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Otterbine Barebo Inc.

UNIT ASSEMBLY
READ THE INSTRUCTIONS: Improper assembly may result in damage to the unit.

NOTES:
*Genesis Pump Chamber; The Float MUST be mounted before the Genesis Throat Assembly (Shown on page 20).
(The unit will be received with the pumping chamber already mounted)

*5HP "Open Throat” Units (Sunburst, Gemini, Saturn); If applicable, the Supplemental Float must be mounted to
the Main Float before installing on Unit (See Below).

A. Supplemental Float Assembly

*If the Supplemental Float is already mounted to the Main Float, continue with main float assembly below.
1. Place Main Float top face down.

2. Place the Supplemental Float on the Main Float as shown in the photo below.

3. Ty-Rap the floats together in four places (1 in each pocket).

4. Continue mounting Main Float.

B. Main Float Assembly

1. Stand the unit upright and place the float onto it so the holes in the float line up with the holes in the mounting brackets.
2. Place a fender washer onto a hex bolt and insert into one of the four holes in the float making sure it also goes through
the hole in the steel mounting bracket on the unit. Repeat this for the three remaining holes.

3. Place a flat washer and a nylon locknut onto each of the four hex bolts. Tighten each nylon locknut.

CAUTION: Do not over tighten lock nuts, damage may occur to the float and/or pump chamber.

Fasten supplemental Float w/ Ty-Raps

Parts List
ITEM DESCRIPTION PART NUMBER | QTY
1 |Concept 3 Float 42-0018 1
Float Mounting Hardware Kit 12-0071 1
(BELOW)
2 _|M8x45 S/S Hex Bolt 22-0022 5
3 M8 Fender Washer 28-0008 5
4 _1M8 Flat Washer 28-0018 5
§ {M8 Nylon Lock Nut 26-0007 5
6 iNylon Tie (NOT SHOWN) GPS008 3

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Otterbine Barebo Inc.

C. Mounting the Stabilizers (Comet Spray Pattern Only)

1. Mount each of the four stabilizer plates to the top side of a bracket using a hex bolt, a fender washer, and a nylon
locknut as shown below.

2. Mount each of the four stabilizer plate assemblies from Step C1 to the top side of an outer hole in the float using an
eyebolt, a fender washer, and a nylon locknut as shown. Do not over tighten. Damage may occur to the float.

parts tist
ITEM) DESCRIPTION | PART NUMBER | QTY |
Comet Stabilizer Plates Kit

1 Stabilizer Bracket 4
2 Stabilizer Plate oe AL!
3 5/16-18x1-3/8" S/S Eyebolt _ | 4
4 5/16-18x3/4" S/SHexBolt =—-s«s§—s«:106-302 4!
5 5/16-18S/SNylonLockNut | = GP1208 | 8
6 5/16" Fender Washer 28-0008 =| 8

D. Screen Installation

Debris Screens help to prevent clogging of the aerator and
are available for all Otterbine aerators.

1. Place the unit upside down on blocks so the pump chamber
does not get damaged.

2. Pull screen over motor unit until it reaches the lip on the
float.

3. Make sure the cable/s are running through the bushing in
the screen.

4. Fasten the screen to the lip on the float with the washers
and screws provided so they are evenly spaced around the
diameter.

Parts List
ITEM DESCRIPTION , a PART NUMBER QTY |
1/4" Screen Kit / 12-0075 18
1/2" Screen Kit 12-0076 Aj
1 C3 Screen ; 1 |
1/4" 15-0022 !
1/2" 15-0023 i
2 5/S Sheet Metal Screw 6P2803B a)
3. 1" Fender Washer 800-011 9

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8 75-0073 Rev 08 60Hz Concept 3 1-800-AER8TER

Otterbine Barebo Inc.

PHYSICAL INSTALLATION
WARNING: DISCONNECT POWER BEFORE INSTALLING, REMOVING, OR SERVICING UNIT

Concept 3 Otterbine aerators require a minimum 30"/75cm (40"°/100cm w! lights) of water depth.
A. Attach your Otterbine power
cable to the aerator.

1. Align the keyway on the cable pigtail
connector to the key on the aerator
bulkhead connector and plug together.
Thread the nut onto the bulkhead,

hand tighten only, do not use tools on
the pigtail connector nut.

Over tightening may cause the
connector to fracture and possibly
cause an electrical short circuit.

2. 5HP, 230V, 1 Phase units have a 3
pin bulkhead connector and a 3 pin
pigtail connector on the power cable.
All other ratings use 4 pin connectors.
3. A small amount of silicon compound has been factory applied to the female end of the aerator connector. The
compound is necessary to make a waterproof seal between the two connectors. DO NOT REMOVE COMPOUND! When
servicing the aerator re-apply compound. (Otterbine P/N: 48-0001).

4. Install the cable strain relief device. Pass the wire hoop from the strain relief through one of the holes in the float or
around the float bracket. Reattach wire hoop to strain relief (see above).

5. For additional protection fasten the power cable, after the strain relief, to a float hole using the cable ties provided.

“PIGTAN, CONNECTOR
BULKHEAD CONNECTOR

B. Pre-Startup Checks (To be performed by a qualified technician)

1. Factory connections may loosen during shipping. Verify tightness of ali screw terminal connections before energizing.

2. Apply power to the PCC. Verify the incoming voltage is correct at the input terminals and matches the nameplate rating

of the aerator. For 115V & 230V Single Phase & Three Phase Units: The voltage between L1 on the input terminal
block and the neutral terminal must measure a nominal 120V.

3. Allowing the main door to be open and the swing panel door closed follow GFCI instructions on page 10 to reset

aerator GFCI. Turn on disconnect and proceed.

4. With the aerator unit on the shore check for correct motor rotation. Briefly “bump” the M-O-A switch (Shown on Page 10) to
“MAN?” while observing the motor shaft rotation (turn on only long enough to establish operation and proper direction of
rotation). Aerator Shaft rotation MUST BE CCW looking at the top/impeller end of the unit.

ITURN OFF DISCONNECT BEFORE PROCEEDING!

C. Fasten Mooring Lines and Launch

1. Mooring using stakes: Shore mounted stakes provides the easiest access to the aerator. Use stainless steel and/or
brass hardware. Otterbine recommends using 1/4"(0.63cm) or 1/2"(1.25cm) polypropylene rope or stainless steel cable
for mooring lines. At the mooring points use a wooden or metal stake or duck bill type earth anchors. Earth anchors allow
the mooring lines to be hidden beneath the water surface. Drive the mooring stakes securely into the ground at the edge
of the pond or place earth anchors close to the shore in the water. Fasten the mooring lines to opposite outer holes in the
aerator float. Launch the aerator into the water, pull into the chosen location and fasten the lines to the stakes allowing
slack for the aerator to twist up to 1/4 turn. The slack in the lines allows for movement during start up, fluctuations in the
water level and wave action. Proceed to System Startup.

2. Mooring using Anchors: Use stainless steel and/or brass hardware. Otterbine recommends using 1/4"(0.63cm) or
1/2"(1.25cm) polypropylene rope or stainless steel cable for anchoring lines, use two 60 - 80 Ib. (27 - 36 kilo) weights for
anchors and a boat may be needed. Fasten the mooring lines to opposite outer holes in the float. Launch the aerator
floating upside down (motor housing facing up). With the lines attached drop the anchors into the water at the
predetermined locations. Adjust the lines to allow slack for the aerator up to 1/4 turn twist. The slack in the lines allows for
movement during start up, fluctuations in the water level and wave action.

USE TWO (2) MOORING LINES we
STAKE
Ld

ELECTRICAL CABLE
MUST NOT BE TIGHT

LEAVE SLACK
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1-800-AER8TER 75-0073 Rev 08 60Hz Concept 3 9

Otterbine Barebo Inc.

SYSTEM STARTUP

DO NOT ALLOW THE AERATOR TO OPERATE “DRY” OUT OF THE WATER

IMPORTANT: Otterbine aerators are designed to run in a Counterclockwise direction facing the top impeller end.
Current unbalance for three phase systems shall not exceed 5%.
IMPORTANT: Aérateurs Otterbine sont concus pour fonctionner dans le sens antihoraire regardant I'extrémité
supérieure de la turbine. Courant de déséquilibre pour les trois systémes de la phase ne doit pas dépasser 5%

A. User Control Functions
1. Disconnect Switch

DISCONNECT OFF DISCONNECT ON DISCONNECT TRIPPED
Removes Power to the Aerator for Power Applied, Mode of Indicates a Ground Fault
Maintenance/Servicing/Repair, Operation Now Dependent on the MotorMWiring Short Circuit
Timers are not powered Position of MOA Switch, Or Motor Current Overload
(Time of Day Needs to be Reset) Timers are Operating

M-O-A IN OFF M-O-A IN AUTO M-O-A IN
Aerator & Lighting Allows Automatic MANUAL
Will Not Function, Control of Aerator Turns on Aerator,

Timers are & Lighting by Bypasses Timer
Powered and Timers & Other & Non-Critical
Operating, Control Options Control Functions
GFCl’s may be
Reset

3. GFCI (Ground Fault Circuit Interrupter) operation.

Enable Aerator GFCI first:

a. Power must first be applied to PCC.

b. Turn M-O-A switch to the off (center) position.

c. Press the RESET (ON) button, the green light will come on.
d. Turn disconnect switch clockwise to on (vertical).

CAUTION — UNIT WILL START IF M-O-A IS NOT SET TO OFF.

Enable Lighting GFCI:
a. With power to the PCC and the disconnect switch on. Press the reset button. AERATOR GFCIl

When loss of power to the PCC occurs the aerator will not re-start
automatically when power is restored and the aerator GFCI
will need to be reset.

Test all GFCI’s every 6 months by pressing the TEST (OFF) button.

When testing the aerator GFCI the GREEN light should be on, press “TEST”,
the red light should turn on, the motor controller should trip and the disconnect
handle should be off (horizontal at swing panel).

LIGHTING GFCl

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10 75-0073 Rev 08 60Hz Concept 3 1-800-AER8TER

Otterbine Barebo Inc.

Ti ti TIME OF DAY ARROW.
4. Timer operation. TRIP PINS

a. Start with all trip pins towards the center of the timer dial.

b. Push out from the center all trip pins that are between the times the aerator or lighting is
to operate.

c. Turn the outer dial clockwise to align the time of day to the stationary arrow positioned at
“9 o'clock”. Close the panel and turn the main disconnect on. When the main disconnect is
off or in the case of power failure the timer/s will not operate and the time of day will need to
be reset.

d. Timer control of the unit and lighting is enabled when in AUTO.

B. Energizing the Unit (To be performed by a qualified technician)
1. Single Phase Units: Motor rotation is factory determined and not field adjustable.
2. Three Phase Units: Verify correct motor rotation (Counter Clockwise looking at the top/impeller end of the unit). Check
current readings on each phase. Verify three phase operating currents are balanced within 5%.
To calculate the percent of current unbalance:
Determine the Average Current:
a. Measure each of the three phase currents
b. Add the three phase amperage values together.
c. Divide the sum by three.
d. This is the average current value.
Determine Current Unbalance:
a. Select the phase current with the greatest difference from the average (calculated above).
b. Determine the difference between this phase current and the average current value.
c. Divide the difference by the average.
d. Multiply the result by 100 to determine percent of unbalance.
3. Use connection diagram 1, 2 or 3 at right which results in the
lowest current unbalance. Roll the motor cable leads on the AS 2 ‘3 us 2 eB ci 2
[+ L Lt | | Lt t 4
- TL T - T
T: T

aerator output terminal block in the same direction to avoid t L |
motor reversal. tT
if the current unbalance is not corrected by rolling leads, locate sh ee Le 3 Ui 22 3M
the source of the unbalance and correct it.
a. If the phase farthest from the average stays on the same
AERATOR AERATOR AERATOR
is the power source.

power lead after being moved the primary cause of unbalance

b. If the phase farthest from the average moves on each of the

connections with a particular motor lead, then the primary DIAGRAM 1 DIAGRAM 2 DIAGRAM 3
cause of unbalance is the "motor side" of the circuit.

Consider: damaged cable, leaking splice, poor connection, or a faulty motor as possible causes.

4. Once the unit is operational record the operating voltage, amperage, power control center serial number, power cable
length and cable gauge on the label inside the power control panel.

MAINTENANCE
For Warranty Consideration Work Must Be Performed By an Authorized Service Facility
A. Keep the pumping chamber components and screen free of debris. Damage can occur to a clogged aerator.
B. Once a year, disconnect the unit from the power source and physicaily inspect the aerator, fioat and electrical cable.
Visible damage to the motor unit or cable should be repaired to avoid safety hazards and/or potential failure.
C. Every three years, an oil change using “Otterbine Oil” is recommended to keep your aerator operating smoothly.

When a unit is properly cared for, it will give you years of trouble free service.

For Service, Repairs or Parts, Contact Your Local Otterbine Distributor
or
Call Otterbine Directly at 1-800-237-8837.

WINTERIZATION

Damage caused to the motor due to freezing will not be covered under warranty
In locations with extended periods of freezing temperatures the aerator may become frozen into the water possibly
causing damage. Otterbine recommends the following Concept 3 units be removed from the water during freezing
temperatures: ROCKET, PHOENIX, TRI-STAR, CONSTELLATION, COMET, GENESIS, EQUINOX, and OMEGA.
The GEMINI, SATURN, and SUNBURST pump higher volumes of water which helps to keep the water around the aerator
from freezing. 24 hour a day operation will further decrease the opportunity for the unit to freeze in, although during
periods of extremely cold temperatures this will not prevent the water from freezing.

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1-800-AER8TER 75-0073 Rev 08 60Hz Concept 3 11

THE CITY OF NASHUA “The Cate City

Financtal Services

Purchasing Department

June 13, 2019
Memo #19-162

TO: MAYOR DONCHESS
FINANCE COMMITTEE

SUBJECT: CONTRACT FOR PAVEMENT MANAGEMENT SUPPORT SERVICE (VALUE: $28,900)
DEPARTMENT: 160 ADMIN/ENGINEERING; FUND: BOND

Please see the attached communication from Stephen Dookran, P.E., City Engineer, dated March 28,
2019 for information related to this purchase.

§ 5-83. Professional services. In the purchase of accounting, architectural, auditing, engineering, legal,
medical and ambulance services and purchases of independent professional consultant services for
personnel, data processing, actuarial, planning, management and other comparable purchases
competitive bidding shall not be required. Competitive bidding is required in the procurement of insurance
agents and consultants.

The City Engineer, Board of Public Works (March 28, 2019 meeting) and the Purchasing Department

recommend the award of this contract in an amount of $28,900 to Stantec Consulting Services, of
Burlington, MA.

Y Dan Kooken
Purchasing Manager

Ce: S Dookran L Fauteux

229 Main Street e Nashua, New Hampshire 03061 e Phone (603) 589-3330 « Fax (603) 589-3233 |

AGREEMENT FOR PROFESSIONAL SERVICES
BETWEEN
VANASSE HANGEN BRUSTLIN, INC.
AND
THE CITY OF NASHUA, NEW HAMPSHIRE

DOWNTOWN RIVERFRONT PROJECT
December 30, 2021

The following expands services under the existing agreement between the City of Nashua and
Vanasse Hangen Brustlin, inc. (VHB) for the Nashua Downtown Riverfront Project dated
12/12/2019. This agreement is subject to the terms and conditions of the original contract.

SCOPE OF SERVICES

This agreement includes the following scope of work.

ENVIRONMENTAL ANALYSIS AND PERMITTING

The project will require work below the top of bank of the Nashua River, which would trigger a
Prime Wetland review by the NH Department of Environmental Services (NHDES} Wetlands
Bureau under RSA 482-A. Additionally, any structure or fill below ordinary high water would
require authorization by the US Army Corps of Engineers under Section 404 of the Clean Water
Act. The Corps permit will, in turn, trigger the need to demonstrate compliance with Section 106
of the National Historic Preservation Act. We note that the Nashua River is subject to an urban
exemption from the NHDES Shoreland Program under RSA 483-B. To expedite design and
construction, it is likely that the project would be constructed in two to three phases:

e Project components that can be constructed entirely outside of the jurisdiction of the
NHDES, Army Corps, and NHDHR. These will likely include the Cotton Transfer Bridge
ADA ramp, the redevelopment of Bicentennial Park, redevelopment of the driveway
behind the Clocktower apartment building, portions of the multiuse path along the
south side of the Nashua River from Main Street to Temple Street, and possibly other
smaller components that do not impact the resource area.

¢ Boardwalks, the New Pedestrian Bridge across the Nashua River, and trail improvements
resulting in work below the top of bank requiring temporary and permanent impacts
(such as piers) in the bed and banks of the Nashua River.

KE. Meticr:

Attachment:

Discussion:

City of Nashua, Public Werks Division

Board of Public Works Meeting Date: March 28, 2019

Stephen Dookran, P.E., City Engineer
Engineering Department

Pavernent Management Support Service

To approve the engineering contract with Stantec Consulting Services, inc. of
Burlington, MA in an amount of $28,900. Department: 160 Admin/Engineering;
Fund: Bond; Activity: Paving.

3-Year Optional Pavement Management Support Service Proposal

The City has been using Stantec Consulting Services, Inc. since 2016 to provide
assisiance in evaluating the pavement condition of the 300 mile road network and
to make recommendation on rehabilitation and preservation methods. Protecting
the City’s Pavement Management system investment with providing system
maintenance services to maintain the City’s pavement management database
system. Using their expertise, Stantec has provided assistance in developing the
necessary protocols for preventative maintenance, their costs and decision trees
when selecting a prioritized list of roadways to pave.

in the Summer/Fall of 2017, the pavement condition of the southern road network
of City of Nashua was surveyed and evaluated. In the Summer/Fall of 2018, the
pavement condition of the northern road network was surveyed and evaluated.
Stantec has recommended that one-third of the network needed to be updated
every year.

Stantec wiil annuaily re-survey 33% of the City’s roadway network,
approximately 101 centerlines miles each year to update the pavement surface
condition (PCD) ratings using CartéGraph’s PAVEMENT view® Plus software.

This contract is for updating the road network in the first-third of the next three
yeaz proposal at a cost of $28,900.

Sieniec Consulling Services ine,
5 Burlingion Woods Drive Suite 210, Burlington MA 01803-4571

February 22, 2019

Stephen Dookran, P.E.
City Engineer

9 Riverside Street
Nashua, NH 03042

Reference: 3-Year Optional Pavernen! Managemen! Support Services Propesel

Dear Mr. Dookran:

Per your request, Stantec Consulting Services, Inc. (Stantec) has prepared the following
Pavement Management Services Proposal to ensure and proteci the City’s municipal
pavement management system investment with providing system maintenance services
to maintain the City’s pavement management database system.

We hereby propose to maintain the City’s Cartegraph pavement management system
(PMS) in Cartegraph's Navigator, Stantec will update work history, conduct pavemeni
conditions surveys, and perform data modeling and analysis on behalf of the City.
Stantec will maintain the City’s pavement management database and provide exports
compatible with your GIS.

Below are specific work tasks proposed to support Nashua in continuing their pro-active
approach to managing its pavement assets. Ihe intent of these tasks will be to update
the City’s pavement management database on an annual basis by utilizing ongoing
asset facility distress surveys, conduct data analysis for future capital improvement
planning and monitor system-wide metrics on Nashua's roadways.

WORK TASKS:

Pavement Management Sysiem Upciale:

Stantec will annually re-survey 33% of the City’s roadway network, approximately
101 centerline miles each year to update the pavement surface condition (PCH)
ratings using CartéGraph’s PAVEMENTview@Plus software. No data will be
collected on indices other than pavement condition. For each pavement
segment, Stantec will capture a digital picture image and link to the database.

Stantec staff will enter and update new work history repair records for the past
construction season, update distress inspection records, and conduct modeling
and analysis of upcoming fiscal year roadway repair plan. This service includes
attendance at one (1} meeting at Nashua DPW, a written annual summary
describing Nashua’s pavement condition network and financial needs, and GIS
shapefile export.

City of Nashua, NH February 22, 2019
3-Year Optional Pavement Management Support Services Proposal Page 2

SCHEOULE:

Stantec will initiate the proposed work tasks immediately upon receipt of an
executed copy of this agreement/Notice to Proceed such that work tasks can be
performed as soon as possible. This project is expected to require approximately six
{6} months from start to completion of each annual update.

Task Expected Compietion
scnedule

Executed Contract Notice to Proceed March 2019

2019 Pavement Management System 33% Update October 2019

Optional 2020 Pavement Management System 33% Update _| October 2020

Optional 2021 Pavement Management System 33% Update | October 2021

FEE:
Our not to exceed fee to complete the proposed scope of services as defined
above is Twenty-Eight Thousand and Nine Hundred Dollars ($28,900). Should the
scope of services be expanded, Stantec will discuss the additional fee to accomplish
the additional scope and an amendment to this Agreement will be executed. The
proposed scope of services as defined above is broken down as follows:
1, 2019 Pavement Network-Level Undate Task: § 28,900
2. Opiional 2020 Pavement Network-Level Update Task: $ 30,100
3. Optional 2021 Pavement Network-Level Update Task: $ 33,600
INVOICES:

Stantec will invoice the City on a monthly basis during the performance of our
services, the amount of each invoice will be based on the percentage completion
for each work task at the time of work performance.

Enclosed are two {2} originals. Please indicate your acceptance of this proposal by signing
and dating in the spaces provided and returning one signed copy to Stantec.

Regaras,

STANTEC CONSULTING SERVICES INC.

A

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Williarn P. Scarpati Wiliam ®. tdeore, ?.£.
Senior Project Manager Senior Principal
Phone: (781) 221-1165 Phone: (603) 263-4654

wiliam.scarpati@stantec.com dill mMoore@stantec.com