Block 5 2D

1.Frequency

Depending air quality, filter need to be changed semi annually quarterly or even more frequently

Extend equipment life reduces operate costs, downtime, and troubleshooting expenses

1.Safety

1.Before proceeding ensure the AHU safely accessible and powered off

2.Use appropriate personal protective equipment such as gloves and masks especially if the filters are heavily soiled

2.Assessment

1.Start by assessing the condition of the current filters

2.Check sign of dirt, dust, debris buildup or damage

3.Evulate if the filter are due for replacement based on the manufactuer recommendation or any local regulations

3.Filter Selection

Choose replacement filters that match the specification of the existing filters consider factor such as filter size, filtration efficiency and airflow capacity

Higher MERV rating indicate better filitration but may also lead to increased energy consumption due to higher resistance

4.Filter Removal

Remove the access panel or door covering the filter compartment of the AHU

Carefully extract the old filter taking note of their orientation and placement

5.Cleaning

If the refusable filters are being used, clean them according to the manufacturer instructions

Involve vacuuming or washing the filters to remove acumulated dirt and debris

6.Installation

Install the new filters following the correct orientation indicated by arrows or other markings on the filters

Ensure a proper seal between the filter and the housing to prevent air bypass

7.Sealing and Closing

Securely close the access panel or door making sure it tightly sealed to prevent air leakage

8.Testing

After replacing the filters, turn on the AHU and monitor its operation

Check for any unusual noises, vibration, or change it airflow

Assess the indoor air quality to ensure it meet the desired standards

9.Schedule Regular Maintenance

Implement a maintenance schedule for inspecting and replacing filters at appropriate intervals

Help issue related to poor air quality and HVAC system ineffciency

10.Documentation

Keep detailed record of filter replacements, including dates, filter types, and any obsevation made during the process

This information can be vaulable for tracking maintenance history and identifying any recurring issues