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  1. You guys are brutal....but not without cause. ...

    You guys are brutal....but not without cause.

    :cheers:
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    That was for the ice rink.

    That was for the ice rink.
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    Enlighten us regarding residual refrigeration.

    Enlighten us regarding residual refrigeration.
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    Thanks for the explanation Kingvalve. That's a...

    Thanks for the explanation Kingvalve.

    That's a direct drive DC Synchronous motor...another evidence of the age of this machine.

    Carbondale was made my Worthington.
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    Parts changers assume. Technicians study out the...

    Parts changers assume. Technicians study out the problem and make an educated analysis based upon the facts, the system conditions, an understanding of refrigeration principles and an equal...
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    I think you just told us what your problem is. ...

    I think you just told us what your problem is.

    Now find out why you've got high superheat, and then you'll be on your way to a solution.
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    You say the TEV is working fine, but I've not...

    You say the TEV is working fine, but I've not seen any mention of superheat.

    While sludge in the evaporator certainly could be the cause, it is likely way down near the bottom of the list of...
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    Blast from the Past

    I used to work for Hussmann in San Jose, CA. One day I called dispatch to get the next service call of the day, and there were a few "plugged drain" and other boring calls pending, so I asked what...
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    Here's a real blast from the past....similar to...

    Here's a real blast from the past....similar to what was mentioned in the previous post.

    I'll post some additional photos in the Wall of Pride section, but here's a teaser.
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    Now it all makes sense. Now, don't...

    Now it all makes sense. Now, don't misunderstand...I'm not denigrating the plumbing profession.

    You're asking about the function and intricate details of operation of the human heart, but you...
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    While the price is tough to accept, it's best to...

    While the price is tough to accept, it's best to go with the factory seal. There are different grades of neoprene....a lot of compatibility testing takes place before selecting a seal, and you'd hate...
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    Wowza....I'm getting old. Time to retire and...

    Wowza....I'm getting old.

    Time to retire and let Obama take care of me!
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    That's true, but the valve doesn't see or respond...

    That's true, but the valve doesn't see or respond to what's happening on the discharge side. All it can do is limit the pressure at its outlet, regardless of what the discharge pressure is.
    ...
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    The drawback of the pressure limiting charge is...

    The drawback of the pressure limiting charge is this:

    After the defrost cycle, the pressure between the outlet of the TEV and the inlet of the compressor might be excessive (particularly on...
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    The CPR does not care about compression ratio....

    The CPR does not care about compression ratio. It's sole purpose is to prevent the compressor suction pressure from rising to a point where it would result in compressor motor overload.
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    Again, the CPR's function is not to prevent...

    Again, the CPR's function is not to prevent liquid flooding. The amount of pressure drop through the CPR as it is throttling MIGHT result in some (or all) of any liquid present flashing into vapor....
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    Mechanical valves have their limits. If there is...

    Mechanical valves have their limits. If there is a low load situation the TEV will still attempt to maintain its superheat setting. At some point, if the load continues to be reduced, the TEV will...
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    The CPR is a valve that is designed to prevent...

    The CPR is a valve that is designed to prevent outlet pressure (compressor inlet pressure) from rising above a point that would result in compressor motor overload. Typically you'll only see these on...
  19. Best to check with the manufacturer of the...

    Best to check with the manufacturer of the compressor in the system and see what their opinion is. Likely, it's not going to be endorsed.

    The better option is to use the flush systems that have...
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    Actually he meant to say CO2. It's not uncommon...

    Actually he meant to say CO2. It's not uncommon to see pumped CO2 as the secondary fluid in a supermarket.

    BTW: Whole Foods is using transcritical CO2 applications in this country.

    Ammoniadog:...
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    On of the huge advantages of using an open drive...

    On of the huge advantages of using an open drive compressor, at least compared to the suction vapor cooled semi-hermetics, is the fact that the refrigerant vapor temperature is not being increased as...
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    If it says "Alco" on the body....it's crap.:bump:

    If it says "Alco" on the body....it's crap.:bump:
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    Verify that the oil failure control is working....

    Verify that the oil failure control is working. You can remove the pressure lines from the compressor, and cap off the flare connectors on the compressor. Then take a cylinder of refrigerant and feed...
  24. JP...Very nice!!!

    JP...Very nice!!!
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    Really......Mostly Vapor?????? A liquid...

    Really......Mostly Vapor??????

    A liquid undergoing a change of state is the most effective medium for heat transfer, as it will absorb a tremendous amount of heat/mass as compared to a liquid or...
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