller Assembly pulls air fromthe hopper through the filter. The filtered airis exhausted through Vents in the front of theHopper Cover.The rectangular Dust Control Filter sealsagainst the Upper Hopper and is held in placeby the Filter Shaker Assembly.The electric motor in the Filter Shaker Assemblydrives two eccentric weights to vibrate or“shake” the Dust Control Filter to dislodge dustand allow it to drop down into the hopper. TwoThumb Nuts secure the Filter Shaker Assemblyand Dust Control Filter to the Upper Hopper.ImpellerAssemblyHopperCoverVent(typical)UpperHopper DustControlFilterFilterShakerAssemblyThumbNut (2)