SECTION 40 27 95
ELECTRIC VALVE AND GATE ACTUATORS
PART 1
GENERAL
1.1 SUMMARY
A.
Section includes general information, products, and execution for electric valve and gate actuators.
B.
Related Sections:
1. SECTION 01 44 33 – MANUFACTURERS’ SERVICES
1.2 REFERENCES
A.
American Water Works Association (AWWA):
1. C504 – Rubber Seated Butterfly Valves
2. C542 – Electric Motor Actuators for Valves and Slide Gates
1.3 SUBMITTALS
A.
Shop Drawings:
1. Product data sheets for make and model.
2. Complete actuator information, descriptive literature, Specifications, and identification of materials of
construction.
3. Factory mechanical drawings of the complete actuator assembly including the electric motor, pedestal
and rod extensions.
4. Open/close and throttling sizing calculations.
5. Maximum torque capabilities of operator mechanism and operating torque requirement for each valve
under the specified operation condition.
6. Motor and actuator characteristic data and nameplate data.
7. Actuator mechanical contactor or solid state starter Manufacturer, model number, cut-sheet, etc.
8. Factory electrical drawings showing schematic representation of the complete power and control
circuitry and wiring diagrams showing all interconnections, wire designations and terminal numbers for
remote operation and position indication by the OWNER. Each actuator drawing shall be identified
with the respective valve number or tag number indicated in the Bill of Materials, Electric Actuator
Schedule or on the P&IDs in the I&C Drawings.
9. Factory installation and services information giving full installation and adjustment instructions, and
part listings for all field replaceable parts.
10. Listings of normal starting and running currents, and full nameplate data from the motor.
11. Provide all drawings in .dwg or dxf electronic format. AutoCAD Drawings shall be in accordance with
DW Design Drafting Standards and shall include, but not be limited to, the Standards located online in
DW’s
CPPM:
http://www.denverwater.org/DoingBusinesswithUs/EngineeringOverview/Capital
ProjectsProceduresManual/.
B.
Quality Control Submittals
1. For electric actuators, certified copies of reports covering proof-of-design testing of the actuators in
accordance with AWWA C542, Section 5, together with an affidavit of compliance in accordance with
AWWA C542, Section 6.3, shall be submitted to ENGINEER before the actuators are shipped.
C. O&M Manuals:
1. Shop Drawing Submittals as previously outlined.
2. Quality Control Submittals as previously outlined.
3. The Manufacturer shall submit installation and O&M instructions in a manual presenting full details for
installation, care, and maintenance of all equipment furnished under the Contract.
4. Manual:
a. O&M manuals shall be provided by the Equipment Manufacturer at least 2 weeks prior to shipment
of all major equipment components.
b. Each manual shall be a bound, indexed binder prepared specifically for this Project rather than
general equipment instructions.
c. Installation and maintenance instructions for the specific equipment, including the installation and
startup sequences, maintenance items, and trouble-shooting checkpoints
d. Provide printed, tabbed, and bound instructions covering all details pertaining to installation, care,
and maintenance of all equipment and data. Identify all parts with a number and a description.
e. Provide 3 hard copies and 3 electronic copies (pdf with sections tabbed/linked) on jump drives to
the OWNER.
D. Extra Materials: Furnish, box, tag, and clearly mark on exterior, identify each item with the Manufacturer’s
name, description, and part number for shipment and long-term storage, and deliver the following extra
materials prior to 75% of the Substantial Completion date:
1. Provide five hand-held programmers, three IR communication setups (including sensors, sensor
mounting bracket, cables, etc) for laptop computer, and three licensed copies of actuator software, for
the actuators.
2. Provide 2 fuses, for every actuator, of every size and type of fuse internal to the actuator. Provide one
spare battery for every applicable actuator.
3. Provide one extra lockable clasp for lock out, tag out use.
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SECTION 40 27 95
ELECTRIC VALVE AND GATE ACTUATORS
E.
Warranty Documentation
1. Sample warranty.
2. Warranty.
F.
Supplements listed in this Section.
1.4 QUALITY ASSURANCE
A.
Equipment Manufacturer Qualifications: A minimum of 10 years of documented experience in the Work of
this Section.
B.
UL Compliance: Materials manufactured within the scope of UL shall conform to UL Standards and have
an applied UL listing mark.
C. Performance and Design Requirements:
1. General:
a. Actuators and appurtenances shall be designed for the conditions and requirements as specified
IN the respective valve sections.
b. Liberal factors of safety shall be used throughout the design, especially in the design of parts
subject to intermittent or alternating stresses. In general, working stresses shall not exceed
one-third of the yield point or one-fifth of the ultimate strength of each material.
2. Valve actuators:
a. Each actuator shall be designed to open or close the valve under all operating conditions.
b. The actuators and gear train shall be designed for the full design head rating of the valve or gate
and a maximum fluid velocity of 16 feet per second
c. Valve actuators shall be provided and adjusted by the valve manufacturer. Actuator mounting
arrangements and positions shall facilitate operation and maintenance and shall be determined
by the Valve Manufacturer unless shown otherwise on the Drawings or directed by ENGINEER.
3. Limit switches:
a. A minimum of 8 programmable limit switches shall be provided for each actuator. Limit switches
shall be programmed for all status functions.
D. Manufacturer's Training:
1. The actuator manufacturer shall supply a factory-trained field service representative to provide
operator and maintenance training for the actuators. The representative must be a full time employee
of the Manufacturer qualified to do field training presentations.
2. Training will consist of a minimum of 4 hours and should include both a classroom presentation and a
field presentation. The training must be specific to the products installed and the application.
1.5 DELIVERY, STORAGE, AND HANDLING
A.
Delivery and handling of the valves shall be in accordance to Manufacturer’s recommendations in their
O&M manual. Upon delivery, equipment shall be stored in a safe, secure area protected from damage,
vandalism, and weather (e.g. sun, precipitation, and flooding).
1.6 SITE CONDITIONS
A.
Environmental Requirements: Materials and equipment shall be designed and constructed for continuous
operation, at rated current and voltage, at 5,400 feet above mean sea level, 104°F ambient temperature
and 95% relative humidity. The Equipment Manufacturer shall submit a certified letter stating that the
equipment provided meets the requirement.
1.7 WARRANTY
A.
Manufacturer: Warranty for one year from the Substantial Completion date for the satisfactory performance
and installation of the electric valve actuator system and associated appurtenances.
PART 2
PRODUCTS
2.1 APPROVED MANUFACTURERS
A.
Rotork, IQ
B.
Auma: Aumatic AC.2.
2.2 MATERIALS
A.
Except as modified or supplemented herein, materials used in the manufacture of actuators shall be in
accordance with AWWA and C542.
2.3 COMPONENTS
A.
Electric Actuators:
1. General:
a. Electric motor-operated actuator shall be designed to develop sufficient operating torque to
unseat, open and close the valve under all operating conditions specified herein. Except as
modified or supplemented herein, the actuator shall be in accordance with AWWA C542.
b. Electric motor-operated actuator shall be designed to move the valve or gate from fully open to
fully closed position within the time specified in the Electric Actuator Schedule, under the maximum
differential pressure across the valve and maximum flow conditions.
c. Electric actuator shall be a completely integrated, electrically powered unit with isolated manual
handwheel operation in case of power failure. Provide motor actuator with rated output torque at
least 1.5 times the maximum torque required to open or close the valve at any position including
seating and unseating conditions.
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SECTION 40 27 95
ELECTRIC VALVE AND GATE ACTUATORS
d.
2.
Electric actuator shall include the motor, actuator unit gearing, motorized adaptor, limit switches,
torque switches, declutch mechanism, manual operating handwheel, local valve position indicator,
position transducer, and push button control station to allow local electric control of valve position.
e. Electric actuator shall be suitable for open/close or throttling service, unless modulating service is
specified in the Electric Actuator Schedule or on the P&IDs on the I&C Drawings. Electric actuator
shall be suitable for Class I duty cycle, shall be suitable for operation over a temperature range of
-20°F to 150°F and shall be of totally enclosed, non-ventilated construction, O-ring sealed,
meeting NEMA Type 6 enclosure requirements, at a minimum of 7m submersion for 72 hours
according to IP68 standards.
f. The complete actuator shall be furnished fully factory wired, tested, and ready for interconnection
with the electric power source and external remote control "dry-contact" interposing relays
furnished by others.
g. Gearing shall be grease or oil-bath lubricated. Lubricating oil shall be food grade. Ball or tapered
roller bearings shall be used throughout.
h. A handwheel shall be provided for manual operation with an arrow to indicate the open or close
rotation. The handwheel shall not rotate during electric motor operation and operation of the
handwheel shall not cause the motor to rotate. When in manual operation, the operator shall
remain in this mode until the electric motor is energized, at which time the actuator shall
automatically return to electric motor operation and shall remain in motor operation until
manual operation is again re-engaged. The change from electric motor to manual operation shall
be accomplished by a positive action declutching mechanism, which mechanically disengages the
motor and motor gearing. The declutching mechanism shall be lockable with a standard padlock.
A blocked or fused motor shall not prevent manual operation. It shall be impossible to place the
operator directly into manual operation while the motor is running. The handwheel shall rotate in
a counter-clockwise direction to close the valve. The handwheel diameter shall be selected to
result in a maximum required force of 80 pounds to close or open the valve under any operating
conditions.
i. The valve actuator shall have an electro-mechanical reversing contactor mounted in the control
enclosure, with a control power transformer furnishing control power voltage. The control power
transformer shall utilize a fuse in each primary lead and one fuse in the secondary lead. The other
secondary lead shall be grounded. The contactor shall be either a standard full size NEMA type
horse-power rated device, or shall be a definite purpose contactor sized to provide a minimum of
50,000 full load current interruption cycles using IEC utilization Category AC-4 curves. Contactors
designated as IEC type devices, which do not meet these requirements, will not be acceptable.
Features:
a. Open/close.
b. Programmable, non-intrusive set up and calibration.
1) Externally programmable.
2) Programming performed with:
a) Handheld infrared linked device.
b) Local control switches and LCD.
c. Self-contained unit with cast iron or aluminum alloy housing.
d. Shall be integrally assembled on the applicable valve or gate by the Valve or Gate Manufacturer
e. Protected from the ingress of moisture and dust when terminal cover is removed. Provide the
same rating as the actuator when the terminal cover is removed.
f. Enclosure to allow for temporary site storage without the need for electrical supply connection.
g. Mount the actuator above the reduction gearing.
h. Electronic torque sensing circuitry with independently programmed motor shutoff torque set points
in either direction of travel.
i. Valve travel limit switch function provided by electronic Hall Effect magnetic pulse counting
circuitry.
j. Rotary selector or integral pushbutton control station to provide full valve operation, using the
electric motor, while operating isolated from the remote control equipment.
1) Three Position rotary selector switch local–off–remote and padlockable in any position.
2) Switch leads brought to the terminal strip:
a) To allow for remote indication of switch position.
b) To provide remote open and close contact power.
c) To provide a means of disabling local control power.
3) Valve function rotary selector switch for open–close–stop operation:
a) Operate when selector switch is in the local position.
b) Field configurable for push and hold control.
4) Provide LED indicating lights:
a) Red: Full open.
b) Green: Full closed.
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SECTION 40 27 95
ELECTRIC VALVE AND GATE ACTUATORS
c) Red and green: Modulating.
Position transducer:
1) Internally mounted, programmable.
2) 4 mA to 20 mA, scaled to 0% to 100% valve position. Uses Hall Effect measurement or
absolute encoder.
3) Suitable for use with an external load impedance of up to 500 ohms.
4) Output signal at a terminal strip for connection.
5) External 24 VDC power supply input to keep current transmitter, status contacts, and LCD
operational and indicating valve position when the main operator motor power source has
been de-energized.
6) Actuator position shall be internally updated while the main power source is removed,
including manual operation, and reflect actual position when the power is restored.
l. Electric actuator control power wired out to terminals for the customer’s use. Each actuator shall
be furnished with a sealed compartment containing a reversing controller, multi-tap transformer,
electronic controls, and monitoring and protection modules. Reversing controllers shall be both
mechanically and electrically interlocked and provided with the necessary direct-operated auxiliary
contacts for required interlocking and control. The multi-tap transformer shall provide power for
all internal circuits, and shall provide 120 VAC or 24 VDC power supply power wired out to
terminals for remote controls.
m. Electromechanical reversing contactor:
1) Mounted in the control enclosure.
2) Control power transformer furnishing control power voltage.
3) Standard full size NEMA type horsepower rated device, or a definite purpose contactor.
4) Sized to provide a minimum of 50,000 full load current interruption cycles using IEC utilization
Category AC-4 curves.
5) Contactors designed as IEC type devices, which do not meet these requirements, will not be
accepted.
n. Remote controls:
1) Valve position and actuator status indication shall be provided by 8 contacts which can be
selected to indicate any position of the valve. Contacts shall be NO or NC selectable.
Contacts shall maintain and update position indication during handwheel operation. Contacts
shall be rated 5 amperes, 250 VAC or 30 VDC.
o. Vandal resistant, lockable cover protecting standard rotary selectors and window display.
3. Electric Motor shall:
a. Be rated for an operating voltage in accordance with the Contract Documents or Electric Actuator
Schedule, 60 Hz, 1.0 Service Factor, reversing, totally enclosed non-ventilated.
b. Produce actuator output of 1.5 times the required valve operating torque.
c. Normal operating temperature rise that does not exceed NEMA Class B standards at 5,400 feet
above mean sea level.
d. Ratings are for 5,400 feet above mean sea level without reducing the service factor.
e. NEMA Class H Insulation.
f. Anti-friction bearings, lubricated and sealed against contamination.
g. Motor overload protection via thermal switches.
4. Terminal facilities:
a. Terminal facilities for connection to motor leads, switches, and control and indication signals shall
be provided in a readily accessible terminal compartment. The terminal compartment shall have
at least 3 openings for external electrical conduits, all sized for at least 3/4 inch RGS conduit.
Each terminal compartment shall be large enough to allow easy routing and termination of fifteen
#14 AWG conductors.
b. The terminals shall be embedded in a terminal block of high tracking resistance compound.
c. The terminal compartment shall be separated from the inner electrical components of the actuator
by means of a watertight seal and shall be provided with a minimum of 2 threaded cable entries
with provision for a maximum of 4. Wiring supplied as part of the actuator to be contained within
the main enclosure for physical and environmental protection. External conduit connections
between components are not acceptable. A durable terminal identification card showing plan of
terminals shall be provided attached to the inside of the terminal box cover indicating:
1) Serial number.
2) External voltage values.
3) Wiring diagram number.
4) Terminal layout.
FINISHES
A.
Shop Painting:
1. Ferrous metal surfaces, except bearing and finished surfaces and stainless steel components of valve
actuators and accessories, shall be shop painted for corrosion protection. The Valve Manufacturer's
k.
2.4
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SECTION 40 27 95
ELECTRIC VALVE AND GATE ACTUATORS
2.
standard coating will be acceptable, provided it is functionally equivalent to the specified coating and
is compatible with the specified field painting.
The following surfaces shall be painted:
Polished or Machined Surfaces
Rust-preventive compound
Other Surfaces
Epoxy enamel
Actuators and Accessories
Universal primer
PART 3
EXECUTION
3.1 GENERAL
A.
Equipment provided under this Section shall be fabricated and assembled in accordance with the Drawings,
Specifications, engineering data, instructions, and recommendations of the equipment Manufacturer,
unless exceptions are noted by ENGINEER.
B.
Actuators shall be furnished with all necessary parts and accessories in accordance with the Contract
Documents or otherwise required for a complete, properly operating installation and shall be the latest
standard products of a Manufacturer regularly engaged in the production of actuators.
C. Governing Standards:
1. Except as modified or supplemented herein, all powered actuators shall be in accordance with
AWWA C542.
2. Except as modified or supplemented herein, all manual and cylinder actuators for butterfly valves shall
be in accordance with AWWA C504.
D. Power Supply: Power supply to electric actuators will be in accordance with the Drawings or the Electric
Actuator Schedule.
E.
Marking:
1. Each actuator shall be marked with the Manufacturer's name, model number, and the country of origin.
An identifying serial number shall be stamped on a corrosion-resistant plate attached to the actuator.
2. Each actuator shall be factory tagged or marked to identify the actuator and the applicable valve or
gate by number or service as indicated in the Electric Actuator Schedule or on the P&IDs in the
Instrumentation and Control Drawings.
F.
Temporary Number Plates:
1. Each actuator shall be factory tagged or marked to identify the actuator and the applicable valve or
gate by number or service in accordance with the Electric Actuator Schedule and on the P&IDs in the
I&C Drawings.
3.2 INSTALLATION
A.
In accordance with the Manufacturer’s instructions and recommendations
3.3 QUALITY CONTROL
A.
Manufacturer's Field Services:
1. The Actuator Manufacturer shall supply a factory-trained field service representative to inspect the
installation of the actuators. The representative must be a full-time employee of the Manufacturer
qualified to do field service work. As specified in SECTION 01 44 33.
2. The Manufacturer's field service representative must be on-site as often as required to properly
oversee the installation of the actuators and to assist with troubleshooting, and as a minimum shall be
there for 24 hours during three separate trips. The representative shall also be available for providing
the Manufacturer's Certificate of Proper Installation.
3.4 SUPPLEMENTS
A.
Supplement A – Electric Actuator Schedule
END OF SECTION
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SECTION 40 27 95
ELECTRIC VALVE AND GATE ACTUATORS
ELECTRIC ACTUATOR SCHEDULE
VALVE LOCATION
TAG NO.
SIZE (IN)
SERVICE,
CLASS
QUINCY AVE. & IRVING
ST. VAULT
FV-01
42-INCH
O/C, CLASS 3
ACTUATOR
LOCAL
CONTROLS
MAINTAINED
POWER SOURCE
CYCLE TIME
RANGE (SEC)
240V/1PH
180-300
DIRECTION OF
HANDWHEEL TO
OPEN
RIGHT
Abbreviations:
OR Open Right
OL Open Left
SEC SecondsService: O/C = Open-Close, T = Throttling*, M = Modulating*
Actuator Local Controls:
Maintained = Seal-in latching contacts
Momentary = No seal-in latching contacts
*Specify Class 1, 2, 3 or 4 per AWWA C542 (60, 100, 600, 1200 Starts/Hour)
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SECTION 40 27 95 SUPPLEMENT A
ELECTRIC VALVE AND GATE ACTUATORS