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Models:
1284, 1285, 1286, 1287,
1288, 1290 and 1291
Biological Safety Cabinets
Class II, Type A/B3
Operating and Maintenance Manual
Manual No: 7001284 Rev. 3

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Summary of Contents for ThermoForma 1284

  • Page 1 Models: 1284, 1285, 1286, 1287, 1288, 1290 and 1291 Biological Safety Cabinets Class II, Type A/B3 Operating and Maintenance Manual Manual No: 7001284 Rev. 3...
  • Page 2 Model 1280/1290 Series ___________________________________________________________________________ Read This Instruction Manual. Lamps, thermometers and thermoregulators contain mercury. Do not put in trash! Recycle or Failure to read, understand and follow the instructions in dispose as hazardous waste. this manual may result in damage to the unit, injury to operat- ing personnel, and poor equipment performance.
  • Page 3 Model 1280/1290 Series ___________________________________________________________________________Safety Alerts the user to important operating and/or maintenance instructions. May be used alone or with other safety sym- bols. Read the accompanying text carefully. Potential electrical hazards. Only qualified persons should perform the instructions and procedures associated with this symbol.
  • Page 4 Model 1280/1290 Series ___________________________________________________________________________Service...
  • Page 5: Table Of Contents

    3.2 Power Connection ......3 - 1 9.1 Replacing the Blower Motor (1284 Series) ..9 - 1 3.3 Plumbing Connection .
  • Page 6: Section 1 - Receiving

    1.1 Unpacking List 2.1 Description Included with the installation/operation manual are four The Models 1284, 1285, 1286, 1287, 1288, 1290 and 1291 identification index buttons. These buttons may be used to iden- are Class II, Type A/B3 cabinets. The “Type A/B3” designation tify the type of service supplied to the service valves.
  • Page 7: Section 3 - Installation

    The exhaust system must be capable of handling the vol- 3/8” FPT coupling. Identification index buttons are supplied. ume of air passing through the cabinet. Models 1284, 1285 and The cabinet will accommodate four service valves. An 1288 have an air volume of 356-390 CFM. Models 1286, 1287, additional two service valves may be purchased from Thermo 1290 and 1291 have an air volume of 530-581 CFM.
  • Page 9: Remote Alarm Contacts

    Model 1280/1290 Series ________________________________________________________________________Installation 3.5 Remote Alarm Contacts (Models 1288, 1290 and 1291) This area contains hazardous voltages. The proce- dure should be done by qualified personnel only. For facilities requiring remote alarms connected to biologi- cal safety cabinets, a relay with normally open and normally closed contacts is installed in the blower electrical circuit.
  • Page 11: Section 4 - Operation

    Model 1280/1290 Series _________________________________________________________________________Operation Section 4 – Operation 4.1 Control and Indicating Devices (Refer to Figures 4-1, 4-2, and 4-3) Before operating the cabinet, become familiar with the fol- lowing items: Blower Switch- The blower switch controls power to the inter- nal blower.
  • Page 12 Model 1280/1290 Series __________________________________________________________________________Operation Alarm By-pass Switch - The Alarm By-pass switch silences the audible “Window Above 10 Inch” alarm for 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.
  • Page 13 Depress the button to reset the circuit breaker. The maximum load is 5 amps total for Models 1284, 1285 and 1288. Models 1286, 1287, 1290 and 1291 have a maximum load of 2 amps total.
  • Page 14: Section 5 - General Cautions

    Model 1280/1290 Series ____________________________________________________________________Cabinet Start-Up Section 5 - General Cautions Section 6 - Cabinet Start-Up 6.1 General Recommendations 5.1 Caution Notes • Keep movement in the room to a minimum when the cabi- • Following initial installation, the unit must be thoroughly net is in use.
  • Page 15: Section 7 - Troubleshooting

    Model 1280/1290 Series ________________________________________________________________Routine Maintenance Section 7 - Troubleshooting Section 8 - Routine Maintenance 7.1 Troubleshooting Guide The following is a guide to troubleshooting the system. If a contaminated area of the cabinet must be entered to determine and/or resolve the source of a particular problem, the cabinet 8.1 Checking the Static Pressure Gauge “Zero”...
  • Page 16: Biological Safety Cabinet Test Grids

    1. Layout test grids (refer to Section 8.4). 8.4 Biological Safety Cabinet Test Grids 2. Start-up the cabinet and allow it to run for at least twen- a. 4-foot Series, Models 1284, 1285, and 1288 ty minutes. 3. Take airflow measurements. If airflow specifications are not sufficient, open the control panel and check the volt- age on the power switch.
  • Page 17: Section 9 - Service

    Recertify the cabinet after servicing. Before service is to be performed on the cabinet, the unit must be decontaminated! 9.1 Replacing the Blower Motor (Models, 1284, 1285 and 1288, 4-foot) a. Reversing the motor wiring (4 foot models only) 1.
  • Page 18: Replacing The Blower Motor (1286 Series)

    Model 1280/1290 Series ___________________________________________________________________________Service 9.3 Replacing the Filters, All Models 11. Unbolt the four-point motor mounting bracket from the blower housing. 12. Disconnect the motor wiring harness at the quick-con- Dispose of the old filters per established laborato- nect plug. ry practices.
  • Page 19: Section 10 - Specifications

    Section 10 – Specifications • Latches connecting the plenum to the blower housing have a safety lock that must be released prior to opening the 10.1 Models - 1284, 1285, and 1288 (4’ Cabinet with latch. Sliding Window) • When tightening the filter hold-down nuts, the springs...
  • Page 20 Model 1280/1290 Series ______________________________________________________________________Specifications Lights (2) Fluorescent 60W, 1291 Main/Outlets (5): 100VAC, 1 Phase, (F48T12/CWX/HO) 2 Wire, 60 Hz, 16 FLA (1) Optional UV 30W, (G30T8) (Total amps include 2A receptacle) Germicidal Lamp Circuit Breaker: 20 Amps Receptacle - NEMA 5-15R Blower Motor 3/4 HP, 1625 RPM Exhaust System Volume...
  • Page 21: Section 11 - Accessories

    Stock # Description 275012 Transformer, 1.5KVA, 240/120V 460052 European Plug, 230V, 16A The parts for the Model 1288 are the same as the Model 1284 with the addition of: Stock # Description 420098 Transformer, 12VA, 115V primary/12.6V secondary 12 -1...
  • Page 22 Model 1280/1290 Series __________________________________________________________________________Parts List 12.2 Model 1286 The parts for the Model 1291 are the same as the Model 1286 with the addition of: Stock # Description Stock # Description 156109 HP Blower Motor (1500 RPM) 420098 Transformer, 12VA, 115V 170045 Capacitor, Motor 25MFD, 370V primary/12.6V secondary...
  • Page 44 Millcreek Road, P.O. Box 649 Marietta, Ohio 45750 U.S.A. Telephone (740) 373-4763 Telefax (740) 373-4189...

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