What should you do when the Operator tells you he/she has a coal stoppage, or a feeder has tripped?
If it is a coal stoppage the Operator will use the air cannon to clear the stoppage, if this doesn’t work then the Assistant will have to try to knock the coal down, There is a port hole above the feeder where you can place an air lance to try to get the coal to fall. If unable to knock the coal down, then have the Operator stop the feeder and run the primary air in the hole, You may then open the feeder door to inspect. If the feeder trips more than likely it is due to a discharge plug fault, this usually happens when the coal is wet, it could actually mean the feeder pipe below the feeder is stopped up, or that the probe has wet coal stuck to it, which is usually the case. The Operator needs to run the primary air in the hole, so that you can open the feeder door to determine if the feeder pipe is plugged or the probe just needs to be cleaned. Once the problem is solved, close the door and reset the fault on the feeder. Do Not Open The Feeder Door Until The Operator Has Run The Primary Air In The Hole. If the feeder pipe is stopped up the mill needs to be running before knocking the coal down in the feeder pipe.