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Model 3940 Series

Thermo Electron Corporation

PREVENTIVE MAINTENANCE

Environmental Chambers

Your equipment has been thoroughly tested and calibrated before shipment. Regular preventive maintenance is important to keep your unit
functioning properly. The operator should perform routine cleaning and maintenance on a regular basis. For maximum performance and
efficiency, it is recommended that the unit be checked and calibrated periodically by a qualified service technician.

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.

Cleaning and calibration adjustment intervals are dependent upon use, environmental conditions and accuracy required.

Tips for all incubators:

• Do NOT use bleach or any disinfectant that has high chloros.
• Use sterile, distilled or demineralized water.
• Avoid spraying cleaner on the CO2 sensor.
• Do not use powdered gloves for tissue cultures.

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Содержание 3940 Series

Страница 1: ...Analyze Detect Measure Control Model 3940 Series Forma Environmental Chamber Operating and Maintenance Manual 7043940 Rev 7 ...

Страница 2: ...2 controllers new schematics ccs 4 22453 IN 3208 9 7 04 Updated FLA specs on drawings and specification page ccs 8 18 04 Added Puregas dryer preventive maintenance ccs 3 6 28 04 Reinstalled reference to Hold Run key for silence on Watlow corrected ccs 2 22337 5 11 04 Removed reference to Hold Run key for silence on Watlow chg pending ccs 1 22070 22129 1 29 04 Pre programmed controller changed ther...

Страница 3: ...l internal adjustments and maintenance must be performed by qualified service personnel V Material in this manual is for information purposes only The contents and the product it describes are subject to change without notice 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 ar...

Страница 4: ...02 96 EC WEEE and the equipment that has been put on the market after 13 August 2005 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...

Страница 5: ...Thermo Electron Corporation iv Model 3940 Series Thermo Electron Corporation Preface ...

Страница 6: ...rovide 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 service connec...

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Страница 8: ...te Alarm Contacts 1 4 Power Connection 1 4 Start Up 1 4 Set the Overtemp Safety Thermostat 1 5 Set the Undertemp Safety Thermostat 1 5 Cobex Recorder Optional 1 6 Change the Chart Paper 1 6 Change the Pen 1 7 Honeywell Recorder Optional 1 7 IR CO2 Option 1 7 Connect the CO2 Source 1 7 Set the CO2 Content 1 8 CO2 Control and Indicators 1 9 Start Up and Operation 2 1 Control Panel 2 1 Set the Operat...

Страница 9: ... Remove Mechanical Lockout 4 3 Remove Software Lockout 4 4 Controller Configuration 4 5 Offset Calibration Temp Humidity 4 5 Replace Optional Recorder and Probe s 4 7 Calibrate the Recorder 4 7 Set Door Heater Control 4 8 Clean Adjust Steam Generator 4 8 CO2 Controller Calibration 4 10 Specifications 5 1 Spare Parts 6 1 Refrigeration Schematics 7 1 Electrical Schematics 8 1 Warranty Information 9 ...

Страница 10: ...econtamination method except those recommended by the manufacturer users should check with the manufacturer that the proposed method will not damage the equipment V Warning Accidental spills of hazardous materials on or inside this unit are the responsibility of the user V The shelves may be installed at any level in the incubator Install a shelf channel on each side With the tabs pointing up atta...

Страница 11: ...teel High purity water has a resistance of above 1M to 18M Ohm Even high purity water can contain bacteria and organic contaminants Water should always be sterilized or treated with a decontaminant safe for use with stainless steel as well as safe for the product prior to being introduced into the humidity reservoir Caution Distilled or de ionized water used in the humidity reservoir must be withi...

Страница 12: ... on the rear lower left side of the cabinet A P trap Figure 1 2 is included with the unit and must be installed on the connection To install the drain connection 1 Using Teflon pipe thread tape tape the threads on the cabinet drain connection 2 Using an open end adjustable wrench install the P trap onto the connection Make sure the trap section is positioned down 3 Push a piece of 3 8 ID tubing on...

Страница 13: ...cted V For Models 3911 and 3940 plug the provided 10 ft power cord with the NEMA 14 20 plug into the grounded dedicated electrical circuit When the humidification system is operational the incubator may be started Preset the controls as follows Overtemp Safety Thermostat Fully Clockwise Undertemp Safety Thermostat Fully Counterclockwise Main Power Switch ON Humidity Controller Desired Setpoint Tem...

Страница 14: ...ged the overtemp safety thermostat must be reset to accommodate the change V Note The overtemp control is not directly calibrated The numbers on the dial are for reference only V Allow the chamber temperature and humidity to stabilize then set the undertemp safety thermostat as follows 1 Turn the undertemp control knob slowly clockwise until the audible alarm sounds and the undertemp indicator lig...

Страница 15: ...eak or not connected the green LED will flash If power is lost to the cabinet the LED will also flash When replacing the 9V battery use only an alkaline style battery Dispose of the old battery following established environmental practices 1 Press the Change Chart button 3 and hold it for 1 second until the pen begins to move to the left of the chart See Figure 1 4 2 Remove the existing chart by u...

Страница 16: ...ording 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 4 and the supplemental Honeywell Recorder manual This section applies to units with the IR CO2 option only For the most economical use the liquid CO2 supply tanks should be without siphon tubes so that only CO2 gas enters the incu...

Страница 17: ...ng installed in the CO2 inlet 2 Check the tubing connection for leaks The Watlow SD CO2 controller s upper display shows the actual CO2 content inside the chamber The lower display shows the CO2 setpoint Before setting the CO2 content allow the chamber temperature and humidity to stabilize Do not open door during the stabilization period To set the CO2 content 0 to 20 press the Up or Down Arrow ke...

Страница 18: ...set to activate when the chamber CO2 content deviates from configured alarm set points see configuration record When a CO2 alarm occurs the CO2 Alarm indicator on the control panel lights and the audible alarm sounds The CO2 alarm high and low setpoints are established through the Watlow SD CO2 controller ALO and AHI Refer to the Configuration Record included at the end of Section 4 Model 3940 Ser...

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Страница 20: ... 2 2 The main power switch controls power to the incubator The main power indicator lights when the power switch is on and the unit is receiving power Refrigeration Switch and Indicator Light Figure 2 3 The refrigeration switch controls power to the refrigeration system The refrigeration indicator lights when the refrigeration switch is on and the compressor is receiving power Control Panel Figure...

Страница 21: ... When controlling humidity the dehumidification switch should be in the ON position for most applications The dehumidification light will cycle on and off as the humidity controller toggles between humidify and dehumidify Heat Indicator Figure 2 4 The Heat Indicator illuminates when the heater activates Cool Indicator Figure 2 4 The Cool Indicator illuminates when the refrigeration system activate...

Страница 22: ...e at the undertemp safety control point Note The undertemp control is not directly calibrated The numbers on the dial are for reference only V If an undertemp condition occurs the alarm can only be silenced by lowering the undertemp safety thermostat setting However the cause of the problem must be determined and corrected before normal operation under the main temperature controller is resumed Au...

Страница 23: ... under the low limit Refer to the Watlow User s guide provided Refer also to the factory configuration records located at the end of Section 4 of this manual V The Watlow temperature controller s upper numerical display shows the actual temperature inside the incubator chamber The lower display shows the temperature setpoint To raise or lower the setpoint press the Up or Down Arrow Temperatures ar...

Страница 24: ...ounterclockwise and closed by turning clockwise For optimum performance of the unit the vent caps should be closed at all times The optional heatless dryer P N 1900139 provides dehumidification for the incubator chamber The dehumidify switch must be turned On for the dryer to operate The dryer is controlled with the humidity controller and should operate at 90 psi Model 3940 Series 2 5 Thermo Elec...

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Страница 26: ...r panels with a general use laboratory disinfectant diluted according to the manufacturer s instructions Rinse the surface thoroughly after each cleaning and wipe the surfaces dry Always rub in the direction of the finish polish lines Caution CautionDo not use chlorinated solvents on stainless steel as they can cause rusting and pitting V Caution Do not use volatile or aromatic solvents for cleani...

Страница 27: ...lowing 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 Cleaning and calibration adjustment intervals a...

Страница 28: ...epending on use and environmental conditions 5 Verify and document all calibrations at the minimum 5 Inspect and clean the humidity generator 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 Replace the filter elements on the dryer if applicable Rebuild the solenoid valves on the ...

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Страница 30: ...th a Phillips screwdriver The control panel is hinged and will swing open 1 Remove the incubator top right side air dam by removing the screws holding it in place 2 Remove the top three screws from the top of the right duct cover 3 Lean the duct sheet out and remove the Permagum seal from around the probe access hole 4 Remove the 15 copper capillary overtemp probe by extracting two plastic clips t...

Страница 31: ...emove the unit 12 Replace the thermostat and probe 13 Re assemble in reverse order Note Reseal probe access hole with Permagum and tie wrap overtemp cable to existing wires after replacing probe V 1 Follow instructions 1 6 from Over Undertemp Probe and Thermostat section to locate and remove the probe from the chamber 2 Clip any plastic ties securing the probe wiring Disconnect the probe 3 Install...

Страница 32: ...t first consulting the Technical Services Department 888 213 1790 V 1 Make sure the unit is turned off 2 Wearing a grounding wrist strap or maintaining constant contact with the metal cabinet press in the four locking tabs on the frame of the Temperature controller There are two tabs on either side as shown in the front and side views in Figure 4 2 When all tabs are unlocked pull the controller mo...

Страница 33: ...he Up Arrow until gLbL global appears in the upper display The word set will remain in the lower display Figure 4 5 3 Press the Mode key to scroll through the menus until the lower displays show Loc Figure 4 6 Press the Down arrow key until the 2 becomes 0 zero as shown in Figure 4 7 4 4 Model 3940 Series Thermo Electron Corporation Section 4 Service Remove Software Lockout Figure 4 5 Global and S...

Страница 34: ...r a grounding wrist strap to avoid damaging any electrical components 5 Remove the 982 controller module s by pressing in the four retaining tabs two on the right side two on the left side Refer to Figure 4 8 Pull the controller module out by gently rocking it from side to side 6 Looking at the top and right side of the controller module locate the red DIP switches indicated Figure 4 9 Use your fi...

Страница 35: ...sly for 3 seconds The word InPt appears in upper display and Set in lower display 2 Press the Down Arrow once then continue to press the Mode key until LOC appears in lower display Upper display shows 0 Press Up Arrow until 2 appears 3 Press Display key once 4 Turn off main power switch 5 Wear a grounding wrist strap to avoid damaging any electrical components 6 Remove the 982 controller module s ...

Страница 36: ...o other wiring 9 Remove the four screws securing the recorder and pull it carefully out from the front of the control panel 10 Replace the recorder with the correct part Note When replacing the recorder and probe s retie the probe cable s to the existing wires V Place an accurate thermometer s in the chamber next to the recorder s probe s After about three minutes compare the thermometer with the ...

Страница 37: ...ating ambient conditions it is recommended that a minimum of 40 door heat be used Depending upon the quality of water used in the humidification system it may be necessary to clean the humidity steam generator P N 1900190 every 2 to 3 months Materials Required 6 foot stepladder Flat and Phillips screwdrivers 11 32 Nutdriver or wrench Laboratory disinfectant 9 16 Open end wrench 1 2 Open end wrench...

Страница 38: ...ference Unsnap the two toggle clamps on the heater 8 Remove the can through the top of the steam generator taking care not to spill water out of the can Empty the water Clean the can with a good quality laboratory detergent and disinfectant Do not use any type of chloride cleaner A bristle brush may be needed for stubborn rust and scale Also clean the inside of the steam tube using a test tube bru...

Страница 39: ... bottom display actual CO2 reading in the upper display 1 Press the Advance key until CAL appears in the lower display 2 Use the up and down arrows to make offset adjustment 3 Press the Infinity key to exit the calibration menu 4 10 Model 3940 Series Thermo Electron Corporation Section 4 Service CO2 Controller Calibration Figure 4 13 Key Locations ...

Страница 40: ...d1 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 from unit to unit 5 COM...

Страница 41: ...A rL1 0 Ftr1 2 LrnL NA rH1 100 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 ON PrC1 NA LAt2 NA SIL3 NA Aout Prc1 HyS1 1 SIL2 NA Ot4 AL4n PrC3 4 20 Ot2 CL Ot3 NA AL4 Pr1 ArL 0 PrC2 NA AL3 NA HyS4 1 ArH 100 HyS2 1 HyS3 NA LAt4 Nla ACAL This is a calibration factor and will vary from unit to unit 5 COM bAUd 9600 dAtA 70 PrOt FULL Addr 0...

Страница 42: ...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 more information NOTES...

Страница 43: ...ON CYC2SEC TIME MINUTES CURRENT TUNING2 PROP BD or HOURS CURRENT GAIN DAY CURRENT RATE MIN MONTH CURRENT RSET MIN or YEAR CURRENT RSET PRM or DAY CURRENT MAN RSET CYCSEC PEN1 PEN1 ENABLE PROP BD2 or PEN1IN INPUT 1 GAIN2 CHART1HI 80 RATE2MIN CHART1LO 20 RSET2MIN or PEN1ON RSET2RPM PEN1OFF CYC2SEC MAJORDIV 10 MINORDIV 10 SP RAMP1 SP RAMP RNG1TAG TEMP TIME MIN FINAL SP PEN2 PEN2 ENABLE SP RATE PEN2IN...

Страница 44: ... TOTAL1 IN1HI 482 2 TOTALEU IN1LO 184 4 RATE CUTOFF SCALER INPTCOMP RSETABLE FILTER1 2 BURNOUT UP TOTAL2 Value RSETTOT INPUT2 DECIMAL XXXX TOTAL2 UNITS EU TOTALEU ENGUNITS RH RATE IN2TYPE 0 5 V SCALER XMITTER LINEAR RSETABLE IN2HI 100 IN2LO 0 CONTROL1 PID SETS CUTOFF2 SW VALUE INPTCOMP SP SOURC FILTER2 2 RATIO BURNOUT UP BIAS SP TRACK INPUT3 DECIMAL POWER UP UNITS SP HILIM ENGUNITS SP LOLIM IN3TYP...

Страница 45: ...MINorRPM A3S2 VAL CONT1ALG A3S1 TYPE OUT1ALG A3S2 TYPE 4 20 RNG A3S1 HL SHEDMODE A3S1 EV SHED SP A3S2 HL A3S2 EV OPTIONS INPUT 1 ENABLE AL3 HYST INPUT2 ENABLE A4S1 VAL INPUT3 DISABLE A4S2 VAL INPUT4 DISABLE A4S1 TYPE CONTROL1 DISABLE A4S2 TYPE CONTROL2 DISABLE A4S1 HL REJFREQ 60 HZ A4S1 EV HF REJ ENABLE A4S2 HL AUX OUT DISABLE A4S2 EV 4mA VAL AL4 HYST 20mA VAL A5S1 VAL RELHUMID NO A5S2 VAL ATMPRES...

Страница 46: ... MESSAGE 3 POSITION 3 EVENT 4 NONE MESSAGE 4 POSITION 4 EVENT 5 NONE MESSAGE 5 POSITION 5 EVENT 6 NONE MESSAGE 6 POSITION 6 LOCKOUT PASSWORD LOCKOUT MAX CHANGE ADJUST TRACE LN GRID LN PEN TYPE W1 MA W3 INPUT 1 W1 RTD INPUT 2 MA T C INPUT 3 INPUT 4 ALARMS 5 6 ____________________ INPUT JUMPERS TO BE FITTED JUMPERS TO BE FITTED CONTROL OUTPUT 1 2 __________ ALARMS 1 2 ____________________ ALARMS 3 4...

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Страница 48: ... 25 81 F B 77 78 cm x 65 56 cm Construction Solid stainless steel reinforced Surface Area 5 4 sq ft 51 sq m per shelf Max Per Chamber 104 3 sq ft 9 69 sq m Clearance Adjustable on 3 7 62 cm centers Loading 35 lbs 16 kg slide in and out 50 lbs 23 kg stationary Construction Volume 3940 3949 29 cu ft 821 liters 3911 3913 11 cu ft 312 liters Interior 304 2B stainless steel Exterior Cold rolled steel I...

Страница 49: ...oller Thermostat Setpoint Analog reference dial Alarm Audible visual Humidity Control 5 RH Range Above ambient to 95 Sensor Thin film polymer Controller Electronic direct set in RH Setpoint Digital Display Digital LED Readability 1 Setability 1 Steam Generator Initial fill approx 1 quart 95 liters Fittings Fill Port 1 8 FPT Drain Port 3 8 1 9 cm FPT Unit Heat Load 6000 BTUH 1750W Refrigeration Com...

Страница 50: ... x 81 28 cm Interior 31 00 W x 24 00 H x 27 00 F B 78 74 cm x 60 90 cm x 68 58 cm Model 3940 3949 Exterior 38 00 W x 88 5 H x 32 00 F B 96 52 cm x 224 79 cm x 81 28 cm Interior 31 00 W x 60 00 H x 27 00 F B 78 74 cm x 152 40 cm x 68 58 cm Continuing research and improvements may result in specification changes at any time Performance plus or minus the least significant digit unless otherwise speci...

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Страница 52: ... Watlow 982 Humidity Controller 1 231224 Watlow SD Controller 1 270129 Arc Filter for Watlow 982 Controller 1 285614 20A Fuse 2 137022 Heater steam 1 403940 Over Temp Thermostat 1 403941 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 Refrig 1 230214 Thermal Fuse 250V 17A 1 830044 Blower Motor 1 4 HP...

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Страница 54: ...Model 3940 Series 7 1 Thermo Electron Corporation Section 7 Refrigeration Schematics ...

Страница 55: ......

Страница 56: ...Model 3940 Series 8 1 Thermo Electron Corporation Section 8 Electrical Schematics ...

Страница 57: ...8 2 Model 3940 Series Thermo Electron Corporation Section 8 Electrical Schematics ...

Страница 58: ...Model 3940 Series 8 3 Thermo Electron Corporation Section 9 Electrical Schematics ...

Страница 59: ......

Страница 60: ...8 4 Model 3940 Series Thermo Electron Corporation Section 9 Electrical Schematics ...

Страница 61: ...Model 3940 Series 8 5 Thermo Electron Corporation Section 9 Electrical Schematics ...

Страница 62: ...8 6 Model 3940 Series Thermo Electron Corporation Section 9 Electrical Schematics ...

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Страница 64: ...quipment 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 Electron Corporation postage paid and replacement parts are shipped FOB destination THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRI...

Страница 65: ...pair of components parts or equipment under 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 dest...

Страница 66: ...en damaged in shipment TRANSIT LOSS All COBEX instruments are insured against transit loss by breakage To make this insurance effective all claims must be filed with the carrier at the destination within one week of receipt of merchandise No claims regardless of the nature of same will be accepted beyond this period UNPACKING Each recorder is shipped with the standard accessory items listed below ...

Страница 67: ...ation concerning the connection of the probe to the recorder This recording unit is capable of accepting input from either a CURRENT source such as 4 20mA a VOLTAGE source such as 0 1 Volt 0 5 Volts 1 5 Volts or 0 10 Volts or a 100 ohm RTD probe Note The recorder is programmed at the factory to accept a specific probe input range Connecting a probe that supplies the recorder with a current or volt...

Страница 68: ...rd Figure 1A Microprocessor PC Board Type A TYPE B CONTROLLER PC BOARD If your recorder has a Type B microprocessor controller PC board installed then locate screw terminal blocks J3 and J4 on the microprocessor PC board These screw terminal blocks are used to provide signal input to the recorder for up to two pens Refer to Figure 1B for the location of J3 and J4 on the micro controller PC board V...

Страница 69: ...onger give you a fine line marking on the chart paper Place the pen cap in a safe place for future use If the stylus does not touch the chart adjustment can be made by slightly bending the metal pen arm in the center towards the chart paper Do not use more pressure than is necessary to create a fine line marking on the chart paper Note As the pen ink supply runs out the pen color will become light...

Страница 70: ...immerse a Temperature Humidity probe in any solution 1 Place a Certified Test Thermometer s in a solution bottle s alongside the recorder s sensor probe s 2 Once the temperature has leveled out compare the position of the pen on the recorder to the test thermometer s reading 2a For two 2 pen recorders also compare the second thermometer s reading to the second penof the recorder 3 If an adjustment...

Страница 71: ...ently remove the chart plate to expose the relay that is mounted to the back of the chart plate Otherwise your recording unit will have a hinged chart plate held in place by two 2 screws located in the upper and lower right hand corners of the chart plate Remove these two screws and open the hinged chart plate On 8 recording units there is a single screw along the right hand edge that secures the ...

Страница 72: ...is used on the recording unit must match the range that is selected for the recorder Otherwise the pen s position on the chart paper will not correspond to the temperature that is measured Also if the pen moves to the center or outer edge of the chart and remains there while the unit is powered on then this maybe an indication that the current range that is selected for the unit is not correct The...

Страница 73: ...nd the selected range will be saved into the recorder s permanent memory RECORDER SPECIFICATIONS INPUT Nominal Input Voltage Single Phase 115 230VAC Nominal Input Current 40mA 20mA Nominal Input Frequency 50 60 Hz BATTERY Optional Battery Type 9 Volt Alkaline Low Battery Signaling Flashing LED OPERATING ENVIRONMENT 0o C 40o C 32o F 104o F 0 95 RH Non condensing Pollution Degree 2 Installation Cate...

Страница 74: ...9 R70 32 WEB REV 12 04 D Figure 6A Recorder Assembly Type A Rear View Figure 6B Recorder Assembly Type A with Electric Contact Option Rear View ...

Страница 75: ...10 R70 32 WEB REV 12 04 D Figure 6C Recorder Assembly Type B Rear View Figure 6D Recorder Assembly Type C Rear View ...

Страница 76: ...11 R70 32 WEB REV 12 04 D Figure 7 6 Recorder Case Dimensions ...

Страница 77: ...he original purchaser or to any other person No agent is authorized to assume for COBEX Recorders Inc any liability except as set forth above Orders submitted on customer s own purchase order forms which forms may contain statements clauses or conditions modifying adding to repugnant to or inconsistent with the terms and provisions of the Seller herein contained will be accepted by the Seller only...

Страница 78: ...Thermo Electron Corporation Controlled Environment Equipment 401 Millcreek Road Marietta Ohio 45750 United States www thermo com ...

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