When original chiller controllers fail and spares are no longer available, a controller retrofit can give the machine another decade of reliable service.
Case study: 2007 McQuay flooded chiller
A customer contacted us about a 2007 McQuay two-system flooded chiller. The chiller used efficient technology for its time: electronic expansion valves and compressor soft starters on McQuay's own screw compressors.
On site, the customer explained that the compressor output relays on the original Carel pCO open cards were failing because of the constant load and unload signals used for capacity control. McQuay could no longer supply replacement cards or offer a controller retrofit. We saw the opportunity to retrofit an MCS Magnum controller running the latest screw-compressor software for intelligent control.
We retrofitted four chillers with two systems each using the MCS Magnum range. MCS Magnum controllers use high-quality relays for the load and unload signals, eliminating the wear issue. The system was commissioned and handed back to the customer, extending chiller life by a further 10 years, with payback coming from the controller's intelligent control.
Custom control panels
We also install custom control panels, for example on a 30-year-old Trane chiller. These panels cost 20–30% less than factory panels, run Windows-based software for economical future upgrades, interface with most major building automation systems, and have a 15-inch touchscreen for a simple graphical interface.
Upgrade to new standards
Replacing outdated, worn components with new parts returns your system to peak operating condition. When it's time to replace or upgrade old equipment, our engineers work closely with you to choose the right replacements for chillers, cooling towers, pumps, valves and controls, and plan the work to minimise downtime and replace ageing equipment before it fails.
By pairing updated equipment with revised control sequences or new control systems, we help you improve reliability, increase comfort and reduce energy consumption. Contact us to discuss your requirement, large or small.
