Thank you to those that replied to my query.
Peter Stow stepped in and saved my bacon (yet again), pointing to the
24V/5V DC power supply which feeds the power distribution board.
Without power, the board couldn't respond to the pump switch. It has
decided not to function....
At 01:37 PM 14/08/2007, you wrote:
>The switches can be finicky. I've had that problem both in trying
>to turn the pumps off as well as turn them on. You just have to
>keep playing with them--maybe try "rocking" them instead of just
>pushing them, or push them up as well as in (or down as well as
>in). Sorry I don't have a sure-fire way.
>Paul Eby wrote:
>>I'm looking for assistance with a problem after a power outage: the
>>pumps on our Delta Plus XL will not turn back on.
>>When I toggle the source pump button, nothing happens (LED light
>>does not come on, no pump activity). The instrument does indeed
>>have power (various fans and electronics are humming), and I have
>>reset the breakers on the back.
>>The roughing pump itself is fine - it works fine when plugged into
>>a hot socket. I've also gone through the system looking for blown
>>fuses and loose cables. I've also left it unplugged for a few hours
>>hoping for a miraculous reset of some sort. No luck.
>>[log in to unmask]
>>Biogeochemistry Lab (E-Hut, room 102)
>>School of Earth and Ocean Science
>>University of Victoria
>>PO Box 3055