Baxter wrote:

I have checked seals on lids of chemical bottles, smeared thick
Silicone grease around the top of the o-rings on the bottle, replaced
the red seal on each of the tank lids, but still the problem recurs.

This could be a problem with the electronics, the air pump, or the air
distributor that switches the air supply over to the next bottle.

If the problem occurs, do you still hear the pump running? If there is
silence at the moment when you should be hearing the usual purring of
the pump, I'd check the relay that controls it.

Ralf

--
Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany
private homepage: http://www.fotoralf.de
manual cameras and photo galleries - updated Jan. 10, 2005
Contarex - Kiev 60 - Horizon 202 - P6 mount lenses