Alastair,
I doubt you will find a Manual as such, but they are not difficult to operate. John has pointed out the need to dress the mag chuck surface on the machine from time to time. Eclipse reckon that the main reason for loss of holding power is failure to dress the table, so the surface is not smooth. Obviously this is done with the chuck "off".
Like my old Pallas grinder, Capco is very open. While these are excellent little machines, they are also very good at throwing filth in all directions. Recommend you think ahead on this and try to provide some shielding to contain this.
The little guard at the end of the table does very little, but I have found that the biggest flat magnet available, fixed to the guard and covered with a polythene bag will catch a lot of the metallic dust, the bag is then reversed off and contains all the gunge cleanly. The ideal would be some sort of extractor system, but whilst I have thought a lot about this have yet to get around to it.
Surrounding the machine with a sort of "tent" of polythene will keep a lot of the dust in one place, likewise think about the location of the grinder. If you can back it into a corner then it's easier to box in and can have a little roof of its own.
Believe me, the muck does get everywhere. If you have other machines near it then cover them up whilst grinding.
Phil