De Walt grinder, linisher DW755

I have just aquired an example of a De Walt DW755 linisher-grinder. The right hand end has a white grinding wheel with a water bath. At the other end is a belt linisher. When running, the front of the grinding wheel rotates upwards, the same as another water cooled grinder I have. However, this is also the case with the linisher belt, it moves upwards, tending to lift the work from the table. Is this correct? There is no means of reversing fitted.