Centrifugal chiller technician

Job Description

Roles & ResponsibilitiesPreventive Maintenance (PM)Execute scheduled PM on water-cooled and air-cooled chillers (centrifugal, screw, and/or absorption as applicable) per OEM manuals and PM calendarPerform oil analysis, refrigerant level checks, vibration checks, and eddy current tube testing (ECT) scheduling/coordinationMaintain PM checklists, update CMMS records, and close out work orders with accurate readingsCorrective Maintenance (CM)Diagnose and rectify chiller faults (compressor, refrigerant circuit, electrical/control panel, oil system) with minimal downtimeRespond to breakdown calls/alarms, perform root cause analysis (RCA), and implement corrective/preventive actionsCoordinate spare parts requisition and manage critical spares inventory for chillersLiaise with OEM service engineers for warranty repairs or complex faultsOverhaulingPlan and execute major/minor overhauls of chillers (compressor rebuild, motor rewind coordination, tube bundle cleaning/retubing, gasket/seal replacement)Prepare overhaul scope of work, spares list, and job cards; supervise contractor/OEM teams during overhaulConduct pre- and post-overhaul performance testing (capacity, kW/ton, approach temperature) and vibration/leak testingEnsure proper isolation, LOTO, refrigerant recovery/reclaim, and safe disposal per environmental regulationscommissioning of chillers.ReportingPrepare daily/shift logs, PM/CM completion reports, overhaul reports, and downtime/failure analysis reportsMaintain chiller performance trending (COP, approach, kW/ton) and highlight deviations to managementUpdate asset history cards/CMMS and prepare monthly maintenance KPI reportsDocument lessons learned and update SOPs/PM procedures as neededTeam SupervisionSupervise a team of technicians/helpers, assign daily tasks, and monitor job completion against scheduleConduct toolbox talks, enforce HSE/PTW compliance (confined space, working at height, LOTO, refrigerant handling)Train and mentor junior technicians on chiller systems and safe work practicesCoordinate with shift supervisors/operations engineers on plant load requirements and maintenance windowsEnsure tools, PPE, and spare parts availability for the team; manage attendance and performance of crewDesired Candidate ProfileEducation & CertificationDiploma / ITI / Trade Certificate in Mechanical, Refrigeration & Air Conditioning (HVAC-R), or equivalentChiller OEM training certificates (e.g., Carrier, York, Trane, Daikin, Hitachi) preferredRefrigerant handling certification (F-Gas or equivalent); Saudi Aramco/vendor safety certifications a plusExperience5?8+ years' hands-on experience on centrifugal/screw chillers (water & air cooled) in district cooling, HVAC, or industrial utility plantsProven experience in PM, CM, and full overhaul of large-tonnage chillers (500 RT and above preferred)Prior experience in GCC district cooling projects (e.g., Tabreed, Empower, Marafeq) is an advantageExperience supervising a maintenance crew of 3?10 techniciansTechnical SkillsStrong knowledge of refrigeration cycle, compressor types (centrifugal/screw/scroll), controls (Micro/Pro-Vision, UCP, etc.), and BMS integrationSkilled in vibration analysis, oil/refrigerant sampling, eddy current testing coordination, and rigging for overhaulsWorking knowledge of electrical/control panels, VFDs, and instrumentation troubleshootingProficient with CMMS (Maximo, SAP PM, or similar) and MS Office for reportingSoft Skills / Other RequirementsStrong leadership and team management ability; effective communicator in English (Arabic a plus)Good analytical/RCA skills and ability to work under pressure during breakdownsWillingness to work rotational shifts, be on-call, and respond to emergency callsValid Saudi driving license preferred; transferable Iqama (if applicable)Sound HSE awareness ? confined space, LOTO, working at height, PTW system.

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