After cooling and restarting the 5370B and observing its behavior, we
judged that it was more likely it had an unheated 10811 than an
oscillator of lower stability, so we popped the lid (the possibility
that it didn't have a 10811/10544 was the reason for leaving it
intact so it could be
Paul wrote:
Speaking of filters.
* * *
many if not all of the filter material is degenerated.
Its soft and sticky. At a min get rid of it.
My environments clean so I leave them out.
Have never found a replacement. Maybe some home depot air filter.
The HP 5345A manual specifically
The black/green Scotchbrite pads contain an abrasive which
might be friable. I am not sure about the white, but they
probably contain something as well. Just something I worry
about when using non filter materials as filters.
I find that the easiest source of the exact material is in
the
The catch with the thermal fuse in an un-plated socket is that as it
ages the socket oxidises and
the heater current generates enough ohmic heating through a high
resistance socket
to heat the fuse through its leads. This opens the fuse the next time
the oven is heated from cold.
I just
The blue Scotch Brite pads also have friable material in them, avoid.
Consider visiting your local HVAC (heating, ventilation, and air
conditioning) shop
Sheet filter material is commonly available from them,
and it does not deteriorate like the foam stuff.
Review all grades and thicknesses
I believe it is marked on the fuse body, and, possibly may be around 125C.
However it has been a long long time since I have looked at one. Regards -
Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
-Original Message-
From: time-nuts-boun...@febo.com
According to my manual, it is HP Part Number 10811-80008, which is described
as UTG Fuse-Thermal 115C 1.0A 250V, in stock at HP for $5.69, available
until gone. The old part number is 2110-0617.
I presume that means 115 degrees C.
I purchased a few several months ago (price was lower as I
Guess my memory was not that bad :). - Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of J. L. Trantham
Sent: Wednesday, September 15, 2010 9:07 AM
To:
Both Philmore and Keystone (and lots of others) sell fan filter kits. They
have a grill and the media.
These people are cheaper than most:
http://www.arcade-electronics.com/SearchResult.aspx?KeyWords=fan%20filter
But for $25 or so you can get 36 square feet of the stuff:
Hi
Any idea which of the pore size choices (30 through 100 ppi) is the closest
to what HP used? 36 square feed is pretty much a lifetime supply. Buying a
chunk of each would have you set forever...
Bob
-Original Message-
From: time-nuts-boun...@febo.com
Hi.
As you have identified, it's reticulated foam that we need for this
application. From memory I'd say the 35 pore per inch size is close to what HP
used. It works out at about 0.8mm pore size. Reticulated foam is interesting.
It's made from closed cell foam were the walls are either
Well not sure 36 ft would last a life.
It would rot like the original.
The answer has to be very available like taking aircon filters apart from
home depot.
69 cents each 2 X 3 ft...
On Wed, Sep 15, 2010 at 1:26 PM, Robert Atkinson robert8...@yahoo.co.ukwrote:
Hi.
As you have identified, it's
30 to 45 PPI is the most common. Either will work fine, it just depends upon
the size of the crud you want to keep out (and the size of the dust that will
accumulate in the machine). Filters for the 5370 are probably a good idea...
the fan blows directly onto the open-frame front panel
Mark wrote:
Urethane technology has come a long way since the 5370 came
out... but given time, all urethanes seem to revert to their primordial goo.
It was for this reason that I started using the ScotchBrite
sheets. 3M originally supplied both uncoated and abrasive-coated
material (the
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