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Thermo 1284 Series Operating And Maintenance Manual

Class ii, a2 biological safety cabinet
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Model 1284 Series
Class II, A2 Biological Safety Cabinet
Operating and Maintenance
Manual 7021284 Rev. 3

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Summary of Contents for Thermo 1284 Series

  • Page 1 Model 1284 Series Class II, A2 Biological Safety Cabinet Operating and Maintenance Manual 7021284 Rev. 3...
  • Page 2 Thermo Electron Corporation makes no representations or warranties with respect to this manual. In no event shall Thermo be held liable for any damages, direct or incidental, arising out of or related to the use of this manual.
  • Page 3 This product is required to comply with the European Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the WEEE symbol. Thermo Electron has contracted with one or more recycling/disposal companies in each EU Member State European Country, and this product should be disposed of or recycled through them.
  • Page 4 Preface Thermo Electron Corporation Thermo Electron Corporation Model 1284 Series...

  • Page 6: Table Of Contents

    Start-Up Procedure ........7-2 Thermo Electron Corporation Model 1284 Series...
  • Page 7 Electrical Schematics ........14-1 Warranty Information Model 1284 Series Thermo Electron Corporation...

  • Page 8: Packing List

    Also included in a separate bag is the drain valve. Attached to the valve is a small Allen wrench used for calibrating the Static Pressure Gauge. This Allen wrench should be kept with the manual at all times. Thermo Electron Corporation Model 1284 Series...

  • Page 10: Introduction

    Room air entering the work zone, through the front access opening, completes the air barrier at the unit face and is responsible for the containment properties of the unit. All work must be performed beyond the intake grille, on the solid work tray. Thermo Electron Corporation Model 1284 Series...

  • Page 12: Installation

    Ensure that all four leveling feet are fully flush against the floor to prevent vibration. Warning Model 1284/1285 weighs 735 lbs. Model 1286/ 1287 weighs 940 lbs. Have sufficient personnel available to lift it. ▲ Thermo Electron Corporation Model 1284 Series...

  • Page 13: Power Connection

    The Universal Plumbing option is factory installed. External connection Universal Plumbing (1/4” NPT) to the unit is available on the top and the underside of the Option cabinet, as well as the standard side connection. See Figure 3-2. Figure 3-2. Universal Piping Model 1284 Series Thermo Electron Corporation...

  • Page 14: Exhaust Requirements

    Nominal 487 CFM, when sizing to exhaust 30% more air (than the cabi- net exhausts) 6 foot models - Nominal 556 CFM Nominal 722 CFM, when sizing to exhaust 30% more air (than the cabi- net exhausts) Thermo Electron Corporation Model 1284 Series...
  • Page 15 Figure 3-3. Transition Specs...

  • Page 16: Certification Testing

    Biohazard Cabinet Field Certifier Program NSF International PO Box 130140 789 N. Dixboro Rd Ann Arbor, MI 48113-0140 Telephone (734) 769-8010 Or (800) NSF-MARK Fax (734) 769-0109 http://www.nsf.org/Certified/Biohazard-Certifier Thermo Electron Corporation Model 1284 Series...
  • Page 17 Select Certification Companies located under the Services and Support heading at www.thermo.com/forma. If you do not find someone listed in your area, please contact the Technical Services Department for additional references. Note Unless certification was expressly called for in the specification, quotes and/or purchase order, the cost for this on-site testing is to be paid for by the customer.

  • Page 18: Operation

    Alarm By-pass Switch - The Alarm By-pass switch silences the audible “Window Above 10 Inch” alarm for approximately five minutes. The red visual indicator remains illuminated. The alarm rings-back to remind the operator that the window is still open more than 10 inches. Thermo Electron Corporation Model 1284 Series...
  • Page 19 Note The static pressure gauge should not be used as a direct measure of airflow. ▲ Figure 5-1. Control Panel Figure 5-2. Front View of 4 ft. Unit with Components Indicated Model 1284 Series Thermo Electron Corporation...
  • Page 20 The maximum load is 5 amps total for Models 1284 and 1285. Models 1286 and 1287 have a maximum load of 2 amps total. Models 1285 and 1287 are equipped with 2 single European 230V receptacles. Figure 5-4. Locations Thermo Electron Corporation Model 1284 Series...
  • Page 21 Warning If a spill occurs, immediately consult a biological safety officer or other qualified individual for proper procedures. To contain a spill, connect a sealed hose from the drain valve to a sealed container. ▲ Model 1284 Series Thermo Electron Corporation...
  • Page 22 10-inch level, a red light and audible alarm warn that an unsafe condition exists. Warning When work is being performed in the cabinet, the sliding window must be at the 10-inch position to avoid contamination to product and personnel. ▲ Thermo Electron Corporation Model 1284 Series...
  • Page 24 • None of the perforations in the work area may be covered or blocked, as airflow will be disrupted and contamination may occur. • Paper catches should always be kept free of debris. Thermo Electron Corporation Model 1284 Series...

  • Page 25: General Cautions And Cleaning

    ▲ Caution Do not use strong alkaline or caustic agents. Stainless steel is corrosion-resistant, not corrosion-proof. Do not use solutions of sodium hypochlorite (bleach) as they may also cause pitting and rusting. ▲ Model 1284 Series Thermo Electron Corporation...

  • Page 26: Cabinet Start-Up

    Cabinet Checklist 1. Verify that the Drain valve is closed (the handle turned horizontal). 2. Verify that all service valves are closed. 3. Verify that the cardboard exhaust filter protector has been removed. Thermo Electron Corporation Model 1284 Series...

  • Page 27: Start-Up Procedure

    2. Turn the light on. 3. Check the intake and exhaust grilles to ensure they are not blocked. 4. Turn the blower on. 5. Place everything needed into the cabinet. 6. Place the viewing window at 10 inches. Model 1284 Series Thermo Electron Corporation...

  • Page 28: Troubleshooting

    • Make sure the sliding window is within approximately 3/8” of the fully closed position. • Check lamp pins and socket ends for contact. • U.V. lamp is defective. • Starter is defective for the UV light. • Check UV interlock switch adjustment. Thermo Electron Corporation Model 1284 Series...
  • Page 29 Problem: Loud screeching noise Possible causes: • Bearings are bad in the motor blower assembly. • Blower wheel is rubbing against the housing. Problem: No power at GFCI outlet Possible cause: • Switch requires reset. Model 1284 Series Thermo Electron Corporation...

  • Page 30: Routine Maintenance

    2. Remove the front cover from the static pressure gauge by grasping the front cover and turning it counterclockwise. 3. Locate the Allen-type adjustment screw beside the gauge needle. 4. Turn the adjustment screw counterclockwise to lower the reading; clockwise to raise it. Thermo Electron Corporation Model 1284 Series...

  • Page 31: Adjusting The Damper

    Clockwise adjustment of this pot increases voltage supply to the blower motor, counterclockwise adjustment lowers the voltage supply. Adjust it 2-3 volts, up or down, depending upon the airflow required. Retake the airflow measurements. Figure 9-1. Pot Location Figure 9-2. Terminal Locations Model 1284 Series Thermo Electron Corporation...

  • Page 32: Biological Safety Cabinet Test Grids

    Figure 9-3. Damper Control Note Copies of the factory airflow test sheets are available in the Specifications section. ▲ Biological Safety Cabinet Test Grids Figure 9-4. 4 ft. Models 1284 and 1285 Thermo Electron Corporation Model 1284 Series...
  • Page 33 Routine Maintenance BSC Test Grids (continued) Figure 9-5. 6 ft. Models 1286 and 1287 Note A list of certification companies is included on the Thermo Electron Corporation website (thermo.com), or call the Technical Services department. See Page iii. ▲ Model 1284 Series...

  • Page 34: Blower Control

    • Replace the fuses - P/N 230182, 7 Amp, ¼” x 1¼”, P/N 230166, 3 Amp, ¼” x 1¼” (Spare fuses (2) are located in a bracket on the inside of the control panel.) ▲ Thermo Electron Corporation Model 1284 Series...

  • Page 35: Uv Switch Adjustment Procedure

    Note UV light does not illuminate instantaneously. ▲ Caution These lamps lose their effectiveness over a period of time and should be replaced when intensity drops below the optimum level (approximately every six months). ▲ Model 1284 Series Thermo Electron Corporation...

  • Page 36: Service

    Lift and remove the panel. Remove the supply filter. 11. Remove the three bolts toward the front of the cabinet that connect the blower housing bracket to the top of the cabinet. Thermo Electron Corporation Model 1284 Series 10-1...

  • Page 37: Replacing Filters, All Models

    2. Close the window. 3. Remove the thumbscrews securing the lamp housing cover. Remove the cover. 4. Open the control panel. 5. Remove the screws securing the dress panel. Remove the panel and set it aside. 10-2 Model 1284 Series Thermo Electron Corporation...
  • Page 38 18. Tighten the hex nuts to secure the new exhaust filter in position. 19. Install the new supply filter with the gasket side down. 20. Reinstall the supply plenum and assemble the components in reverse order. The cabinet must be recertified after filter replacement. Thermo Electron Corporation Model 1284 Series 10-3...
  • Page 39 Ensure that the vinyl tubing from the Mag gauge is reconnected to the supply plenum. • The Velcro connection on the exhaust boot must be smooth with no gaps or loose spots to ensure proper sealing. 10-4 Model 1284 Series Thermo Electron Corporation...

  • Page 40: Specifications

    (1) Supply HEPA Filter (48”W x 18”F-B x 5-7/8”H) (1) Exhaust HEPA Filter (18”W x 24”F-B x 5-7/8”H) Lights (2) Fluorescent 32W, (F32/T8) (1) Optional UV 30W, (G30T8) Germicidal Lamp Blower Motor 3/4 HP, 1625 RPM Drain Pan Capacity 18.7 Gallons Thermo Electron Corporation Model 1284 Series 11-1...
  • Page 41 (1) Supply HEPA Filter (72”W x 18”F-B x 5-7/8”H) (1) Exhaust HEPA Filter (24”W x 24”F-B x 5-7/8”H) Lights (2) Fluorescent 32W, (F32/T8) (1) Optional UV 30W, (G30T8) Germicidal Lamp Blower Motor 3/4 HP, 1500 RPM Drain Pan Capacity 27.0 Gallons 11-2 Model 1284 Series Thermo Electron Corporation...

  • Page 42: Environmental Conditions

    Pollution degree describes the amount of conductive pollution present in the operating environment. Pollution degree 2 assumes that normally only non-conductive pollution such as dust occurs with the exception of occasional conductivity caused by condensation. Thermo Electron Corporation Model 1284 Series 11-3...
  • Page 43 30° angle from front nosing. Multiply K factor of 1.10 by average velocity reading. Three inch access opening 1.021 sq. ft. Ten inch access opening 3.403 sq. ft. Acceptable range for face velocity 105-115 LFPM TESTED BY: DATE: 11-4 Model 1284 Series Thermo Electron Corporation...
  • Page 44 30° angle from front nosing. Multiply K factor of 1.08 by average velocity reading. 3” access opening 1.516 sq. ft. 10” access opening 5.052 sq. ft. Acceptable range for face velocity 105-115 LFPM TESTED BY: DATE: Thermo Electron Corporation Model 1284 Series 11-5...

  • Page 48: Accessories

    Service Valve Kit, use w/ Universal Piping 191597 Universal Piping Kit* 191620 ADA Control Panel* 191496 Caster Pan, BSC Stand (customer installed) 191684 Low Flow Alarm 191780 4 ft. Anchoring System* 191788 6 ft. Anchoring System* 191794 *factory installed Thermo Electron Corporation Model 1284 Series 12-1...

  • Page 50: Parts List

    The parts for the Model 1285 are the same as those listed above with the addition of the following: Stock # Description 275012 Transformer, 1.5KVA, 240/120V 460270 European Cord, 230V, 16A 230203 Circuit Breaker/Switch 13A Thermo Electron Corporation Model 1284 Series 13-1...
  • Page 51 Sash Alarm Board The parts for the Model 1287 are the same as Model 1286 with the addition of: Stock # Description 275012 Transformer, 1.5KVA, 240/120V 430270 European Cord, 230V, 16A 230179 Circuit Breaker/Switch 10A 13-2 Model 1284 Series Thermo Electron Corporation...

  • Page 52: Filter Pressure Drop Conversion

    A filter rating of 0.31” of water at 352 CFM needs to be converted to 530 CFM. The formula is as follows: 0.31 = Solving for x (the needed pressure drop at 530 CFM) x = (0.31)*530 x = 0.47” of water (rounded) Thermo Electron Corporation Model 1284 Series 13-3...
  • Page 54 Section 14 Electrical Schematics Thermo Electron Corporation Model 1284 Series 14-1...
  • Page 55 Section 14 Electrical Schematics 14-2 Model 1284 Series Thermo Electron Corporation...
  • Page 56 Section 14 Electrical Schematics Thermo Electron Corporation Model 1284 Series 14-3...
  • Page 58 Section 14 Electrical Schematics 14-4 Model 1284 Series Thermo Electron Corporation...
  • Page 59 Section 14 Electrical Schematics Thermo Electron Corporation Model 1284 Series 14-5...
  • Page 60 Section 14 Electrical Schematics 14-6 Model 1284 Series Thermo Electron Corporation...
  • Page 62 Section 14 Electrical Schematics Thermo Electron Corporation Model 1284 Series 14-7...
  • Page 63 Section 14 Electrical Schematics 14-8 Model 1284 Series Thermo Electron Corporation...
  • Page 64 Section 14 Electrical Schematics Thermo Electron Corporation Model 1284 Series 14-9...
  • Page 66 Section 14 Electrical Schematics 14-10 Model 1284 Series Thermo Electron Corporation...
  • Page 67 Section 14 Electrical Schematics Thermo Electron Corporation Model 1284 Series 14-11...
  • Page 68 Section 14 Electrical Schematics 14-12 Model 1284 Series Thermo Electron Corporation...
  • Page 70 The Technical Services Department must give prior approval for return of any component or equipment. At Thermo’s option, all non-conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destination.
  • Page 71 The Technical Services Department must give prior approval for return of any component or equipment. At Thermo’s option, all non-conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destination.
  • Page 72 For your convenience we have included a partial list of agencies that perform certification on our website. If you do not find someone listed in your area, please contact Thermo Forma’s technical services department for additional references. Thermo Electron Corporation...
  • Page 74 Thermo Electron Corporation Controlled Environment Equipment 401 Millcreek Road Marietta, Ohio 45750 United States www.thermo.com...

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