Clarus Fusion Series 소유자 매뉴얼 - 페이지 11

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The recirculation flow is designed to be 2-4 times that of the

average design inflow. Table 5 indicates starting flow rates for

each unit. However, fine adjustments may be necessary to ensure

optimum performance.

The water level could get higher than the low water level (L.W.L.)

mark by as much as 2". When the water level is high, recirculation

flow rate will be higher than usual. Make sure that water level is

at the L.W.L. position so that an accurate recirculation flow rate

can be measured. Wait until the water level reaches the L.W.L.

position or manually make it reach this position by increasing the

effluent valve to 70-80%, then measure the recirculation flow rate

once this is achieved. If the effluent airlift pump is not transferring

water, water level should be in the L.W.L. position. Be sure to

set the effluent valve (white) back to the table 4 effluent valve

settings as found on page 10. Make sure there is no influent and

water level is at L.W.L. position, then take the recirculation flow

rate measurements.

Effluent Valve Settings:

1120 - 30%

1440 - 25%

1680 - 25%

2000 - 60%

2400 - 60%

Setting the flow rate:

• Adjust the flow using rates in Table 5.

• The flow rate is adjusted by rotating the gray recirculation valve

(2) and observing the flow at the pipe end.

• There are prescribed lines at the outlet of the recirculation pipe

to aid in approximating the correct flow.

Measuring the flow rate:

• The actual flow rates must be measured to verify flow after

adjustment of the valve and observation at the pipe end.

• Measure the time in seconds required to fill a 1 Liter (0.3

Gallons) container.

• Compare the time to value ranges in Table 5.

• If necessary, adjust the valve again and collect another

sample to verify the correct flow rates.

It is important not to set the flow rate too high

because it can cause excessive agitation within the first chamber

(Sedimentation Chamber).

This could result in poor performance.

Table 5 - Recirculation Flow Rates

Fusion

Model

1120

Recirculating Flow Rate (GPM)

0.9-2.1

Recirculating Flow Rate (sec/liter)

8-18

Suggested Valve Opening (%)

20-25

Figure 13 - Flow Measurement

*Effluent Valve

Model

Suggested Valve Setting (%)

RECIRCULATION FLOW ADJUSTMENT

1440

1680

2000

2400

1.3-2.6

1.5-3.2

1.8-3.7

2.1-4.5

6-12

5-11

4-9

20-25

30-35

15-20

When properly adjusted, the water

level should be near the standard

line marked at recirculation outlet.

Table 5 - Effluent Valve Setting

Effluent valve (white) is set at

shipping, which should not need

adjusted in most cases.

1120

1440-1680

2000-2400

• If the recirculation flow rate is excessively higher compared

with the value measured at the last inspection, this may indicate

that supplying pipe could be clogged. Clean the pipe following

instructions below.

• Recirculation airlift pump head has a clean out. An airlift flow

rate which is lower than usual, may indicate that bio-film has

been formed on the pipe. Remove a cap from the head and

clean the airlift pump with a brush and hose.

• If the recirculation flow rate is excessively small, the valve may

be clogged. Rotate the valve to 0% and 100% position several

times to flush.

• The recirculation pipe has a clean out. If excessive bio-film

and/or sludge remain on the inside of the pipe, clean it with a

brush and hose.

Cleaning the Aeration Pipe

If there are signs of clogging as described

below, apply air flushing, water flushing or

cleaning using a tool (e.g. pipe cleaner).

1. Uneven aeration cannot be solved even

after adjusting the valve. A bubble is not

generated thoroughly.

2. The recirculation flow is increased

abnormally although the recirculation valve

setting is the same as last inspection.

Air Flushing Procedure:

•

Close gray recirculation valve (2) all the way (0%).

•

Rotate blue aeration valve (1) back and forth from the

0% to the 100% position several times to flush.

•

Set valves (1) and (2) back to the appropriate positions.

(see page 10 Aeration Airflow Adjustment)

Water Flushing Procedure:

•

Make sure the blower is off.

•

Close valve (2) all the way.

•

Connect a water line to the aeration line as shown in

Figure 16.

•

Gradually open the water faucet and introduce water

into the system.

•

Rotate valve (1) back and forth from 0% to the 100%

position several times to flush.

•

Turn off the water, remove the water line and reconnect

the air line to the blower.

•

Set valves (1) and (2) back to the appropriate positions.

Cleaning the Recirculation Line:

•

Make sure the blower is in the aeration mode. If not,

change the mode by pressing the Manual Backwash button.

•

Open the gray recirculation valve (2) to 100%.

•

Flush water through the recirculation line for several seconds.

•

Turn off the recirculation by rotating the gray valve (2) to 0%.

4-8

•

Make sure the blower is off. Allow the system to relax for a

few seconds.

•

Repeat this cleaning method three times. A hose or brush

can also be used to clean the recirculation line. See Figure 15.

•

Reset the gray valve (2) to its original position.

Figure 15

Foam Formation

Make sure there is not an excess amount of foam on the

surface.

If excessive foam is present it may indicate high

detergent usage. Meet with owners to inform and educate them

concerning excessive use.

Abnormal Water Level

If the water level exceeds the partition wall, clean the plastic

cage first with a brush, then check for possible clogging in the

filter media section. Clogs may be cleared by using a manual

backwash tool. The manual backwash tool may also be used to

eliminate a clog in the anaerobic chamber media as well.

Figure 14 - Recirculation

Pipe Clean Out

BRUSH