In the heart of Washington D.C. a bustling Japanese restaurant faced a recurring challenge: a malfunctioning modular chiller that threatened both customer comfort and kitchen operations. Environmental & Power Services (EPS), tasked with maintaining the system, faced challenges resolving the issue due to differing perspectives between the building’s design engineer and the equipment manufacturer.
Oversized Modular Chiller Challenges
Russell Barnes, Principal at EPS, knew he had to find a solution. The system was massively oversized with four 30-ton compressors when only a fraction of that was needed. As a result of low discharge water temperature, the modular chiller was constantly short cycling and suffering from low pressure and low discharge water temperature alarms. These failures led to frequent lockouts, leaving the restaurant without cooling and jeopardizing both customer satisfaction and food preparation.
The Secret to Modular Chiller Success
Faced with the prospect of a costly and disruptive overhaul, potentially involving storage tanks, pumps, and re-piping, Russell took a chance on Rawal Devices’ APR Control. Despite initial skepticism due to the complexity of the job, Russell installed an APR Control on each 30-ton circuit on the lead module. The results were transformative!
The APR Control provided 20 tons of modulation on each circuit, modulating 67% of the circuit’s capacity, from 30 tons down to 10 tons and all points in between. It effectively matched the system capacity to the actual load, eliminating short cycling and preventing further failures. The once-troubled modular chiller now runs consistently, ensuring a comfortable dining experience and uninterrupted kitchen operations.
This story demonstrates the power of Rawal Devices’ APR Control to resolve complex HVAC challenges, saving time, money, and frustration for contractors and their clients. It’s a testament to the effectiveness of a solution that not only addresses technical issues but also delivers tangible benefits to the end user.
Video Testimonial
Check out the video below where Russell shares his experience at Love Makoto before and after installing the APR Control in one of the modular chiller systems in this video testimonial. You’ll notice tat there are 2 APR Controls, as depicted in the image above, installed on each circuit of this modular chiller at the 1:02 mark in the video below.
