Trane CenTraVac™ – Weekly Chiller Maintenance Procedure

This checklist supports weekly inspection of Trane CenTraVac™ centrifugal chillers, focusing on performance, safety, and proactive maintenance.

General System Overview

  • Detailed visual inspection for leaks, corrosion, wear, and damage.
  • Record operating hours and compare to weekly maintenance schedule.
  • Review alarm history for past week and identify patterns.
  • Verify all safety signage and equipment labels are legible.
  • Check insulation integrity on piping and equipment.
  • Inspect mechanical room housekeeping and access paths.

Control System Review

  • Review weekly performance data from Tracer AdaptiView.
  • Check for any recurring alarms or warnings.
  • Verify control setpoints are appropriate for current conditions.
  • Test manual override functions and return to auto.
  • Clean touchscreen display and check responsiveness.
  • Document any control system anomalies or errors.

Compressor & Refrigerant System

  • Listen for unusual compressor noises or vibrations.
  • Check refrigerant pressures and verify within range.
  • Inspect oil level and quality for contamination or discoloration.
  • Verify oil heater is maintaining proper temperature.
  • Check for refrigerant leaks at common points.
  • Monitor inlet guide vane operation and response.

Electrical Components

  • Inspect electrical connections for wear, corrosion, or overheating.
  • Check motor amperage against specifications.
  • Verify stable voltage and current supply.
  • Inspect AFD cooling fans and clean intake filters.
  • Check control panel indicators and displays.
  • Test ground fault indicators and circuits.

Water Systems

  • Verify chilled water flow rates and pressures.
  • Check condenser water flow and inspect pumps.
  • Test water quality and adjust treatment as needed.
  • Inspect strainer differential pressure.
  • Check for air in water systems and vent if necessary.
  • Verify chemical feed system operation.

Heat Exchangers

  • Inspect condenser and evaporator for dirt, dust, or scale buildup.
  • Check approach temperatures and compare to baseline.
  • Ensure airflow through heat exchangers is unobstructed.
  • Clean accessible coil surfaces as needed.
  • Verify refrigerant subcooling and superheat values.

Safety & Protection Systems

  • Test high and low pressure sensors and verify calibration.
  • Test emergency shutdown functionality.
  • Verify all safety interlocks are operational.
  • Check refrigerant monitor operation and test alarm.
  • Inspect emergency stop buttons for accessibility.
  • Review and update safety documentation.

Performance Monitoring

  • Calculate weekly average efficiency (kW/ton).
  • Review energy consumption trends for the week.
  • Compare performance data with previous weeks.
  • Document any efficiency deviations or anomalies.
  • Verify capacity control is responding to load changes.
  • Update maintenance log with performance data.
Use Checklist Online