A detailed Absorption Chiller DAILY preventive maintenance Inspection checklist
1. Visual Inspection
2. Fluid Levels
- Locate the refrigerant gauge.
- Read the current level.
- Compare with manufacturer specifications.
- Note any discrepancies.
- Prepare to recharge if levels are low.
- Use a refractometer or hydrometer.
- Take a sample from the system.
- Measure the concentration.
- Ensure it meets operational specifications.
- Document any necessary adjustments.
- Locate the cooling water reservoir.
- Check the water level indicator.
- Ensure it meets required levels.
- Add water if necessary.
- Inspect for any obstructions or leaks.
- Find the hot water supply gauge.
- Check the levels against specifications.
- Ensure there are no blockages.
- Inspect piping for leaks.
- Document findings for future reference.
- Locate the chilled water level gauge.
- Verify the level against set points.
- Top up if below acceptable range.
- Inspect for signs of leaks.
- Record the current level.
- Collect a sample from the system.
- Check for cloudiness or discoloration.
- Test for pH and specific gravity.
- Compare against acceptable quality metrics.
- Plan for replacement if quality is poor.
- Identify the temperature sensor location.
- Check the current temperature reading.
- Ensure it aligns with manufacturer guidelines.
- Adjust system if temperatures are out of range.
- Log temperature readings for analysis.
- Inspect all visible piping and joints.
- Look for fluid stains or puddles.
- Listen for hissing sounds.
- Use leak detection fluid if necessary.
- Report any leaks found immediately.
- Locate the expansion tank.
- Check the fluid level indicator.
- Ensure proper air cushion is present.
- Inspect valves for leaks.
- Document any issues or maintenance performed.
- Identify all necessary fluid reservoirs.
- Check fluid levels against specifications.
- Top up as needed.
- Look for any evidence of leaks.
- Record levels and any actions taken.
- Test each gauge for functionality.
- Calibrate sensors if discrepancies arise.
- Inspect wiring for damage.
- Replace any faulty gauges.
- Log the status of all gauges.
- Access fluid level logs.
- Analyze historical data for patterns.
- Identify any concerning trends.
- Prepare a report of findings.
- Schedule follow-up actions if necessary.
3. Operational Checks
- Check the display for current temperature readings.
- Compare readings against the manufacturer's specified range.
- Adjust settings if temperatures are outside acceptable limits.
- Document any deviations for further investigation.
- Stand near the chiller while it is running.
- Identify any grinding, hissing, or knocking sounds.
- Note the duration and type of noise.
- Report any unusual sounds for further inspection.
- Check both high and low-pressure gauges.
- Compare readings to the manufacturer's specifications.
- Ensure there are no fluctuations outside the normal range.
- Document any irregularities for maintenance follow-up.
- Check the control system for scheduled cycling times.
- Observe the chiller to ensure it starts and stops as planned.
- Log any discrepancies in cycling times.
- Investigate any issues with operational scheduling.
- Measure temperature at both supply and return lines.
- Calculate the temperature differential.
- Verify that the differential aligns with operational efficiency standards.
- Document findings for performance analysis.
- Check refrigerant level indicators.
- Use gauges to assess current levels.
- Ensure levels match manufacturer specifications.
- Report low levels for immediate action.
- Inspect each valve for proper orientation.
- Manually operate valves to ensure they move freely.
- Check for leaks around valve seals.
- Document any issues found during inspection.
- Use flow meters to measure the chilled water flow rate.
- Compare readings against operational specifications.
- Adjust flow if necessary to meet requirements.
- Record flow rates for ongoing monitoring.
- Visually inspect all connections and piping.
- Look for moisture, corrosion, or ice build-up.
- Use a leak detection solution if necessary.
- Document any leaks and schedule repairs.
- Check all indicator lights for proper operation.
- Test alarm functions by simulating alarm conditions.
- Ensure all readings are displaying correctly.
- Report any malfunctioning components.
- Use the chiller's hour meter to log operating hours.
- Compare with maintenance schedule for upcoming services.
- Document hours for future reference.
- Set reminders for upcoming maintenance.
- Inspect insulation for cracks, tears, or wear.
- Check for moisture or condensation buildup.
- Replace damaged insulation as necessary.
- Record any findings for maintenance records.
- Check VFD displays for error messages or alerts.
- Observe VFD operation during chiller cycling.
- Ensure settings are optimized for current operational needs.
- Document any issues for technical review.
Use in Manifestly