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> Air handling unit
Air handling unit
I. Pre-Operation Inspection
Verify that all safety interlocks are functioning properly.
Check for any visible damage or wear on the unit components.
Ensure the unit is clean and free of debris.
Inspect electrical connections for signs of corrosion or wear.
Here are some additional steps that could be included in the "I. Pre-Operation Inspection" section of the New Air Handling Unit checklist
Confirm that all access panels and doors are securely closed and sealed
Inspect insulation on ducts and refrigerant lines for integrity and damage
Verify that the unit is properly leveled and anchored to prevent vibration
Check for proper airflow direction and fan rotation
Ensure that all labels and warning signs are visible and legible
Inspect the condensate drain pan for cleanliness and proper water flow
Verify that the refrigerant levels are within manufacturer specifications
Check the operation of any dampers for proper opening and closing
Review the installation manual for any specific pre-operation requirements
Ensure that the unit is properly powered and that voltage readings are within acceptable limits
II. Filter Maintenance
Check the condition of air filters and replace if necessary.
Ensure filters are installed correctly and sealed properly.
Record the date of filter replacement for maintenance logs.
Here are some additional steps that could be included in the II. Filter Maintenance section of the New Air Handling Unit checklist
Inspect the filter housing for any signs of wear or damage
Clean or vacuum the filter housing area to remove any dust or debris
Verify the filter type and size matches the specifications for the unit
Check for any bypass air around the filters that could affect performance
Evaluate the filter's MERV rating to ensure it meets air quality requirements
Monitor the pressure drop across the filter to assess its condition
Schedule regular filter inspections based on system usage and environment
Ensure proper disposal of used filters in accordance with local regulations
Educate staff on the importance of filter maintenance and its impact on system efficiency
Review and update the filter maintenance procedure as necessary
III. Fan and Motor Check
Inspect the fan blades for dirt accumulation or damage.
Check motor bearings for lubrication and signs of wear.
Test motor operation and ensure it runs smoothly without unusual noises.
Here are some additional steps you could include in the III. Fan and Motor Check section
Verify that the fan is securely mounted and properly aligned
Check for any obstructions in the fan inlet and outlet areas
Inspect the fan drive belts for wear, tension, and proper alignment
Measure the motor amperage and voltage to ensure they are within specified limits
Check for any signs of overheating on the motor casing
Inspect electrical connections for tightness and signs of corrosion
Ensure that any safety guards or covers are in place and secure
Review the fan speed settings and confirm they match system requirements
Conduct a vibration analysis to detect potential issues with the fan or motor
Document any findings, maintenance performed, or parts that need replacement
IV. Ductwork Inspection
Examine duct connections for leaks or loose fittings.
Ensure that insulation is intact and in good condition.
Check for any obstructions or blockages in the ductwork.
Certainly! Here are some additional steps that could be included in the Ductwork Inspection section of the New Air Handling Unit checklist
Inspect ductwork for signs of corrosion or rust
Verify that all duct supports and hangers are secure and in place
Check for proper alignment of duct sections to ensure efficient airflow
Examine the condition of duct seals and gaskets for wear or damage
Assess the cleanliness of the duct interior and note any necessary cleaning
Measure duct dimensions to ensure they meet specifications and requirements
Ensure that all access panels are secured and easily accessible for future maintenance
Inspect for any noise or vibrations during airflow that may indicate issues
Confirm that the duct system is properly balanced for optimal airflow distribution
Review the installation of any dampers to ensure they operate freely and correctly
V. Thermostat and Controls
Test the thermostat for proper operation and calibration.
Ensure all control settings are correctly configured.
Check that communication between the thermostat and the AHU is functioning.
Here are some additional steps that could be included in the V. Thermostat and Controls section of the New Air Handling Unit checklist
Verify the power supply to the thermostat is stable and functioning
Inspect the thermostat wiring for any signs of damage or wear
Confirm that the thermostat is mounted securely and at the correct height
Check the temperature sensors for accuracy and proper placement
Test any programmable features or schedules to ensure they operate as intended
Ensure that any remote access or smart capabilities are functioning correctly
Review the user interface for ease of use and clarity
Confirm that the thermostat is set to the appropriate mode (heating, cooling, auto)
Inspect the backup battery (if applicable) to ensure it is charged and operational
Document any discrepancies or issues found during the inspection for follow-up
VI. Drainage System Assessment
Inspect the condensate drain for clogs and obstructions.
Ensure the drain pan is clean and free from standing water.
Test the operation of the overflow switch.
VII. System Performance Testing
Measure airflow and compare it to design specifications.
Check temperature and humidity levels of the supply air.
Verify that the unit operates within the specified energy consumption limits.
Here are some additional steps that could be included in the VII. System Performance Testing section of the checklist
Conduct sound level measurements to ensure noise levels are within acceptable limits
Inspect and test the operation of the variable frequency drives (VFDs) for fan motors
Measure static pressure at key points in the duct system to verify proper airflow distribution
Check for any air leaks in the ductwork that could affect system performance
Assess the effectiveness of the heating and cooling coils by measuring the heat exchange efficiency
Evaluate the operation of dampers and actuators for proper response to control signals
Confirm the calibration of sensors and controls for accuracy in readings
Monitor system response time to changes in thermostat settings or control inputs
Perform a smoke test to identify any issues with air distribution or leakage
Review and analyze data logs from the system for trends and performance anomalies
VIII. Documentation and Reporting
Record all findings and actions taken during the inspection.
Update maintenance logs for future reference.
Report any issues or necessary repairs to management.
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