I have a number of these nice little volumetric pumps (the GW, that is) that come up with the dreaded (by me, at least)
Bad Set error after about 15 seconds of pumping. Does anyone have any
nous regarding this?
Does anybody have details about what is actually going on at this stage? The pump is presumably testing the compliance of the giving set, or some such thing, before either rejecting it as a "Bad Set" or accepting it for delivery to continue. The manual claims that this also guards against simple reversal of the direction of the set (that is, being installed the wrong way around)!
It looks to me like the pump starts off pulling in reverse for a few seconds, and then proceeds in the pumping direction. It is a few seconds after this that (on the faulty pumps) the "Bad Set" error makes itself known, and pumping action halts. I am assuming that some sort of cleverness involving the pressure sensor is involved.
I believe I have got the pressure cal accepted, and the "null pressure" is correctly adjusted via R2 on the Pressure Sensor Board. So it looks like replacement of the Pressure Sensor Board(s) is on the cards. Or am I missing something here (something not mentioned in the manual, perhaps)? Like an "undocumented" code that needs to be accessed, and tweaked, for instance?
