A detailed Absorption Chiller DAILY preventive maintenance Inspection checklist
1. Safety Precautions
2. Visual Inspection
- Inspect all joints and connections.
- Look for puddles or moisture accumulation.
- Check under the chiller and surrounding area.
- Use a flashlight to illuminate hard-to-see spots.
- Look for tears, holes, or missing sections.
- Check for signs of moisture or mold.
- Ensure insulation is securely fastened.
- Examine for any corrosion beneath the insulation.
- Inspect the surface for rust spots.
- Check for paint deterioration or peeling.
- Look for scratches or dents.
- Ensure no debris is lodged against the chiller.
- Check for frayed wires or exposed conductors.
- Look for discoloration or rust on terminals.
- Ensure connections are tight and secure.
- Inspect for any signs of overheating.
- Listen for unusual noises during operation.
- Observe the chiller while it is running.
- Ensure all components are securely mounted.
- Inspect for any loose bolts or fasteners.
- Inspect for discoloration or corrosion.
- Check for moisture on the surface.
- Ensure all fittings are tight.
- Look for signs of wear on insulation.
- Check for leaks around seals and joints.
- Inspect for any rust or corrosion.
- Ensure valves operate smoothly.
- Look for any unusual vibrations.
- Inspect all brackets for rust spots.
- Check for any loose or missing bolts.
- Ensure supports are stable and secure.
- Look for signs of bending or warping.
- Check for debris, dust, or dirt buildup.
- Ensure vents are clear for airflow.
- Inspect screens or filters for cleanliness.
- Look for signs of airflow restriction.
- Check hinges for functionality.
- Ensure panels close tightly without gaps.
- Inspect for cracks or damage.
- Verify safety latches are functional.
- Listen for rattling or grinding sounds.
- Observe the chiller for excessive shaking.
- Document any irregularities.
- Inspect components if noises persist.
- Check for moisture around the valve.
- Inspect for rust or wear on the valve body.
- Ensure the valve operates freely.
- Look for any signs of malfunction.
- Inspect labels for fading or damage.
- Ensure safety signage is positioned correctly.
- Check if labels are free from obstruction.
- Replace any unclear or damaged labels.
- Check for algae growth or debris.
- Inspect for leaks or corrosion.
- Ensure fan and motor function properly.
- Look for loose or missing components.
3. Operational Checks
4. Water System Inspection
- Examine joints, fittings, and connections.
- Look for water stains or pooling.
- Use a moisture meter for detection.
- Check for signs of rust or corrosion.
- Use pH test strips or a meter.
- Inspect for turbidity or discoloration.
- Record readings and compare with standards.
- Adjust treatment chemicals as necessary.
- Remove strainers and filters for inspection.
- Rinse or replace as needed.
- Check for blockages or debris.
- Reinstall securely after cleaning.
- Look for tears, holes, or moisture buildup.
- Check for signs of wear or aging.
- Replace damaged insulation promptly.
- Ensure insulation is properly sealed.
- Manually operate each valve.
- Listen for unusual sounds during operation.
- Check for leaks around valve seals.
- Lubricate moving parts if necessary.
- Measure supply and return temperatures.
- Calculate the differential.
- Ensure it meets operational specifications.
- Investigate any significant deviations.
- Listen for any strange sounds.
- Check for excessive vibrations.
- Inspect seals and connections for leaks.
- Ensure proper motor operation.
- Inspect the tank for signs of wear.
- Check the water level indicator.
- Verify air pressure in the tank.
- Look for leaks or corrosion.
- Inspect valves and sensors for operation.
- Check for leaks in the supply line.
- Ensure water is entering the system.
- Test the automatic fill feature.
- Check chemical levels and feed rates.
- Inspect hoses and connections for leaks.
- Ensure pumps are functioning properly.
- Monitor for any warning indicators.
- Inspect all accessible metal surfaces.
- Look for discoloration or flaking.
- Use a wire brush for cleaning if needed.
- Schedule repairs or treatments as necessary.
- Check each gauge for physical damage.
- Compare readings with known standards.
- Calibrate or replace faulty gauges.
- Ensure gauges are easily readable.
- Activate the blowdown system manually.
- Observe for proper flow and drainage.
- Check for blockages in the drain line.
- Ensure sensors are operational.
- Check pressure gauges for current readings.
- Compare with operational specifications.
- Adjust pressure settings as needed.
- Investigate any pressure anomalies.
- Measure flow rates at key points.
- Compare with design specifications.
- Identify any flow restrictions.
- Adjust system components if necessary.
5. Refrigerant System Check
- Check sight glass for visibility of refrigerant.
- Record current refrigerant levels.
- Identify any deviations from normal operating levels.
- Examine all valves for wear and corrosion.
- Ensure connections are tight and secure.
- Look for any signs of leakages around connections.
- Use leak detection equipment if available.
- Inspect joints and fittings for oily residues.
- Monitor surrounding areas for unusual odors.
- Consult system documentation for refrigerant specifications.
- Check labels on refrigerant containers.
- Ensure compatibility with existing system components.
- Use pressure gauges to measure current levels.
- Compare readings with manufacturer recommendations.
- Document any discrepancies for further evaluation.
- Look for signs of wear or tears in insulation.
- Check for moisture buildup around lines.
- Ensure insulation is securely fastened and in good condition.
- Manually operate pressure relief valves if safe.
- Listen for hissing sounds indicating proper operation.
- Inspect for any physical damage or corrosion.
- Inspect filters for dirt and debris buildup.
- Replace filters if they are clogged or damaged.
- Document the condition of filters in maintenance logs.
- Use thermometers to measure temperatures at key points.
- Compare readings with expected temperature ranges.
- Record any anomalies for further analysis.
- Inspect drainage lines for clogs or obstructions.
- Clear any visible blockages to ensure flow.
- Verify that drainage points are functioning correctly.
- Access records of refrigerant refills and usage.
- Look for significant changes in consumption rates.
- Investigate any anomalies for potential leaks or issues.
- Create a detailed report of all findings.
- Include photographs if applicable.
- Share the report with maintenance team for follow-up.
6. Controls and Alarms
- Activate the control panel.
- Observe the response of the system.
- Ensure all buttons and switches respond correctly.
- Check for any error messages or alerts.
- Test each alarm by simulating fault conditions.
- Confirm that alarms activate audibly and visually.
- Check interlock mechanisms by attempting to bypass them.
- Ensure reset functions work after alarms are triggered.
- Document any anomalies in the logbook.
- Include date, time, and specific readings.
- Report findings to the maintenance supervisor.
- Monitor for recurring issues in subsequent checks.
- Activate the control panel.
- Observe the response of the system.
- Ensure all buttons and switches respond correctly.
- Check for any error messages or alerts.
- Test each alarm by simulating fault conditions.
- Confirm that alarms activate audibly and visually.
- Check interlock mechanisms by attempting to bypass them.
- Ensure reset functions work after alarms are triggered.
- Document any anomalies in the logbook.
- Include date, time, and specific readings.
- Report findings to the maintenance supervisor.
- Monitor for recurring issues in subsequent checks.
- Check for any cracks or damage on screens.
- Clean screens with appropriate cleaning solution.
- Ensure all information is visible and readable.
- Replace screens if visibility is compromised.
- Use a calibrated reference device for comparison.
- Adjust sensors as necessary to match reference values.
- Document calibration results for records.
- Schedule recalibration if discrepancies are found.
- Compare current settings to the manufacturer’s specifications.
- Adjust any settings that fall outside of acceptable ranges.
- Log any changes made for future reference.
- Confirm settings with operational requirements.
- Press the emergency stop button to test functionality.
- Check that the system shuts down immediately.
- Ensure the button is easily reachable in an emergency.
- Inspect for any obstructions around the button.
- Send a test signal from the control panel.
- Verify that the remote system receives the signal.
- Check for any communication error messages.
- Document test results for verification.
- Access the data logging system.
- Look for spikes or drops in readings.
- Investigate any unusual patterns noted.
- Summarize findings for reporting.
- Check the current version against the latest available.
- Download updates if necessary.
- Follow manufacturer’s instructions for installation.
- Document the update process and outcomes.
- Look for frayed wires or loose connections.
- Check for corrosion or discoloration on terminals.
- Ensure all connections are secure.
- Replace any damaged wiring immediately.
- Test each device for operational integrity.
- Check for unusual sounds or overheating.
- Replace any malfunctioning devices.
- Log device conditions for maintenance records.
- Simulate conditions that require manual override.
- Ensure the override engages and disengages smoothly.
- Document any issues encountered during testing.
- Train personnel on manual override procedures.
- Check each indicator light for illumination.
- Replace any burned-out bulbs.
- Test functionality of warning lights under simulated conditions.
- Document the status of all indicator lights.
- Check for outdated manuals or schematics.
- Update documentation to reflect current configurations.
- Ensure all personnel have access to the latest documents.
- Log changes made to documentation for records.
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