[ETO_Alpha] Dead Blower on Alpha 87a

[Chris Codella, W2PA]

Unless the schematic in my manual is wrong, it's wired across the 220V 
primary - no center tap.  The manual also does not indicate that a 110V 
setup is even possible - specs say 190-250V only.  

Of course, the 87A could be entirely different.  Anybody have the manual?

Chris


Paul Playford wrote:
> I think you will find the blower is 110vac and power comes from the 
> center tap of the 220vac primary.
>
> That way the blower will operate when the amplifier is wired for 
> 110vac or 220vac.
>
> de Paul, W8AEF
>
> ZF2JL/ZF2TA  FO8DX/FO8PLA  8Q7AA  XZ0A  VU7RG
> soon to be TX5C
>
>
> ----- Original Message ----- From: "Chris Codella, W2PA" <w2pa at arrl.net>
> To: <ETO_Alpha at mailman.qth.net>
> Sent: Wednesday, February 13, 2008 9:38 AM
> Subject: [-] Re: [ETO_Alpha] Dead Blower on Alpha 87a
>
>
>> Joe,
>>
>> I have an 89, which may have the same blower since the basic physical 
>> design is the same.  My schematic says the blower is powered by the 
>> 240V tap on the transformer (i.e. the primary).
>>
>> 73,
>> Chris, W2PA
>>
>> Joe wrote:
>>> My question now is whether the blower is 120VAC or is it fed through 
>>> a lower voltage?  I haven't taken the blower out of the case at this 
>>> time, pending a determination as to whether I should look at a 12 
>>> VDC path, or, if it's 120VAC, simply remove the blower and order 
>>> another one.
>>> All thoughts are welcome.......
>>
>
>
>