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Chiller System Problems - Excessive Noise

Compressor making excessive noise at startup. Three phase scroll compressor running backwards. Condition normally occurs at initial startup of chiller. Most common cause is the...

Chiller System Problems - HTA & LTA alarms

HTA is indicated on micro display. After 5 seconds or so, the LTA comes on. I cannot change any set points through programming mode either. Also, I have just replaced both...

Chiller System Problems - Micro-processor won't respond

Pressing correct buttons to get into programming mode but the micro-processor won't respond. micro-processor is unable to confirm programming mode access request. If holding the...

Chiller System Problems - Scroll Processor Won't Start

Copeland Scroll compressor will not start. Copeland Scroll compressors, 10 HP and over, are equipped with a solid-state compressor protection module. This devise is mounted within...

Chiller Systems - Flooded Condenser Valves

The attached articles provided detailed information on flooded condenser valves used in Legacy sytems designed for low ambient conditions. These articles provide information on...

Chiller Systems - Head Pressure Control Information

Attached article summary:

Condenser capacities are based, in part, on TD (temper-ature difference) between the ambient and the refriger-ant condensing temperature. As...

Chiller Systems - Restart during winter conditions

Restart of an air cooled condenser during the winter can be a challenge as snow and ice tends to be very opportunistic. During no (or low) load conditions, some basic system...

Chiller Systems - Starting your Chiller

The attached PDF provides copies of factory required startup authorization and startup check list.

NOTE: FAILURE TO PERFORM PROPER STARTUP MAY CAUSE OPERATIONAL DELAYS...

Chiller Systems Microprocessor Replacement

After performing a chiller microprocessor controller replacement on a dual state "D Series" chiller the second stage programming functions are not showing up in the programming...

Chiller Systems Recommended Maintenance

The attached PDF article provides factory recommended service items. Note: The schedule provided should be considered as a general guide for service tasks and frequency. In many...

Chiller TECHNET Article - Chiller Systems and Glycol Use

Article covers use of propylene and ethylene Glycols in process chiller applications. Glycol impact on both design and operation of process chiller systems can be dramatic...

Chiller TECHNET Article -AuraCool Chiller Economizer Technology - Introduction

Chillers and Data Centers - Greening the Data Center offered by Legacy Chiller Systems

What is a green data center? Data center industry stakeholders are discussing definitions in various consortiums and forums, but a obtainable document is not currently available

Chillers and Data Centers - Increasing Efficiency offered by Legacy Chiller Systems

IT (information technology industry, and data centers operator discussions. The focus has been driven by: Rising data center energy costs, the climate change debate and overall...

Chillers and Data Centers - Increasing Efficiency Plus Reliability offered by Legacy Chiller Systems

Enterprise data centers support the majority of financial and corporate institutions. Normally data centers are required to operate 24/7. These centers typically are operating...

Chillers and Data Centers - Outside Air Economizers offered by Legacy Chiller Systems

Compared to most types of commercial buildings, data centers are energy hogs. A large data center, for example, can easily consume as much electrical power as a small city....

Chillers and Data Centers -Data Centers - Heat Containment offered by Legacy Chiller Systems

Todays data centers are plagued with cool air oversupply and air distribution short-circuiting. Instead of supplying more chilled air, we can use a simpler approach to satisfy the...

City water changeover / Economizer power open spring closed valves

The attached PDF includes information needed for service of the JCI VA9208 power open spring return values. Legacy Chiller Systems optional auto city water change over panels...

Closed Loop Chiller System - Automatic Air Vents

A closed loop chiller system has many operational advantages over an open loop (open vented) system. Engineers and installers must consider automatic air removal when designing...

Closed Loop Chiller System Training by Legacy Chiller Systems

Webinar recorded 6-24-2008 covering closed loop chiller systems advantages and disadvantages. Presented by Legacy Chiller Systems with Panelists from International Chemtex Corp...

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