*NOTE: An additional charge of $875.00 will be applied if disassembly of the fume hood is required to transport it within the building.

Manufacturer's published price list used: Flow Safe Stable Vortex Fume Hood Price List effective August 1, 2006.

18.18

Specifications for Item 2 (FLOW SAFE VORTEX II MODELS)

18.18.1

Superstructure shall be double wall type. Outer wall shall be 18 gauge cold rolled steel (ASTM A366M) finished per UL 1805. Powder coat finish shall be a minimum thickness 1.2 mil. Color shall be selected from manufacturer’s standard color chart by the University.

18.18.2

Inner wall and baffles shall be galvanized steel covered with a minimum 3/16” thick chemically resistant white liner. The interior wall shall be securely held in place with stainless steel threaded fastenings with corrosion protection.

18.18.3

Flush mounted removable access panels shall be provided on inside walls of liner for maintenance of valves and remote control stem attachments. Inside panels shall be held in place using stainless steel threaded fasteners.

18.18.4

Electrical access shall be through the front of the hood.

18.18.5

Area surrounding sash opening shall be rounded to create an aerodynamic configuration with side posts maximum width 4.5 inches. Side posts shall incorporate an airfoil design. A multi-vector airfoil bypass and dynamic turning vane shall be mounted behind the sash.

18.18.6

Hood depth dimensions and vortex chamber shall be mathematically sized to support a Bi-Stable vortex.

A multi-vector airfoil bypass and dynamic turning vane shall be mounted behind the sash at the front edge of the work surface. Bypass airfoil and turning vane shall be coated steel with a chemical resistant finish. Airfoil shall be permanently attached via spring loaded pins to hood allowing airfoil to swing up for clearing of spill trough and for cord access. Fume hood shall incorporate a trough to collect spills underneath the multi-vector bypass airfoil.

18.18.7

A steel safety bar with urethane powder coating shall be provided across the full width of the bottom air flow positioned to prevent users from directly blocking the air foil with their body. The safety bar shall be located approximately 4 inches from the front edge of the bottom air foil and should not be removable without special tools.

18.18.8

Sash shall be a combination horizontal/vertical sash with1/4 inchlaminated safety glass.

18.18.9

Maximum sash opening shall be 27-1/2”. An additional 7” high, clear glass viewing panel integrated as part of the sash lintel shall maintain a clear vision height of 34” above countertop. Clear fixed viewing panel and horizontal sash panels shall have stainless steel or plastic trim on all exposed edges to protect operators from injury and prevent glass edges from chipping.

18.18.10

Sash frame shall be metal construction with chemical resistant finish.

18.18.11

Vertical sash movement shall allow hood loading and horizontal movement to provide a safety body shield when needed. Air gap between sash and sash pocket shall be no more than 1/8 inch. Horizontal sliding sashes shall be mounted on two tracks supported from top rail by rollers.

18.18.12

All glass panels shall have finger pulls on each horizontal panel and shall have plastic edge guards on all vertical edges of each horizontal panel. Bottom edge of vertical sash frame shall have full length finger pull with dynamic turning vane airfoil design.

18.18.13

Single front counterweight system shall include weights stainless steel cables (with minimum safety factor of 10, and not exposed to exhaust vapors) and sash guides, steel pulleys with cable retaining device. Counterweight system shall be balanced to provide smooth operation of the sash at any point along the full width of the bottom sash pull.

18.18.14

Sash height limiting hardware shall be provided, mounted on exterior of the hood, to prevent raising the vertical sash unintentionally above setpoint.

18.18.15

Work surface shall be a modified epoxy resin 1"- thick surface, dished at least 1/4” to contain spills, color: black.

18.18.16

The bi-stable vortex control system shall be factory installed and wired on the Vortex II fume hood.

18.18.17

The vortex control system shall include:

• Dedicated VFV vortex pressure transducer controller
• VFV electronic actuator
• Dedicated VFV hood alarm module
• Linear Trunnion damper

18.18.18

The baffle control system shall correct for fume hood loading, downdrafts, sash movements and activity in front of the hood to maximize fume hood containment.

18.18.19

Contractor's representative shall set up and calibrate baffle control system upon completion of installation.

*NOTE: An additional charge of $130.00 will be applied in the event that the front section of the bench top hood needs to be removed for passage within the building.

Manufacturer's published price list used: August 2006

18.19

Specifications for Item 3 (LAB CRAFTERS AIR SENTRY MODELS)

18.19.1

Superstructure shall be double wall construction cold rolled steel that will house and conceal structural interior steel walls and service mechanisms. Inner steel wall, outer steel shell and inner liner shall be factory assembled as a rigid, self-supporting component. Fume hood front section shall be removable to facilitate the hood’s access into its final location.

18.19.2

Overall depth of fume hood superstructure shall be 39 inches.

18.19.3

Exterior shell shall be 18 gauge reagent resistant polyurethane coated steel. Color shall be selected from manufacturer's standard color chart by Architect/Engineer.

18.19.4

Inner liner and baffles shall be galvanized steel wall covered with 1/4" thick chemically resistant fiberglass reinforced polyester with smooth finish, color: white. Liner shall be held in place with concealed fasteners, protected from corrosion.

18.19.5

Flush mounted removable access panels shall be provided on inside walls of liner and on outside side panels to allow ease of maintenance on valves and baffle actuator.

18.19.6

Hood front shall include posts, tracks, sash with weight, pulleys, cable, foil, pre-piped plumbing fixtures and pre-wired electrical fixtures. Hood front with sash and pre-wired electrical components shall be removable from hood body as a complete assembled one piece unit without disconnecting electrical components.

18.19.7

The superstructure perimeter surrounding the sash opening shall have an airfoil design for optimal airflow entry and containment at hood face. Hood post shall have airfoil design and not exceed 4-1/2 inches in width.

18.19.8

A multi-vector bottom airfoil mounted behind the sash and above the work surface shall be steel with a chemically resistant coating and shall have multi-channel slots. For ADA compliant fume hoods, a 2 inch deep trough below the airfoil shall be included to collect spills. The slotted airfoil shall be capable of swinging up to pass line cords underneath and to clear spillage from trough.

18.19.9

A 316 stainless steel safety bar shall be provided across the full width of the bottom air flow positioned to prevent users from directly blocking the air foil with their body. The safety bar shall be located approximately 4 inches from the front edge of the bottom air foil and be attached with tamper proof fasteners.

18.19.10

Sash shall be a combination horizontal/vertical sash withlaminated safety glass.

18.19.11

Overall vertical sash viewing height shall be 34 inches with a 7 inch high clear fixed panel along the top of the opening. Overall vertical sash opening height shall be 27 1/2".

18.19.12

Vertical sash shall be narrow 1-1/2” design and have built in horizontal sliding sashes that ride on rollers supported from the top rail in two tracks. Bottom edge of vertical sash shall have full length stainless steel pull with turning vane design. Clear fixed viewing panel and horizontal sash panels shall have stainless steel or plastic trim on all exposed edges to protect operators from injury and prevent glass edges from chipping.

18.19.13

Sash frame shall be aerodynamic radius design, reinforced to support added weight and shall have a mechanism to allow it to move below the counter top. Sash frame shall be steel construction with chemically resistant coating.

18.19.14

Counterweight system shall include single weight, non-coated military spec 1/8-inch stainless steel cables and sash guides, ball bearing type nylon pulleys with cable retaining device. System shall be designed to prevent sash drop in the event of cable failure. Counterweight system shall be balanced to provide smooth operation of the sash at any point along the full width of the bottom pull and prevent sash creep at any position . Sash assembly shall be enclosed in the front 12 inches of the hood assembly and shall be easily removed with less than ten fasteners for service and transport into the lab.

18.19.15

Work surface shall be a modified epoxy resin 1" thick surface, dished at least 1/4” to contain spills, color: black.

18.19.16

The vortex control system shall be factory installed and wired on the fume hood.

18.19.17

The vortex control system shall include:

• One (1) Controller/Monitor with Vortex Sensor
• One (1) Baffle Actuator

18.19.18

The vortex sensor component shall be surface mounted in the fume hood sidewall and shall detect pressure difference between a stable and unstable vortex which is the direct indication of the fume hood performance.

18.19.19

The baffle controller shall be mounted on the fume hood post and shall control the electric servo motor that actuates automatic back wall baffles to maintain a stable vortex in the fume hood.

18.19.20

The electric servo actuator motor shall be 24VAC, 0-10 VDC input, 90 degree angle of rotation, current limited.

Manufacturer's published price list used: Fisher Hamilton 2006 Price List

NOTE: Discount percentages shown for Equipment apply to Fume Hood Superstructures. Discount percentages shown for Accessories apply to laboratory tops, fixtures, accessories, fume hood base cabinets, flammable and acid storage base cabinets, free standing flammable storage cabinets, transitions, motors/blowers, controls, exhaust outlets and other catalogued Fisher Hamilton products.

18.17

Specifications for Item 1 (FISHER HAMILTON PIONEER MODELS)

18.17.1

Superstructure shall be a rigid, self supporting assembly of double wall construction, maximum 4-7/8” thick. Walls shall consist of a sheet steel exterior shell and a corrosion resistant inner liner, and shall house and conceal steel framing members, attaching brackets and remote operating service fixture mechanisms and services.

18.17.2

Exterior shell shall be high quality, cold rolled, mild steel meeting requirements of ASTM A366; gauges U.S. Standard and galvanized, finished with electrostatically applied reagent resistant urethane powder coat, minimum thickness 1.2 mils. Panels must be attached to a full frame construction, with minimum 14 gauge galvanized members. Panels and brackets shall be attached to eliminate screw heads and metallic bracketry from hood interior.

18.17.3

Overall depth of fume hood superstructure, not including directed airflow chamber, shall be 37-1/4 inches.

18.17.4

Inner liner shall be poly-resin reinforced polyester panel, with smooth finish and white color in final appearance. Flexural strength shall be 14,000 psi. Flame spread shall be 15 or less per U.L. 723 and ASTM E84-80. All interior seams shall be sealed and caulked.

18.17.5

Access to fixture valves concealed in wall shall be provided by exterior removable access panels, gasketed access panels on the inside liner walls, or through removable front posts. Gaskets shall be White 70 durometer PVC for interior access panels. Interior access panels shall have gaskets to eliminate air leakage and to retain liquids inside hood.

18.17.6

Baffles providing controlled air vectors into and through the fume hood shall be fabricated of the same material as the liner. Supports and brackets shall be non-metallic. Minimal exhaust slots full height on vertical sides of the baffle shall be provided. High performance 2-piece baffle shall be used. Baffle shall incorporate exhaust slots located to purge the upper and lower area of the hood. Baffle shall be non-adjustable, but removable for periodic cleaning and retrieval of debris.

18.17.7

Access opening perimeter shall have air foil or streamlined shape with all right angle corners radiused or angled.

18.17.8

Bottom horizontal air foil shall be a triple vaned design to minimize reverse flows and eddy currents at the work surface. Bottom air foil shall be steel with urethane powder coating to increase acid and abrasion resistance. Air foil and sill shall be no more than ½” above the height of the work surface. The air foil shall provide a nominal two inch bypass when sash is in the closed position with area between vanes sufficient in size to pass through electrical plugs. Air foil shall not be removable without use of special tools.

18.17.9

A steel safety bar with urethane powder coating shall be provided across the full width of the bottom air flow positioned to prevent users from directly blocking the air foil with their body. The safety bar shall be located approximately 4 inches from the front edge of the bottom air foil and should not be removable without special tools.

18.17.10

Exterior structural members attachments shall use sheet metal screws, zinc plated, blunt nose, with no sharp edges on the screw points. Interior fastening devices shall be concealed. Exposed screws shall not be acceptable. (Screw head “caps” shall not be acceptable). Exterior side access panel member fastening devices shall be exposed corrosion resistant, non-metallic material, creating a positive mechanical latch. Latch must be flush type. Exposed screws or velcro type fasteners shall not be acceptable.

18.17.11

Work surface shall be a modified epoxy resin 1-1/4” thick surface, dished at least 1/4” to contain spills, color: black.

18.17.12

Combination vertical and horizontal sash shall have a 27.5 inch high access opening along with a fixed top viewing panel to provide a 35” high overall sight line. Sash frame on bottom and sides shall be no more than 1.5” wide, corrosion resistant steel with chemical resistant powder coating. Sash frame shall ride in extruded PVC sash guides. Bottom edge of sash frame shall be formed to minimize air flow turbulence into the hood. Horizontal sliding panels shall be 7/32” thick laminated safety glass, top hung on nylon tired stainless steel ball bearing wheels and provided with finger pulls. Horizontal sash panels shall be mounted to prevent easy removal. Fixed top viewing panel shall be minimum 3/8” thick laminated safety glass. Exposed glass edges of viewing panels and sash panes shall have stainless steel or black plastic trim to protect operators from injury and prevent glass edges from chipping.

18.17.13

Sash counter balance system with sprocket and chain drive with single weight shall be self-leveling, prevent sash tilting, and permit ease of operation at any point along full width pull. Pull required to raise or lower sash throughout its full length of opening shall be a maximum of seven pounds. Sash and weight shall be life cycle tested. Sash shall open and close against rubber bumper stops.

18.17.14

Sash chain and pulley assembly:

Sash chain shall be ANSI #35 steel, single strand with an average tensile strength of 2,400 pounds, and maximum working load of 480 pounds. Pulley assembly for sash chain shall be finished bored steel drive sprockets and keyed drive, 1/2” diameter, with front connector shaft, rear idler sprockets; and double sealed lubricated type ball bearings. All sprockets shall be steel with zinc dichromate finish.

18.17.15

Auto-Sash mechanism shall be designed to promote usage of sash as an upper body and face shield. Sash operating position shall be based on the combination sash fully lowered with horizontal panels opened to the desired configuration of the user. Combination sash shall have the capability to be raised to full 27.5” vertical opening for loading, unloading and setup of large apparatus. A lock-open lever shall be provided. When lock-open is not engaged, the combination sash shall lower automatically to a nominal 18” position when released. Auto-sash function shall be life cycle tested and not incorporate the need for motor drives.

18.17.16

An integrated visual sash alarm light, separate from the safety monitor and alarm specified in Section 18.13, shall illuminate when the sash is raised above 1 inch from the fully closed position.

18.17.17

An integrated audible sash alarm, separate from the safety monitor and alarm specified in Section 18.13, shall annunciate when the sash position is raised above the 18 inch open position.

18.17.18

Airflow chamber shall assist fume hood containment by directing room air between the operator and the hood from above sash opening. Chamber shall be low resistance, 18 gauge steel with integral distribution media and polycarbonate honeycomb flow straightener at outlet. Blower shall be an integral part of the chamber with dual forward curved wheels. Motor shall be shaded pole, low horsepower rated for a 30,000 hour duty cycle. Housing shall be powder-coat finished and vibration isolated. The blower shall activate automatically when the combination sash is raised above the 18 inch open position.

CONTRACTOR PERFORMANCE SPECIFICATIONS

18.1

Testing and Acceptance

After installation, all fume hoods shall be tested at the point of use site and required to meet the specified challenge concentrations stated in Section 18.20. Testing shall be performed by the University's ASHRAE agent, who shall be responsible for the determination whether the product meets all specifications of the contract and for final acceptance of the product. The ASHRAE agent, upon request, shall provide credentials that support the authority of the agent to evaluate the fume hoods. Test data will be made available to the Contractor upon request.

If the installed equipment does not meet the specified performance requirements, Contractor will have ten days to remove it. The Contractor will be responsible for all costs associated with removal of the defective unit and installation of a replacement, including documented actual costs for work by University staff or a hired third-party contractor. The testing and acceptance period will begin again with the installation of replacement equipment. If the replacement equipment does not meet the specified performance requirements, the Contractor will be responsible for all costs associated with its removal, and the University shall have the option to cancel the purchase order with no financial obligation to the Contractor.

18.2

Warranty: Contractor must honor, at a minimum, the manufacturer's standard warranty on items and/or parts purchased under this contract. Indicate the warranty term on the Bidder Response Sheet. Upon request, Bidder shall provide a copy of the warranty.

18.3

Shop drawings: Contractor shall supply four copies of shop drawings for University approval prior to production, at no additional charge.

18.4

Contractor must perform all maintenance on site unless the University has granted permission to remove equipment from site.

18.5

Purchasing shall have the option to contract with another vendor for service if Contractor is unable to repair equipment for any reason.

18.6

Employee Identification: All Contractor’s employees, while working on University property, must wear clearly displayed photo identification badges at shirt pocket height, showing they are employees of the contractor. The badges shall be provided by the Contractor at the Contractor's expense. When protective clothing and respiratory protection is required, badges must be available but will not be required to be worn.

18.7

Contractor must provide designated University personnel with instructions on set-up and operation of the fume hood equipment and/or any accessory items.

SPECIFICATIONS FOR ALL FUME HOODS (Sections 18.8 through 18.16)

18.8

Design specifications for all fume hoods

18.8.1

Fume hoods shall function as ventilated, enclosed work spaces, designed to capture, confine and exhaust fumes and vapors produced or generated within the enclosure in accordance with the performance requirements specified. Only high performance fume hoods with combination sashes shall be allowed.

18.8.2

Sash locks shall be provided at 2 inch and 18 inch vertical.

18.8.3

The combination sash shall be a full metal frame with horizontal window panels and channels. The sash shall have two panels for four-foot wide fume hoods, four panels for five- and six-foot wide fume hoods, and five or six panels for seven- or eight-foot wide fume hoods. Sliding panels shall be non-removable by hood operators.

18.8.4

Only fume hoods with a depth greater than 34 inches shall be allowed.

18.8.5

Fume hoods shall be provided with a chemically resistant ¾” safety bar installed in front of the lower airfoil. The hood shall pass all challenge tests specified with the safety bar in place.

18.8.6

Constant volume, bench-type fume hoods shall maintain essentially constant exhaust volume at any sash position. Maximum variation in exhaust CFM, static pressure and average face velocity as a result of sash adjustment shall not exceed 5% for any sash position at the specified exhaust volume.

18.8.7

Design face velocity with sash in full open position is 50 feet per minute. The vertical sash opening height used to measure the face velocity shall be 27-1/2 inches.

18.8.8

Fume hood shall be designed to minimize static pressure drop through hood. Maximum average static pressure loss readings taken three duct diameters above the hood outlet from four points, 90 degrees apart, shall not exceed 0.15 inches water column with sash in full open position at design face velocity.

18.8.9

Fume hood shall be designed to minimize static pressure drop through hood. Maximum average static pressure loss readings taken three duct diameters above the hood outlet from four points, 90 degrees apart, shall not exceed 0.15 inches water column with sash in full open position at design face velocity.

18.8.10

Fume hoods shall be available in standard widths of 4, 5, 6, and 8 feet. (Seven-foot wide hoods shall also be included in the contract if they are a standard width produced by the manufacturer.)

18.8.11

The fume hood manufacturer shall provide a pre-piped, pre-wired junction box at the top of the fume hood for a single point connection of 120v AC power to supply receptacles, light switch and fixture, along with any other control or accessory requiring an electrical supply. Transformers required to step voltage down for fume hood controls or accessories shall be pre-installed and pre-wired in the factory by the fume hood manufacturer.

18.8.12

All work must conform to all State of Wisconsin Codes.

18.8.13

Fume Hood must be Underwriters Laboratories subject 1805 classified. Proper labeling must be affixed to the face of each fume hood indicating classification to the UL 1805 standard for Laboratory Fume Hoods.

18.8.14

All service controls, switches and electrical receptacles shall be mounted at locations on the front of the fume hood post(s). Fume hoods specified to be ADA compliant shall have all fixture controls, switches and receptacles mounted at a maximum height of 54 inches off the floor.

18.8.15

Ceiling closure panels and fill panels shall match hood exterior.

18.9

Plumbing/water specifications for all fume hoods

18.9.1

Factory pre-piping shall extend 2 inches beyond top or bottom of the fume hood. All piping shall be pressure tested in factory. Pipe ends shall be capped until final connection is made.

18.9.2

Water Service shall be 3/8 inch, type L copper water tube, H (drawn temper, ASTM B88; wrought copper pressure fittings, ANSI B16.22 lead free (<.2%) solder, ASTM B32 flux, ASTM B813 copper phosphorous brazing alloy, AWS A5.8 Bcup

18.9.3

Cold water piping, fittings and valve bodies shall be factory insulated with ½” thick closed cell elastomeric insulation. Where possible, insulation shall be slipped over piping. Joints and seams shall be sealed with a full bed of adhesive on both surfaces. Taped joints and seams shall not be acceptable.

18.9.4

Reagent Grade (R.O.) Water Service

Polypropylene pipe and fittings, copolymer ASTM D-4101, Schedule 80 or SDR 11, 150 psi rating at 68 oF, maximum 200 oF, heat fusion fittings.

18.9.5

Reagent grade water piping, fittings and valve bodies shall be factory insulated with ½” thick closed cell elastomeric insulation. Where possible, insulation shall be slipped over piping. Joints and seams shall be sealed with a full bed of adhesive on both surfaces. Taped joints and seams shall not be acceptable.

18.9.6

Cup sinks shall be manufactured of modified epoxy resin, oval shaped, nominal 3 inch x 6 inch, with 1-1/2 inch IPS outlet. Color shall be black .

18.9.7

There shall be no raised lip around cup sinks in the fume hood work surface; drainage should be allowed to enter the cup sink.

18.9.8

Work surface cutout for cup sink shall have rabbet perimeter to allow flush mounting of cup sink rim with dished surface . Raised cup sink lips are prohibited.

18.9.9

Cup sinks shall be located in front half of work surface under water fixture. Installation shall be coordinated with acid storage base cabinets beneath cup sink. A penetration shall be provided through chemical storage base cabinet for the tailpiece of the cup sink drain .

18.9.10

Cup sink locations shall be provided as indicated on the order, right hand or left hand, or both sides.

18.9.11

Single service cold water fixtures shall be manufactured with forged brass valve bodies, with 80 psi working pressure, renewable type neoprene valve disc and a replaceable stainless steel seat. Valve body shall be front loaded type mounted inside superstructure wall.

18.9.12

Fixture outlets shall be brass, stem type with 90 degree tip, panel mounted in side wall liner of fume hood above cup sink. Fixture outlet shall have removable serrated tips, acid and solvent resistant epoxy finish. . Fixture outlet shall have a color-coded mounting washer. Fixture control handle mounted in exterior superstructure post shall be chrome four arm metal paddle handle with plastic color-coded center index button that matches color of serrated tip mounting washer.

18.9.13

Water fixtures shall be factory pre-piped with vacuum breakers in State of Wisconsin – Department of Commerce approved configuration.

18.9.14

Watersaver Faucet Co. L100 vacuum breaker or University-approved equalshall be mounted on exterior, top front corner of fume hood superstructure post. Vacuum breaker shall have polypropylene flow cup with air pocket for buoyancy and tight seal under low flow conditions.

18.9.15

Reagent Grade Water Fixtures shall be manufactured with forged brass valve bodies, with 80 psi working pressure. All valve components in contact with pure water shall be polypropylene. Valve body shall be front loaded type mounted inside superstructure wall.

18.9.16

Fixture outlets shall be polypropylene, gooseneck type with panel mounted turret base in sidewall liner of fume hood above cup sink. Fixture outlet shall have removable serrated tip and color-coded mounting washer. Fixture control handle mounted in exterior superstructure post shall be black plastic bonnet type handle with plastic color-coded center index button that matches color of fixture mounting washer.

18.10

Gas and steam service specifications for all fume hoods

18.10.1

Vacuum and Nitrogen Service shall be 3/8 inch, type L copper water tube, cleaned, washed and capped, H (drawn temper, ASTM B88; wrought copper pressure fittings, ANSI B16.22 lead free (<.2%) solder, ASTM B32 flux, ASTM B813 copper phosphorous brazing alloy, AWS A5.8 Bcup.

18.10.2

Natural Gas, Compressed Air, and Steam Service shall be ASTM A53, type E or S, standard weight (schedule 40) black steel pipe with ASTM A197/ANSI B16.10 class 150 black malleable iron threaded fittings using thread lubricant or teflon tape.

18.10.3

Vacuum, Natural Gas, Nitrogen, and Compressed Air Fixtures shall be manufactured with forged brass valve bodies, with125 psi working pressure, needle valve construction with renewable type stainless steel floating cone and a replaceable stainless steel seat. Valve body shall be front loaded type mounted inside superstructure wall.

18.10.4

Fixture outlets shall be brass, stem type, panel mounted in sidewall liner of fume hood above cup sink. 30 degree angle removable serrated tips, acid and solvent resistant epoxy finish with color-coded mounting washer. Fixture control handle mounted in exterior superstructure post shall be chrome four arm handle with plastic color-coded center index button matching color of serrated tip mounting washer.

18.10.5

Steam Fixtures shall be manufactured with forged brass valve bodies, with 20 psi working pressure, renewable type teflon valve disc and replaceable stainless steel seat. Valve body shall be front loaded type mounted inside superstructure wall.

18.10.6

Fixture outlets shall be brass, stem type, panel mounted in sidewall liner of fume hood above cup sink. 30 degree angle removable serrated tips, acid and solvent resistant epoxy finish with color-coded mounting washer. Fixture control handle mounted in exterior superstructure post shall be chrome four arm handle with plastic color-coded center index button matching color of serrated tip mounting washer.

18.11

Electrical specifications for all fume hoods

18.11.1

All materials and installation methods shall meet the requirements of the National Electric Code.

18.11.2

Wiring shall be minimum #12 copper, type THHN/THWN insulation. Wire color coding shall be black for current carrying conductors, white for neutral conductors and green for ground conductors.

18.11.3

Conduit shall be 1/2 inch, flexible metal, galvanized spiral strip. Conduit shall be secured to superstructure framework with conduit clamps.

18.11.4

Junction Boxes shall be 4 inch square by 2-1/8 inch deep, with code gauge galvanized steel, screw covers.

18.11.5

Spring Wire Connectors shall be solderless spring type pressure connectors with insulating covers for splices and taps.

18.11.6

All electrical devices shall be UL listed.

18.11.7

Fume hood light fixture shall have two rapid start, fluorescent type lamps with sound rated electronic ballasts mounted on the exterior of fume hood roof. Fixture shall be mounted in roof liner and sealed behind a laminated safety glass panel to isolate light fixture from fume hood interior. Interior of light fixture shall be white, high reflecting plastic enamel. Lamps shall be removable from the exterior of the fume hood.

18.11.8

Average illumination of work surface shall be at least 90 foot candles.

18.11.9

Lamps shall be provided with fume hood light fixtures.

18.11.10

Light fixture switch shall be toggle type mounted in front post of superstructure. Switch cover plate shall be stainless steel with a brushed finish and labeled “LIGHT”.

18.11.11

Receptacles shall be duplex, GFCI, grounding type, hospital grade. Provide flush, stainless steel, brushed finish receptacle cover plates.

18.11.12

Unless noted otherwise, receptacles shall be 120v AC, 20A.

18.11.13

Fume hood light fixture, switch and receptacles shall be pre-wired by the manufacturer to a junction box on the exterior roof of the fume hood for a single point power connection to the building electrical system.

18.12

Ventilation specifications for all fume hoods

18.12.1

VENTILATION CONNECTIONS

Fume hood exhaust collar shall be rectangular or round with a parabolic, bell shaped, or tapered entry at the connection to fume hood to minimize static pressure drop. Collar shall be constructed of type 316L stainless steel or steel with a reagent resistant coating.

18.12.2

For a fume hood installed over an acid storage base cabinet, a 1-1/2” diameter polypropylene vent pipe connecting from the rear of the base cabinet to the inside hood chamber behind the rear baffle plate shall be provided. The vent pipe penetration shall be sealed and the pipe shall extend a minimum of 1” above the fume hood work surface.

18.13

Safety monitor and alarm system specifications for all fume hoods

18.13.1

Acceptable safety monitors/alarms are:

• TSI, Model 8610
• Flow Safe, Model HAM-VFV
• TEL, Model AFA 1000
• University-approved equal

18.13.2

Safety monitor and alarm shall continuously monitor face velocity and provide audible and visual alarm if face velocity falls below low alarm setpoint or rises above high alarm setpoint.

18.13.3

The monitor shall have one set of dry contacts for connecting alarm to either set back sequence or building management system.

18.13.4

Monitor and velocity sensor shall be factory installed and prewired on the hood, complete with low voltage transformer and transformer cable.

18.13.5

The calibration of the monitor shall be completed in the field by the fume hood installer. Monitor shall be adjusted for a 40 fpm low alarm, 1000 fpm high alarm.

18.14

Signage specifications for all fume hoods

18.14.1

Instructional signage to explain the fume hood operational and safety instructions shall be provided. Signage shall be mounted on the front of each fume hood in plain view of user. Signage shall be plastic engraved laminate or directly applied silkscreen using chemical resistant epoxy ink. Signage shall have red background and white lettering in a font equal to Arial, 14 point.

See templates attached to the end of this specification for signage wording.

Sign shall also include manufacturer’s model number for the fume hood.

18.15

Manuals and training DVD specifications for all fume hoods

18.15.1

Contractor shall provide a professional quality DVD at least 15 minutes in length on proper hood usage. The DVD shall convey:

• The basic concept of a fume hood and how it serves to protect users.
• The function of the sash and its proper use.
• Safety rules for proper movement in the work zone.
• Safety rules for fume hood loading.
• A high volume smoke demonstration on the hood’s containment potential and how improper use can compromise containment.
• Fume hood alarm features and how the user should respond to these

18.15.2

Contractor shall provide a 8-1/2 x 11" sized, rigid plastic or stainless steel pocket permanently attached to the front of each fume hood for storage of operation and maintenance manuals.

18.15.3

Each fume hood shall be provided with its own copy of the fume hood operation and maintenance manual and the fume hood monitor/alarm operation and calibration manual that were approved during the shop drawing review. Note that these copies do not need to be the actual stamped and approved copies, but they must be duplicates of the shop drawing review copies that were stamped and approved. The manuals shall be provided in the pocket permanently attached to each fume hood.

18.15.4

A jacketed copy of the instructional training DVD shall be provided for each fume hood in the permanently attached pocket on the fume hood.

18.16

Installation specifications for all fume hoods

18.16.1

Installers shall be trained and certified by the manufacturer, and have five years or more experience in installation of laboratory fume hoods, casework and equipment of the type specified. Installers shall be knowledgeable with calibration procedures for the fume hood alarm and monitor specified.

18.16.2

Finished surfaces shall be protected from soiling or damage during handling and installation, covered with polyethylene film or other protective coating. All work surfaces shall be protected throughout construction period with 1/4 inch corrugated cardboard completely covering the top and securely taped to edges. Any tape used on fume hood surfaces shall be non-delaminating. Contractor shall be responsible for removal of taping adhesive. Sash and counterbalance mechanism shall be secured during shipping.

18.16.3

For hoods to be installed by the Contractor, the Contractor shall review all project conditions and building limitations such as doorway sizes, corridor widths, ceiling heights, and obstructions and shall determine any disassembly and re-assembly methods necessary for access of each fume hood into its final location. Any costs associated with disassembly, re-assembly and access to the fume hood final locations shall be the responsibility of the Contractor and shall be included in the contract price bid.

18.16.4

Contractor shall not deliver or install fume hoods until the following conditions have been met:

• Building areas requiring the installation of fume hoods shall be dry and not exposed to construction activities or adverse weather conditions which may damage finished materials.
• Interior building temperatures shall not register below 65 degrees F. in areas of fume hood installation to permit the proper curing of epoxy sealants and adhesives.
• Walls and partitions shall be in place and finished with at least the primer coat of paint. If finish painting is to take place after fume hood installation, Contractor shall protect fume hoods by covering and masking prior to commencement of painting.
• Overhead soffits and ceiling grid shall be in place and overhead lighting shall be installed and connected prior to fume hood installation.
• All flooring required to be placed under fume hoods and base cabinets shall be installed prior to material delivery.