Trane CenTraVac™ – Yearly Chiller Maintenance Procedure
This checklist provides an annual maintenance framework for Trane CenTraVac™ centrifugal chillers, supporting efficient operation, service compliance, and system longevity.
Comprehensive System Audit
- Complete inspection of all major components for wear, corrosion, and damage.
- Review total operating hours and reset service counters as needed.
- Analyze yearly alarm history for patterns and recurring issues.
- Verify proper support, alignment, and insulation of entire system.
- Document equipment condition with photos for comparison.
- Review and update equipment nameplate data and documentation.
- Assess remaining equipment life and plan for capital replacements.
Compressor Overhaul & Service
- Perform detailed compressor inspection including internal components.
- Complete oil change with manufacturer-approved oil.
- Replace oil filters and clean oil strainers.
- Extensive refrigerant leak test using advanced detection methods.
- Test oil heater system and verify proper operation.
- Inspect and calibrate inlet guide vane actuator and linkage.
- Verify shaft seal integrity (standard bearing models).
- Complete magnetic bearing system diagnostics (if equipped).
Electrical System Comprehensive Test
- Complete inspection of all electrical connections and components.
- Perform motor insulation resistance test (megger test).
- Test and document motor performance against specifications.
- Complete AFD diagnostic testing and performance verification.
- Replace control fuses and verify circuit protection.
- Test backup power systems and transfer switches.
- Perform power quality analysis including harmonics.
- Clean and test all electrical enclosures and cooling systems.
Water System Complete Service
- Comprehensive review of entire chilled water system.
- Inspect and service all valves, pumps, and flow meters.
- Complete water treatment system evaluation and adjustment.
- Replace water strainers and clean all filtration systems.
- Verify expansion tank pre-charge and system pressure.
- Test and calibrate all flow and temperature sensors.
- Inspect piping for corrosion and verify insulation integrity.
Heat Exchanger Deep Cleaning
- Perform thorough cleaning of condenser and evaporator tubes.
- Inspect tube sheets for damage, erosion, or fouling.
- Clean water boxes and inspect for corrosion.
- Replace gaskets and mechanical seals as needed.
- Verify proper venting and eliminate air pockets.
- Document approach temperatures before and after cleaning.
- Plan eddy current testing schedule if applicable.
Control System Optimization
- Install latest Tracer AdaptiView software and firmware updates.
- Complete calibration of all sensors and transmitters.
- Review and optimize all control sequences and setpoints.
- Test all control valves through full range of motion.
- Verify BAS integration and communication protocols.
- Backup all control configurations and settings.
- Update control documentation and wiring diagrams.
Safety Systems Certification
- Test and certify all pressure relief valves.
- Calibrate refrigerant monitoring system and test alarms.
- Verify emergency ventilation system operation and controls.
- Test all safety interlocks and document results.
- Update emergency procedures and contact information.
- Inspect fire suppression systems and certifications.
- Review and update lockout/tagout procedures.
Performance Analysis & Optimization
- Complete annual efficiency analysis and benchmarking.
- Calculate total cost of ownership and operating expenses.
- Review energy consumption patterns and identify savings.
- Compare performance to ASHRAE 90.
- Develop optimization strategies for coming year.
- Create executive summary of chiller performance.
- Plan capital improvements for efficiency upgrades.
Documentation & Compliance
- Update complete equipment history and maintenance records.
- Verify compliance with all environmental regulations.
- Review and update refrigerant management plan.
- Ensure all certifications and permits are current.
- Create comprehensive annual maintenance report.
- Update warranty documentation and service contracts.
- Schedule next year's maintenance activities.