Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
KAH Operation & Maintenance Guide
Page: 68 of 88
SECTION 4 - SERVICE & REPAIR
REQUESTING ASSISTANCE
When contacting Krueger for assistance, provide the following information:
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Krueger Order Number
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Job Name (not contractor)
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Unit Model Number
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Customer’s Unit ID
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Design and actual data
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Fan RPM.
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Unit SP (across fan).– Unit CFM
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Pressure drop of water across cooling coil (PSIG)
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Air pressure drop across cooling coil
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Temperature differential across cooling coil.
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Motor voltage and amperes
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For fan or motor RPM, use a tachometer, stroboscope or revolution counter.
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The voltage and amperes can be obtained by using the appropriate multimeter test device.
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A sketch of the duct configuration would assist us in trying to resolve the problem.
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The most important item is to provide a detailed explanation of the problem.
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An orifice is the best method of measuring flow in piping and in the air system.