Fusion, Operation and maintenance – Clarus Environmental Fusion Series Treatment Systems 2800/3200/3600/4000 User Manual

Page 12

The following steps are to be completed during each 6-Month

inspection. All information collected during the inspection is to be

recorded on the Maintenance and Service Report.

Begin the inspection by recording the date, arrival time, weather

conditions, purpose of the visit, water use, model number, serial number,

the presence or absence of a septic tank, and the system owner and

service provider information in the space provided on the report.

1. Are any odors present? Typically there is no odor with

the lids closed, if properly sealed. With lids removed, a

septic or sewer-like odor is indicative of poor treatment and

is common immediately after startup due to hydrogen sulfide

and other gases. An active system will have a musty, earthy

smell similar to wet peat moss.

2. Are any insects present? Typically, no insects are present

in the cold weather months. In warmer months, sewage flies

can be found inside risers, on the underside of lids, and larvae

can be found in the scum layer of the sedimentation chamber.

3. Is there evidence of high water? Typically indicated by

a water level above the black wall markings and above the

“0” graduation on the partition wall stickers. May also be

indicated by debris on partition walls.

4. Is there excess foam formation? Foam may be present

during an inspection. Brown foam indicates bacterial buildup

following startup. White foam is due to detergent use. Neither

is a problem if occurring intermittently. Detergent-based foam

will often be accompanied by low transparency readings.

5. Is there residue build-up on piping? Typically indicated

by gray or black residue (dried foam) on aeration chamber

piping.

6. Is there even and vigorous bubbling? Bubbles surfacing

in the aeration chamber should be even across the entire

chamber. If uneven, cleaning steps should resolve this issue.

PART A: Clean Water Storage Chamber

– collect samples

from the clean water storage chamber to be used for the following

analyses:
1. pH – Measures the hydrogen ion-concentration and is

determined with the use of the pH test strips included in the

Fusion Maintenance Kit. Dip a test strip into the water sample

for 1 second, remove, and read by comparing to the color chart

provided on the container. A pH = 7.0 is neutral. The range suitable

for biological activity is 6.5 to 7.5. Recurring results outside this

range should be investigated – check the water source for the

home or business, chemical use, etc.

2. NO

N – Determined with the use of the nitrite test strips

included in the Fusion Maintenance Kit. Dip a test strip into

the water sample for 1 second, remove, allow to react for 30

seconds and read by comparing to the color chart provided

on the container. Nitrite-nitrogen is an intermediate step in the

oxidation of ammonia to nitrate and the reduction of nitrate. 0

to 3 mg/L is common and 1mg/L is average. The presence of

nitrite is indicative of biological activity. The absence of nitrite

could be due to a young system or a recirculation rate that is

too high. To correct low nitrite readings in established systems,

decrease the recirculation rate.

3. Transparency – Measures the ability of the water to transmit light.

Using the ladle, fill the transparency tube with a water sample

collected from the clean water storage chamber. Looking down

through the water column, slowly drain the transparency tube

using the valve on the flexible hose until you can first distinguish

between the black and white colors on the secchi disk in the

bottom of the tube. When the secchi disk is visible, close the

valve and read the transparency (in centimeters) on the side.

Dirty water samples transmit less light and result in a lower

transparency. A transparency reading > 20 cm is preferred and

34 cm is average. Low transparency may be due to a lack of

biological activity as in a young system, a recirculation rate that

is too high, or a system influent high in detergent concentration.

To correct low transparency readings not caused by detergent,

decrease the recirculation rate. Detergent based problems may

require consultation with owner.

4. Scum – Very small amounts of scum may accumulate in the

GENERAL OBSERVATIONS

REQUIRED WATER QUALITY ANALYSES

Figure 17 - Inspection details.

FUSION

OPERATION AND MAINTENANCE

SK2801

INLET

3/4" AIRLINE ADAPTER

RECIRCULATION

1" AIRLINE ADAPTER

BACKWASH

2" RECIRCULATION

RETURN LINE

2" BACKWASH

RETURN LINE

OUTLET