CC Jensen Fuel Polishers

24/7 fuel polishing for data centres & critical facilities

Keep standby diesel & HVO generator fuel clean, dry and generator-ready at all times. CC Jensen offline polishing continuously removes water and fine contamination so your fuel system performs when it matters most.

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Trusted where failure is not an option

CC Jensen polishing is widely used in mission-critical generator fuel systems and specified by leading generator package providers for high-availability sites across the UK & Ireland — including large-scale facilities with strict commissioning and uptime expectations.

Typical applications

Data centres – standby generator resilience for high-availability operations
Hospitals & healthcare – emergency power readiness for life-safety systems
Critical power sites – utilities, airports, rail, defence, and industrial standby generation
Large building standby systems – commercial campuses and multi-generator installations

DC-ready performance

3 µm absolute filtration performance
<100 ppm water reduction (application dependent)
High contaminant holding capacity for predictable service intervals
Continuous duty protection (24/7)

Case study: Major data centre provider (UK)

Outcome: 87% particle reduction | ISO improved from 20/19/16 to 17/16/13 during a 30-day trial.

The problem
The customer previously used a mobile filtration unit plus two inline filters, but results were not satisfactory. Oil analysis showed ISO codes of 20/19/16.

The solution
C.C. Jensen supplied an FPP 27/108 test unit for a 30-day trial. During the trial, the unit successfully reduced the ISO code to 17/16/13.

Sample	Date	Water	ISO
1 Before filter	26.10.23	229	20/19/16
1 After filter	26.10.23	138	19/18/16
2 After filter	30.10.23	158	19/18/16
3 After filter	06.11.23	227	17/16/13

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The problem: stored fuel degrades quietly

In standby applications, fuel can sit for long periods. Temperature swings and tank breathing introduce moisture; fine particulates settle; and any historic debris inside tanks or pipework can be mobilised over time (especially after fuel changes or system modifications).

Transfer pumps move fuel from bulk to day tank. They don’t maintain fuel quality in storage. A dedicated polishing/recirculation loop keeps bulk fuel conditioned so your generators have the best possible chance of a clean start under load.

Common symptoms on unprotected standby tanks

Blocked filters during routine test runs
Water found at tank bottoms / low points
Unexpected injector and pump wear
Fuel quality failing acceptance tests, audits or maintenance inspections

Why CC Jensen

Simple, single-element depth filtration

Advanced depth filtration captures fine particles and water in a single process. Fewer stages typically means less complexity, easier servicing and fewer potential “points of failure” in mission-critical environments.

24/7 conditioning – not periodic “catch-up” cleaning

Continuous-duty operation keeps fuel conditioned in the background, supporting long storage periods and reducing reliance on generator runtime or ad-hoc service visits to maintain fuel quality.

How it’s installed

Option A: Pre-fitted by tank manufacturers (new build)

We supply tank builders with CC Jensen units to mount and pipe as part of the tank package — reducing on-site work and simplifying interfaces. Ideal for new data centre campuses, hospitals and critical facilities where programme certainty matters.

Option B: Installed on site (upgrades/retrofits)

For existing sites, the polisher is installed as a dedicated recirculation loop on bulk tanks and commissioned with alarms/monitoring as required. Often driven by fuel testing results, compliance policies, or the move to HVO.

For tank builders & contractors: we make CC Jensen easy