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  • Users: vcoul
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  1. vcoul

    Really need inverter duty motors?

    Input voltage to the VFD has a lot to do with highest possible spikes onto motor windings (as does lead length). What voltage is the application?
  2. vcoul

    motor stopping rapidly during a fault

    electricpete, high boiling residue is the percentage of (usually oil) liquid left from a weight of refrigerant analyzed by a lab set up to do this. If you evaporate all the refrigerant off during a test like this you would have 0% HBR. Usually depending on how well loaded the machine is you...
  3. vcoul

    motor stopping rapidly during a fault

    Electricpete, I take it that the chiller being discussed is a low pressure R11 machine. Has a sample of the refrigerant been taken and sent out for analysis? Moisture content, total acid number and high boiling residue are 3 things that may indicate ongoing issues such as low side leaks (vacuum...

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