SOP for Operation and Maintenance of HVAC Systems

Standard Operating Procedure for Operation and Maintenance of HVAC Systems

1) Purpose

The purpose of this SOP is to outline the procedures for the operation, monitoring, and maintenance of Heating, Ventilation, and Air Conditioning (HVAC) systems. These systems are critical for maintaining the cleanroom environment and ensuring that production areas meet the required air quality and temperature standards.

2) Scope

This SOP applies to all personnel involved in the operation, monitoring, and maintenance of HVAC systems at [Company Name].

3) Responsibilities

Operators: Responsible for monitoring the HVAC system performance and reporting any malfunctions to the maintenance team.
Maintenance Team: Ensures proper functioning, calibration, and maintenance of the HVAC system.
Quality Assurance (QA): Verifies that environmental conditions in production areas meet the required standards for temperature, humidity, and air quality.

4) Procedure

4.1 Operation of HVAC Systems

4.1.1 Pre-Operation Inspection

Inspect the HVAC system before operation to ensure there are no visible signs of damage or malfunction. Check that all filters, blowers, and air ducts are clean and in good working condition.
Verify that temperature, humidity, and airflow settings match the environmental

specifications for production areas. Record the pre-operation inspection in the HVAC logbook.

4.1.2 Startup and Operation

Power on the HVAC system and set the controls for the desired temperature, humidity, and airflow. Monitor the system for 15 minutes to ensure it stabilizes at the required settings.
Perform routine checks on air quality, temperature, and humidity every 4 hours during operation. Record all readings in the HVAC logbook.

4.2 Monitoring and Maintenance of HVAC Systems

4.2.1 Routine Monitoring

Check and record temperature, humidity, and pressure differential across rooms and filters at regular intervals (e.g., daily or weekly depending on the system).
If any readings are out of the specified range, notify the maintenance team immediately and document the deviation.

4.2.2 Filter Maintenance

Replace pre-filters and HEPA filters according to the manufacturer’s schedule or if the pressure drop exceeds the allowable limit. Record the filter replacement in the maintenance log.
Inspect and clean blowers, ductwork, and air vents to ensure optimal air distribution.

4.2.3 Annual Calibration

Perform annual calibration of temperature and humidity sensors to ensure accurate environmental control. Document calibration results in the calibration log.

5) Abbreviations, if any

HVAC: Heating, Ventilation, and Air Conditioning
QA: Quality Assurance

6) Documents, if any

HVAC Logbook
Maintenance Log
Calibration Log

7) References, if any

Manufacturer’s HVAC manual
Internal SOP for filter replacement

8) SOP Version

Version 1.0

Annexure

1. HVAC Log Template


  
    Date
    Temperature (°C)
    Humidity (%)
    Airflow (CFM)
    Pressure Differential (Pa)
    Operator Initials
    QA Approval
  
  
    DD/MM/YYYY
    Temperature
    Humidity
    Airflow
    Pressure
    Operator Name
    QA Name

Date	Temperature (°C)	Humidity (%)	Airflow (CFM)	Pressure Differential (Pa)	Operator Initials	QA Approval
DD/MM/YYYY	Temperature	Humidity	Airflow	Pressure	Operator Name	QA Name