Thermo Forma 3911 Operating And Maintenance Manual
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Thermo Forma 3911 Operating And Maintenance Manual

Environmental chamber
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Models: 3911, 3913, 3940 and 3949
Forma Environmental Chamber
Operating and Maintenance Manual
Manual No: 7043940 Rev. 2

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Summary of Contents for Thermo Forma 3911

  • Page 1 Models: 3911, 3913, 3940 and 3949 Forma Environmental Chamber Operating and Maintenance Manual Manual No: 7043940 Rev. 2...
  • Page 2 Thermo Electron Corporation makes no representa- tions or warranties with respect to this manual. In no event shall Thermo be held liable for any damages, direct or incidental, aris- ing out of or related to the use of this manual.
  • Page 3 Environmental Chamber ______________________________________________________________________________Safety Important operating and/or maintenance instructions. Read the accompanying text carefully. Ce symbole attire l'attention de l'utilisateur sur des instructions importantes de fonctionnement et/ou d'entretien. Il peut être utilisé seul ou avec d'autres symboles de sécurité. Lire attentivement le texte d'accompagnement. Wichtige Betriebs- und/oder Wartungshinweise.
  • Page 4 Environmental Chamber _________________________________________________________________________Service...

  • Page 5: Table Of Contents

    Environmental Chamber ___________________________________________________________________Table of Contents Table of Contents Section 3 - Start Up and Operation ....3 -1 Section 1 - Receiving ......1 - 1 3.1 The Control Panel .

  • Page 6: Section 1 - Receiving

    For products shipped F.O.B. Marietta, Ohio, the responsi- packed prior to shipment and all necessary precautions were bility of Thermo Electron Corporation ends when the merchan- taken to ensure its safe arrival. Immediately upon receipt, dise is loaded onto the carrier’s vehicle.

  • Page 7: Section 2 - Installation And Set-Up

    Environmental Chamber ________________________________________________________________Installation and Set-Up d. Leveling the Unit Section 2 - Installation and Set-Up Place a bubble-type level on a shelf inside the incubator. 2.1 Location Adjust the feet as needed; counterclockwise to lengthen or clockwise to shorten. Level the unit front-to-back and left-to- a.

  • Page 8: Alternate Water Supply For Humidity System

    Environmental Chamber ________________________________________________________________Installation and Set-Up The water inlet is the 1/8” FPT connection located on the rear top center of the incubator. A 1/4” hose fitting is provided for a hose connection, if desired. Water inlet pressure must not exceed 40 PSI. A manual shut-off valve should be installed between the main water supply and the incubator.

  • Page 9: Start-Up

    Environmental Chamber ________________________________________________________________Installation and Set-Up 2.5 Start-Up 2.7 Setting the Undertemp Safety Thermostat When the humidification system is operational, the incuba- Allow the chamber temperature and humidity to stabilize, tor may be started. Preset the controls as follows: then set the undertemp safety thermostat as follows: Overtemp Safety Thermostat .

  • Page 10: Changing The Chart Paper

    Environmental Chamber ________________________________________________________________Installation and Set-Up b. Changing the Chart Paper 2.10 IR CO Option 1. Press the Change Chart button (#3) and hold it for 1 sec- This section applies to units with the IR CO option only. ond until the pen begins to move to the left of the chart. See Figure 2-3.

  • Page 11: Co2 Control And Indicators

    Environmental Chamber ________________________________________________________________Installation and Set-Up b. Setting the CO Content The Watlow SD CO controller's upper display shows the actual CO content inside the chamber. The lower display shows the CO setpoint. Before setting the CO content, allow the chamber tempera- ture and humidity to stabilize.

  • Page 12: Section 3 - Start Up And Operation

    Environmental Chamber_________________________________________________________________Start-Up and Operation Section 3 - Start Up and Operation Figure 3-1, Environmental Chamber Control Panel shown with optional CoBex Recorder and optional control 3.1 The Control Panel Figure 3-3 Main Power Switch and Indicator Light (Figure 3-2) The main power switch controls power to the incubator. Defrost Switch and Indicator Light (Figure 3-3) The main power indicator lights when the power switch is on and the unit is receiving power.
  • Page 13 The undertemp safety thermostat should be set slightly lower than the operating temperature of the incubator. In the Figure 3-5 event of an undertemp condition, the undertemp safety thermo- Humidity Alarm Setpoints stat will: The humidity controller’s high and low limits are set by •...

  • Page 14: Setting The Operating Temperature

    Environmental Chamber_________________________________________________________________Start-Up and Operation 3.2 Setting the Operating Temperature (Figure 3-6) 3.4 Air Exchange Ventilator Caps The Watlow temperature Air exchange for the incubator is regulated through the controller’s upper numerical manually adjustable intake and exhaust ventilator caps located display shows the actual temperature on the top of the cabinet.

  • Page 15: Section 4 - Routine Maintenance

    Environmental Chamber__________________________________________________________________Routine Maintenance Section 4 - Routine Maintenance 4.1 Cleaning the Incubator De-energize all potential sources of energy to this unit and lockout/tagout their controls. (O.S.H.A. Regulation, Section 1910-147.) The continued cleanliness of the stainless steel used in this unit has a direct effect on the appearance and operation of the unit.
  • Page 16 The following is a condensed list of preventive maintenance requirements. See the specified section of the instruction manual for further details. Thermo Electron has qualified service technicians, using NIST traceable instruments, available in many areas. For more information on Preventive Maintenance or Extended Warranties, please contact us at the number below.
  • Page 17 Preventive Maintenance for Environmental Chambers Refer to Manual Section Action Daily Weekly Yearly Inspect door latch, hinges and door gasket seal Check air exchange ventilator caps for adjustment; open or close as required Perform a complete decontamination procedure. Wipe down interior, shelves, Between Experiments side panels with disinfectant.

  • Page 18: Section 5 - Service

    Section 5 - Service 9. Remove the two screws that hold the overtemp assembly to the control panel. 10. Disconnect the two wires from the back of the thermo- stat assembly. 11. Pull the entire assembly from the panel, and remove the unit.

  • Page 19: Removing Mechanical Lockout

    Environmental Chamber _____________________________________________________________________________Service a. Removing Mechanical Press the Mode key to scroll through the menus until the Lockout lower displays show “Loc” (Figure 5-5). Press the Down arrow key until the “2” becomes “0” (zero) as shown in Figure 5-6. Make sure the unit is turned off.

  • Page 20: Replacing The Optional Recorder And Probe(S)

    Environmental Chamber _____________________________________________________________________________Service To turn hardware and software lockout back on: 6. Looking at the top and 1. Press the Up and Down Arrow keys simultaneously for right side of the con- 3 seconds. The word “InPt” will appear in the upper dis- troller module, locate play, and “set”...

  • Page 21: Calibrating The Recorder

    Environmental Chamber _____________________________________________________________________________Service a. Calibrating the Recorder De-energize all potential sources of energy to this unit and lockout/tagout their controls. Place an accurate thermometer(s) in the chamber next to the recorder’s probe(s). After about three minutes, compare the Remove all contents from the incubator, shut it off, and thermometer with the chart recorder.

  • Page 22: Co2 Controller Calibration

    Environmental Chamber _____________________________________________________________________________Service 5.8 CO Controller Calibration If it should become necessary to calibrate the CO con- troller, perform the following procedure. Start from the standard operating display (setpoint in bot- tom display, actual CO reading in the upper display). 1.
  • Page 23 Environmental Chamber ___________________________________________________________________________Service WATLOW 982 CONFIGURATION RECORD CUSTOMER: 3920 & 3940 (RELEASE 9) JOB NUMBER: SERIAL NUMBER: CONTROL TYPE: TEMPERATURE (RTD) PREPARED BY: DATE: 11/05/03 COMPLETED BY: DATE: Switch Configuration: (1)*** Main Boards Input 1 Board Software Configuration: Setup Menus StPt (2)**** gLbL: C_F Anun...
  • Page 24 Environmental Chamber ___________________________________________________________________________Service WATLOW 982 CONFIGURATION RECORD CUSTOMER: 3920 & 3940 (RELEASE 9) JOB NUMBER: SERIAL NUMBER: CONTROL TYPE: HUMIDITY (0 - 100%) PREPARED BY: DATE: 11/05/03 COMPLETED BY: DATE: Switch Configuration: (1)*** Main Boards Input 1 Board Software Configuration: Setup Menus StPt (2)**** gLbL: C_F...
  • Page 25 Environmental Chamber ___________________________________________________________________________Service WATLOW SD CONFIGURATION RECORD CUSTOMER: 3920 & 3940 JOB NUMBER: UNT SERIAL NUMBER: CONTROL TYPE: PREPARED BY: DATE: 11/20/03 COMPLETED BY: DATE: SETUP PAGE: Press UP and DOWN arrow for thee seconds. SP.hı 20.0 PSh 1 100.0 dSP 2 P.dec Ftr.E...

  • Page 26: Section 6 - Specifications

    Environmental Chamber _______________________________________________________________________Specifications Section 6 - Specifications Humidity Temperature Control ±5% RH Control ±0.1°C @ +37°C (98.6°F) Range Above ambient to 95% Range 0°C (32°F) to +60°C (140°F) Sensor Thin film polymer Sensor Controller Electronic, direct set in % RH Controller Digital electronic proportional Setpoint...

  • Page 27: Section 7 - Spare Parts

    Environmental Chamber _________________________________________________________________________Spare Parts Section 7 - Spare Parts Part No. Description 290163 RTD Temperature Sensor 230066 Fuse, Ceramic 10A 350V 400051 Power Supply 290162 RH Sensor 231221 Watlow 982 Temperature Controller 231222 Watlow 982 Humidity Controller 285614 20A Fuse 137022 Heater (steam) 403940...
  • Page 29 Environmental Chamber __________________________________________________________________Electrical Schematics 9 - 1...
  • Page 30 Environmental Chamber __________________________________________________________________Electrical Schematics 9 - 2...
  • Page 31 Environmental Chamber __________________________________________________________________Electrical Schematics 9 - 3...
  • Page 32 Environmental Chamber __________________________________________________________________Electrical Schematics 9 - 4...
  • Page 33 Environmental Chamber __________________________________________________________________Electrical Schematics 9 - 5...
  • Page 34 Environmental Chamber __________________________________________________________________Electrical Schematics 9 - 6...
  • Page 35 Thermo Electron Corporation Controlled Environment Equipment Millcreek Road, P.O. Box 649 Marietta, Ohio 45750 U.S.A. Telephone (740) 373-4763 Telefax (740) 373-4189...

This manual is also suitable for:

Forma 3913Forma 3940Forma 3949

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