Thermo Forma 3940 Operating And Maintenance Manual Download

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Models 3940 and 3949 _______________________________________________________________________________________________________Electrical Schematics

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Summary of Contents for 3940

Page 1: ...Models 3940 and 3949 29 cu ft capacity Environmental Chamber Operating and Maintenance Manual Manual No 7033940 Rev 18 ...

Page 2: ...to the use of this manual MANUAL NUMBER 7033940 18 21173 IN 3057 11 15 02 Added ground shield to temperature and humidity probe ccs 17 20479 IN 3013 10 7 02 Added 1900140 IR CO2 option as an accessory aks 16 20474 IN 3013 3 6 02 Added optional heatless dryer aks 15 20342 PIP 012 10 3 01 Revised electrical schematics aks 14 19942 6 8 01 Replaced timer 275030 with 410048 aks 13 19935 5 8 01 Updated ...

Page 3: ...rocedimientos 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 de...

Page 4: ...Models 3940 and 3949 _________________________________________________________________________Service iii ...

Page 5: ...2 3 2 9 Offset Calibration 2 4 2 10 Honeywell Recorder optional 2 4 2 11 Controller Configuration 2 4 2 12 1900140 IR CO2 Option 2 5 Section 3 Start Up and Operation 3 1 3 1 The Control Panel 3 1 3 2 Setting Incubator Operating Temperature 3 3 3 3 Setting Incubator Operating Humidity 3 3 3 4 Programming the controllers 3 3 a Removing the Mechanical Lockout 3 3 b Removing the Software Lockout 3 3 3...

Page 6: ...ery receipt Failure to 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 ...

Page 7: ...roduct prior to being introduced into the humidity reservoir Distilled or de ionized water used in the humidity reservoir must be within a water quality resistance range of 50K Ohm cm to 1M Ohm cm to protect and prolong the life of the stainless steel Use of water outside the specified range will decrease the operating life of the unit and may void warranty The water inlet is the 1 8 FPT connectio...

Page 8: ...rt Up When the humidification system is operational the incuba tor 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 Temperature Controller Desired Setpoint Door Heater 40 factory set For best overall performance of the incubator the refrigera tion swi...

Page 9: ...h When replacing the 9 volt battery use only an alkaline style battery Dispose of the old battery following established envi ronmental practices b Changing the Chart Paper 1 Press the Change Chart button 3 and hold it for 1 sec ond until the pen begins to move to the left of the chart See Figure 2 3 2 Remove the existing chart by unscrewing the center knob securing it 3 Install the new chart posit...

Page 10: ...urn the hardware lockout back on 1 Press the Up and Down Arrow keys simultaneously for 3 seconds The word InPt will appear in the upper dis play and set will appear in the lower display 2 Press the Down Arrow once then continue to press the Mode key until LOC appears in the lower display The upper display will show 0 Press the Up Arrow until 2 appears 3 Press the Display key once 4 Turn off the ma...

Page 11: ...pper display shows the actual CO2 content inside the chamber The lower display shows the CO2 setpoint Before setting the CO2 Content allow the chamber tempera ture and humidity to stabilize Do not open door during the sta bilization period To set the CO2 content press the up or down triangles on the Watlow 93 Controller c CO2 Controller Calibration If it should become necessary to calibrate the CO...

Page 12: ...It2 NA dB 0 0 rE1 0 50 Ct1 5 rA2 0 25 It1 NA Pb2 1 0 dE2 NA rA1 0 19 rE2 0 25 Ct2 30 PROG See Programming Sheets if required Setup Menus InPt In1 RT D CAL1 rL2 NA CAL2 NA dEC1 NA rtd1 DIN rH2 NA Hunt NA rL1 20 0 Ftr1 2 LrnL NA rHi 80 0 In2 NA LrnH NA OtPt Ot1 Ht AL2 NA LAt3 nLA SIL4 NA PrC1 NA LAt2 NA SIL3 OFF Aout NA HyS1 0 1 SIL2 NA Ot4 NA PrC3 NA Ot2 CL Ot3 AL3 AL4 NA ArL NA PrC2 NA AL3 Pr1 HyS...

Page 13: ...alarm points PID Pb1 8 dE1 NA It2 NA dB 0 rE1 0 05 Ct1 5 0 rA2 0 35 It1 NA Pb2 7 dE2 NA rA1 0 35 rE2 0 03 Ct2 30 PROG See Programming Sheets if required Setup Menus InPt In1 0 5 CAL1 rL2 NA CAL2 NA dEC1 0 rtd1 NA rH2 NA Hunt NA rL1 0 Ftr1 2 LrnL NA rHi 100 In2 NA LrnH NA OtPt Ot1 Ht AL2 NA LAt3 nLA SIL4 NA PrC1 NA LAt2 NA SIL3 ON Aout NA HyS1 1 SIL2 NA Ot4 NA PrC3 NA Ot2 CL Ot3 AL3 AL4 NA ArL NA P...

Page 14: ...MPLETED BY DATE Operational Parameters Pb1 It2 rE1 rA2 It1 dE2 rA1 Ct2 dE1 ALO Ct1 AHI Pb2 CAL rE2 AUt Setup Parameters LOC HSA In LAt dEC SIL C_F rtd rL rP rH rT Ot1 PL HSC dSP Ot2 Notes calibration offset may vary from unit to unit Important Input switches 1 2 must be set to on 2 5 0 05 0 5 0 10 5 0 0 2 0 1 4 20 NLA 0 0 OFF de WATLOW 93 CONFIGURATION RECORD ht 100 0 1 nor 0 0 off 20 0 ...

Page 15: ...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...

Page 16: ... 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...

Page 17: ...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...

Page 18: ... 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...

Page 19: ...twenty four hour period The defrost indicator lights when the defrost switch is on and the incubator is in a defrost cycle The defrost switch must be turned on when the temperature setpoint is 10 C or below A B C Figure 3 2 Overtemp Safety Control Indicator Light and Audible Alarm Figure 3 2 The overtemp safety thermostat should be set slightly above the operating temperature of the incubator In t...

Page 20: ...n the event of an undertemp condition the undertemp safety thermostat will Activate the audible alarm and the undertemp indicator light Interrupt power to the refrigeration system and maintain the incubator s cabinet temperature at the undertemp safety control point Note As with the overtemp safety control the undertemp con trol is not directly calibrated The numbers 0 to 10 on the dial are for re...

Page 21: ...rmance of the incubator and therefore must be made only by qualified persons The con trollers should not be re configured without first consulting Thermo Forma Service Department at 1 888 213 1790 a Removing the mechanical lockout Make sure the unit is turned off Wearing a grounding wrist strap or maintaining constant con tact with the metal cabinet press in the four locking tabs on the frame of t...

Page 22: ...ass cleaner or with a solution of ammonia and water Press the Mode key to scroll through the menus until the upper and lower displays show 2 Loc Figure 3 11 Press the down arrow key until the 2 becomes 0 zero as shown in Figure 3 12 Press the Display key to return to showing the setpoint and actual temperatures All safeguards are now removed and the controller may be programmed Refer to the Watlow...

Page 23: ...st of preventive maintenance requirements See the specified section of the instruction manual for further details Thermo Forma 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 envir...

Page 24: ... procedure Wipe down interior shelves Between Experiments side panels with disinfectant Rinse everything well with sterile distilled water More frequent decontamination may be required depending on use and environmental conditions 2 9 Verify and document all calibrations at the minimum 5 7 Inspect and clean the humidity generator at the minimum Clean drip pan and drain lines Clean refrigeration sy...

Page 25: ...robe 5 3 Replacing the Humidity 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 humi...

Page 26: ...e cabinet Note the washer arrangement on the bolts 14 Remove the black trim gasket located at the junction of the top assembly and the main incubator section The ends of the gasket have been joined together at the rear of the incubator Note When raising the top section notice the gasket seal at the top opening of the incubator chamber The gasket must be cor rectly positioned when reinstalling the ...

Page 27: ... sary 7 Carefully pry off the brass top of the float control reser voir Clean and disinfect it and the connecting tube between the reservoir and the steam generator being careful to not damage the float assembly 8 Clean the two heater elements and the part of the copper capillary tube attached to them 9 When all surfaces are clean rinse with sterile distilled water until all soap and disinfectant ...

Page 28: ...eplace the cabinet top and return the incubator to serv ice Section 6 Specifications Temperature Control 0 1 C 37 C 98 6 F Range 0 C 32 F to 60 C 140 F Sensor RTD Controller Digital electronic proportional Setpoint Digital Display Digital LED Readability 0 1 C Setability 0 1 C Uniformity 0 3 C at 25 C to 37 C with six shelves installed Shelves Standard 6 Maximum 19 Dimensions 30 62 W x 25 81 F B 7...

Page 29: ... 38 00 W x 87 50 H x 32 00 F B 96 52 cm x 222 25 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 speci fication changes at any time Performance plus or minus the least significant digit unless otherwise specified Better than 0 5 C uniformity at all other temperature parameters Section 7 Spare Parts Part No Desc...

Page 30: ...Models 3940 and 3949 _________________________________________________________________________Spare Parts 7 2 ...

Page 31: ...Models 3940 and 3949 _________________________________________________________________________Spare Parts 7 3 BACK VIEW ...

Page 32: ...Models 3940 and 3949 ______________________________________________________________Refrigeration Schematics 8 1 ...

Page 33: ...Models 3940 and 3949 __________________________________________________________________Electrical Schematics 9 1 ...

Page 34: ...Models 3940 and 3949 __________________________________________________________________Electrical Schematics 9 2 ...

Page 35: ...Models 3940 and 3949 __________________________________________________________________Electrical Schematics 9 3 ...

Page 36: ...Models 3940 and 3949 __________________________________________________________________Electrical Schematics 9 4 ...

Page 37: ...Models 3940 and 3949 __________________________________________________________________Electrical Schematics 9 5 ...

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Page 41: ...Models 3940 and 3949 _______________________________________________________________________________________________________Electrical Schematics 9 9 ...

Page 42: ...Thermo Forma Millcreek Road P O Box 649 Marietta Ohio 45750 U S A Telephone 740 373 4763 Telefax 740 373 4189 ...

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Thermo Forma 3940, Operating And Maintenance Manual

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