Multi-Flo Assembly / Installation

Multi-Flo Assembly / Installation
WASTEWATER TREATMENT SYSTEMS
PROCEDURES FOR
ASSEMBLY AND INSTALLATION
A Division of Consolidated Treatment Systems, Inc.
1501 Commerce Center Drive
Franklin, OH 45005
Tel: 937-746-2727
Fax: 937-746-1446
www.multi-flo.com
MULTI-FLO TANK COMPONENTS
Fig. 1.1
ACCESS COVER
PRIMARY SENSOR ASSY
JUNCTION BOX
SURGE BOWL
SPRING RING RETAINER
AIR TUBING
OUTLET
INLET
UNION
FILTER
EXPANDER
AERATOR POWER
CORD
AIR INTAKE PIPE
AERATOR
TYPICAL INSTALLATION
(Cross Section)
Fig. 1.2
BUILDING
ALARM BOX
GRADE
2" minimum to
bottom of lid from
grade
POWER SOURCE
FOUNDATION
2
SEWER LINE
TO EFFLUENT
DISPOSAL SYSTEM
Rev: 11/21/02
MULTI-FLO
Procedures for
Assembly and Installation
Unless otherwise noted, the instructions within this manual may be used for all models
(FTB 0.5, FTB 0.6, FTB 0.75, FTB 1.0 and FTB 1.5) of the MULTI-FLO wastewater
treatment unit.
The installation must comply with state and local regulations
.
SECTION 1.0
SITE PREPARATION
1.10
LOCATION
1.11
An accurate, detailed site plan is essential for successful installation of
MULTI-FLO units. The site plan should show the locations and elevations of the
wastewater treatment unit and effluent disposal system. Check to make sure the
site plan accurately reflects the conditions actually existing at the site and that all
required set-backs (i.e., to property lines, wells, etc.) are being met.
1.20
GRADE AND GROUND CONTOUR
1.21
Position the wastewater treatment unit in accordance with the plan. Confirm the
accuracy of the elevations shown in the plan.
SURFACE WATER MUST NOT ENTER THE SYSTEM AROUND THE ACCESS
COVER OR FROM THE DISCHARGE PIPE.
1.30
COVER EXPOSURE
1.31
The access cover must be exposed at all times to permit the system to function
properly and to allow for routine maintenance. There should be a minimum of
two (2) inches between the bottom of the lid and the finished grade (refer to Fig.
1.2).
1.40
BUILDING SEWER LINE
1.41
Make sure that the sewer pipe from the building has the proper slope to meet the
inlet invert of the MULTI-FLO and maintain the grade requirements for the
exposure of the cover.
1.50
EXCAVATION PREPARATION
1.51
Mark off an area at least one foot larger than the dimensions of the MULTI-FLO
and maintain the grade requirements for the exposure of the cover.
1.60
EXCAVATION (refer to Fig. 1.3)
3
Rev: 11/21/02
1.61
Prepare the excavation. The opening should follow the area laid out in Section
1.51. Determine the required depth of the excavation based upon the elevation
of the invert of the inlet sewer line (B) or the elevation of the finished grade (D),
both of which should conform with the site plan. These dimensions are given for
each model in Figure 1.3. NOTE: If the distance from the finish grade elevation
to the bottom of the excavation exceeds the dimension (D) shown in Figure 1.3, a
riser will be required (refer to Section 2.40). If digging in soil containing large
rocks or clods of dirt, it may be necessary to remove an extra 6” to allow for
bedding material (refer to Item 1.63).
MULTI-FLO TANK DIMENSIONS
Fig. 1.3
A
MODEL
NUMBERS
FTB 0.5
FTB 0.6
FTB 0.75
FTB 1.0
FTB 1.5
D
B
C
A
B
C
D
=
=
=
=
A
63
71
71
78
135 X 63
DIMENSIONS
B
C
58
56
58
56
65
63
65
63
58
56
D
76
75
79
83
76
OUTSIDE DIAMETER
INLET INVERT FROM BOTTOM OF EXCAVATION
OUTLET INVERT FROM BOTTOM OF EXCAVATION
FINAL GRADE FROM BOTTOM OF EXCAVATION
1.62
Level the floor of the excavation.
1.63
If bedding material is required, place at least six inches of sand, pea gravel or
other similar, suitable granular material on the bottom and smooth out evenly. If
ground water is present, use pea gravel or class 2 river rock to build a base for
the system. In all cases, the bottom should be level and well compacted. Note:
Localized soil and groundwater conditions may require specialized
procedures to assure proper installation.
4
Rev: 11/21/02
SECTION 2.0
INSTALLATION OF THE TANK
2.10
PLACING THE WASTEWATER TREATMENT UNIT INTO THE EXCAVATION
(Refer to Fig. 2.1)
2.11
Rig the tank to lift. See unit specifications for actual weights. Except for the FTB
1.5, ropes can be attached to the inlet and outlet. Note: The FTB 1.5 has lifting
hooks that must be used.
2.12
Slowly lower the tank into the hole, setting it carefully on the bottom.
2.13 Position the unit, so that the inlet (higher four inch pipe) is aligned with the sewer
line from the building. (See Fig. 1.3)
BACKFILLING PROCEDURES
Fig. 2.1
ACCESS COVER
GRADE
INLET
PIPE
EARTH BACKFILL
OUTLET
PIPE
BASIN
SAND OR
SELECT FILL
6" CRUSHED STONE OR
SET ON UNDISTURBED
EARTH
5
UNDISTURBED EARTH
Rev: 11/21/02
2.20
LEVELING THE WASTEWATER TREATMENT UNIT
CAUTION: The system must be level. A tilted system will not work.
2.21
Place a level across the center tower in several directions. Adjust the tank until it
is level. Leveling can be accomplished by shifting the bedding materials.
Bedding materials must be evenly distributed to support the weight of the filled
tank. DO NOT USE WEDGES OR OTHER DEVICES TO LEVEL THE TANK.
2.22
An alternative to using a mechanical level is to plug the outlet pipe with a four
inch plastic pipe cap. Fill the area outside of the circular weir with water. As
noted in 2.21, adjust the unit until it is perfectly level.
2.30
FILLING THE TANK WITH WATER
CAUTION: To avoid damage from floatation always fill the tank.
2.31
Fill the tank with clean water. Do not fill with water from a pond, river or ground
water in the excavation because this water will contain silt or sediment.
2.32
While filling, check frequently to make certain that the tank remains level. If the
tank shifts or seems to settle unevenly, discontinue filling and make the
necessary corrections to level the tank.
2.33
When the water begins to flow over the weir, stop filling the tank.
2.40
BACKFILLING THE TANK (Fig. 2.1)
2.41
Once the tank has been leveled and has been filled with at least two (2) feet of
water, backfilling can begin.
2.42
Using sand, pea gravel or other selected fine material carefully begin backfilling
(by hand) until there is approximately 2-3’ of compacted fill around the tank.
2.43
After checking the tank to insure it is level, place the access lid on the tank and
carefully backfill to the bottom of the outlet pipe. Care should be taken with the
backfilling procedures to prevent damaging the tank with rocks or clods of dirt,
especially if the original soil is used for backfilling.
2.44
Glue and firmly insert the inlet and outlet sewer pipes (4” Sch. 40 PVC) into their
respective fittings. CAUTION: To prevent any damage to the inlet or outlet
pipes due to settling or backfilling, make sure that both the inlet and outlet
pipes are set on undisturbed or firmly packed fill material prior to final
backfilling.
2.45
Finish backfilling to a level approximately 2 inches below the access lid. When
landscaping is completed, the access lid should be at, or above, finished grade
level.
6
Rev: 11/21/02
2.46
If the final elevation of the MULTI-FLO is below grade so that surface water can
enter the access opening of the plant, (1) a dosing pump can be installed prior to
the MULTI-FLO; or (2) a riser (not exceeding 20”) can be provided on the
MULTI-FLO. CAUTION: The addition of a riser will make access for service
more difficult.
2.50
INSTALLATION OF FILTER BAGS AND EXPANDERS
2.51
Carefully place an expander into the bag and slide it to the bottom. Be careful
not to rip or tear the bag. Even the smallest opening will cause the unit to
malfunction.
2.52
Insert the closed end of the filter bag into one of the holes in the hanger plate.
2.53
Continue this process until all filters and expanders are installed. All holes in the
hanger plate must have a filter and an expander.
2.60
INSTALLATION OF SPRING FASTENERS
2.61
All filters and expanders must be installed.
2.62
Grasp the spring fastener. (See Fig. 2.2)
2.63
Squeeze the arms of the fastener together until it will slip into the filter bag up to
the grooves. (See Fig. 2.3)
2.64
Release the spring, so that the top of the groove in the fastener is on top of the
ring that is inside the filter. The bottom of the groove should be in contact with
the underside of the hanger plate. The fastener is now holding the filter to the
hanger plate. (See Fig. 2.4)
2.65
Place a second spring fastener in the filter at a right angle, so that it lies across
the first fastener.
2.66
Continue until each filter has two fasteners in place.
7
Rev: 11/21/02
SPRING FASTENERS INSTALLATION
Fig. 2.2
Fig. 2.3
Fig. 2.4
2.70
AERATOR ASSEMBLY AND INSTALLATION
2.71
Remove all parts of the aerator from the box. This should include: aerator, legs
(3), tee, 1/2” plug, 1/2” nipple, and the owner’s manual.
2.72
Screw the three (3) legs into the angular threaded holes in the bottom of the
aerator cross-shaped piece. Make sure the leg is screwed all the way into the
cross.
2.73
A plastic cap should be on the plain end of each leg.
2.74
Turn the aerator on its side and spin the impeller by hand several times. THIS
STEP IS IMPORTANT.
2.75
With the aerator in the position shown (See Fig. 2.5) assemble the plastic tee to
the nipple on the aerator.
2.76
Screw the one-half inch plug into the bottom of the tee.
2.77
Screw the threaded end of the air intake pipe into the top of the tee.
8
Rev: 11/21/02
AERATOR ASSEMBLY
Fig. 2.5
Foam Cap
(Caplug)
Air Tubing
Primary Sensor
Sensor Wires
Union
Plastic Tie
Power Cord
Air Pipe
Aerator
Tee
1/2" Plug
Impeller
2.78
Attach the sensor assembly (Fig. 2.6) with the union to the air intake pipe.
Tighten as much as possible by hand. NOTE: Be sure that the O ring seal is in
the union half of the assembly.
2.79
Tie the aerator power cord to the air intake pipe with the plastic ties. CAUTION:
Do not pull or stretch the power cord. To facilitate removal, a nylon rope or
chain can be attached to the lifting ring on the top of the aerator.
2.80
By grasping the air intake pipe, carefully lower the aerator assembly through the
center of the tank opening to the bottom. CAUTION: Be sure to keep the air
tubing from crimping which will prevent air flow.
9
Rev: 11/21/02
SENSOR ASSEMBLY
Fig. 2.6
Air Tubing
Power Cord
Sensor
Union
Air Intake
2.81
Air Tubing
Run the aerator power cord through the fittings as shown in figure 2.6 and into
the junction box. CAUTION: Use care when running the power cord through
the fittings. Damage to the cord will void the warranty.
SECTION 3.0
ELECTRICAL CONNECTIONS (ALARM AND AERATOR)
(Refer to specific sheet of direction for each model)
SECTION 4.0
START-UP PROCEDURES
4.10
CHECKING THE AERATOR
4.11
Once the aerator and alarm have been installed, and all electrical work is
completed, power should be supplied to the aerator and alarm.
4.12
Check the aerator to insure proper operation. If no air bubbles are observed
coming from the aerator, immediately disconnect the power source. Refer to
Items 1A, 1B, and 1C of the Trouble-Shooting Checklist for corrective action.
10
Rev: 11/21/02
4.20
CHECKING THE FILTERS
4.21
Once the aerator is running, check each filter to see if any air bubbles are
escaping under the filter ring. If so, remove the clips, re-adjust the filter and reinstall the clips. Some adjustment may be necessary to eliminate the bubbles.
4.30
CHECKING THE ALARM
4.31
With the power being supplied to the aerator and alarm, press the “test” button to
activate the alarm. Note: YOU MUST HOLD THE TEST BUTTON DOWN FOR
6-to-7 SECONDS BEFORE THE ALARM ACTIVATES.
4.32
Shut the power off to the aerator and check if the alarm is activated. Again,
allow 6-to-7 seconds for the alarm to sound.
4.33
If the alarm is not activated during these tests, refer to Items IIA and IIC of the
Trouble-Shooting Checklist for corrective action.
4.34
If the alarm activates after 10-15 minutes of operation, reverse the white and
black sensor wires in the alarm.
4.40
UNIT START-UP
4.41
Once the aerator and alarm have been checked and are operational, the unit is
ready to receive sewage flows.
4.42
Normally, it is not necessary to add any chemicals or enzymes to facilitate unit
start-up. It is helpful, however, to restrict the discharge of excessive amounts of
gray water from showers and laundry during the initial 6-to-8 weeks of use.
4.43
If the MULTI-FLO system exhibits a gray dishwater appearance in the aeration
chamber, or has a noticeable odor, contact the factory or the local authorized
representative for the proper procedure to follow to attain normal operation.
SECTION 5.0
USE OF A PRETREATMENT TANK (Fig. 5.1)
MULTI-FLO has been designed and certified to function without the use of pretreatment tank. However, installation of a pre-treatment tank, if used to address local
requirements or to reduce maintenance problems, will not adversely affect unit
performance if it is properly sized and installed.
If a pre-treatment tank is installed, the liquid capacity of the pre-tank should be
between 50-to-100 percent of the treatment capacity of the MULTI-FLO. Slightly larger
tanks can be used with the FTB 0.5 and FTB 0.6. Please refer to the MULTI-FLO
Design Guide for details.
11
Rev: 11/21/02
5.11
The use of a pre-tank may cause septic odors to escape from the MULTI-FLO
during periods of heavy usage (i.e., laundry). In these cases, a 4-inch Schedule
40 elbow can be installed on the inlet pipe to the MULTI-FLO. A 12-inch piece of
pipe should be added to extend below the surface of the water (refer to Fig. 5.1).
MULTI-FLO INLET DEVICE WHEN INSTALLED AFTER A PRE-TANK
Fig. 5.1
4” Sch. 40 Elbow
12” Extension
12
Rev: 11/21/02
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