Wednesday, December 5, 2012

SEM Chiller problem

Chiller was much more noisy that normal in pump room. Disconnect brass pump head from motor. Motor quiet, pump hard to turn manually, "rusty" crud in pump. Must be failing

Pump failed once before, shortly after installation, was replaced by Thermo under warranty.

Ed will order new pump, for now run chiller only when SEM in use, not 24/7

On Thursday, took 3 tries to get chiller to run without alarming for low pressure

Pump replaced Wednesday 12/12/12. Old pump had damaged impeller blades. We also ordered a spare pump.

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