Air cooled compression chiller daily, weekly, monthly preventive maintenance checklists

Daily Maintenance Checklist

  • Check for any illuminated warning lights.
  • Review any error codes displayed.
  • Document any faults for further analysis.
  • Reset alarms if resolved and monitor.
  • Use calibrated gauges to assess pressures.
  • Compare readings against manufacturer specifications.
  • Record any anomalies for troubleshooting.
  • Ensure no refrigerant leaks are present.
  • Listen for abnormal sounds or vibrations.
  • Check fan blade rotation direction.
  • Inspect for any physical obstructions.
  • Ensure proper power supply to the fans.
  • Remove any visible debris or blockages.
  • Check for signs of airflow restriction.
  • Clean the intake and discharge areas as necessary.
  • Ensure adequate airflow for optimal performance.
  • Use infrared thermometer or contact probe.
  • Compare temperatures to expected values.
  • Look for significant temperature differentials.
  • Document readings for future reference.
  • Inspect the drain line for blockages.
  • Check for proper flow of condensate.
  • Clean any debris from drain pan.
  • Ensure drain is not leaking.
  • Check for any illuminated warning lights.
  • Review any error codes displayed.
  • Document any faults for further analysis.
  • Reset alarms if resolved and monitor.
  • Use calibrated gauges to assess pressures.
  • Compare readings against manufacturer specifications.
  • Record any anomalies for troubleshooting.
  • Ensure no refrigerant leaks are present.
  • Listen for abnormal sounds or vibrations.
  • Check fan blade rotation direction.
  • Inspect for any physical obstructions.
  • Ensure proper power supply to the fans.
  • Remove any visible debris or blockages.
  • Check for signs of airflow restriction.
  • Clean the intake and discharge areas as necessary.
  • Ensure adequate airflow for optimal performance.
  • Use infrared thermometer or contact probe.
  • Compare temperatures to expected values.
  • Look for significant temperature differentials.
  • Document readings for future reference.
  • Inspect the drain line for blockages.
  • Check for proper flow of condensate.
  • Clean any debris from drain pan.
  • Ensure drain is not leaking.

Weekly Maintenance Checklist

  • Shut down the chiller and ensure it is disconnected from power.
  • Use a soft brush or vacuum to remove dirt and debris from coils.
  • If necessary, apply a coil cleaner and rinse thoroughly.
  • Inspect for any bent fins and straighten them carefully.
  • Power down the chiller and ensure safety protocols are followed.
  • Use a screwdriver to check all accessible electrical connections.
  • Tighten any loose connections to prevent arcing.
  • Inspect wiring for fraying or damage while checking connections.
  • Listen for abnormal sounds like grinding or rattling during operation.
  • Check for excessive vibration by placing a hand on the compressor.
  • Assess surrounding equipment for any signs of disturbance.
  • Document any irregularities for follow-up with maintenance personnel.
  • Examine insulation for cracks, tears, or signs of moisture.
  • Replace damaged insulation to maintain energy efficiency.
  • Ensure all joints are properly sealed to prevent refrigerant loss.
  • Check for any corrosion on the refrigerant lines.
  • Test water quality using appropriate testing kits for pH and chemicals.
  • Add necessary chemicals to maintain balanced water chemistry.
  • Inspect water filters and replace if clogged or dirty.
  • Document water treatment levels and any adjustments made.
  • Verify that all safety interlocks and switches are functioning.
  • Simulate alarm conditions to test response of control systems.
  • Check the operation of pressure relief valves.
  • Record the results of the tests for future reference.
  • Shut down the chiller and ensure it is disconnected from power.
  • Use a soft brush or vacuum to remove dirt and debris from coils.
  • If necessary, apply a coil cleaner and rinse thoroughly.
  • Inspect for any bent fins and straighten them carefully.
  • Power down the chiller and ensure safety protocols are followed.
  • Use a screwdriver to check all accessible electrical connections.
  • Tighten any loose connections to prevent arcing.
  • Inspect wiring for fraying or damage while checking connections.
  • Listen for abnormal sounds like grinding or rattling during operation.
  • Check for excessive vibration by placing a hand on the compressor.
  • Assess surrounding equipment for any signs of disturbance.
  • Document any irregularities for follow-up with maintenance personnel.
  • Examine insulation for cracks, tears, or signs of moisture.
  • Replace damaged insulation to maintain energy efficiency.
  • Ensure all joints are properly sealed to prevent refrigerant loss.
  • Check for any corrosion on the refrigerant lines.
  • Test water quality using appropriate testing kits for pH and chemicals.
  • Add necessary chemicals to maintain balanced water chemistry.
  • Inspect water filters and replace if clogged or dirty.
  • Document water treatment levels and any adjustments made.
  • Verify that all safety interlocks and switches are functioning.
  • Simulate alarm conditions to test response of control systems.
  • Check the operation of pressure relief valves.
  • Record the results of the tests for future reference.

Monthly Maintenance Checklist

  • Check for signs of wear, corrosion, or damage.
  • Inspect piping for proper insulation and support.
  • Ensure fittings are secure and free of leaks.
  • Look for any unusual wear patterns or discoloration.
  • Remove the filter from its housing carefully.
  • Clean the filter using compressed air or wash with water if washable.
  • Inspect for damage; replace if necessary.
  • Reinstall the filter securely in the correct orientation.
  • Identify all lubrication points on the chiller.
  • Use the recommended lubricant type and amount.
  • Ensure to wipe away excess lubricant to prevent accumulation.
  • Check for proper operation after lubrication is completed.
  • Collect data on temperatures, pressures, and flow rates.
  • Note any deviations from normal operating ranges.
  • Log data in maintenance records for future reference.
  • Analyze trends for potential issues or required adjustments.
  • Check for refrigerant oil residues around joints.
  • Listen for hissing sounds indicating leaks.
  • Use a leak detection solution if necessary.
  • Ensure connections are tight and seals are intact.
  • Measure inlet and outlet temperatures.
  • Calculate the cooling capacity against specifications.
  • Assess performance against historical data.
  • Document findings and identify any inefficiencies.
  • Check for dirt, debris, or obstructions on coils.
  • Use a soft brush or vacuum to clean surfaces.
  • Ensure air can flow freely through the coils.
  • Inspect for bent fins and straighten if needed.
  • Power down the system before inspection.
  • Use a torque wrench to tighten connections to spec.
  • Inspect for signs of arcing or burning.
  • Document any issues and repairs made.
  • Use gauges to measure refrigerant pressure.
  • Inspect all joints and connections for leaks.
  • Look for frosty areas indicating a leak.
  • Document levels and any necessary adjustments.
  • Check safety cut-off switches and alarms.
  • Simulate failure conditions to test responses.
  • Inspect control panel indicators for proper operation.
  • Log results for compliance and future reference.
  • Listen for abnormal sounds during operation.
  • Use a vibration analyzer to assess performance.
  • Check for loose mounts or misalignment.
  • Document any anomalies for further analysis.
  • Inspect insulation for tears or wear.
  • Replace or repair any damaged insulation.
  • Ensure fittings are properly insulated.
  • Document the condition for future reference.
  • Listen for unusual noises during operation.
  • Check motor temperatures to prevent overheating.
  • Lubricate fan bearings as per manufacturer guidelines.
  • Document operational issues and corrective actions.
  • Check for blockages or debris in traps.
  • Clean drains to ensure free-flowing water.
  • Inspect for signs of leaks or corrosion.
  • Document the condition of drainage systems.
  • Ensure all recent maintenance activities are logged.
  • Check for completeness and accuracy of records.
  • Update any compliance documentation as needed.
  • Store logs securely for future audits.
  • Power down the control panel before cleaning.
  • Use a soft, dry cloth to wipe surfaces.
  • Avoid using liquid cleaners directly on the panel.
  • Inspect indicator lights and displays for clarity.
  • Inspect isolators for cracks or deterioration.
  • Check mounts for looseness or misalignment.
  • Replace worn isolators as needed.
  • Document findings and corrective actions.
  • Cross-check readings against manufacturer specifications.
  • Adjust settings if necessary to stay within ranges.
  • Document any deviations and actions taken.
  • Review trends over time for any issues.
  • Check current inventory against a maintenance schedule.
  • Identify critical parts that need replenishing.
  • Order necessary parts to maintain stock.
  • Document inventory levels and orders placed.
  • Simulate emergency conditions to test systems.
  • Verify that all alarms and shut down mechanisms activate.
  • Document results of the tests for compliance.
  • Address any failures immediately.
  • Check for debris, tools, or equipment near the chiller.
  • Ensure pathways are clear for emergency access.
  • Look for signs of leaks or spills in the area.
  • Document any hazards and corrective measures taken.

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