Suggested Specification
Standard System
VFD
(Vertical Turbine Pumps without Tank)
Water Pressure Booster System
JOB NAME:
LOCATION:
CONSULTING ENGINEER:
DATE:
PART I. GENERAL
1.01 Summary
Furnish and install a prefabricated Standard model ________________ water pressure booster
system as designed and manufactured by SyncroFlo, Inc., Norcross, Georgia, phone number
(770) 447-4443, fax number (770) 447-0230, e-mail address: email@syncroflo.com.
1.02 References
A. American National Standards Institute (ANSI)
B. American Standard for Testing Materials (ASTM)
C. National Electric Code (NEC)
D. Underwriters Laboratory (UL) - Electrical Assemblies - UL 508
E. Occupational Safety and Health Administration (OSHA)
F. Food and Drug Administration (FDA)
G. National Fire Protection Association (NFPA) 70
1.03 System Description
The system shall be capable of automatically providing a controlled system pressure of _____
psig while at a flow rate from 0 to _____ GPM with a suction pressure of _____ psig minimum,
_____ psig maximum. Incoming power shall be 3 phase/60 cycle/ volts. Major components of
this SyncroFlo Standard system shall include vertical turbine pumps, vertical hollowshaft
motors, check valves, gauge board, drip-tight shutoff valves, pressure and flow sequencing, and
NEMA 1 control panel.
1.04 Submittals
A. Prior to Fabrication
Submit six copies to the Engineer for approval, including the following:
1. Certification that the manufacturer is a UL listed control panel manufacturer
2. Manufacturer's NRTL approval as a manufacturer of factory assembled pumping systems
meeting OSHA safety standards
3. Easily readable functional description of the proposed equipment
4. Sequence of operation
5. Electrical schematic showing internal and external wiring connections
6. Test facility location, flow capacity, and all standard measurements taken
7. Pump performance curves plotting flow, head, efficiency, and NPSH required
8. Panel face diagram showing location of components
9. List of job name, city, state, system type, model number, consulting engineer, and
contractor of the past 30 projects that used similar components
10. System data sheet listing all mechanical components and overall size
11. Control panel data sheeting listing major components and pressure switch settings
12. System warranty
13. Detail drawings or descriptions of all components listed in section 2.01
B. Prior to Final Acceptance
1. As-built drawings for all components and software listed above
2. Flow test results (X-Y plot)
1.05 Manufacturer's Qualifications
A. Equipment under this section shall be furnished by a single supplier.
B. The supplier shall have the sole responsibility for proper functioning of the system and
equipment supplied.
C. Equipment shall be products that the manufacturer regularly produces.
D. Manufacturer shall have in place a quality assurance program.
E. Manufacturer shall have thirty years manufacturing and pump system application experience.
F. Manufacturer shall have a facility capable of testing the specified system at design flow and
system pressure. Facility shall be capable of providing suction pressure throughout the specified
range.
1.06 Warranty
The SyncroFlo internal multistage pumping assemblies and pressure regulating valves shall be
guaranteed for one year from date of shipment against defective material and workmanship. The
motors shall also be guaranteed for one year from date of shipment against burnout from any
cause when equipped with the pumping system manufacturer's over-temperature protection and
maintained according to instructions.
The complete pumping system shall be guaranteed in writing by the manufacturer for a period of
one year from date of startup or eighteen months from shipment, whichever comes first, against
defects in design, materials, or construction. Warranties and guarantees by the suppliers of
various components in lieu of single-source responsibility by the manufacturer will not be
accepted.
1.07 Spare Parts
Ship the following spare parts with the system: 1 pint of touchup paint, spare control power
fuses, and spare light bulbs.
PART II. PRODUCTS
2.01 System Performance
A. Attributes
1. Normal Operation
The lead pump shall run continuously. Lag pumps shall be sequenced on and off by an insertiontype paddlewheel flow sensor. As a backup, lag pumps shall be sequenced on and off by the low
system pressure sensor.
Automatic sequencing shall include the following features:
1. Successive and 24-hour alternation of equal capacity pumps
2. Pump overlap during 24-hour alternation
3. Lag pump exerciser function
4. Sequential pumps starts and stops
5. Minimum run and stop delay timer for each pump
6. Field adjustable time delay for low system pressure start signals
2. Emergency Alarms and Control
Automatic alarm sequencing shall include the following features:
1. Sequence shifting that adjusts the pump sequence when any pump is disabled
2. Each pump shall have a temperature relief valve
3. Sequencing to reduce hydraulic or electric surges after power restoration or alarm reset
4. Provide pressure sensors for low system, high system, and low suction conditions to
activate the alarm system. All pumps shall stop and require manual reset.
B. Code Compliance
All packaged equipment shall be Nationally Recognized Testing Laboratory (NRTL) certified as
a packaged pumping system suitable for the intended use in accordance with OSHA Federal
Regulations and National Electric Code (NEC) Article 90-7. Safety certification label shall be
permanently attached to pump system.
C. Factory Prefabrication
The entire booster system shall be factory prefabricated on a structural channel or I-beam steel
stand with all interconnecting piping and wiring completed and operationally tested prior to
shipment. The assembled package shall also include lug type butterfly or full port ball valves for
isolating pumps. Suction and discharge headers shall be stainless steel. Header piping
connections shall be flanged. All discharge-side piping shall be rated for the specified maximum
suction pressure plus pump shutoff pressure. Tubing for pressure switches and gauges shall be
copper with brass isolation valves. The only field connections required will be to the suction and
discharge headers, and the power connections at the control panel.
D. Factory Test and Certification
The factory shall certify in writing that the water pressure booster system and its component
parts have undergone a complete operational electric and hydraulic flow test prior to shipment.
The test shall include a SYSTEM operating test from zero to 100% design flow and suction and
system pressure conditions. The certification shall include copies of the flow and pressure test
data as recorded on 11" x 17" X-Y plot. The system test may be witnessed by the owner,
architect, consulting engineer, or contractor by reporting intent to do so to the factory no later
than 2 weeks before expected system shipment.
2.02 Components
A. Pumps
The pumps shall be SyncroFlo constant speed multistage vertical turbine with stainless steel
shafts, water-lubricated bronze radial bearings, balanced cast bronze impellers, and cast iron
bowls. Due to efficiency and reliability requirements, fabricated impellers shall not be accepted.
The pump barrels shall have a corrosion inhibiting FDA approved lining and a 3" cleanout
access. The discharge head shall be cast iron flanged with seal flush line and OSHA approved
coupling guard. The mechanical seal shall be sleeve mounted and replaceable without removing
the motor, disassembling the pump, or disturbing the piping connections.
B. Motors
Each motor shall be WP-1 or TEFC vertical hollowshaft designed to NEMA standards and
operate within the rated capacity at any point on the pump curve. Due to serviceability
requirements, solid shaft motors shall not be accepted. Include a hex-type shaft coupling with air
vent and a steady bushing for each pump-motor assembly.
Pump
Flow
Head
Power
Max. Speed Min. Eff.
Voltage
(GPM)
(Ft.)
(HP)
(RPM)
(%)
(3ø/60~)
1
2
3
4
5
C. Check Valves
Provide non-slam check valves on the discharge branch of each pump.
D. Power and Control Panel
Furnish a single compartment SyncroFlo power and control panel. Enclosure and base pan shall
be corrosion resistant steel. It shall house all control components and include control power
transformer with control power light, pulsating audiovisual alarm system, and other necessary
controls. Include fused disconnect switches with external operating handles, magnetic starters
with 3-leg overload protection, pump run lights, and hand-off-auto selector switches for each
pump. All of the electrical components shall be factory wired and tested by the pump system
manufacturer in accordance with the provisions of the National Electrical Code. All control wires
shall be individually numbered and each component shall be labeled accordingly. All internal
wiring shall be copper stranded, A.W.G. with a minimum insulation of 90o C. Pump
manufacturer shall certify the complete power and control assembly with the UL mark for
Industrial Control panels.
E. Programmable Controller
Provide a UL listed programmable controller to control all pump starts and stops and indicate
alarm conditions. The controller shall have the following features:
1. Nonvolatile EEPROM memory to prevent program loss due to power failure
2. Program cartridge or loader which allows program changes to be made by the factory and
sent to the field for simple loading by the operator
3. Input and output "on" status lights for ease of monitoring
4. Controller shall be designed for use in locations where electromagnetic noise, voltage
spikes, 32 - 130o temperature, 35 - 85% humidity, and mechanical shock within the range
certified by JIS 0912 exist.
F. Flow Sensor
Flow Sensor shall be accurate within 1.0% of full scale and repeatable within .3%. Flow sensor
shall detect flow to ½ FPS when flow rate is decreasing.
G. Operator Interface (Data Access Console)
The data access console shall be flush mounted in the door of the control panel. The console
shall include an alphanumeric keypad with audible feedback. The following data shall be
accessible through the operator interface:
1. One-touch access to display system status including flow rate (GPM), current pressure, any
existing system alarm (or "NO ALARMS"), the current speed of the pumps (%), and the date and
time.
2. One-touch access to Usage History, which may be reset. Usage History shall record the
maximum instantaneous flow, along with the date and time.
3. A Setup Menu system for adjusting setpoints. Display and adjust flow and pressure set points
and time delays. Set pump alternation to manual or automatic. Set the hour of the day for
automatic alternation. Restore all factory defaults. Protect adjustable settings with a password.
4. One-touch access to an Alarm History of the past 10 alarms. Each log shall include individual
pump run status, VFD mode, flow, and alarm type.
5. One-touch access to an Alarm List of all possible alarms and their current status.
H. Variable Frequency Drives
Each pump shall have its own variable frequency drive with the following features:
The drive shall be a voltage source, GTR or IBGT power transistor based inverter - PWM Type.
The inverter shall use a high carrier frequency to reduce drive and motor noise.
Drive shall be capable of operating in an ambient temperature between 15 degrees F and 100
degrees F and a line voltage variation of less than 10 percent.
Self protection features shall include: under voltage and over voltage protection, current overload
protection, short circuit protection, power failure protection, ground fault protection, and overtemperature protection.
A four digit LED readout shall be provided to indicate the following: drive enabled, output
frequency, and all VFD fault conditions.
The drive shall be capable of automatically restarting after any of the following: overload overvoltage, converter over-current, inverter over-current, or power failure.
The following drive parameters shall be user adjustable: acceleration speed (1 to 300 seconds),
deceleration speed (1 to 300 seconds), minimum speed, and maximum speed.
The drive shall have a front mounted "HAND-OFF-AUTO" selector switch and a potentiometer
for adjusting drive speed in the "HAND" position.
J. PRESSURE TRANSMITTER
A digital pressure transmitter shall be connected to the system header. The transmitter shall have
1.0% accuracy, stainless steel wetted parts and a waterproof enclosure. Transmitter shall be
capable of withstanding over pressurization of double its range. Pump system shall be capable of
calibrating the zero setting in the field.
K. Instrumentation and Emergency Controls
1. Temperature relief valve shall be mounted in the pump casing or seal bypass line for fast,
accurate response.
2. Individual 4½" ASA grade A pressure gauges for each pump, system, and suction
pressures.
3. All pressure sensors shall be control panel mounted.
4. Pressure gauges shall be mounted on a gauge board with 5 sides enclosed, located
adjacent to the control panel.
5. Provide pressure sensors for high system pressure, low system pressure, and low suction
pressure conditions.
PART III EXECUTION
3.01 Installation
The contractor shall install the system in accordance with the manufacturer's recommendations.
1. Include a floor drain sized according to local code. Drain shall provide emergency
drainage to prevent building damage in the event of seal failure, over- temperature.
2. Install pump system on a concrete pad at least _____" tall.
3. Anchor pump system in accordance with system manufacturer's recommendations.
4. Pipe temperature relief valve discharge to drain
5. Install isolation valves on each header.
6. Pipe pumping system bypass line with isolation valve
7. All field anchoring, piping, and wiring shall comply with local codes.
3.02 Startup Service
The service of a factory-trained representative shall be made available on the jobsite to check
installation, supervise startup, and instruct the operator.