SECTION 11200
WATER PUMPING SYSTEM
1.
GENERAL
1.1
WORK
INCLUDED
A.
The Work under this Section shall consist of furnishing all material, labor, and
equipment necessary to furnish and install a factory-assembled water pumping system,
complete and fully functional, as described in this Section and as shown on the Drawings.
B.
The system shall be an Aquavar Microprocessor Controlled Pumping System, Type ___
[AV2 / AV3].
C. The equipment shall be provided by authorized
distributor of the pump and components manufacturer that has been in business in Alaska
for over five years, that stocks a majority of its parts in Anchorage, and has technicians
that can respond in less then eight hours.
1.2
related
work specified elsewhere
A.
Section 09900: Painting and Protective Coatings
B.
Section 15060: Pipe and Fittings - General
C.
Section 15100: Valves
D.
Section 15400: Plumbing and Miscellaneous Piping Systems
1.3
quality
assurance
A.
Where specified, valves and operators must conform to all applicable AWWA and ANSI
standards.
B.
Provide manufacturer's certification that materials meet or exceed minimum
requirements as specified.
C.
All valves of the same type shall be by a single manufacturer.
D.
Installation shall meet the latest requirements of all local, State and Federal
codes.
E.
Provide products as specified. No substitutions unless pre-approved by the
engineer.
1.4
submittals
A.
General: Administrative, shop drawings, samples, quality control, and contract
closeout submittals, as applicable, shall conform to the requirements of Section 01300,
SUBMITTALS; in addition, provide the items below.
B.
Test Reports: Submit certified copies of startup reports.
C.
Catalog Data: Submit manufacturer's literature and illustrations.
D.
Shop Drawings:
1.
Dimensions
2.
Components
3.
Assembly details
4.
Materials
E.
Installation and Maintenance Instructions: Complete manufacturer's
instructions, including parts lists and recommended spare parts.
F.
Weight: Statement of net assembled weight.
1.5
product
delivery, storage, and handling
A.
In accordance with the requirements of Section 01500, CONSTRUCTION FACILITIES AND
TEMPORARY CONTROLS.
B.
Damages: Repair or replace to satisfaction of Engineer.
C.
Seal pipe ends to prevent entry of foreign matter.
D.
Store system and accessories in area protected from weather, moisture, or possible
damage.
E.
Transport and handle items with care to prevent interior or exterior damage.
2.
Materials and Equipment
2.1
SYSTEM
CAPACITY
A.
The unit shall be rated for a total system capacity of _____ gpm, and the
individual pumps in the system shall be sized and sequenced to deliver portions of the
total flow as demand varies.
B.
Operating Conditions:
1.
Jockey Pump:
a.
The Jockey Pump shall be capable of delivering a capacity of ____gpm at _____ TDH.
b.
The rated horsepower shall be ___ hp at ____ rpm.
2.
Lead / Lag Pumps:
a.
Each of the lead / lag pumps shall be capable of delivering a capacity of _____ gpm
at _____ TDH.
b.
The rated horsepower of each motor shall be ___ hp at ____ rpm.
3.
System Head: The pump station shall be provided with a minimum suction head of ____
feet, and deliver a constant station discharge pressure of _____ psig.
C.
The system manufacturer shall submit individual pump curves and system curves for
the Engineer's approval.
2.2
PIPING,
VALVES AND APPURTENANCES
A.
Piping:
1.
The unit shall be completely factory assembled and tested, and shall use _____
[material: stainless steel, black iron, galvanized iron, copper] for the discharge
manifold and interconnecting piping.
2.
Discharge and suction connections shall be [NPT / ANSI flanges].
B.
Valves:
1.
The discharge and suction lines of each pump shall be complete with ball valves,
such that individual pumps may be serviced while the system is in operation.
2.
The discharge of each pump shall be furnished with spring-loaded, resilient-seated
check valves.
C.
Appurtenances:
1.
Pressure Gauges: Liquid-filled – suction and discharge
2.
Pressure gauge shall be mounted on ball valves
2.3
HYDROPNEUMATIC
TANK
A.
The system shall be provided with a Well-X-Trol ________ [model number]
pre-pressurized hydropneumatic tank, ____-gallon total capacity.
B.
The hydropneumatic tank will be provided with a relief valve preset to 95 psig, if
pump discharge is capable of exceeding 120 psig.
2.4
TESTING
A.
The system and all pertinent components shall be cold water rated for a working
pressure of 100 psig.
2.5
PUMPS
A.
Description:
1.
Horizontal, closed-coupled, back pull-out design.
2.
Cast iron, bronze fitted [SS 304 or 316 construction may be substituted], with
stainless steel shaft sleeve and o-ring, casing seal (no gasket sealing shall be allowed),
replaceable front and back wear ring.
3.
Single mechanical seal spring-loaded, 316 stainless steel construction with
stationary and rotating element
4.
Elastomers appropriate for pumped liquid.
5.
Vertical Single or Multistage Design:
a.
Type 304 or 316 stainless steel construction.
b.
Materials of construction for components shall be equal to Goulds G & L SSV
series.
B.
Number of pumps: _____.
C.
Rating:
1.
Pump No. 1 shall be Model ______, rated at _____ gpm at _____ ft TDH, _____ hp.
2.
Pump No. 2 shall be Model ______, rated at _____ gpm at _____ ft TDH, _____ hp.
3.
Pump No. 3 shall be Model ______, rated at _____ gpm at _____ ft TDH, _____ hp.
D.
Motors:
1.
Pumps shall be driven by _____-phase, _____ Hz, _____-volt, _____ rpm electric
motors.
2.
All motors to be of standard C or TC design: no non-standard motors shall be
allowed.
3.
Motors shall be TEFC unless wall-mounted programmable controllers are used.
4.
Motors shall be standard closed-coupled, ball bearing, induction type.
5.
Motors shall be of NEMA design B, with normal starting torque and low starting
current, Class F insulation, rated for continuous duty, and a 1.15 service factor.
2.6
PROGRAMMABLE
CONTROLLER
A.
Scope:
1.
Furnish and install _____ [quantity] AQUAVAR variable frequency drive[s] and
controller[s], direct coupled to a standard-duty AC motor, as described herein, and fitted
with a motor over-temperature protection switch.
2.
Variable frequency drive[s] and controller[s] may be separately mounted with wall
mount version.
3.
Frequency inverter shall be cooled by the motor fan, or the cooling fan if the
wall-mount version is provided, and shall supply a sinus valuated pulse with modulated
output voltage.
4.
A high switching frequency of 8 KHz shall be provided to limit pump motor noise.
5.
Variable Frequency Drive:
a.
Drive shall be provided with short circuit and ground fault protection.
b.
Operation of drive shall be by controlled sinusoidal current synthesis, pulse width
modulation, and dynamic over current limitation.
c.
Frequency inverter shall be IGBT.
d.
Transmitter:
1)
Drive shall contain a built in power supply for the transmitter providing an output
signal of 4-20 mAdc.
2)
Transducer and all connections are to be supplied by manufacturer of water pumping
system.
B.
Programming:
1.
The factory-programmed programmable controller shall be capable of being
field-programmed.
2.
User Interface:
a.
Control panel shall contain a display and keyboard to set values or control
parameters.
b.
The two-lined display shall indicate set values, actual values, operating hours,
speed, control parameters, and fault signals in clear analog readings programmable with
three colored diodes to signal POWER ON, PUMP RUNNING, and FAULT.
c.
Setting of parameters may be completely or partially locked by password.
3.
Unit shall be capable of specific programming for:
a.
lack of suction pressure
b.
run-out and dead head protection
c.
constant pressure
d.
constant flow
e.
following a system curve
f.
multi-pump operation
4.
Program memory shall be retained when the device is powered down and without the
use of a battery.
5.
External Interface: The control unit shall contain terminals which can be connected
to external devices for:
a.
remote start and stop
b.
low water protection switch
c.
motor temperature protection switch
d.
pump run signal
e.
pump fault signal
f.
outgoing analog signal (either speed or actual value of control signal)
g.
pressure sensor (4-20 mAdc)
h.
computer interface (RS-485)
i.
motor connection
j.
power supply
6.
The microprocessor built into each control unit (drive head) shall be capable of
automatic start and stop of more than one pump (up to four) and can provide automatic
changeover and lead lag sequencing based on each unit's run time.
7.
Fault signals shall be stored for user retrieval, and the capability shall be
provided to program an automatic test run after periods of shutdown.
8.
Pressure Control:
a.
A special pressure control shall assure that the pump stops at zero demand.
b.
The discharge of the pump shall metered indirectly via the pump speed, thus
allowing pressure and/or differential pressure to be adjusted to flow following a set
system curve.
C.
The programmable controller shall be an Aquavar, as follows:
1.
Type: AV2 [ single-phase]
2.
Motor: _____ [up to 3] hp
3.
Motor Rating: 3-phase, 230 V, 0 to 60 Hz, TEFC, Class F
4.
Controller Power Supply: 1-phase, 230 V ±15%, 40 to 70
Hz
OR
1.
Type: AV3 [three-phase]
2.
Motor: _____ [4 to 30] hp
3.
Motor Rating: 3-phase, 460 V, 0 to 60 Hz, TEFC, Class F
4.
Controller Power Supply: 3-phase, 380 - 460 V ±10%, 40 to 70
Hz
D.
Pressure Transducer:
1.
Type 316L stainless steel body
2.
Viton gasket up to 360 psi (25 bar)
3.
Operating Temperature: -13 to 175 degrees F (-25 to 80 degrees C)
4.
4-20 mAdc signal
OR
D.
Differential Pressure Transducer:
1.
Type 316L stainless steel body
2.
Viton gasket
3.
Sensing Element: orifice plate
4.
Differential Pressure Measurement: 0 to 29 psi (0 to 2 bar)
E.
Display:
1.
Two-line LCD display
2.
ON, RUN and FAULT display lights
F.
Motor Speed: Variable from 0 to 1800 rpm [or 0 to 3600 rpm, depending on motor
rating]
G.
Ambient Conditions:
1.
Temperature: 41 to 105 degrees F (5 to 40 degrees C)
2.
Relative Humidity: Maximum 60% at 105 degrees F, or 90% at 68 degrees F, with 75%
average per year.
H.
Motor Requirement: Three-phase TEFC with Class F insulation in standard NEMA sizes,
rated for continuous duty with 1.15 service factor
I.
Design: Pump motor speed shall vary by an incorporated static frequency inverter
based on input from pressure [differential pressure] transducer.
J.
Enclosure: NEMA 4.
K.
Protection:
1.
Short circuit
2.
Ground fault
3.
Under-voltage
4.
Overheating
5.
Overload
6.
Over-voltage
7.
Motor over-temperature
8.
Low/no water [with external switch]
9.
Radio emission
L.
Control: Modified PID with two-point control.
M.
Input/Output:
Analog and SIO via RS-485
2.7
CONTROLS
A.
Input Line Reactor: Drives shall be provided with a separate AC line reactor with
1.5% impedance, located between disconnect and VFD mounted inside separate NEMA 1
enclosure.
B.
Each unit to have separate disconnect, NEMA 1 or 12.
2.8
SKID
A.
Materials of Construction: Carbon steel (stainless steel)
3.
EXECUTion
3.1
DELIVERY
A.
The entire unit shall be factory assembled, wired and tested prior to shipment.
3.2
PAINTING
A.
The unit shall be cleaned and painted with a high grade machinery enamel prior to
shipment.
B.
The manufacturer shall supply a quantity of the painting system for the Contractor
to apply field touch-ups.
C.
Finish coat shall be applied in the field in accordance with Section 09900 PAINTING
AND PROTECTIVE COATINGS.
3.3
INSTALLATION
A.
Installation shall be governed by National Electrical Code, Uniform Plumbing Code,
Uniform Mechanical Code, and good construction practice.
3.4
3.4
FACTORY
REPRESENTATIVE
A.
Contractor shall provide a factory authorized representative to approve
installation and to provide 8 (eight) hours of start-up and maintenance instruction to the
Owner’s personnel.
B.
Instruction shall be provided after all units have been field tested and accepted.
3.5
Warranty
A.
The manufacturer of the water pumping system shall warrant the system to be of
quality construction, free from defects in material and factory workmanship.
B.
The booster system shall be warranted for a period of one (1) year to be free from
defects and physical failures occurring in normal service, when installed in accordance
with the manufacturer’s recommendations.
C.
The pumps, motors, and apparatus shall be warranted for a period of one (1) year,
excepting only those items normally consumed in service.
D.
The system manufacturer shall be solely responsible for the booster system and all
related components, warranties, and guarantees by the suppliers of various components will
not be accepted.
END OF SECTION