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fan speed
Posted: Tue Aug 18, 2015 1:54 pm
by expohl
anyway to quiet the fans down a little bit I installed a 12 port in my house and it's super noisy because it's in my bedroom?
Re: fan speed
Posted: Tue Aug 18, 2015 2:30 pm
by Mikea
You can achieve this with the following options:
1) Decrease the room temperature
2) Increase the airflow in the device
As i know these switches are not designed to fulfill residential - home applications but you can always use them by having in mind of that aspect.
The Fan speed is auto regulated by the device to maintain proper temperature and the Unit takes in consideration the Wattage comsumpiton of the POE ports and the Air Temperature.
Re: fan speed
Posted: Tue Aug 18, 2015 2:31 pm
by lligetfa
Two options... you could go with the MINI which is fanless or you could go with the full size rack mount version that has more fans so can run slower.
Re: fan speed
Posted: Tue Aug 18, 2015 10:04 pm
by expohl
the fan runs at a minimum speed regardless or the temp it seems. can I modify this via ssh before I dig into hacking the fan internally ?
Re: fan speed
Posted: Tue Aug 18, 2015 10:17 pm
by sirhc
Please do not attempt to HACK the fans, that is a small board and generates heat.
The fans NEED to run at the speeds they are designed to run at.
If you want a switch without fans buy the WS-6-MINI which is designed and tested to run fanless
Re: fan speed
Posted: Mon Aug 24, 2015 12:53 am
by expohl
Well it was either back to 12 POE bricks, or disconnect the fan. I disconnected the fan and removed the top case. Here's the stats, is anything going to blow up? Glad to see that it doesn't seem to care that the fan isn't working, I was afraid it would go into some failsafe mode or something.
Board Temp57
C / 135
F
CPU Temp76
C / 169
F
PHY Temp69
C / 156
F
Power Supply Board Temp38
C / 100
F
Power Supply Heatsink #1 Temp33
C / 91
F
Power Supply Heatsink #2 Temp38
C / 100
F
Power Supply Controller Temp47
C / 117
F
Re: fan speed
Posted: Mon Aug 24, 2015 12:54 am
by expohl
30vdc input and 70w total output
Re: fan speed
Posted: Mon Aug 24, 2015 6:55 am
by sirhc
Yes those Temperatures are too warm, your going to burn it up.
The MTBF is based on average operating temperature and this is on the HIGH side.
This unit is designed for air flow.
Re: fan speed
Posted: Mon Aug 24, 2015 7:21 am
by Mikea
Since you have now opened the device why dont you try to use an 120mm silent pc fan (if it fits on top cover)?
Re: fan speed
Posted: Mon Aug 24, 2015 10:25 am
by Dave
those reported temperature readings are fine, it will not burn up..it will run forever at these temperatures.