J1_Specifications.doc

SECTION 011000 - SUMMARY

PART 1 - GENERAL

1.1 PROJECT INFORMATION

A. Project Identification: Lake Sherwood Lift Station Controls Replacement.

1. Project Location: Lake Sherwood Recreation Area.

B. The Work consists of: Removal and replacement of duplex pump station controls, control enclosures, float switches, and electrical conduit. Replace four 2 hp grinder pumps and provide a spare. (Pine Run pump 2, West Shore pump 2, Boat Rental pump 2 and Volunteer village pump 2)

1.2 WORK RESTRICTIONS

A. Contractor's Use of Premises: During construction, Contractor will have full use of site indicated. Contractor's use of premises is limited only by Owner's right to perform work and as follows:

1. Owner will occupy premises during construction. Clean up work areas and return to usable condition at the end of each work period.

2. Limits: Limit site disturbance, including earthwork and clearing of vegetation, 15 feet beyond surface walkways, patios, surface parking, and utilities; and 25 feet beyond constructed areas with permeable surfaces that require additional staging areas to limit compaction in the constructed areas.

3. Driveways, Walkways, and Entrances: Keep driveways and entrances serving premises clear and available to Owner's employees, campers and emergency vehicles at all times. Do not use these areas for parking or storage of materials while campground is open.

B. On-Site Work Hours: Limit work in the campground to normal business working hours of 7:30 a.m. to 6:00 p.m., Monday through Friday, unless otherwise indicated.

1. Weekend Hours: No weekend work, unless approved by the COR for compelling reasons.

2. Early Morning Hours: Noisy work shall occur between 8:00 am and 6:00 pm while the campground is open.

C. Nonsmoking Building: Smoking is not permitted within campground buildings or within 25 feet of entrances, or operable windows.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 011000

SECTION 11311 - GRINDER PUMPS

GENERAL

3.1 SECTION REQUIREMENTS

A. Submittals:

1. Product Data: For each type of product.

a. Include rated capacities, operating characteristics, electrical characteristics, furnished specialties, accessories, and motor horsepower.

3.2 EXTRA MATERIALS

A. Furnish 1 extra grinder pump.

PRODUCTS

3.3 PERFORMANCE REQUIREMENTS

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

3.4 GRINDER PUMPS

A. Pump Features

1. Provide sealed submersible grinder type pump designed for operation in raw sewage. Fabricate pump casing from cast iron. Use bronze or cast iron impeller of non-clog design. Use 2 mechanical seals of carbon and ceramic with an oil chamber between seals. Provide stainless steel shaft. Provide mating flange for automatic alignment and reconnection.

B. Grinder Unit

1. Provide grinder unit consisting of a primary grinder ring and impeller to macerate solids and secondary cutter to grind the macerated solids to fine particles. Fabricate all parts from hardened stainless steel. Make provision for grinder unit to be removed from the pump without disturbing pump, seals or motor

C. Motor :

1. The pump motor shall be an explosion-proof submersible type ranted for 2 Hp. Motor shall be single-phase230 volt 60 Hertz. Motor horsepower shall exceed pump horsepower at any point on pump operating curve. Motor shall have a watertight junction box for connection of power cord to motor leads. Power cord shall exit basin through sealed junction box.

2. Existing pumps are: Barnes SGVH2022L

EXECUTION

3.5 INSTALLATION

A. Install sewage pumps according to manufacturer’s installation instructions.

B. Remove and replace conduit sealing fittings for power wiring. New seal fittings shall be filled with Chico.

C. Replace four 2 hp grinder pumps and provide a spare. (Pine Run pump 2, West Shore pump 2, Boat Rental pump 2 and Volunteer village pump 2)

3.6 INSPECTION AND TESTING

A. After pumps are completely installed and operational, the pumps and controls shall be run to verify proper operation in the presence of the COR.

PART 4 - END OF SECTION 11311

SECTION 11313 – GRINDER PUMP CONTROLS REPLACEMENT

PART 5 - GENERAL

5.1 SUMMARY

A. This section specifies the construction, performance, and installation of remote mounted control panels and associated wiring for below grade duplex grinder pump sewage lift stations. Thirteen (13) duplex pump stations have 2 hp pumps. One duplex lift station has 3 hp pumps.

a) 11 lift stations have (2) Barnes XSGV2022L 2 hp grinder pumps - FLA 15A, 230V/1PH

b) 2 lift stations have (2) Flygt M3085 2hp grinder pumps - FLA 17A, 230V/1PH

c) 1 lift station has (2) Myers WG30-23 3 hp grinder pumps - FLA 30.5A, 230V/1PH

B. The components include the following:

1. Control panel and enclosure mounted on existing supports.

2. Conduit for control wiring between the lift station and new control panel.

PART 6 - PRODUCTS

6.1 LEVEL CONTROLS

A. At each lift station replace float switches with 4 non-mercury float type level switches designed for sewage service. Floats shall be installed to provide pump off, lead pump on, lag pump on, and highwater alarm levels as shown on the drawings. The float switches shall be suspended on a bracket to allow for adjustment or replacement without dewatering the basin. Controls shall be UL listed. Floats must be installed to eliminate interferences with piping rails or pumps. Cables shall be routed to the adjacent control panel. Level controls shall be provided on an intrinsically safe circuit with UL approved barrier. Control wiring shall be run through a separate conduit from the power wiring conduit. Junction boxes shall not be used in the lift station basin.

6.2 CONTROL PANEL

A. Provide a new UV resistant NEMA 4X door-in-door lockable enclosure for lift station controls. Panel shall have flashing red light with long life bulb in guarded enclosure. Internal of panel shall have hinged panel wit lights, switches, pushbuttons, gauges, etc. for operation of lift station.

B. Controls shall include single phase IEC rated combination starters for each pump with overload protection. Thermal magnetic circuit breakers shall be provided for motors and control circuit.

C. Controls shall include UL listed components to include:

1. An alternator to automatically switch the lead pump after each cycle.

2. An elapsed time meter (ETM) to totalize the time that each pump is in operation. 7 digit, non- resettable.

3. An event counter (CT) 6 digit, non-resettable, for each pump.

4. Anti-condensation heater.

5. A hand-off-auto selector for each pump.

6. A running light for each pump with push to test capability.

7. Surge arrestor to protect incoming power supply from electrical surges. Status light on unit.

8. High level in the wet well will activate an alarm horn and flashing red light on panel. The horn shall provide 95 db at 2 feet. Provide a rechargeable battery to power the horn and light in the event of a power failure. Provide circuitry to recharge the battery after power is restored. Provide a manual silence pushbutton for horn and light and manual test pushbutton.

9. Controls shall turn off both pumps when the low level is reached, turn on the lead pump at the second float, turn on the lag pump at the third float, and activate the alarm horn and light at the highest float.

10. Provide adjustable power failure pump restart timer for each pump. Timers will be adjustable from 5 seconds to 10 minutes.

11. All panel mounted lights, pushbuttons, and switches shall be 22 mm. They shall be rated NEMA 4X All lights shall be LED.

12. All front of panel devices shall be labeled with an engraved plastic plate. A legend plate identifying the lift station number or letter shall be provided.

13. Provide the following isolated contact closure signals, pre-wired to a labeled terminal strip:

a. High wet well level (relay from float)

b. Pump 1 run (auxiliary starter contact)

c. Pump 2 run (auxiliary starter contact)

d. Power failure (relay on 110Vac panel power)

14. A generator outlet in a lockable enclosure on the exterior of the control panel enclosure to power the lift station by portable generator in the event of a power failure.

D. Splices in wet well shall be made with materials identified for the purpose such as heat shrink tubing that forms a permanent flexible water proof barrier. No junction boxes shall be in the wet well.

E. Conduit shall be rigid steel conduit.

F. Conduit sealing fittings shall be galvanized steel UL approved for class 1, Div 1.

PART 7 - EXECUTION

7.1 INSTALLATION

A. Remove existing control panels, float switches, conduit for existing telemetry system and other items designated for removal. Cut off telemetry conduit and wires 6 inches below grade. Cap and mark ends as no longer in use.

B. Install new float switches to not interfere with power wiring, pipes or lift devices.

C. Remove and replace conduit sealing fittings for float switch control wiring. New seal fittings shall be filled with Chico.

D. Install control panels on existing mounting pedestal. Connect panels to new float switches and existing power wiring.

E. Test float switches and manual controls at all lift stations. Demonstrate operation of controls to Forest Service personnel.

END OF SECTION 11313