Hi Jarl,
On 01/02/14 21:47, Jarl Risum wrote:
Hi Magnus,
I recently sent the following comment to the Time-Nuts list, but it do
not turn up. So I decided to send a copy directly to you:
Thanks
"Magnus,
In my SR620 the fan is a Delta DBF0624H which unfortunately seems no
longer to be in production.
It is a 60x60x25 mm fan, 24V /0.11A.
As discussed previously on the list, the temperature controlled cooling
of the SR620 is marginal.
I have to remove the counter from it's cramped quarters on the shelf and
place it on the table whenever I try to make critical measurements over
a long time span. My room temperature is around 20 deg C.
If you cannot get rid of the noise by oiling the original fan and you
have to replace it I suggest you - just as a safety measure - to monitor
the temperature of the right side panel of the SR 620 after replacing
the fan and at the same time compare with the temperature of another,
working and healthy, SR620 in similar surroundings.
.
If you find a generally available, silent replacement fan with
sufficient cooling capacity, please let us know.
Cheers,
Jarl"
OK, I'm considering the EBM-Papst 614NGN, which is 60x60x25 24V radial
fan. Your measures helped me to go straight to the search for a fan.
Cheers,
Magnus
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