1.00 General These specifications provide a single source
responsibility for the manufacture, testing, and warranty of a prefabricated,
skid-mounted, fully automatic pump system for irrigation.
The pump system shall conform to the following specifications in all respects. This specification covers minimum requirements only. It is the responsibility of the successful vendor to provide all necessary appurtenances that are required for a reliable, automatic pump system. The manufacturer shall supply documentation to include a general layout drawing, electrical power schematic, and control schematic as part of the owner’s manual.
1.10 Manufacturer The pump system shall be manufactured by RainMaker, of Lexington, SC, USA 803-461-0599, or approved equal as determined by the purchaser prior to bid opening. Exact information such as model number, capacity, and special features shall be listed on the attached technical data sheet. For consideration of a proposed equal system, the contractor shall furnish the following data to the specifier at least 10 days prior to the date of the bid opening:
• A complete specification for the pumping system proposed as an equal.
• A statement of full conformance to the following specifications signed by an officer of the manufacturer.
• A general arrangement drawing showing overall dimensions and all piping layouts.
• Complete submittal data for all major equipment (pumps, motors, control
components, valves, and motor starters).
• An electrical schematic showing power wiring.
• Manufacturer’s electrical control panel UL file number.
• A copy of manufacturer’s certificate of insurance showing as a minimum, a general liability coverage of $1,000,000 and an excess liability coverage of $2,000,000.
If in the opinion of the purchaser, the data submitted shows the pump system to be an equal to the system specified, the bidding contractors shall be notified not less than 7 days prior to the bid opening.
Part 2 – Mechanical
2.00 Scope The pump system shall be completely skid-mounted and built by a
single manufacturer. All equipment
including, but not limited to, pumps, motors, valves, controls, and instrumentation
shall be mounted on a common steel base to form a complete, operating pump
system.
2.10 System Base The system base shall be designed and fabricated to provide proper structural support for all of the attached equipment. The base shall supply sufficient rigidity to withstand reasonable and competent transportation to the site, off-loading, installation, and operation. It shall be manufactured of injection molded high impact polypropylene.
2.20 Piping All pipe fittings shall be threaded standard weight galvanized malleable iron and all nipples shall be of brass construction.
2.30 Station
Enclosure If equipped, the station
shall be provided with an all aluminum enclosure that is removable and provides access to the pump, control panel,
and tank (if equipped). The enclosure
shall be manufactured from .063” aluminum material with a baked-on enamel
finish with a 1000-hour salt-spray rating.
2.40 Bolts All bolts used shall be chrome-plated for
corrosion prevention. The bolts shall
meet SAE-J249 Grade 5 and ASTM A449 specifications.
2.50 Pump The station shall utilize one (1) pump that
is a horizontal end suction centrifugal pump (standard or self-priming). The
pumping unit shall be designed and furnished in accordance with the latest
Hydraulic Institute specifications for centrifugal pumps.
The pump shall be of back pull-out design to allow access to
the impeller without disturbing the piping.
The casing/volute shall be manufactured of ASTM A48 class 25-35 cast
iron and precision machined. It shall
also feature at least one tapped and plugged drain connection.
The enclosed type impeller shall be constructed of ASTM A48
cast iron, ASTM B584 silicon bronze, or polycarbonate. The impeller diffuser shall be constructed
of cast iron.
The shaft sleeve shall be constructed of ASTM A581-582 Type
303 stainless steel.
The mechanical seal shall be constructed of 316 stainless
steel metal parts, a Buna N bellows, a ceramic stationary face, and a carbon
rotating face.
2.60 Motor Electric motors shall be NEMA JM, JP, or C
face ODP design with 200 degree C rated, high efficiency, moisture resistant
copper windings impregnated with high temperature polyester insulation
resin. Motors shall have locked-on
shaft end bearings and be rated for continuous duty.
2.70 Pressure
Gauge All gauges shall be silicon
filled to reduce wear due to vibration.
Accuracy shall be within 2%.
Range shall be at least 30% higher than the highest pressure attainable
from the pump at shutoff head conditions.
Gauge shall have a stainless steel back and bronze internals.
Part 3 – Electrical
3.00 Scope The electrical hardware shall provide
complete instrumentation and control that can start and stop the pump and
provide smooth, efficient, and reliable flow rates.
3.10
Control
Enclosure All controls shall be housed in a NEMA 3R
enclosure
with integral latches.
It shall be of a minimum 16-gauge.sheet steel construction. The housing and door shall have a
polyester-urethane powder coat over phosphatized surfaces. It shall have an external draw latch and
mounting brackets.
3.20 Skid
Wiring The manufacturer shall be
responsible for all wiring internal to the control panel and wiring between the
starter and the motor. The owner shall
be responsible for all other wiring.
3.30 Codes The control panel shall be a UL listed
industrial control panel. A UL label
shall be applied to the door of the control panel. A wiring diagram shall be included in the control panel. All wiring between the starter and the pump
shall be in accordance to National Electric Code.
Part 4 – Warranty
The manufacturer warrants for a period of one (1) year from
date of invoice equipment furnished will be of merchantable quality, free from
defects in material, workmanship, and design (except as where design is of or
by others) each as determined by RainMaker (hereafter referred to as
“Manufacturer”) in respect to generally recognized, applicable, and accepted
practices and procedures in the industry.
Components used by the Manufacturer but manufactured by others,
are warranted only to the extent of that manufacturer’s guarantee.
Liability under this warranty is limited to replacement or
repair of defects or correction of design at our factory in Lexington, South
Carolina, U. S. A., with transportation prepaid by buyer. Satisfaction of this warranty, consistent
with other provisions herein may at the option of the Manufacturer be performed
at the jobsite provided that the buyer shall pay all transportation, travel, and
associated labor expenses (i.e., removal or replacement of parts).
The Manufacturer uses
only high quality material. As with any
mechanical or electrical device, some preventative maintenance efforts are
required to enhance service life. The
customer is encouraged to establish a methodical maintenance service program to
avoid premature failure. The
Manufacturer offers support services and recommends their use. Because of varied conditions beyond the
control of the Manufacturer, this warranty does not cover damage under the
following conditions or environment unless otherwise specified in writing.
1.
Default of any
agreement with the Manufacturer.
2.
Misuse, abuse, or failure to conduct routine
maintenance.
3.
Handling any liquid
other than irrigation water.
4.
Exposure to
electrolysis, erosion, or abrasion.
5.
Presence of
destructive gaseous or chemical solutions.
6.
Overvoltage or
unprotected low voltage.
7.
Unprotected
electrical phase loss or phase reversal.
The foregoing
constitutes the Manufacturer’s sole warranty and has not nor does it make any
additional warranty, whether express or implied, with respect to the pumping
system or component. This warranty is
in lieu of all other warranties, expressed, implied, or statutory including
implied warranties of merchantability or fitness and hereby excludes certifications
or the like for equipment performance, use, or design with respect to any
standard, regulation, specification, or the like and extends only to buyer or
customer purchasing from the Manufacturer.
The Manufacturer
shall not be liable to purchaser or any other person for any liability, loss,
or damage caused or alleged to be caused directly or indirectly by the pumping
system. In no event shall the
Manufacturer be responsible for incidental, consequential, or act of God
damages nor shall Manufacturer’s liability for damages to purchaser or any
other person ever exceed the original factory purchase price.
Other than the
warranties contained herein, there are no warranties of merchantability or of
fitness for a particular purpose given by implication or expressly in
connection with the equipment sold.