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Model 3911/3913 _______________________________________________________________________________________________________Electrical Schematics

Summary of Contents for 3911

Page 1: ...Models 3911 and 3913 Environmental Chamber 11 cu ft capacity Operating and Maintenance Manual Manual No 7013911 Rev 15 ...

Page 2: ... incidental aris ing out of or related to the use of this manual MANUAL NUMBER 7013911 15 20474 IN 3013 3 7 02 Added heatless dryer option 1900139 aks 14 20342 PIP 012 10 3 01 Revised electrical schematics aks 13 19942 6 11 01 Replaced timer 275030 with 410038 aks 12 19935 5 8 01 Updated 3940 71 drawing aks 11 IN 2858 03 12 01 Revised control panel access and revised electrical schematics aks 10 1...

Page 3: ...ocedimientos 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 den...

Page 4: ...Model 3911 3913 ________________________________________________________________________________Service iii ...

Page 5: ...on 3 Start Up and Operation 3 1 3 1 The Control Panel 3 1 3 2 Setting the Incubator s Operating Temperature 3 2 3 3 Setting the Incubator s Operating Humidity 3 2 3 4 Programming the controllers 3 2 a Removing the mechanical lockout 3 3 b Removing the Software Lockout 3 3 3 5 Air Exchange Ventilator Caps 3 3 3 6 Heatless dryer optional 3 3 Section 4 Routine Maintenance 4 1 4 1 Cleaning the Incubat...

Page 6: ... water has a resistance of above 1M Ohm to 18M Ohm Even high purity water can contain bacteria and organic con taminants 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 Distilled or de ionized water used in the humidity reservoir must be within a water quality r...

Page 7: ...of the incubator Water inlet pressure must not exceed 40 PSI a manual shut off valve should be installed between the main water supply and the incubator To prevent mineral buildup on heater coils and humidity generator walls it may be necessary to clean the humidity generator and immersion heaters with a non metallic abrasive pad and flush thoroughly every two to three months Refer to Section 5 7 ...

Page 8: ...e 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 switch should be turned on for most applications When running Low or No humidity at high tempe...

Page 9: ...he 9 volt battery as shown in Figure 2 3 If the unit is operating the green LED lights steady If the unit is not turned on the LED blinks If the battery is weak or not connected the green LED will flash If power is lost to the cabinet the LED will also flash When replacing the 9 volt battery use only an alkaline style battery Dispose of the old battery following established envi ronmental practice...

Page 10: ...pears 3 Press the Display key once 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 side 7 Looking at the top and right side of the controller mod ule...

Page 11: ...t2 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 HyS4...

Page 12: ...larm 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 OFF Aout NA HyS1 1 SIL2 NA Ot4 NA PrC3 NA Ot2 CL Ot3 AL3 AL4 NA ArL NA P...

Page 13: ...y control the undertemp con trol is not directly calibrated The numbers 0 to 10 on the dial are for reference only and do not correspond to any specific temperature 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 cor rected before normal operation under the main temperature c...

Page 14: ...urrently off 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 The dehumidify light will be de energized when the system is in Defrost mode Humidity is removed from the cabinet by the refrigeration evaporator coil Moisture accumu...

Page 15: ...for the dryer to operate The dryer is controlled with the humidity controller 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 the Temperature con troller There are two tabs on either side as shown in the front and side views in Figure 3 7 When al...

Page 16: ... 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 polish lines Do not use chlorinated solvents on stainless steel as they can cause rusting and pitting Do not use volatile or aromatic sol...

Page 17: ...hnicians 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 d...

Page 18: ...nt 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 system condenser Verify defrost cycle for below 10 C operation Change filters under normal conditions Qualified service technicians only Regular monitor...

Page 19: ...he overtemp cable to the existing wires after replacing the probe 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 un...

Page 20: ...oil water Make certain sufficient time is given to allow the unit to completely cool before removing the top Model 3911 3913 _________________________________________________________________________________Service 5 Lift the top off of the steam generator and lay it to the side taking care to not crimp the copper capillary tube 6 Siphon all of the water out of the steam generator and clean it with...

Page 21: ..._______Specifications a Checking the Steam Generator Safety Thermostat Calibration 1 Turn the slotted rheostat shaft of the temperature control on the back of the steam generator fully clockwise 2 Remove all tools and cleaning materials from the top of the incubator Reconnect power to the unit and turn it on 3 Set the RH level to 100 and open the incubator door This will cause the heaters in the s...

Page 22: ... W x 24 0 H x 27 0 F B 78 7 cm x 154 8 cm x 68 6 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 Section 7 Spare Parts Part No Description Qty 290163 RTD Temperature Sensor 1 230066 Fuse Ceramic 10A 350V 1 290162 RH Temp Control Signal Conditioner 1 400051 Power Supply 1 231186...

Page 23: ...Model 3911 3913 ______________________________________________________________________________Spare Parts 7 2 ...

Page 24: ...Model 3911 3913 ____________________________________________________________________Refrigeration Schematics 8 1 ...

Page 25: ...Model 3911 3913 _______________________________________________________________________Electrical Schematics 9 1 ...

Page 26: ...Model 3911 3913 _______________________________________________________________________Electrical Schematics 9 2 ...

Page 27: ...Model 3911 3913 _______________________________________________________________________Electrical Schematics 9 3 ...

Page 28: ...Model 3911 3913 _______________________________________________________________________Electrical Schematics 9 4 ...

Page 29: ...Model 3911 3913 _______________________________________________________________________Electrical Schematics 9 5 ...

Page 30: ...Model 3911 3913 _______________________________________________________________________Electrical Schematics 9 6 ...

Page 31: ...9 7 Model 3911 3913 _______________________________________________________________________________________________________Electrical Schematics ...

Page 32: ...9 8 Model 3911 3913 _______________________________________________________________________________________________________Electrical Schematics ...

Page 33: ...9 9 Model 3911 3913 _______________________________________________________________________________________________________Electrical Schematics ...

Page 34: ...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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