A micro-processed control panel is provided with the chiller to provide precise chilled water control as well as monitoring, protection and adaptive “limit” functions. These controls monitor chiller operation and prevent chiller operation under abnormal conditions. They can compensate for abnormal operating conditions by keeping the chiller in operation by modulating its components, rather than simply turning it off when a safety setting is violated. When a more serious problem occurs, a message helps diagnose the problem.
Modern control systems not only provide precision, optimized control and chiller protection, but can also interface with the building automation system. In an ice water system, optimum performance depends on the entire system, not just a control and design problem for chillers.
The starter panel connects the chiller motor to the electrical distribution system. Its primary function is to turn on and off the power line chiller. The starter panel, however, has a much more important function and must be properly interlocked to work with the chiller control panel and oil pump.
Every electric chiller needs a starter panel. This should be compatible with the characteristics of the compressor motor and the chiller electric. There are many types of starters, including triangle star, direct starter, auto-transformer, and solid state. The VFD, which is used to modulate engine speed during normal operation, also serves as the starting type. Important aspects to consider when selecting a starter type first include cost, reliability, voltage, and available current.
