FujiClean CE Series, Manual

Page: 18 / 47

9. Set Recirculation
Control Valve. (gray)
(Recommended
frequency: Start-up and 1x
every 6 months)
The recirculation valve
(gray) should be set to its
default setting range
according to the table
below for ALL flows.
10. Check/Set Aeration Balance Control Valve (blue).
(Recommended frequency: Start-up and 1x every 6 months).
The default, normal setting for the Aeration Control Valve is 50%.
Visually observe the airflow rates on each side of the plant by
checking to see if bubbles are evenly distributed on both sides of
the aeration chamber. If there is an obvious discrepancy in
airflow between the two sides, adjust the Aeration Balance
Control Valve so that the airflow is equal. Important! If
adjustment of this valve is ineffective, then the likely cause of
uneven bubbles is usually a blockage in the aeration pipes and is
corrected with aeration pipe cleaning: See O&M Step # 14.
11. Check/Set Effluent Airlift Valve (white). (Recommended
frequency: Start-up and 1x every 6 months)
The Effluent Control Valve is initially set to 40% and there is
typically no need for it to be adjusted under standard conditions.
Important! Normal recirculation flow should be level with the top edge
of the airlift pumpback line cut-out spilling into Chamber 1. If backflow
is too high or too low, this typically indicates that service cleaning is
required (O&M Steps 12-16).
Model Default Setting
(%)
CE5 30% to 35%
CE7 25% to 30%
CE10 25% to 30%
CEN5 40% to 45%
CEN7 35% to 40%
CEN10 35% to 40%
At start-up, and for standard
operation, the Aeration
Balance Control Valve (blue)
should be set to 50%,
(Within the ranges shown in the table above, set at lower end for projected below average
hydraulic flows and at the higher end for higher average projected hydraulic flows.)
At start-up, and for standard operation, the
Recirculation Control Valve (gray) should be set
according to the table and instructions listed
under Procedure #9. NOTE: CEN systems have a
higher recirculation rate than CE systems.
At start-up, and for standard
operation, the Effluent Airlift Valve
(white) should be set to 40%.
CE Systems
CEN Systems
16