I agree with Brian on sticking relay but want to caution you (if you are probing) that some Hammer machines do run line voltage to the switches. This was discussed before here:
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The older hammer machines have a schematic with 24VAC safety circuit like Felder but based on only 2 accounts it seems that the Hammer has line voltage going to switches.
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The older machines with low voltage circuit, that I have come across, have electrical cabinet like Felder. The newer Hammer machine has all electrical stuffed in a box and the 2 machines I have come across with line voltage switches (one in USA the other abroad) were of this design.
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Imran Malik
IAM Wood Creations
imran