The following procedures must be carried out at the prescribed intervals to ensure the CleanAir™ system remains fully functional. Each procedure should be documented in the service log to maintain compliance with ISO, OSHA, and facility-specific standards.
Filter Replacement
Filters are the most critical consumables in the CleanAir™ system. A clogged or damaged filter not only reduces efficiency but also risks contamination of controlled spaces.
Hazardous Waste Handling
Used HEPA/ULPA filters may contain hazardous particulates. Always dispose of them according to local environmental regulations and facility waste protocols.
Preparation:
Power down the system and engage lockout/tagout.
Don the required PPE: respirator, gloves, goggles.
Prepare a clean work area with disposal bags for used filters.
Steps:
Open the front housing panel using a screwdriver.
Release the retaining clips holding the filter in place.
Carefully slide out the old filter — avoid shaking or knocking it.
Immediately place it into a double-sealed disposal bag.
Inspect the filter frame and sealing gasket for debris or damage.
Insert the new filter with airflow arrows aligned correctly.
Lock retaining clips and close the housing panel.
Run a post-installation airflow test via the control panel.
Best Practice: Always keep one spare set of filters onsite to avoid downtime in case of unexpected clogging alerts.
Fan Assembly Inspection
The fan ensures constant airflow and even pressure across the filters. Any imbalance or vibration reduces both efficiency and lifespan.
Preparation:
Ensure system is powered off and secured.
Use protective gloves and hearing protection when testing under load.
Steps:
Remove the fan access panel.
Visually inspect fan blades for dust accumulation or physical damage.
Rotate blades manually to check for resistance or wobble.
Inspect vibration mounts for cracks, deformation, or excessive softness.
Clean blades with a lint-free cloth and, if required, compressed air.
Reinstall the fan assembly, ensuring bolts are tightened to torque specifications.
Restart system and listen for abnormal vibration or noise.
Best Practice: Use a vibration meter if available to measure oscillations against baseline factory values.
Control Panel Diagnostics
The control panel is the monitoring and intelligence hub of the system. Preventive checks ensure technicians detect faults early.
Preparation:
Power system ON.
Ensure the display is visible and not obstructed by dust or glare.
Steps:
Enter the diagnostics menu on the panel.
Run the “Airflow Test” and record the airflow measurement.
Check for filter alerts or warnings logged in the system.
Review historical event logs for anomalies (unexpected shutdowns, surges).
Confirm current firmware version; if outdated, perform a secure update.
Verify that communication with external monitoring systems (e.g., SCADA) is stable.
Exit diagnostics and return the panel to standby mode.
Best Practice: Document firmware updates in the Service Record to maintain compliance with IT/cybersecurity policies.
Housing & Bracket Checks
The external housing and support brackets ensure the unit remains secure and stable during operation. Regular checks prevent structural failure or misalignment.
Preparation:
Ensure system is powered down.
Use a torque driver and corrosion-resistant lubricant.
Steps:
Inspect external housing panels for scratches, dents, or corrosion.
Clean surfaces with mild detergent and a lint-free cloth.
Open side panels and check for dust accumulation inside the chassis.
Examine mounting brackets for structural integrity.
Tighten bolts with torque driver to manufacturer specifications.
If corrosion is present, sand affected area lightly and apply protective coating.
Best Practice: Keep brackets slightly lubricated in humid environments to reduce risk of rust.
Electrical System Verification
Electrical reliability is essential for safety and system performance. Small issues like frayed cables or loose connectors can escalate into major hazards if ignored.
Electrostatic Discharge (ESD)
When working near control boards or sensors, use an ESD strap or grounding method to prevent damaging sensitive electronics.
Preparation:
Switch off power and apply lockout/tagout.
Use insulated tools and wear dielectric gloves.
Steps:
Remove the rear electrical access panel.
Inspect wiring harnesses for cracked insulation or discoloration.
Verify grounding continuity using a multimeter.
Check all connectors for secure seating; reseat if loose.
Look for signs of overheating, such as melted plastic or scorch marks.
Reinstall the access panel securely.
Restore power and verify voltage output within normal range.
Best Practice: Use thermal imaging (if available) to detect hidden hotspots during live testing.
Airflow Sensor Calibration
Although not always required at every interval, sensors are critical for reliable performance and should be checked when filters are replaced.
Steps:
Access the airflow sensor chamber through the side panel.
Use a calibrated test meter to compare system readings to independent values.
If deviation exceeds ±5%, recalibrate using control panel procedure.
Replace sensors that fail to recalibrate.