Clarus Fusion Series

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P R E L I M I N A RY

The recirculation ow is designed to be 1.2-1.8 times

that of the average design inow. Table 4 indicates

starting ow rates for each unit. However, ne

adjustments may be necessary to ensure optimum

performance.

Setting the flow rate:

• Adjust the ow using rates in Table 4.

• The ow rate is adjusted by rotating the gray

recirculation valve (2) and observing the ow at the

pipe end.

• There are prescribed lines at the outlet of the

recirculation pipe to aid in approximating the correct

ow.

Measuring the flow rate:

• The actual ow rates must be measured to verify

ow after adjustment of the valve and observation

at the pipe end.

• Measure the time in seconds required to ll a 1L

container.

• Compare the time to value ranges in Table 4.

• If necessary, adjust the valve again and collect

another sample to verify the correct ow rates.

In order to prevent plugging of the media in the

aeration chamber, the backwash cycle activates

at a preset schedule. If there is no backwash cycle

or if the backwash cycle is too short, the unit’s

performance will be adversely affected. Likewise, if

the backwash cycle is too long, performance will be

compromised.

The backwash cycle begins at 2:00 AM and lasts for

ve minutes. One hour later, another ve minute

backwash cycle occurs. The backwash initiation

time can be set for any time during a 24-hour period

to accommodate unusual water use patterns. The

goal is to set the time when there is no ow into the

unit.

The backwash cycle and sludge transfer from the

aeration chamber takes place in the same action.

Verify that the air ow is uniform across the

aeration chamber during a backwash cycle. If not,

adjust the red backwash valve (3) accordingly.

Setting the ow rate:

• On all HIBLOW HP series model blowers, press

the [MINUTE] button for at least 2 seconds to

switch to manual mode. The "aeration" and

"backwash" can be switched by the [MINUTE]

button.

• Set the backwash ow rate by adjusting the

gray sludge transfer valve (4). Use Table 5 to

determine the setting for each Fusion

model.

Measuring the ow rate:

• Measure the actual backwash ow rate at the

outlet of the sludge return pipe in the rst

chamber the same way the recirculation ow rate

is measured.

• Adjust the gray sludge transfer valve (4) if

necessary to obtain the proper ow.

• Be sure to press [SET] to return the unit back to auto

mode on HIBLOW Unit.

It is important not to set the ow rate too high

because it can cause excessive agitation within the rst chamber

(Sedimentation Chamber). This could result in poor performance.

RECIRCULATION FLOW ADJUSTMENT

BACKWASH FLOW ADJUSTMENT

Table 5 - Backwash Flow Rate Setting

Model Frequency ZF450 ZF800

Backwash ow

rate (sec/liter)

Twice/day 7-10 4-6

Valve open (%) Twice/day 50-55% 40-45%

Figure 15 - Flow

Controlling Valve

Figure 14 - Flow

Measurement

Model ZF450 ZF800

Recirculating ow rate (sec/liter) 29-45 14-22

Suggested Valve Opening 35-40% 30-35%

Table 4 - Recirculation Flow Rates

100

MCL

SUGGESTED

RANGE

RECIRCULATION OR BACKWASH PIPE

CONTAINER

G.L

WATER

TO TREATMENT UNIT

FAUCET

BACKFLOW PREVENTER

HOSE

BLOWER

CLAMP

EXISTING AIR LINE

BRUSH

100

MCL