Thermo Electron 3920 Operating And Maintenance Manual Download

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Model: 3920

Forma Environmental Chamber

Operating and Maintenance Manual

Manual No: 7043920 Rev. 3

Summary of Contents for 3920

Page 1: ...Model 3920 Forma Environmental Chamber Operating and Maintenance Manual Manual No 7043920 Rev 3 ...

Page 2: ...it describes are subject to change with out notice Thermo Electron makes no representations or war ranties 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 MANUAL NUMBER 7043920 3 22678 IN 3229 1 17 05 Removed 270129 from terminals 15 and 16 temp control aks 2 22454 IN 3208 9 14 04 Watlow SD...

Page 3: ...procedimientos asociadas con este simbulo Equipment being maintained or serviced must be turned off and locked off to prevent possible injury Risques potentiels liés à l énergie L équipement en entretien ou en maintenance doit être éteint et mis sous clé pour éviter des blessures possibles Geräte an denen Wartungs oder Servicearbeiten durchgeführt werden müssen abgeschaltet und abgeschlossen wer d...

Page 4: ...Environmental Chamber _________________________________________________________________________Service iii ...

Page 5: ...el can provide precise calibrations as a billable service at your location Calibration after a warranty repair is covered under the warranty Damage resulting from use of improper quality water chemicals or cleaning agents detrimental to equipment materials Service calls for improper installation or operating instructions Corrections to any of the following are billable services 1 electrical servic...

Page 6: ...00140 IR CO2 Option 2 3 a Connecting the CO2 Source Figure 2 4 2 3 b Setting the CO2 Content 2 4 c CO2 Control and Indicators 2 4 Section 3 Start Up and Operation 3 1 3 1 The Control Panel 3 1 3 2 Setting the Operating Temperature Figure 3 4 3 2 3 3 Air Exchange Ventilator Caps 3 2 3 4 Heatless Dryer P N 1900139 optional 3 2 Section 4 Routine Maintenance 4 1 4 1 Cleaning the Incubator 4 1 Section ...

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Page 8: ...adequately describe such evi dence of loss or damage may result in the carrier refusing to honor a damage claim Immediately call the delivering carrier and request that their representative perform an inspection Do not discard any of the packing material and under no circum stances move the shipment from the receiving area 1 3 Responsibility for Shipping Damage For products shipped F O B Marietta ...

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Page 10: ...nnel by locating the rivet into a slotted hole far end first Pull the channel toward the front and slide the front rivet on the channel into the slotted hole and press down Make sure that the channels are oppo site each other so that the installed shelf will be level d Leveling the Unit Place a bubble type level on a shelf inside the incubator Adjust the feet as needed counterclockwise to lengthen...

Page 11: ...ted before normal operation under the main temperature controller can be resumed Note When the chamber temperature control setpoint is changed the overtemp safety thermostat must be reset to accom modate the change Note The overtemp control is not directly calibrated The num bers on the dial are for reference only 2 7 Setting the Undertemp Safety Thermostat Allow the chamber temperature and humidi...

Page 12: ... is capable of recording both temperature and humidity and printing alphanumeric chart data on blank heat sensitive chart Refer to the Honeywell Configuration Record at the end of Section 5 and the supplemental Honeywell Recorder manual 2 10 IR CO2 Option This section applies to units with the IR CO2 option only a Connecting the CO2 Source Figure 2 5 For the most economical use the liquid CO2 supp...

Page 13: ...Indicators Sample Port Figure 2 6 The sample port is used for checking CO2 percentage in the incubator chamber by an independent test instrument such as with a Fyrite or similar CO2 test instrument To prevent CO2 loss the sample port must be capped when it is not in use CO2 Alarm Figure 2 6 The CO2 alarm is factory set to activate when the chamber CO2 content deviates from configured alarm set poi...

Page 14: ...r to the refriger ation system The refrigeration indicator lights when the refrigeration switch is on and the compressor is receiving power Defrost Switch and Indicator Light Figure 3 3 The defrost switch controls power to the defrost sys tem Setting the defrost switch to Auto will provide two 15 minute defrost cycles during a twenty four hour period The defrost indicator lights when the defrost s...

Page 15: ...ers and maintain the incubator s cabinet temperature at the overtemp safety control point Note The overtemp control is not directly calibrated The num bers on the dial are for reference only If an overtemp condition occurs the alarm can only be silenced by raising the overtemp safety thermostat setting However the cause of the problem must be determined and cor rected before normal operation under...

Page 16: ...r with soap and water or with any non abrasive commercial spray cleaner Clean the inside of the chamber with alcohol and or soap and water Disinfect the interior panels with a general use laboratory disinfectant diluted according to the manufacturer s instruc tions Rinse the surface thoroughly after each cleaning and wipe the surfaces dry Always rub in the direction of the finish pol ish lines Do ...

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Page 18: ...st 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 Cleaning and calibration adjustment intervals are dependent upon use en...

Page 19: ...n Experiments side panels with disinfectant Rinse everything well with sterile distilled water More frequent decontamination may be required depending on use and environmental conditions 5 4 5 7 Verify and document all calibrations at the minimum Clean drip pan and drain lines Clean refrigeration system condenser Verify defrost cycle for below 10 C operation Change filters under normal conditions ...

Page 20: ...g probe 5 3 Replacing the Temperature Sensor 1 Locate the probe mounting plate in the center of the right side of the incubator interior 2 Open the mounting plate by removing the screws that hold it in place 3 Locate the humidity sensor mounted on the inside of the panel in a black housing Note the angle of the probe 4 Grasp and unplug the probe from the probe cable 5 When replacing the humidity s...

Page 21: ... displays show 2 Loc Figure 5 5 Press the Down arrow key until the 2 becomes 0 zero as shown in Figure 5 6 c Controller Configuration The Watlow 982 Temperature Controller has been config ured at the factory Copies of the Watlow Configuration records are included at the end of this section Do not reconfigure the controller without first consulting the Technical Services department at 888 213 1790 ...

Page 22: ...ntal Chamber _____________________________________________________________________________Service 4 Turn off the main power switch 5 Wear a grounding wrist strap to avoid damaging any of the electrical components 6 Remove the 982 controller module s by pressing in the four retaining tabs two on the right side two on the left side Pull the controller module out by gently rocking it from side to sid...

Page 23: ...o Figure 5 9 Then adjust as necessary If an adjustment is necessary press either the 1 or 2 button to move the pen left or right The button must be held about five seconds before the pen begins to move Release the button when the pen matches the thermometer 5 6 Setting the Door Heater Control High voltage is present behind control panel Servicing must be performed only by qualified electrical serv...

Page 24: ...A CAL2 NA dEC1 NA rtd1 DIN rH2 NA Hunt NA rL1 20 0 Ftr1 2 LrnL NA rH1 80 0 In2 NA LrnH NA This is a calibration factor and will vary from unit to unit 4 OtPt Ot1 Ht AL2 NA LAt3 NA SIL4 OFF PrC1 NA LAt2 NA SIL3 NA Aout Prc1 HyS1 0 1 SIL2 NA Ot4 AL4n PrC3 4 20 Ot2 CL Ot3 NA AL4 Pr1 ArL 20 0 PrC2 NA AL3 NA HyS4 0 1 ArH 80 0 HyS2 0 1 HyS3 NA LAt4 nLA ACAL This is a calibration factor and will vary fro...

Page 25: ...0 10 Aut OFF Pbht 1 0 A2hı 20 04 dSPL Display Intensity 5 to 99 rESt Restore Factory Calibration Select YES to restore Usrr Restore User Settings Select YES to restore user configuration USrS Save User Settings Select YES to save user configuration dFLt Default Parameters Select YES to reset to default configuration NOTE Not all available parameters are listed on this page See Watlow manual for mo...

Page 26: ...ss steel Exterior Cold rolled steel Insulation 2 5 1cm Foamed urethane Outer Door Gasket Four sided vinyl compression Finish Powder coated Salt spray tests exceed 1000 hrs per ASTM Standard B117 85 Weights Net 700 lbs Shipping Motor 850 lbs Temperature Alarm Sensor Thermostat Controller Thermostat Setpoint Analog reference dial Alarm Audible visual Fittings Drain Port 3 8 OD Copper Unit Heat Load ...

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Page 28: ...y 1 290162 RH Sensor 1 231221 Watlow 982 Controller 1 231224 Watlow SD Controller 1 270129 Arc filters for Watlow 982 controller 1 320277 Triac 25A 2 285614 20A Fuse 2 137022 Heater steam 1 430940 Over Temp Thermostat 1 430941 Under Temp Thermostat 1 410048 Defrost Timer 1 630090 Heater wirewound 1 205062 Condensing Unit 1 4 HP 115V R 134A 1 991334 Solenoid 120V 101 Port 1 230214 Thermal Fuse 250V...

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Page 30: ...Environmental Chamber ______________________________________________________________Refrigeration Schematic 8 1 ...

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Page 32: ...Environmental Chamber __________________________________________________________________Electrical Schematics 9 1 ...

Page 33: ...Environmental Chamber __________________________________________________________________Electrical Schematics 9 2 ...

Page 34: ...Environmental Chamber __________________________________________________________________Electrical Schematics 9 3 ...

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Page 36: ... warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo Electron Corporation postage paid and replacement parts are shipped FOB destination THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRITTEN ORAL OR IMPLIED NO WARRANTIES OF MERCHANTABILITY...

Page 37: ...der this warranty shall not extend the warranty to either the equipment or to the component part beyond the original warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destination THIS WARRANTY IS EXCLUSIVE AND I...

Page 38: ...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 ...

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