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Is Measuring Superheat at Compressor of Any Value?

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Is Measuring Superheat at Compressor of Any Value? Ken Hall 07-24-2006
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Posted by Ken Hall on July 24, 2006, 11:10 am

The suction line sweats heavily at the compressor and the liquid line
leaving the compressor is barely warm. This suggests to me the system
is overcharged. It's easy for me to measure the superheat at the
compressor (split unit), but not at the evaporator. Will a reading at
the compressor tell me anything useful about the system charge?

Another way of asking this is how much is a typical difference in the
evaporator superheat and the condenser superheat in a split unit? The
suction line is about 30 feet long.

-- Ken

Posted by Noon-Air on July 24, 2006, 2:50 pm

>
> The suction line sweats heavily at the compressor and the liquid line
> leaving the compressor is barely warm. This suggests to me the system
> is overcharged. It's easy for me to measure the superheat at the
> compressor (split unit), but not at the evaporator. Will a reading at
> the compressor tell me anything useful about the system charge?

It tells me that *if* you are a tech, then you need to go back to school.

> Another way of asking this is how much is a typical difference in the
> evaporator superheat and the condenser superheat in a split unit? The
> suction line is about 30 feet long.
>
> -- Ken



Posted by Ken Hall on July 24, 2006, 7:57 pm
Anyone have a helpful answer?

wrote:

>
>>
>> The suction line sweats heavily at the compressor and the liquid line
>> leaving the compressor is barely warm. This suggests to me the system
>> is overcharged. It's easy for me to measure the superheat at the
>> compressor (split unit), but not at the evaporator. Will a reading at
>> the compressor tell me anything useful about the system charge?
>
>It tells me that *if* you are a tech, then you need to go back to school.
>
>> Another way of asking this is how much is a typical difference in the
>> evaporator superheat and the condenser superheat in a split unit? The
>> suction line is about 30 feet long.
>>
>> -- Ken
>


-- Ken

Posted by =?iso-8859-15?Q?Tekkie=AE?= on July 24, 2006, 8:52 pm
Ken Hall posted for all of us...
I don't top post - see either inline or at bottom.

> Anyone have a helpful answer?
>
Yeah!
--
Tekkie

Posted by Bubba on July 24, 2006, 8:56 pm
On Mon, 24 Jul 2006 18:57:41 -0500, Ken Hall

>Anyone have a helpful answer?

Yup.
Step AWAY from the machine. You dont have a clue what you're doing and
all you can do is make it worse. Seek out the help from someone
professional in the business.
Bubba

>
>wrote:
>
>>
>>>
>>> The suction line sweats heavily at the compressor and the liquid line
>>> leaving the compressor is barely warm. This suggests to me the system
>>> is overcharged. It's easy for me to measure the superheat at the
>>> compressor (split unit), but not at the evaporator. Will a reading at
>>> the compressor tell me anything useful about the system charge?
>>
>>It tells me that *if* you are a tech, then you need to go back to school.
>>
>>> Another way of asking this is how much is a typical difference in the
>>> evaporator superheat and the condenser superheat in a split unit? The
>>> suction line is about 30 feet long.
>>>
>>> -- Ken
>>
>
>
>-- Ken

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