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HVAC: Chiller Maintenance From "Trade School" episode DTRS-212

Figure A

We follow Patrick and his instructor Terry Monks as they perform a scheduled winter maintenance on the central component of the building's A/C system: the centrifugal chiller (figure A). The chiller's main function is to chill and circulate the large amount of water used to cool air for the building. Maintenance is performed in the winter months when the chiller isn't needed. The goal is to keep the machine functioning at optimal levels so that it performs well in the summer months.

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Chiller Maintenance

Most of the service checks performed on this chiller are done after removing the refrigerant from the system into a holding tank. As mandated by federal law, only EPA-certified technicians can handle refrigerants.

Basic Tools:

open and adjustable wrenches
allen wrenches
dial indicator
cleaning solvent
heavy duty paper towels
scraper
grease pump
refrigerant conservation system
pneumatic ratchet
flashlight
vacuum pump
vacuum gauge

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