MX9700345A - Control device. - Google Patents

Abstract

The present invention describe a control device to control and to check two valves for fluid, wherein each valve comprises an impelling means, which is adapted to actuate an associated control signal, and a movable valve means which is derived towards a first position, wherein flow through valve is prevented and which can be carried by displacement means to a second position, wherein fluid is capable to circulate through valve, a first switch which is actuatable by first valve displaceable means, a second switch which is actuatable by second valve displaceable means, wherein each switch can be displaced to a second position, when associated valve displaceable means takes its second position. According to the invention, both switches (20, 21) are adapted to directly influence control signal paths in both commutation positions, and are connected in a way that prevents first control signal (S1) application to first valve on its first position when first control signal (S1) application is carried out, after a predetermined period of time has been passed from second valve actuation, and to prevent second control signal (S1) application to second valve when it is on its first position, if second control signal (S2) application is carried out after a predetermined period of time has passed, subsequent to first valve actuation. Both switches (21, 21) are connected in so as to allow control signal to being applied to a respective impelling mounting when both switches simultaneously occupy their first position, or simultaneously occupy their second position.