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Compressor Hot Gas Bypass (HGBP) heating water

When microprocessor set point (SP1,SP2) is set below 45F, the chiller runs constant and appears to be heating water rather than cooling. Gylcol freeze protection may have been...

Compressor Warranty

I have a 4 year extended warranty on my Copeland compressor. What are the procedures for warranty return? STANDARD Compressor Coverage: Legacy offers both standard and optional...

Condenser Fan Motor Run Capacitor Failure

Air cooled condenser fan motor run capacitor has failed on a 480v-3ph-60hz (T4) chiller system. This can cause the condenser fan motor to not spin normally and can also cause...

Convert Amperage between Single and Three Phase

The table below can be used to convert amperage between single phase and three phase and vice versa.

Copeland Semi-Hermtic Solid State Module Troubleshooting

Copeland Semi-Hermtic compressor will not start Possible issue with Copeland Solid State Compressor Motor Protector Attached article covers operation and troubleshooting...

Copper Pipes - Insulation and Heat Loss

The heat loss from an insulated copper pipe or tube to the surrounding air can be found in the table below.

Copper Piping Water Velocity Limits

The water velocity in copper pipes should be kept within certain limits to avoid erosion, corrosion and excessive noise generation.

DotMed Industry Sector Reports - Legacy Chillers

Chillers: Legacy Chiller Systems -Indispensable to Any Hospital's Operations by Jean Grillo

Drawing - Chiller Networking - Dual Chiller Operation - EWON remote VPN access

Article and download PDF provides details on network configuration for automatic lag/lead between two Legacy process chillers equipped with IDEC controls. Customers should use...

Drawing - Chiller Networking - EWON secure VPN remote chiller control

Article and download PDF provides details on network configuration for a secure VPN connection to a Legacy process chiller for remote control. NOTE: The network configuration...

Drawing - Chiller Networking - HMI webserver on building subnet

Article and download PDF provides details on network configuration to connect process chillers HMI with integrated web server to building subnet using a factory installed MOXA...

Drawing - Chiller Networking - Remote wall mounted HMI configuration - Standalone

Article and download PDF provides details on network configuration remote wall mounted HMI. NOTE: The network configuration addressed in this article covers optional equipment...

Electrical Definitions, Terms, and Formulas

• Volts - The units of electrical potential or motive force. The force is required to send one ampere of current through one ohm of resistance.
• Ohms - The units ...

Field Case Study - SUPERCHANGER Cools Quench Solution at Rockwell International

When engineers at Rockwell Internationalís Automotive Products Division were planning a new hardening furnace for heat treating universal joint components, they wanted an...

First of a kind factory rebate program to help businesses located in US drought zones

Friday, March 22, 2002 - Legacy Chillers to offer first of a kind factory rebate program to help businesses located in US drought zones conserve millions of gallons of water.

GLF/API customer base training by Legacy Chiller Systems

Webinar recorded 7-16-2008 covering chiller service and maintenance information for biodiesel production plants. Presented by Legacy Chiller Systems.

Global Warming - Newsweek 2007

Aug. 13, 2007 issue - Sen. Barbara Boxer had been chair of the Senate's Environment Committee for less than a month when the verdict landed last February. "Warming of the climate...

Global Warming Worries

Business Week - 10-30-2006 - Global Warming: Here come the Lawyers. The next wave of litigation after Tobacco, Guns and Junk Food. Why Detroit, Big Oil and untilies should worry....

Glycol - Adding to chiller loop

There are many applications where a chillers process loop has the possibility of freezing by way of (direct or indirect) contact with cold ambient air temperatures or the process...

Goulds Pump Curves And Other Information

The downloadable PDF files below provides usefull Pump Curve information that can be used to properly select the correct pump for your chiller system.

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