NuAire FumeGard NU-156 Operation And Maintenance Manual
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NuAire FumeGard NU-156 Operation And Maintenance Manual

NuAire FumeGard NU-156 Operation And Maintenance Manual

Vertical laminar flow clean air wet process fume hood
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FumeGard Vertical Laminar Flow
Clean Air Wet Process Fume Hood
Model NU-156/E Series
Bench Model
Operation and Maintenance Manual
April, 2021
Revision 16
230VAC Only
Manufactured By:
NuAire, Inc.
2100 Fernbrook Lane
Plymouth, MN 55447
Toll-Free: 1-800-328-3352
In Minnesota: (763)-553-1270
Fax: (763)-553-0459
OM0089
Page 1 of 39

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Summary of Contents for NuAire FumeGard NU-156

  • Page 1 Clean Air Wet Process Fume Hood Model NU-156/E Series Bench Model Operation and Maintenance Manual April, 2021 Revision 16 230VAC Only Manufactured By: NuAire, Inc. 2100 Fernbrook Lane Plymouth, MN 55447 Toll-Free: 1-800-328-3352 In Minnesota: (763)-553-1270 Fax: (763)-553-0459 OM0089 Page 1 of 39...
  • Page 2 This Operation and Maintenance Manual has been prepared to reflect a standard version of NU-156/E FumeGard Vertical Laminar Flow Clean Air Fume Hood. NuAire offers a wide variety of polypropylene fume hoods to fit individual requirements. The FumeGard series is flexible, designed for selection with the options that meet your specific needs.
  • Page 3 FumeGard Vertical Laminar Flow Clean Air Wet Process Fume Hood Model NU-156/E Series Bench Model Operation and Maintenance Manual TABLE OF CONTENTS Section No. 1................. General Information Section No. 2................. Models and Features Section No. 3................. Warranty Disclaimer Section No. 4................. Shipments Section No.
  • Page 4 CONGRATULATIONS! You have just purchased one of the finest all polypropylene FumeGard Vertical Laminar Flow Clean Air Fume Hoods available. With proper care, maintenance and laboratory procedure, this Fume Hood will give you years of product protection from particulate contaminants and personnel protection from particulate, gas and vapors as meeting the containmenmt performance requirements of NSF/ANSI 49 and ASHRAE Standard 110.

  • Page 5: General Information

    1.0 General Information 1.1 Description NuAire’s all Polypropylene Model NU-156/E FumeGard Vertical Laminar Flow Wet Process Fume Hood is a bench module Fume Hood which utilizes the latest state-of-the-art technologies in laminar airflow design, materials and manufacturing processes. The modular constructed Fume Hood can be used anywhere space permits where product (work-in-process) and personnel protection are required for chemical research, microelectronics, semi-conductor design/development and/or production assembly processes.
  • Page 6 1.3 Explanation of Symbols Symbol Description Safety alert symbol indicates a potentially hazardous WARNING situation which, if not avoided, could result in death of serious injury. Safety alert symbol indicates a potentially hazardous CAUTION situation which, if not avoided, may result in minor or moderate injury.
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  • Page 8 2.0 Model and Features The NU-156/E FumeGard Vertical Laminar Flow Wet Process Fume Hood is manufactured in four standard widths: 4 ft., 5 ft., 6 ft. and 8 ft., with two standard work surface depths: 26” or 32”. (See also Specification Drawing BCD-05043.) Dimensions NU-156-4 ft.
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  • Page 12: Warranty

    However, damage can occur in any shipment and the following outlines the steps you should take on receipt of a NuAire FumeGard Fume Hood to be sure that if damage has occurred, the proper claims and actions are taken immediately.

  • Page 13: Installation Instructions

    5.0 Installation Instructions 5.1 Location Within the laboratory, production process, etc., the ideal location for the Fume Hood is away from personnel traffic lanes, air vents (in or out), doors and/or any other source of disruptive air currents. VENTALATION REGISTER (BLOCKED WHEN FACING FUME HOOD) FUMEGARD LOCATION...
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  • Page 16 All plumbing services are plumbed within the right or left chase with 1/2 inch flexible polypropylene tubing and compression fittings. Water service plumbing lines are rated at a maximum of 60 PSI (4.5 Bars) as tested at NuAire before shipment. Air and gas lines are tested at a 90 PSI (6.75 Bars) maximum.

  • Page 17: Makeup Air Requirements

    5.2.6 Exhaust/Supply Duct Installation Guidelines The exhaust/supply systems must provide conditions similar to that under which the Fume Hood was certified to meet its stated performance. The following guidelines should be observed when installing exhaust/supply air duct work of either existing plant exhaust systems, or a new exhaust system. 1) Adequate room air inflow to replace exhausted air.
  • Page 18 5.3 Testing Methods and Equipment After installation and prior to use, NuAire recommends that the Vertical Laminar Flow Clean Air Polypropylene Wet Process Fume Hood be tested or commissioned to factory standards. As part of testing, the certifier should go through the following initial checklist to assure all aspects of the installation are complete and ready for testing.
  • Page 19 Should the circuit breaker open (pop-out button will appear), merely press to reset. If the circuit breaker continually opens, a failure has occurred in the motor or solid-state speed controller. Consult a qualified repair technician or NuAire, Inc. for replacement. 6.1.4 Light switch The light switch provides on/off control for the LED light.
  • Page 20 6.1.9 Exhaust Digital Monitor General The exhaust digital monitor uses an integrated digital pressure transducer to monitor negative pressure. The monitor indicates through both a segment display and LED’s. The segment display is green and operates to + 0.01”w.g. sensitivity. The LED’s indicate acceptable pressure (green), caution or near alarm points to within 0.005”w.g.
  • Page 21 Operating Guidelines The intent herein is to present general operational guidelines that will aid in the use of the Laminar Flow Wet Process Fume Hood to control airborne contaminants of low to moderate risk as stated in Technical Report No. FPS 56500000001 prepared by Dow Chemical U.S.A.
  • Page 22 6.2.6 Minimize Blockage of Front/Rear Inlet Grills The personnel and product protection afforded by the NU-156 demands that the front and rear grills be kept free of all materials. The tests per NSF/ANSI 49 and ASHRAE110-2016 to determine the level of personnel and product protection are conducted with the grills unblocked.

  • Page 23: General Maintenance

    The prefilter replacement internal depends on the contaminant (large particles or lint) in the room - a typical period is every three months. NuAire does, however, recommend that the FumeGard have the integrity of the HEPA filters verified by a qualified technician after the unit has been initially installed.
  • Page 24 THIS WORK SHOULD BE DONE ONLY BY A QUALIFIED TECHNICIAN WHO CAN MEASURE THE AIRFLOW FROM THE FILTERS WITH A SUITABLE VELOMETER. NuAire provides one internal adjustment to balance the supply airflow within the Fume Hood. This is: Blower speed adjustment via control system.
  • Page 25 7.4 Filter Integrity Checks In order to check filter and filter seal integrity, the HEPA filter media and seals must be directly accessible by measuring instrument. The challenge material (i.e. PAO) should be supplied over the supply inlet for the supply filter and in the rear center of the workzone over the intake slots for the exhaust filter.
  • Page 26 TABLE 7.0 CERTIFICATION VALUES The following are recommended minimum/maximum Fume Hood airflow setpoints in order to maintain the Hood Performance rating for personnel protection. NuAire recommends, however, operation at the stated average flow for ease of maintenance and annual certification. Minimum...
  • Page 27 TABLE 7.1 Recommended Measurement Methods for Fume Hood Downflow & Inflow. Downflow Measurement The downflow velocity is measured on a grid scale in a horizontal plane 4 inches (102mm) above the bottom edge of the viewing window. Readings taken at least six inches (152mm) from perimeter walls. Downflow Velocity Profile (applicable on all units) A.
  • Page 28 Volume /min. (m Opening Area Alternate Procedure: The alternate procedure to determine inflow velocity is as follows. The inflow velocity is measured on a grid scale with the internal blower on and with in a 12” (30mm) cardboard tunnel extension taped too and the same size as the work access opening.

  • Page 29: Electrical/Environmental Requirements

    8.0 Electrical/Environmental Requirements 8.1 Electrical (Supply Voltage Fluctuations not to Exceed +/- 10%) NU-156-424/430 115 VAC, 60 Hz, 1 Phase, 4 Amps NU-156-524/530 115 VAC, 60 Hz, 1 Phase, 6 Amps NU-156-624/630 115 VAC, 60 Hz, 1 Phase, 6 Amps NU-156-824/830 115 VAC, 60 Hz,...

  • Page 30: Optional Equipment

    9.0 Optional Equipment Ground Fault Interrupter The duplex outlet may be wired with a Ground Fault Interrupting circuit (GFI). The GFI sensor detects a “leakage” of five milliamperes or greater between power and ground and interrupts current flow in 1/40 of a second; fast enough to prevent injury to personnel.
  • Page 31 10.0 Disposal and Recycle Cabinets that are no longer in use and are ready for disposal contain reusable materials. ALL components with the exception of the HEPA filters may be disposed and/or recycled after they are known to be properly disinfected. ...
  • Page 32 If an external surface static charge develops, spraying an anti-static solution on the affected area will eliminate the problem. NOTE: NuAire does not offer any product warranty with respect to cleaning material compatibility. USE AT YOUR OWN RISK! The information provided above is from raw material suppliers and known general source documents for use to develop application cleaning SOP’s.
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  • Page 36: Replacement Parts List

    12.0 REPLACEMENT PARTS LIST The following is a list of replacement parts. For replacement of electrical parts, refer to the electrical schematic. Please consult NuAire, Inc. for parts not listed. To order, specify: model no., serial no. and part no. Replacement Parts List Model No.
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