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Hi Steve,

Mine measure 23.3 V. I use the same solenoid part number as Dave. I would
check the part between the solenoids and the 33V power supply as well as
the 33 V power supply.

andy

On Fri, Sep 13, 2019 at 11:17 AM David A. Mucciarone <[log in to unmask]>
wrote:

> ASCO PN:390NC24150
>
> They work until the plastic bits fail. I have never had the solenoid
> fail. I've been using the same part# for over 20 yrs. It is a 24VDC
> normally closed valve. I haven't ventured out to find an alternative
> that uses PEEK. I know they exist, I just use the PN above since I know
> it works.
>
> Hope this helps.
>
> Dave
>
>
>
> On 9/13/2019 9:05 AM, Steven Clemens wrote:
> > We recently replaced the solenoid pinch valve on line 2 and it does not
> open (clicks, but does not open).  We removed that one and installed
> another...same result (it clicks but does not open).  We opened and lubed
> the interior...same result (clicks but does not open).  We tired three
> versions of acid tubing with variable results (would work for a few samples
> then fail (click but not open).
> >
> > We cannot locate the Thermo schematics for the valve but assume that it
> operates on 24 volts (as indicated on the valve itself).  We measured the
> voltage on both valves (lines 1 and 2) finding 18V for each.  Note, we're
> having NO TROUBLE with the pinch valve on line 1.  It opens and closes fine
> with the 18V.
> >
> > Any insight would be appreciated -- in particular a copy of the thermo
> schematics driving these solenoids or a confirmation measurement of the
> voltage supplying these valves on some other Kiel III.
> >
> > Regards,
> > Steve
> > .
> >
>
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>
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