Do you have a schematic? Do you know how to read one? The MR and MF contactors have piggy back contacts that keep them lactched (ON) even when you release the switch. The way oil level switch does the same thing.Then they drop out when either the 24 VDC to them is broken (overtravel, emergency stop, overload, etc) or the ground is interrupted by the EAF. Perhaps one of these switches is dirty or the EAF is getting a bad signal.
George
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)