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N_Cook <diverse@tcp.co.uk>: May 15 04:16PM +0100 Probably 1977 , is about right, from product numbers C26-P0606 2-77-2P Does whatever fills the tube change its character over the decades, expanding for any given temp?. Leaking I could understand causing problem, but that would be one-off. Does not seem to be any wear on the pivotted rocking plate inside , that transfers bellows motion to microswitch plunger. Other pivot point moves via cam action of the dial up knob, unlikely that is worn. Over time the setpoint on the dial has had to go up and up and now it is effectively off the top of thse scale and microswitch is hardly on. There is adjustment inside for the switching point of the microswitch, which at half the stem is probably correct. If the rocking plate bent wiht the pressures then I'd expect to see too low a set point developing. I'll take some temp / bellows deflection data just out of interest, but also confirm it has reasonable linearity. The original setting of the pivot seems to be by choice of the deformations in the pivot/rocker plate, no way of setting at initial assembly other than go/no-go testing of each one. "Sensor" tube is well buried and next to impossible to replace with new, entire or partial because impossible to make a join in the capilliary.

Jon Elson <elson@pico-systems.com>: May 15 11:31AM -0500 N_Cook wrote:   > assembly other than go/no-go testing of each one. > "Sensor" tube is well buried and next to impossible to replace with new, > entire or partial because impossible to make a join in the capilliary. It is a leak. Probably an insanely tiny one, if it is only showing up after almost 40 years. The fill is usally a Freon appropriate for the temperature range.   Jon

"pfjw@aol.com" <pfjw@aol.com>: May 15 04:49AM -0700 > Was going to go today but am getting over a bug. Hope > to see you and the gang in September. Squack on! ;)   Despite several promises from several sources, there were no claimers for the Soldering Set. So, the offer will be repeated in September.   For the record, and even with the weather on Friday, the meet was extremely well attended and a good time was had by all! The weather cleared very nicely Friday afternoon, so the dinner, fireworks and libations (single-malt scotch and cheap beer as well as many non-toxic options) and the bonfire went very well. A link to pictures will follow soon.   There was LOTS of stuff this meet, more audio than I have seen in a good while, at least half-a-dozen Predicata TVs (all working!!), and radios, of course. One gentleman had a Marantz 7B & 8B, the latter of which had a shorted OPT, and therefore *sold* for a mere $2,000. Lots of McIntosh - I repaired a pre-amp at the clinic - it was damaged in transport so needed some pulled wires repaired, and a few other goodies.   A good time was had by all.   Peter Wieck Melrose Park, PA

"Percival P. Cassidy" <Nobody@NotMyISP.net>: May 14 09:31PM -0400 As anyone who owns one knows, the fans in a Dell PowerConnect 5324 network switch are horrendously noisy. Therefore, following the suggestions I see all over the 'Net, I bought a pair of Sunon KDE1204PKV3-MS.AF.GN fans.   One of the two new fans keeps the "Fan OK" LED green but does not spin. The other one spins but activates the red "Fan Error" LED.   Is there any simple explanation for this? With the original Delta screamers, the red LED switched on only when a fan was disconnected or prevented from turning.   Anybody else here done this fan substitution? Does a "working" (i.e., spinning) Sunon fan activate the green fan LED rather than the red one?   Perce

Jeff Liebermann <jeffl@cruzio.com>: May 14 07:14PM -0700 On Sat, 14 May 2016 21:31:48 -0400, "Percival P. Cassidy" >prevented from turning.   >Anybody else here done this fan substitution? Does a "working" (i.e., >spinning) Sunon fan activate the green fan LED rather than the red one?   I haven't done the fan transplant on a 5324 but have done it successfully on other switches. There seems to be something fishy about the 5324 connector wiring. See the video starting at 7:05. <https://www.youtube.com/watch?v=WkMBa2yfW4o> My guess(tm) is that you have the RPM sensor wire going to the wrong pin.   In the comments under the first comment by Brad Poulon is: Muhammad Khan1 year ago I installed the same fans on my PowerConnect 5324 as well, they are not whisper quiet and the front FAN led blinks red. Did you do the wire hack shown in the video? and also where did you get the fans from? Much Appreciated!!?     -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

"Percival P. Cassidy" <Nobody@NotMyISP.net>: May 14 11:22PM -0400 On 05/14/2016 10:14 PM, Jeff Liebermann wrote:   > are not whisper quiet and the front FAN led blinks red. Did you > do the wire hack shown in the video? and also where did you get > the fans from? Much Appreciated!!?   I switched the connections around the same way as the original Delta fans: Red, Yellow (the originals were blue), Black, instead of the Black, Red, Yellow sequence with which the new fans came.   I do see one difference between the fans I bought and the ones referred to in Brad Poulton's comment on YouTube: mine are KDE1204PKV3-MS.AF.GN, whereas he mentions KDE1204PKV3-MS.AR.GN   Perce

legg <legg@nospam.magma.ca>: May 15 12:00AM -0500 On Sat, 14 May 2016 23:22:15 -0400, "Percival P. Cassidy" >to in Brad Poulton's comment on YouTube: mine are KDE1204PKV3-MS.AF.GN, >whereas he mentions KDE1204PKV3-MS.AR.GN   >Perce   methinks that is just direction of airflow.   RL

Jeff Liebermann <jeffl@cruzio.com>: May 15 02:39AM -0700 On Sat, 14 May 2016 23:22:15 -0400, "Percival P. Cassidy"   >I switched the connections around the same way as the original Delta >fans: Red, Yellow (the originals were blue), Black, instead of the >Black, Red, Yellow sequence with which the new fans came.   Yep. That's correct and required. However, if wired correctly, the fan should spin even if the RPM wire was disconnected. I smell a defective fan. Try powering the red/black wires with an external 12V source. If the one that doesn't spin continues to fail to spin, it's a bad fan. The other fan seems to act like the RPM wire is disconnected, not sending a signal, or sending the wrong signal. Two defective fans?   Did you notice in the YouTube video that the author had to replace the fans twice? The 2nd time, the vendor shipped him 2 out of 3 defective fans.   >I do see one difference between the fans I bought and the ones referred >to in Brad Poulton's comment on YouTube: mine are KDE1204PKV3-MS.AF.GN, >whereas he mentions KDE1204PKV3-MS.AR.GN   I Googled for what the various dealers are selling in the way of replacement quiet fans. 1300 hits for AR and 2300 hits for AF.   Ah, found the catalog page: <https://media.digikey.com/pdf/Data%20Sheets/Sunon%20PDFs/Maglev%20Catalog.pdf> See bottom of Pg 08. MS = Maglev GN = RoHS compliant AR = Autorestart + 3rd wire with rotation detector waveform AF = Autorestart + 3rd wire with frequency generation waveform Well, there's the difference and possibly the culprit. Check what the original Delta fan is putting out on the 3rd wire and buy whatever fan is compatible. I think you can take it from here.   I still think your fan that doesn't spin is defective.   2:30AM. Maybe I should get some sleep...   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Jeff Liebermann <jeffl@cruzio.com>: May 15 02:42AM -0700 >>Perce   >methinks that is just direction of airflow. >RL   Wrong. See Pg 08 <https://media.digikey.com/pdf/Data%20Sheets/Sunon%20PDFs/Maglev%20Catalog.pdf> to decode the part number.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

avagadro7@gmail.com: May 14 06:02PM -0700 anarchy or regimentation ?   I'll need more digging. Yawl machine guys...pop...pop...pop...pop...   as the wiremen complained of...   a wire tie rig seems dated from a loose tube adhesived off the wire's diameter...   a hangup ...as I've not seen...is plastics vs street level marking chemicals.   vinyl is difficult...immediately look to a fabric adhesived marker with suitable ink. Not UL but we have an extinguisher handy.   synthetic clothing is markable ...with p[potato squeezoin's   we'll be back after the commercial

Jeff Liebermann <jeffl@cruzio.com>: May 14 07:00PM -0700 >vinyl is difficult.   Vinyl is easy, if the glue is any good. The better glues contain a small amount of MEK or other solvent. MEK disolves both the vinyl and the PVC wire insulation slightly, which causes a permanent solvent weld. The catch is that it has a limited shelf life because the MEK is rather volatile. If you want to make your own permanent stick labels, just slop ONE tiny drop of dilluted MEK onto the wire insulation and wrap the vinyl label over it. You'll need to hold it in place until the MEK evaporates, or your fingers dissolve. It's quite permanent, toxic, messy, nasty, smelly, hazardous, and dangerous, but those are minor considerations when you're engaged in the important task of attaching permanent wire labels. Also, be sure to wash your hands before touching anything that has been painted because the residual MEK in your skin pores will leave your fingerprints everywhere. That's bad because you wouldn't want anyone to know who made the mess.   > Immediately look to a fabric adhesived marker with > suitable ink. Not UL but we have an extinguisher handy.   Fabric label tend to absorb liquids and vapors. I've used fabric wire labels and find them lacking. It's not unusual to find a wire closet with all the wire labels sitting on floor. Brady Wire Markers switched from cotton cloth to vinyl cloth some time ago. I haven't tried those yet. <https://www.bradyid.com/en-us/products/labels-and-tapes/labels/wire-and-cable-labels/wire-and-cable-books-and-cards/wire-and-cable-label-books#> The bad news is that they're expensive and the cloth labels are "repositionable" which means they'll fall off without assistance.   >synthetic clothing is markable ...with p[potato squeezoin's   Cloth insulated wire? I don't think that will work.   >we'll be back after the commercial   I don't watch commercial TV any more. These days, it's streaming video via Netflix, YouTube, CuriosityStream, Hulu, and such with zero commercials. I haven't seen a commerical on TV in years.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

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