|The Doserless Rancilio "Rocky" coffee grinder has
- The main power switch is on the bottom right
side of the chassis. It does nothing but act as a master power switch. It must
be On before the momentary contact push switch will work.
- The momentary rocker switch is on the lower
left front of the grinder. This must be continuously held in - with the main
power switch On - in order to activate the grinder's motor.
In electrical terms these two Single Pole, Single
Throw (SPST) switches are wired in series. Both must be switched On in order to
grind coffee. The downside of this connection is that, while it is not a large
imposition to hold in the front switch in order to fill an espresso machine's portafilter, it is far from ideal when grinding larger quantities such as that
required for a pot of drip coffee, a vacuum pot, or a French press.
It is quite easy to rewire these two switches so
that they are connected in parallel rather than in series. With this
modification either switch will activate the grinder. Now the front push switch
activates the motor when pushed with the main switch in the Off position. The
main switch will activate the motor continuously while in its On position.
- 3 standard crimp terminal connectors available
at any hardware store
- 1 - 6" length of stranded 18 gauge black wire
- Phillips Head screwdriver
- Crimping tool
- Wire cutter
- Wire stripper
Full details and photographs are included in the
following PDF attachment: