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 th
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 passiv
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 direct
I guess with humor, I clean up 20 years of stuff on/in the gear. Almost
always straight off.
Reason. That forces a very good inspection. You find all kinds of clues as
to what might be up. Burnt caps, resistors, loose wires and such.
Other thing I do is measure all supplies while cold looking for d
Yeah, good advice to get rid of the fan filter material, Paul. With the HP
8568B & 8566B, Signal Analysis Division (SAD) weighed the pros and cons of
keeping the instrument clean vs. risk of over-heating if the fan filters
were not kept clean. They decided in favor of reduced risk of heat damage
Speaking of filters.
Thanks for putting the HP brief up. They are always a good read.
Especially since these days I can afford that gear.
That said 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 nev
I'm not familiar with the 5370B and I may be way off on this, but I
wanted to pass along some information regarding another piece of HP
gear that I have which ran pretty hot, too hot in my
opinion. Hopefully this will save someone else from the same grief I
went through.
I have a HP-3336A si
Good advice Burt.
While we're on the subject of over-heating issues, on instruments with fan
filters, I'd like to mention the importance to clean their fan filters at
regular intervals.
See:
http://www.hparchive.com/Bench_Briefs/HP-Bench-Briefs-1995-01-03.pdf
Greg
-
Burt
