don't forget, aside from voltage drop Astron is also very frequency (RFI)
sensitive too
On Apr 10, 2014, at 11:12 AM, Rich <wd3c@aol.com> wrote:
> Just to lighten it up a bit
>
> After reading all the Keurig post I believe the answer is most obvious.. Try
> Decaf..
>
> I too have a humming Astron. Was on it's own circuit to the breaker box about
> 20 ft away
> new wiring, new outlets, and hummed away. Had it load tested by a friend
> everything
> was fine. Never did find out what caused it. Did move it further away and off
> the shelf
> under the op table so I would not have to listen to it.
>
>
> On another Keurig note. A buddy of mine owns a copier business and in his
> travels
> collects Keurig from offices that are no longer working and repairs them.
> According
> to him and you can check yourself as I did. There is a selonoid valve that is
> activated
> constantly when the machine is plugged in. If you listen and unplug the
> machine you
> will hear it click. In 99% of the machines this solenoid stops working. So to
> lengthen
> the life of the machine unplug when not in use. I think the replacement part
> is a few
> bucks but a pain to get too without destroying the machine.
>
>
>
>
>
>
>
> -----Original Message-----
> From: Gary Smith <Gary@ka1j.com>
> To: Rfi <Rfi@contesting.com>
> Sent: Thu, Apr 10, 2014 11:00 am
> Subject: Re: [RFI] Keurig coffee vs Astron Rs35M
>
>
> Gents,
>
> I'm surprised others have seen this happen and under differing
> circumstances as well. An off list question asked me about the AC
> voltage drop at the Astron when this was happening & I found the
> following:
>
> With the Astron turned on the voltage rests at 118.5 when the Keurig
> is on & when the Astron hums the voltage drops to 115.6 & then
> returns to 118.5 as soon as the hum stops. The hum lasts about 3
> seconds each time and is not constant. I'm not thinking the 3V drop
> as being significant to insufficient wiring, I have hooked other
> coffeemakers to the same circuit in the past (Including a Delonge
> pump expresso maker) but never heard anything like this with them
> operation.
>
> I have two Mackie HR824 studio monitors on my bench and since getting
> the Keurig assumed this was some RFI getting into the monitors and
> was more interested in the Keurig as bringing new RFI into the house.
> It was only when I turned the monitors off and the sound happened
> when I turned on the Keurig (K65 CLB/A) and the sound reappeared. I
> then touched the speaker and it was not moving an explored to then
> find it was the Astron that was vibrating.
>
> Jim mentioned the grounding lug not being properly grounded on other
> AStrons and I'll have to open the PS & see what gives with this one
>
>> We have a Keurig single cup coffee maker (MODEL B145) at work and it's a
>> very high current device (1500 watt rating which would be 12.5 amps). On a
>> 15 amp outlet circuit that typically uses 14 gauge wiring the voltage drop
>> would be approximately 6.4 volts for a 100 foot run back to the panel box
>> and if you consider terminal resistances the drop would be even more to put
>> things in perspective. On a 20 amp outlet circuit that typically uses 12
>> gauge wiring the voltage drop would be approximately 4.0 volts if the run
>> back to the panel box is 100 feet (again not taking into account terminal
>> resistances).
>>
>> My home has a 3 car garage and the panel box is located on the outside wall
>> of the garage, so runs of 100 feet or more back to the panel box are common
>> in my home.
>>
>> Don (wd8dsb)
>>
>>
>> On Thu, Apr 10, 2014 at 8:53 AM, D C _Mac_ Macdonald
>> <k2gkk@hotmail.com>wrote:
>>
>>> Folks, if you are experiencing this sort of voltage drop, I believe that
>>> you have a problem in your house wiring! You may have bad duplex outlets
>>> or there may be high resistance connections ANYWHERE in the wiring causing
>>> it.
>>>
>>> I think it is likely that you have bad connections (high resistance)
>>> somewhere that are causing the voltage drop when high current devices are
>>> turned on. They could even cause your house to catch fire and burn down!
>>>
>>> Get help immediately!
>>>
>>> * * * * * * * * * * *
>>> * 73 - Mac, K2GKK/5 *
>>> * (Since 30 Nov 53) *
>>> * Oklahoma City, OK *
>>> * USAF, Ret (61-81) *
>>> * * * * * * * * * * *
>>>
>>>
>>>
>>>
>>>> From: kd7jyk@earthlink.net
>>>> To: rfi@contesting.com
>>>> Date: Wed, 9 Apr 2014 20:31:32 -0700
>>>> Subject: Re: [RFI] Keurig coffee vs Astron Rs35M
>>>>
>>>> : Every time I turn on my Keurig K-Cup coffee maker I've been hearing a
>>>> : very loud sound like a low loud hum coming from my Astron RS35M power
>>>> : supply.
>>>>
>>>> Mine did that when I ran an electric coffee pot upstairs. A line monitor
>>>> indicated about a 6 volt drop in the AC circuit and the RS-35 would hum.
>>>> Pot heater turned off, voltage went up, humming stopped.
>>>>
>>>> I have a Vornado fan in the hall that does the same thing.
>>>>
>>>> Kurt
>>>
>>> _______________________________________________
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>>>
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