Fan for DEC H7861 power supply?

David Betz dbetz at xlisper.mv.com
Tue Oct 25 11:35:10 CDT 2005


Thanks! Since the remaining fan was mounted to blow air into the box,  
I'll assume that both should be blowing air in rather than sucking it  
out.

On Oct 25, 2005, at 11:30 AM, Allison wrote:

>>
>> Subject: Re: Fan for DEC H7861 power supply?
>>   From: David Betz <dbetz at xlisper.mv.com>
>>   Date: Tue, 25 Oct 2005 10:57:54 -0400
>>     To: "General Discussion: On-Topic and Off-Topic Posts"  
>> <cctalk at classiccmp.org>
>>
>> Okay, I'm stupid! I forgot to write down which direction the fan was
>> moving air when I removed the defective fan. It looks like the H7861
>> has two fans one of which sucks air in and the other blows it out. Is
>> that correct? Or do they both suck air in? The one I'm replacing is
>> the one that is mounted at an angle. The one I haven't touched is
>> setup to suck air into the box. How should I mount the diagonal fan?
>> To suck air in or out?
>>
>
> Same direction.
>
> Allison
>
>
>
>>
>> Thanks,
>> David
>>
>> On Oct 23, 2005, at 3:36 PM, Allison wrote:
>>
>>
>>>>
>>>> Subject: Re: Fan for DEC H7861 power supply?
>>>>   From: David Betz <dbetz at xlisper.mv.com>
>>>>   Date: Sun, 23 Oct 2005 14:55:07 -0400
>>>>     To: "General Discussion: On-Topic and Off-Topic Posts"
>>>> <cctalk at classiccmp.org>
>>>>
>>>> I found a replacement fan for the H7861. It is the same size and  
>>>> same
>>>> wattage but it has only three blades instead of the five that the
>>>> original had. Is this likely to produce enough air flow to prevent
>>>> the system from frying itself? Or should I keep looking for a five
>>>> blade fan?
>>>>
>>>>
>>>>
>>>
>>> I'd use it for testing and try to find the right one.
>>>
>>>
>>> Allison
>>>
>>>
>
>




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