Product Overview

Summary: This Safe Operating Procedure sets out a clear, step‑by‑step approach for safely maintaining and troubleshooting industrial and commercial chillers in Australian workplaces. It helps duty holders manage mechanical, electrical and refrigerant hazards while improving system reliability, energy efficiency and compliance with WHS and environmental obligations.

Chillers are critical assets in many Australian facilities, from office towers and hospitals to food processing plants and data centres. Poorly managed maintenance can lead not only to costly breakdowns and product loss, but also to serious safety incidents involving electricity, rotating machinery, pressurised systems and refrigerants. This Chiller Maintenance and Troubleshooting Safe Operating Procedure provides a structured, repeatable method for planning and carrying out routine servicing, inspections, fault finding and repairs while controlling key WHS risks.

The SOP guides workers through pre-start checks, lockout/tagout requirements, safe access to plant rooms, refrigerant handling considerations, and systematic diagnostic steps for common chiller faults. It embeds Australian WHS expectations, including risk management, isolation procedures, and environmental responsibilities for refrigerant leaks and waste. By standardising how your team approaches chiller maintenance and troubleshooting, this document supports safer work, more predictable performance, reduced downtime and a clear audit trail that demonstrates your organisation’s commitment to compliance and best practice.

Key Benefits

• Improve reliability and uptime of chiller plant through consistent, preventive maintenance routines.
• Ensure safe work practices around electrical, mechanical and refrigerant hazards in accordance with Australian WHS requirements.
• Reduce unplanned outages, product spoilage and costly emergency call‑outs through structured troubleshooting steps.
• Standardise training and competency expectations for technicians and contractors working on chillers.
• Support compliance with environmental and refrigerant management obligations, including leak detection and reporting.

Who is this for?

• Maintenance Technicians
• HVAC Technicians
• Refrigeration Mechanics
• Facilities Managers
• Engineering and Maintenance Supervisors
• WHS Managers
• Plant Managers
• Building Services Managers
• Operations Managers in Manufacturing and Food Processing
• Data Centre Facility Coordinators

Hazards Addressed

• Electric shock and arc flash from live electrical components and control panels
• Contact with rotating equipment such as fans, pumps and compressor drives
• Exposure to refrigerants causing cold burns, asphyxiation or cardiac sensitisation
• Release of high‑pressure refrigerant or water/solution lines during maintenance
• Slips, trips and falls in plant rooms, on platforms or around wet surfaces and condensate
• Manual handling injuries from lifting panels, components and tools
• Noise exposure from compressors, fans and associated plant
• Thermal stress and burns from hot pipes, discharge lines and adjacent boiler or heating systems
• Environmental contamination from refrigerant leaks, oil spills or improper waste disposal
• Working in confined or poorly ventilated plant rooms with limited egress

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Codes of Practice
• 5.0 Chiller System Overview and Major Components
• 6.0 Hazard Identification and Risk Controls for Chiller Work
• 7.0 Required Tools, Test Equipment and Personal Protective Equipment (PPE)
• 8.0 Pre‑Work Planning, Permits and Isolation (LOTO) Requirements
• 9.0 Safe Access, Housekeeping and Plant Room Requirements
• 10.0 Routine Preventive Maintenance Schedule and Checklists
• 11.0 Detailed Step‑by‑Step Maintenance Procedures
• 12.0 System Start‑Up, Shutdown and Post‑Maintenance Verification
• 13.0 Structured Troubleshooting Guide for Common Faults
• 14.0 Refrigerant Handling, Leak Detection and Environmental Controls
• 15.0 Electrical Safety, Testing and Tagging Considerations
• 16.0 Manual Handling and Use of Lifting Aids for Components
• 17.0 Emergency Procedures (Leaks, Spills, Electrical Incidents, Injury)
• 18.0 Documentation, Recordkeeping and Reporting Requirements
• 19.0 Contractor Management and Site Induction Requirements
• 20.0 Training, Competency Assessment and Review of the SOP

Legislation & References

• Work Health and Safety Act 2011 (Cth) and relevant state and territory WHS legislation
• Work Health and Safety Regulations 2011 (Cth) and state/territory equivalents
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• Safe Work Australia – Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace
• AS/NZS 5149 (series): Refrigerating systems and heat pumps – Safety and environmental requirements
• AS/NZS 3000:2018 Electrical installations (Wiring Rules)
• AS/NZS 1677: Refrigerating systems (where still referenced in existing installations)
• AS/NZS ISO 31000:2018 Risk management – Guidelines
• Ozone Protection and Synthetic Greenhouse Gas Management Act 1989 (Cth) and associated regulations