Diesel & HVO Fuel Polishing Systems for Backup Generators

Protect your critical backup generator systems in data centres, hospitals, and high-rise buildings with CJC® Diesel and HVO Fuel Polishing solutions. Ensure clean, reliable fuel supply, reduce maintenance costs, and prevent costly downtime.

Why Fuel Cleanliness is Critical for Backup Generators

Over time, stored diesel and HVO fuels degrade and accumulate contaminants such as water, sludge, microbes, and particles. Dirty fuel can lead to:

• Blocked injectors and valves
• Fuel pump wear and corrosion
• Microbial growth (diesel bug) and sludge formation
• Unexpected generator failures during power outages
• Higher emissions and lower combustion efficiency
• Increased operational costs and emergency repairs

Continuous Fuel Polishing Instead of Fuel Disposal

Traditionally, contaminated diesel fuel was discarded, leading to high replacement costs. With a CJC® Fuel Polishing System, fuel is continuously cleaned inside the storage tank. The system removes water, particles, and sludge, ensuring your generator always runs on clean, compliant fuel — ready to start when it’s needed most.

What Makes CJC® Fuel Polishers Different?

• Simple, single-element filtration: Unlike other systems requiring multiple filter stages, CJC polishers use one advanced cellulose-based depth filter element that captures both particles and water in a single pass. This makes maintenance simpler, reduces complexity, and lowers overall costs.
• 24/7 silent operation: Low-energy, low-noise pumps designed for continuous operation make them ideal for noise-sensitive environments like hospitals and high-rise buildings. Continuous operation avoids pressure spikes from on/off cycles, preventing particulates from breaking through the filter medium.
• Decades of proven expertise: CC Jensen has specialised in oil and fuel filtration since 1953. Trusted globally in critical industries like shipping, wind turbines, and power generation.
• Exceptional dirt and water holding capacity: Large dirt and water holding capacities mean fewer filter changes, reduced maintenance costs, and significant savings each year.

Key Benefits of CJC® Fuel Polishers

• Consistently clean diesel/HVO fuel (water content below 100 ppm)
• Reliable generator start-up and longer engine life
• Reduced consumption of inline fuel filters and lower maintenance costs
• Improved combustion efficiency and reduced emissions
• Lower total cost of ownership and higher return on investment

Technical Specifications

• Particle removal: 98.7% of all solid particles above 3 μm (3 μm absolute)
• Water removal: Reduces water content to below 100 ppm, preventing microbial growth
• Contaminant capacity: Up to 2–4 litres per insert

Easy Installation & Flexible Options

CJC® fuel polishers are simple to specify, install, and operate:

• Single or three-phase motor options
• Integrated junction box with start/stop isolator
• Mounted on a drip tray for leak prevention
• Dial pressure gauge for easy filter change indication
• Mini-mess sampling point included
• BSP threaded inlets and outlets for easy connection

Optional features include:

• BMS connectivity for remote monitoring and alarms
• Electronic particle counter and water/humidity/temperature sensors
• Drip tray leak detection

Reduce Costs and Emissions

Clean fuel improves engine efficiency, reduces emissions, and extends the life of your generator and storage tank. Fewer filter replacements and longer service intervals translate to significant savings — often thousands per year.

Learn more about CJC® Fuel Polishers here