Technical Support Role – Required Capabilities

HVAC & Chiller Expertise

• Practical work experience with HVAC system with various York chiller models, primarily YK, YVAA, YMC2, and YZ chillers.

• Hands on Experience in commissioning of numerous chillers like Mag bearing, Cetri, Screw, Scroll with different type of refrigerant R-22, R-134a, R407,R123, R1233ZD, R513A

• Hands on Experience in conducting the chiller PM activity for various model chillers.

• Good knowledge on AHUs, FCU, Cooling towers, water Pumps, EC fans used in the HVAC system.

• Capable to handle the critical issues by taking quick appropriate decision with action plans to resolve the issues.

Electrical & Electronics Expertise

• Ability to test and diagnose power electronic components such as Diode,SCRs, IGBTs, capacitors, and inductors.

• Able to understand the Circuit Breaker settings and provide the cable sizing

• Understand the root cause of the power electronic components failure and be able to prepare the root cause analysis for the failure.

• Able to test and identify defective components at the PCB level in advanced multilayer electronic boards

• Able to troubleshoot the various types of motor used in the chiller application and AHUs

• Able to understand the various types of control logic used in chiller microcontrollers.

• Capable of programming and debugging software for microprocessor-based controllers and PLC-based controllers

VSD starter & Troubleshooting

• In-depth understanding of Variable Speed Drive (VSD) starter application, benefits in chiller, terminology and working principles.

• Skilled in troubleshooting York starter models used in chillers, including D-Drive, Vyper, Hyper, and Python drives.

• Knowing the importance of the Harmonic Filter in the VSD application and its function and troubleshooting.

Refrigeration System and Performance testing Knowledge

• Strong understanding of refrigeration systems and capability to troubleshoot issues using operating data, History data or SD card data from chillers.

• Able to interpret and analyze Pressure-Enthalpy (P–H) diagrams to evaluate refrigeration cycle performance, identify system inefficiencies, and assist in troubleshooting issues related to compressors, evaporators, and condensers

• Chiller performance testing and field troubleshooting of performance related issues.

• Understanding of psychrometry and its application in the HVAC industry