SERIES 150 ANSI FRAME MOUNTED REGENERATIVE TURBINE PUMPS PART I - GENERAL

SERIES 150 ANSI FRAME MOUNTED REGENERATIVE TURBINE PUMPS  PART I - GENERAL
SERIES 150
ANSI FRAME MOUNTED REGENERATIVE TURBINE PUMPS
PART I - GENERAL
1.01
DESCRIPTION
The Contractor shall furnish materials, equipment and labor to
furnish, install and test the pumping system complete with the pumps,
motors, mounting bases, piping, valves and appurtenances, as indicated
on the contract drawings and as herein specified.
1.02
INSTALLATION
The Contractor shall insure that the pumps and motors are
properly installed with no pipe strain transmitted to the pump casing.
1.03
RESPONSIBILITY
To assure a properly integrated and compatible system, all
equipment described in this section shall be furnished by the Pump
Manufacturer, who shall assume full responsibility for the proper
operation of the pumps and associated equipment.
1.04
SUPERVISION
The Contractor shall arrange for the Pump Manufacturer to
provide a factory-trained representative as required for the purpose of
supervising installation, start-up, final field acceptance testing, and
providing instruction to the owner's operating personnel in the proper
operation and maintenance of the equipment in this section.
1.05
REFERENCE STANDARDS
The work in this section is subject to the requirements of
applicable portions of the following standards:
Hydraulic Institute Standards
IEEE Standards
NEMA Standards
OSHA Rules and Regulations
PART II - PRODUCTS
2.01
GENERAL DESCRIPTION
The pump shall be horizontal frame-mounted regenerative turbine
pump conforming to ANSI B73.1 dimensions, Aurora Pump series 150
Apco-Chem or pre-approved equal. Pre-approval must be obtained a
minimum of ten days before bid date.
2.02
MATERIALS OF CONSTRUCTION
Casing.........................Ductile Iron (ASTM A395)
Impeller.......................Ductile Iron (ASTM A395)
Shaft..........................Steel (AISI C1045)
Channel Rings..................Cast Iron (ASTM A276)
Stuffing Box...................Ductile Iron (ASTM A395)
Power Frame....................Cast Iron (ASTM A48)
2.03
CASING
The casing shall be of the end suction design with flanged
suction and discharge openings. The discharge outlet shall be top
center-line. On Model 151 pumps the support feet shall be cast
integrally with the casing.
2.04
IMPELLER (S)
The impeller(s) shall be of the regenerative turbine or
periphery vane type, with the pumping vanes machined on both sides of
the impeller to balance hydraulic thrust. The impeller(s) shall be
keyed to the shaft, but not locked in place to allow the impeller(s) to
self-balance between the channel rings. Balancing holes shall be
machined into the impeller(s) to facilitate this floating action as
required.
2.05
SHAFT
The shaft shall be turned and polished, and have a keyway
machined on the inboard extension to accept a coupling half. The
outboard extension of the shaft shall be threaded to accept a shaft nut
to prevent excessive lateral shaft movement.
2.06
SHAFT SLEEVE
The shaft shall be fitted with a key driven sleeve which extends
completely through the stuffing box. The sleeve shall be held in place
by means of a washer and capscrew fastened to the inboard end of the
shaft.
2.07
CHANNEL RINGS
The channel rings shall have an individual water passageway
machined, and cleaned of all burrs, trimmings and irregularities. The
channel rings shall be pinned to prevent rotation.
2.08
STUFFING BOX
The stuffing box shall be adequately sized to accept either
packing or single, double or tandem mechanical seals, and the cover
shall have tapped and plugged openings for internal bypass or external
flushing as required.
2.09
MECHANICAL SEAL
Shaft sealing shall be accomplished by means of a mechanical
seal with a ceramic seat, carbon washer, TFE elastomers, and stainless
steel metal parts.
2.10
PACKING
Shaft sealing shall be accomplished by means of non-asbestos,
graphited Teflon fiber packing w/lantern ring.
2.11
GLAND
The stuffing box will be fitted with an adjustable gland to
securely hold the packing or mechanical seal in place. The gland shall
have tapped and plugged flush and drain connections.
2.12
POWER FRAME
The power frame shall house a single-row inboard ball bearing
and double-row outboard thrust bearing. Both bearings shall be
selected for a 2 year minimum life at maximum load. The outboard
bearing shall be locked in place by a retaining ring. The inboard
bearing shall not be locked in order to accommodate thermal expansion
of the shaft. A bearing cartridge end cap shall be provided on the
outboard side of the power frame to allow inspection and replacement of
the thrust bearing without the need for disassembling the power frame
housing. The power frame will have a sight-glass oiler and oil drain
connection. An adjustable support screw will be provided under the
inboard side to balance the power frame during dis-assembly.
2.13
COUPLING
A flexible spacer type coupling shall be provided to connect the
pump shaft to the motor shaft. The coupling shall be of an all metal
type with a flexible rubber insert. The entire rotating coupling
assembly shall be enclosed by a coupling guard.
2.14
BASEPLATE
The pump and the motor shall be mounted on a groutable formed
steel baseplate or driprim baseplate with integral drip channels
incorporated on each side. Each channel shall include an NPT drain
connection and plug. The base shall be sufficiently rigid to support
the pump and the motor without the use of additional supports or
members.
2.15
MOTOR
The motor shall be horizontal and in accordance with the NEMA
standards, and shall have the following characteristics:
Enclosure.........................TEFC, Chem Duty
Number of Phases..................Three
Cycles............................60 Hz
Voltage...........................230/460 volt
Speed.............................3600 RPM
Horsepower........................? hp
Each motor shall have a sufficient horsepower rating to operate
the pump at any point on the pump's head-capacity curve without
overloading the nameplate horsepower rating of the motor regardless of
service factor. The motor shall have a service factor of 1.15. The
service factor is reserved for variations in voltage and frequency.
PART III - PERFORMANCE
3.01
CONDITIONS OF SERVICE
The following conditions of service shall be strictly adhered
to:
Number of Units..................?
Type of Drive....................? (variable or
constant)
Discharge Size...................1.5 in, minimum
Suction Size.....................3 in, minimum
Design Capacity.................. US gpm
Design Head...................... ft
Efficiency at Design............. %, minimum
Rotative Speed...................3500 RPM, maximum
Shut-off Head....................1650 ft, minimum
Driver Horsepower................15.8 hp, minimum
NPSHR at Design.................. in, maximum
3.02
INSPECTION AND FACTORY TESTS
Each centrifugal pump furnished under these specifications shall
be tested at the factory to verify individual performance (VIP).
Certified copies of all test reports shall be submitted to the Engineer
for approval prior to shipment. Each unit shall be hydrostatically
tested in accordance with the Hydraulic Institute Standards.
3.03
INSTALLATION AND ACCEPTANCE TESTS
A.
The pumping units shall be installed in accordance with the
instructions of the manufacturer and as shown on the drawings by the
Contractor.
B.
Installation shall include furnishing the required oil and
grease for initial operation. The grades of oil and grease shall be in
accordance with the manufacturer's recommendations.
NOTES: Teflon is a registered trademark of E.I. DuPont.
Additional information is available from any Aurora Pump
authorized distributor.
Aurora Pump reserves the right to make revisions to its products
and their specifications without notice.
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