Frequently asked questions
Systems, specification, and ownership
Answers drawn from FujiClean USA's published technical documentation.
Systems and specification
How does a FujiClean system treat wastewater?
FujiClean calls the process contact filtration. Wastewater follows a circuitous route through anaerobic and aerobic chambers inside a single tank, passing over fixed-film media where bacteria digest organic matter and the media also filters the flow mechanically.
Two airlift pumps do the internal work. A recirculating pump returns process water and sludge from the aerobic zone back to the sedimentation chamber, two to four times the daily inflow on CE models and four to six times on CEN models. An effluent pump equalizes flow and meters treated water out.
What is the difference between CE and CEN models?
CE models are certified to NSF/ANSI 40. CEN models are certified to NSF/ANSI 40 and 245, which adds enhanced nitrogen reduction, and they recirculate at a higher rate to achieve it. Where local regulations require nitrogen removal, the CEN series is the one to specify.
Is a septic tank required ahead of the system?
Not by the system itself. FujiClean connects directly to the home's outgoing waste line, which removes a component from the design and reduces the footprint of the sanitary system.
Some sites do include a settling tank ahead of treatment where local or state requirements call for one, and some include a post-treatment pump station where treated water must be lifted to reach its discharge point.
What are the tank dimensions and weights?
Tanks are fiber-reinforced plastic. A CEN5 measures 96 inches long, 49 inches wide, and 66 inches high, and weighs 463 pounds empty. Every model's dimensions, invert heights, access port detail, and total volume are published in the specification table.
Where do the blower and control panel go?
Both sit above ground. FujiClean recommends siting them in a protected, accessible location, and where possible one that limits visual disruption. Tanks are designed for at-grade access covers.
Where can I find structural drawings and state approvals?
Structural drawings for every model are available in PDF and CAD, alongside the residential design manual, electrical layouts, control panel options, and current Rhode Island, Massachusetts, and NSF certifications.
Owning a system
How much electricity does the system use?
Consumption is limited to the external blower and varies by model. A CE5 or CE7 draws 1.2 kWh per day, a CE10 or CEN7 draws 1.7, and a CEN10 draws 2.7.
What happens during a power outage?
The blower stops running. Wastewater still passes through the system and will not back up in the house unless a separate pump station has been installed, in which case power needs to be restored to keep it flowing.
After roughly 24 hours without power, treatment quality may begin to diminish.
What should I do if the alarm sounds?
Push the toggle switch to Silence and contact your service provider. Two events trigger the alarm: high water in the tank, which is rare and usually points to groundwater infiltration or a pump station fault, or a blower fault where air pressure to the system drops.
The red beacon stays lit while the system is silenced, until the controller is reset to Normal. Some causes can be diagnosed over the phone — a blocked air intake, for instance — and others need a technician on site.
How often does the system need to be serviced?
FujiClean specifies inspection and service every six months by a trained, certified provider, with four visits within the first two years after installation. Requirements after the initial two-year period vary by state.
Is there any odor from the system?
There may be noticeable odor during the first few weeks of operation, which should stop once the bacteria establish themselves. Persistent odor is addressed during service — seeding material can be added to the anaerobic and aeration chambers, or the recirculation rate adjusted.
The blower is making an unusual noise. Is that normal?
Normal blower operation is quiet. A loud or rattling noise usually means the blower is touching its housing or has slipped off its base platform. Contact your service provider.
Answers on this page are based on FujiClean USA's owner's manual for residential systems and design specification table.
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