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  • Users: hinesguy
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  1. hinesguy

    aurora 411 pump

    Is anyone very familiar with this pump. We are having trouble getting the correct parts for it. The distributor has sent us the wrong mechanical seals. Now they sent us a sleeve, which is not what we need. The stationary seal is also wrong.
  2. hinesguy

    Heat balance

    In my previous thread I asked about heat balance and efficiency testing. Since i will have to talk about this next week with the auditor, I have a basic question. What would cause such an imbalance in evaporator tonnage to condenser tonnage. The tubes have been cleaned recently. The machine was...
  3. hinesguy

    chiller efficiency testing

    Has anyone done a chiller efficiency test. We are getting some weird numbers. Heat balance is supposed to be 5% or less. We are getting 30% to 40%. The machines are running well, tubes have been cleaned. They are carrier low pressure 540 ton. These are my readings I took at this moment: ref...
  4. hinesguy

    expansion tank pressure

    Our expansion tank (glycol system for comfort cooling) runs at a positive pressure when the system is off and goes into a vaccuum when running, sometimes as much as 20 Hg. Is this normal.Seems like a pretty high vaccuum. System: Three 540 ton chillers, two 260 ton chillers. supplying 6 main...
  5. hinesguy

    pump insulation

    Our CHW pumps are housed in boxes stuffed with insulation. The insulation stays wet from sweating and it's starting to rust the piping. Has anyone found a better way.

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