Maintenance work on CleanAir™ industrial filtration and HVAC systems involves risks that must be properly managed. This section details all safety protocols, protective equipment requirements, and procedures that technicians must follow before, during, and after performing maintenance.
Never bypass safety interlocks. Some units include electrical and airflow interlocks that prevent operation when panels are open. Forcing the system to run in bypass mode is strictly prohibited and may cause injury.
2.1 General Safety Principles
Only qualified technicians trained in HVAC maintenance should perform the tasks described in this manual.
Always review the latest User Manual and facility Standard Operating Procedures (SOPs) before starting.
Maintenance should only be performed in well-ventilated areas with sufficient lighting.
Electrical Safety
High Voltage Hazard
The system operates on mains electricity. Contact with live wires can result in severe injury or death.
Always disconnect the unit from the main breaker, not just the local power switch.
Use a lockout/tagout (LOTO) system to prevent accidental reconnection.
Verify power isolation with a voltage detector before handling wires.
Do not touch electrical components with wet hands or while standing on damp surfaces.
Replace damaged power cables immediately.
Ensure all electrical work complies with IEC/UL electrical standards.
Mechanical Safety
Rotating and Moving Parts
Fans and moving assemblies can cause injury if touched during operation.
Allow fans to fully stop before opening housings.
Never insert tools, hands, or cleaning materials near moving parts.
Replace worn vibration mounts to avoid uncontrolled movement.
Use correct torque settings when tightening bolts to avoid over-stress and structural failure.
Chemical and Biological Safety
Filters capture contaminants from the air. Depending on the environment, these may include hazardous chemicals, biological agents, or allergens.
Treat all used filters as potentially hazardous waste.
Wear respiratory protection (minimum N95, preferably P100 respirator) when handling filters.
Double-bag used filters in sealed, labeled bags for disposal according to facility regulations.
For laboratory and cleanroom applications, follow ISO 14644 and OSHA biohazard handling protocols.
Ergonomics and Lifting
Heavy Component Hazard
Some components exceed 40 kg and pose a lifting risk.
Always lift with two persons or use a mechanical lifting aid (hoist, lift cart).
Use proper lifting techniques: keep back straight, lift with legs, avoid twisting motions.
Ensure the work area is clear of obstructions before moving large parts.
For maintenance at height, use certified ladders or platforms.
Fire and Environmental Safety
Do not perform maintenance near open flames or flammable vapors.
Ensure the system is placed on a stable, level surface free from combustible materials.
Dispose of filters and worn parts in compliance with local environmental regulations.
Keep a fire extinguisher (Class C for electrical fires) accessible during maintenance.
Personal Protective Equipment (PPE)
Always wear the following PPE when servicing CleanAir™ systems:
Safety glasses or goggles to protect against dust and particles.
Cut-resistant gloves when handling filters and sharp metal edges.
Respiratory protection when removing used filters.
Protective footwear with non-slip soles.
Hearing protection if working near operating fans in a noisy environment.
Lockout/Tagout (LOTO) Procedure
Critical Safety Step
LOTO prevents accidental energizing of the unit during service.
Identify the main breaker supplying the system.
Switch breaker to OFF.
Attach a lockout device to the breaker handle.
Place a warning tag with technician’s name and date.
Verify power isolation using a voltage tester.
Proceed with maintenance only after confirmation.
Emergency Procedures
In case of electrical shock, disconnect power immediately and call emergency medical services.
For fire, use a Class C fire extinguisher and evacuate if necessary.
If contaminated material spills during filter replacement, follow facility hazardous material protocols.
Report all incidents to the safety officer for documentation.