Dry & Wet Chemical Extinguishing Systems Maintenance Checklist

Dry and wet chemical fire extinguishing systems are critical for protecting kitchens, fuel storage areas, and industrial equipment from fast-spreading fires. These systems react instantly to heat or flame, releasing an agent that quickly knocks down flames and prevents re-ignition, but only if every part is properly maintained.

Over time, cylinders can lose pressure, nozzles may clog with grease or debris, and fusible links can corrode or fail to trigger. Neglecting these inspections can delay discharge or cause incomplete suppression, putting people and property at serious risk. Regular testing and documentation ensure your system is ready when it’s needed most.

Our Dry & Wet Chemical Extinguishing Systems Maintenance Checklist makes this process simple by breaking down what to inspect each month, semi-annually and annually – so nothing gets overlooked.

What’s Inside the Checklist

Your downloadable checklist includes:

• Monthly Inspections: Cylinder pressure checks, nozzle cleaning, manual pull station accessibility and piping inspection.
• Semi-Annual Tasks: System actuation testing, fusible link replacement, and shutdown interlock verification (for wet chemical kitchen systems).
• Annual Maintenance: Full discharge testing, cylinder hydrostatic checks, and system coverage verification.
• 6-Year Maintenance: Cylinder hydrostatic testing and internal inspection per NFPA requirements.
• Post-Fire Procedures: Steps for agent replacement, cleaning, and system reset after activation.
• Maintenance Documentation Log: Built-in space for tracking inspections, service types, and technician notes.

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Consistent maintenance keeps your suppression systems dependable, compliant, and ready to perform when seconds matter most.

Download the checklist below to stay on top of inspections and maintain reliable protection across your facility.