Old Style Manual SGO3 SGO3-2 (4861567)
Contents
1. MICROPROCESSOR CONTROLLED OVEN SGO3 SGO3 2 PREVIOUSLY DESIGNATED CE3G CE3G 2 Revised 12 2013 4861567 INSTALLATION AND OPERATION MANUAL Sheldon Manufacturing Inc P O Box 627 Cornelius Oregon 97113 EMAIL tech Shellab com INTERNET http www Shellab com Shellab 1 800 322 4897 503 640 3000 FAX 503 640 1366 TABLE OF CONTENTS SECTION 1 0 SECTION 2 0 SECTION 3 0 SECTION 4 0 SECTION 5 0 SECTION 6 0 SECTION 7 0 SECTION 8 0 SECTION 9 0 RECEIVING AND INSPECTION GRAPHIC SYMBOLS INSTALLATION PRECAUTIONS CONTROL PANEL OVERVIEW OPERATION MAINTENANCE TROUBLESHOOTING PARTS LIST UNIT SPECIFICATIONS SCHEMATICS These units are TUV CUE listed as gravity convection ovens for professional industrial or educational use where the preparation or testing of materials is done at approximately atmospheric pressure and no flammable volatile or combustible materials are being heated These units have been tested to the following requirements CAN CSA G22 2 No 61010 1 2012 CAN CSA G22 2 No 61010 2 010 R 2009 UL 61010 1 2004 R 2005 07 R 2008 10 UL 61010A 2 010 2002 UL 61010 1 2012 EN 61010 1 2010 EN 61010 2 010 2003 IEC 61010 1 2010 IEC 61010 2 010 2003 RECEIVING AND INSPECTION Your satisfaction and safety require a complete understanding of this unit Read the instructions thoroughly and be sure that all users are given adequate training before attempting to use this unit Note This equipment2. the UP and DOWN arrow pads at the same time until the decimal points blink on and off While blinking the display can be changed to match the reference thermometer by pushing the UP or DOWN arrow pads to raise or lower the temperature until the display reads the correct value If no arrow pads are pressed within five 5 seconds the display will revert to displaying the temperature within the chamber NOTE Temperature accuracy should be checked at least monthly or after the unit has been turned off for an extended period of time 6 5 6 6 Set The Overtemperature Limit Thermostat The Overtemperature Safety should be initially set to its maximum position when stabilizing the set point temperature Once the oven is stabile at the desired set point turn the Overtemperature Safety counterclockwise using a coin or flat head screwdriver until the OTP light comes on Next turn the Safety clockwise just until the OTP light goes off Then turn the Safety clockwise two 2 minor increments on its scale past the point where the light went out This sets the Overtemperature Safety Control at approximately 10 C above the Main Temperature set point Set Timer Display Turn the timer switch to the ON position The SET TIMER 9 6 7 display digits will light with no lighted decimals showing See Figure 2 Note that if during any of the following steps several seconds elapse with no arrow pad or reset pad activity the timer will default to the pre
3. 25 C and with a supply voltage that does not vary by more than 10 Customer service should be contacted for operating conditions outside these limits 3 1 Power Source Check the data plate for voltage and ampere requirements before making a connection If the requirements match your power source plug the power cord into a grounded outlet VOLTAGE SHOULD NOT VARY MORE THAN 10 FROM THE DATA PLATE RATING These units are intended for a 50 60 Hz application We recommend a separate circuit to prevent loss of product due to overloading or circuit failure Electrical supply to the unit must conform to all national and local electrical codes 3 2 Location When selecting a site for the incubator consider all conditions that may affect performance such as extreme heat from radiators stoves ovens autoclaves etc Position the unit so the end user has access to the power plug Avoid direct sun fast moving air currents heating and cooling ducts and high traffic areas To ensure air circulation around the unit allow a minimum of 30 cm 11 13 16 between incubator and any walls or partitions that may obstruct free airflow and a minimum of 10 cm 4 top clearance 3 3 Lifting Handling These units are heavy and care should be taken to use appropriate lifting devices that are sufficiently rated for these loads Units should only be lifted from their bottom surfaces Doors handles and knobs are not adequate lifting or stabilization The
4. LOAD WIRE 1 2 J TE SWITC 1 2 DISP TERMNINALS QUENCH CONTROL RELAY AS SHOWN ARC THERMOSTAT N 9850929 HEAT ACTIVATED PILOT LIGHT 17
5. and stop after the timed period on the SET TIMER display has elapsed Note that when the system is in the timer mode the heating circuit is de energized until the START STOP button is pushed or the TIMER SWITCH is turned Off Ifa time change or correction is necessary and the timer has already been activated push the START STOP button to STOP the timer and then repeat steps A through D above To set the timer so that timed operation will not start until the oven is stable at set point pre heat the oven in the normal mode until the desired temperature has stabilized Turn on the timer switch Push and hold the RESET button until the timer display blinks This is to be sure that the pre set timed value is correct Press the START STOP button to activate the timer DIGIT POSITION SET TIMER l 2 3 4 TIR 4 UL ove BLINKING DECIMAL 4 HOUR FUNCTION fl MINUTE FUNCTION C ONE MINUTE FUNCTION O O RESET UP DOWN START STOP Figure 2 10 MAINTENANCE Warning Prior to any maintenance or service on this unit disconnect the power cord from the power source Before reattaching the unit to its power source be sure all volatile and flammable cleaners are evaporated and dry Avertissement Avant d effectuer toute maintenance ou entretien de cet appareil d brancher le cordon secteur de la source d alimentation Avant de reconnecter l appareil sur le secteur s assurer A que tous les produits de
6. clockwise to see if problem solved then follow instructions in section 6 5 for correct setting 9 Electrical noise remove nearby sources of RFI including motors arcing relays or radio transmitters 10 Bad connection on temperature sensor or faulty sensor check connectors for continuity and mechanical soundness while watching display for erratic behavior check sensor and wiring for mechanical damage 11 Bad connections or faulty solid state relay check connectors for mechanical soundness and look for corrosion around terminals or signs of arcing or other visible deterioration 1 Assure that set point is at least 5 degrees over ambient 2 See if ambient is fluctuating check for adjacent open doors or HVAC duct openings stabilize ambient conditions 1 Calibration error see section 6 4 2 Temperature sensor failure call Customer Service 3 Controller failure call Customer Service 4 Allow at least two hours to stabilize 5 Verify that reference thermometer is certified 1 Turn entire unit off and on to reset 2 If repeatedly happens call Customer Service This can be a normal condition when operating temperature varies widely For maximum accuracy calibration should be done at or as close to the set point temperature MECHANICAL Motor doesn t move F suffix models Motor makes noise F suffix models Door not sealing 1 If shaft spins freely check connections to motor and check
7. nettoyage volatiles et inflammables sont compl tement vapor s The design of the chamber is such that periodic maintenance is kept to a minimum No lubrication or adjustments of components is needed Note The unit chamber should be cleaned and disinfected prior to use Cleaning Periodic cleaning is required To clean the incubator perform the following steps 1 Remove all of the interior parts if assembled 2 Clean the incubator with a mild soap and water solution including all corners DO NOT USE spray cleaners that might leak through openings and cracks and get on electrical components or that may contain solvents that will harm coatings DO NOT USE chlorine based bleaches or abrasives as they will damage the painted interior 3 Rinse with distilled water and wipe dry with a soft cloth Special care should be taken when cleaning around the sensing heads to prevent damage 7 2 Disinfecting Disinfect the incubator on a regular basis To disinfect the incubator perform the following steps 1 Remove all of the interior parts if assembled 2 Disinfect the incubator including all corners using a suitable disinfectant Shelves and shelf clips are autoclaveable DO NOT USE spray disinfectants that might leak through openings and cracks and get on electrical components or that may contain solvents corrosives or abrasives that will harm the painted coatings Special care should be taken when cleaning around sensing head
8. plug the unit cord into the receptacle Push the main power switch to the On position The digital temperature display will indicate a temperature value Turn the Overtemperature Safety Thermostat to its maximum position clockwise using a coin or flat head screwdriver Set The Main Temperature Control To enter the desired set point temperature press either the UP or DOWN arrow pad one time on the SET TEMPERATURE digital display The display will start to blink from bright to dim While blinking the display is showing the temperature set point which can be changed by pushing the UP or DOWN arrow pads to raise or lower the value If the arrow pads are not pushed within five 5 seconds the display will stop blinking and return to read the chamber temperature Allow several hours for the temperature to stabilize Calibrate The Main Temperature Control It is recommended that display is calibrated once the unit is installed in its working environment and has been stabile at set point for several hours Place a reference thermometer through the damper tube at the top of the unit adjacent to the exhaust port Be certain the thermometer does not touch any shelving Allow again for the temperature to stabilize until five 5 consecutive readings at one minute intervals show no temperature change Compare the reading on the reference thermometer with the digital display If there is an unacceptable difference put the display in calibrate mode by pressing
9. power supply 3 6 Burning In It is recommended that the unit go through a burning in process prior to operation This is to eliminate the smoking of protective coatings on the element Read sections 4 5 and 6 carefully to understand operating requirements To burn in turn the Overtemperature Safety to maximum and set the digital display to 200 Run for a minimum of one hour under ventilation until smoke dissipates PRECAUTIONS 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 4 11 The bottom surface of the chamber should not be used as a work surface This unit has been designed with a dampered vent from the chamber In order to work effectively and safely some precautions will need to be taken by the operator A In most applications the exhaust damper will need to be opened during drying or degassing for best results B THIS OVEN IS NOT DESIGNED TO HANDLE COMBUSTIBLE GASSES AND IS NOT AN EXPLOSION PROOF UNIT Do not place explosive combustible or flammable materials into the chamber Some of the out gassed by products be hazardous or unpleasant to operating personnel If this is the case the exhausts should be positively ventilated to the outside and dealt with according to local regulations Your dealer can provide you with a power exhaust which greatly helps under these applications Do not operate near noxious fumes Do not place sealed or filled containers in the oven chamber Do not cut or r
10. unit should be completely restrained from tipping during lifting or transport All moving parts such as shelves and trays should be removed and doors need to be positively locked in the closed position during transfer to prevent shifting and damage 3 4 Leveling The unit must sit level and solidly Leveling feet Supplied are to be installed in the holes at the base of the oven Turn them counterclockwise to raise the level and clockwise to lower the level If the unit must be moved turn the leveling feet in all the way to prevent damage 3 5 Cleaning The oven s interior was cleaned at the factory but not sterilized Remove all interior parts if assembled and clean the inside of the chamber thoroughly with a disinfectant that is suitable for your application Make sure to rinse the cleaned surface with a damp cloth using water only and dry the surfaces with a clean cloth DO NOT USE chlorine based bleaches or abrasives as they will damage the stainless steel surface DO NOT USE spray cleaners that might leak through openings and cracks and get on electrical parts or that may contain solvents that will harm the coatings A similar periodic cleaning is recommended WARNING Never clean the unit with alcohol or flammable cleaners with the unit connected to the electrical supply Always disconnect the unit form the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the
11. 0 It is independent of the Main Controller and guards against failure which would allow temperature to rise past the Main Controllers set point This allows continued operation of the oven until the problem can be corrected or service can be arranged It is not recommended that the unit be operated for extended periods of time using only the Overtemperature Safety as the temperature controller as temperature uniformity will suffer OTP Light This pilot lamp is directly above the Overtemperature Limit Thermostat The light will come on when the Safety Thermostat has been activated and taken control of the oven Under normal operating conditions the pilot lamp should never be on Timer Control This control is marked SET TIMER and consists of a digital display UP DOWN arrow pads a RESET PUSH pad a START STOP PUSH pad and a TIMER ACTIVATED light This control provides the ability to set a timed heat interval activate the start up of the timed heat cycle and shut down the timed heat cycle automatically Main Temperature Controller This control is marked SET TEMPERATURE and consists of the digital display and UP DOWN arrow pads for inputting set point temperatures and calibration 5 7 Temperature Activated Light This pilot lamp will be lit wnenever the elements are receiving power OPERATION 6 1 6 2 6 3 6 4 Connection to Power Supply Assure that the electrical power supply is properly configured and rated for the oven and
12. IT SPECIFICATIONS All Models Shipping Net 200 lbs 93 Ibs Dimensions Exterior WxDxH Interior WxDxH in in 25 50 x 25 563 x 33 3 16 50 x 19 50 x 16 437 Capacity Cubic Feet 3 0 Temperature Range Uniformity Recovery 10 above amb to 295 C 2 00 C at 150 C 6 min at 150 C 16 WIRING DIAGRAM SGO3 SGO3 2 CE3G CE3G 2 DOMESTIC NORTH AMERICAN MODELS MA CE MODELS _ 070 fo N ON J MODELS ne EMI FILTER x CE MODELS ONLY SS 154 Wi 2 FUSE ONLY STE 1 IF 5 wT a o so 00 17 Se 2 FUSES MAY BE REUIRED ON SOME EUROPEAN APPLICATIONS lt _ lt POWER A a 1 DURE HEATING ELEMENT 220 VOLT a Ci ERE a TUU UU HEAT TIMER O eK JISPLAY aye pele H Sla PSI S a TEMPERATUR CONTRO HOT E l o a
13. emove the ground prong from the power cord Do not use a 2 prong adapter plug Be sure that the power supply is of the same voltage as specified Disconnect the unit from its electrical source before proceeding to make any electrical repairs or replacements If a mercury thermometer is used for calibration and breakage should occur all spilled mercury MUST be completely removed from the chamber before continuing operation This oven is NOT designed for the use in Class I Il or 1 locations as defined by the National Electric Code This oven is not intended nor can it be used as a patient connected device CONTROL PANEL OVERVIEW 5 1 5 2 5 3 5 4 5 5 5 6 SET TEMPERATURE OVER TEMPERATL 2E ACTIVATEC Power Switch The main power switch the control panel green lighted I O controls all power to the oven It must be in the position before any systems are operational The green pilot light in the switch will be lighted when the switch is in the ON position Timer Switch The black I O power switch marked TIMER is located to the right of the main power switch It controls the power to the time circuit In the O Off position the oven heat is controlled with no timed duration In the position heat is controlled for a timed interval and then the heat shuts off Overtemperature Limit Thermostat This control is marked HIGH LIMIT and is equipped with an adjustment knob and a graduated dial from 0 1
14. emperature too high Display reads HI or 400 Chamber temp spikes over set point and then settles to set point Temperature too low Display reads LO Unit will not heat over a temperature that is below set point Unit will not heat up at all Indicated chamber temperature unstable 1 Controller set too high see section 6 3 2 Controller failed on call Customer Service 3 Wiring error call Customer Service Call Customer Service Recalibrate see section 6 4 1 High limit set too low see section 6 5 2 Controller set too low see section 6 3 3 Unit not recovered from door opening wait for display to stop changing 4 Unit not recovered from power failure or being turned off ovens will need several hours to warm up and stabilize 5 Element failure compare current draw to data plate 6 Controller failure call Customer Service 7 High limit failure confirm with front panel lights that Safety Thermostat is operating correctly 1 Bad probe or disconnected call Customer Service 2 If ambient temperature is lower than range of unit compare set points and ambient temperature to rated specifications in section 9 0 1 On F suffix models confirm that fan is moving and that amperage and voltage match data plate check for air movement in chamber 2 Confirm that set point is set high enough Safety Thermostat all the way clockwise and see if OTP light comes o
15. ls which should help in identifying the use and function of the available user adjustable components Symbol Identification Indicates that you should consult your operator s manual for further instructions Indique que l op rateur doit consulter le manuel d utilisation pour y trouver les instructions compl mentaires Indicates Temperature Rep re temp rature Indicates Overtemperature Protection Signale un d passement de temp rature Indicates AC Power NS Rep re secteur Indicates Timer Rep re minuteur Pal N Indicates Protective Earthground 7 Rep re de la terre de protection C Indicates Degrees Celsius Rep re degr s Celsius Indicates Manually Adjustable Signale un l ment r glable manuellement Indicates Potential Shock Hazard behind partition Signale un risque potentiel d lectrocution au del de la cloison id Indicates Unit should be recycled Not disposed of in land fill Indique l appareil doit tre recycl Ne pas jeter dans une d charge INSTALLATION Local city county or other ordinances may govern the use of this equipment If you have any questions about local requirements please contact the appropriate local agency Installation may be performed by the end user Under normal circumstance this unit is intended for use indoors at room temperatures between 5 and 40 C at no greater than 80 Relative Humidity at
16. must be used only for its intended purpose any alterations or modifications will void your warranty 1 1 1 2 1 3 1 4 Inspection The carrier when accepting shipment also accepts responsibility for safe delivery and is liable for loss or damage claims On delivery inspect for visible exterior damage note and describe on the freight bill any damage found and enter your claim on the form supplied by the carrier Inspect for concealed loss or damage on the unit itself both interior and exterior If any the carrier will arrange for official inspection to substantiate your claim Accessories Verify that your accessory package is complete All units should have a set of four 4 Leveling feet two 2 shelves and eight 8 shelf clips Return Shipment Save the shipping crate until you are sure all is well If for any reason you must return the unit contact your customer service representative for authorization and supply data plate information Make sure to include the model and unit serial number The service representatives will furnish you with a return authorization number and address for return Note Make sure this return authorization number appears on the unit packaging and shipping papers Units returned without proper authorization may not be accepted at the factory For information on where to contact Customer Service please see the manual cover GRAPHIC SYMBOLS Your oven has been provided with a display of graphic symbo
17. n 3 Check connections to sensor 4 Check calibration using independent thermometer follow instructions in section 6 4 1 Check amperage amperage should be virtually at maximum rated data plate amperage 2 do all controller functions work 3 Is the Safety Thermostat set high enough for diagnostics should be fully clockwise with the OTP light never on 4 Has the fuse circuit breaker blown 5 Has timer turned unit off 12 Will not maintain set point Display and reference thermometer don t match Can t adjust set points or calibration Calibrated atone temperature but not at another 1 0 1 may be normal 2 For G suffix models may vary 2 0 degrees 3 For F suffix models is fan working verify movement of air in chamber 4 ls ambient room temperature radically changing either door opening or room airflow from heaters or air conditioning stabilize ambient conditions 5 This may happen if exhaust stack is 100 open or if power exhaust is cycling adjust stack to at least 4 closed 6 Sensor miss located damaged or wires may be damaged check mounts for control and OTP sensors then trace wires or tubing between sensors and controls 7 Calibration sensitivity call Customer Service 8 High limit set too low be sure that Safety Thermostat is set more than 5 degrees over Main Controller set point check if OTP pilot is on continuously turn controller knob completely
18. on unit or in wall 3 See if unit is on 0 fan or heater and just controller is off 4 Check all wiring connections especially around the on off switch This is not an uncommon occurrence when first operating new units Put unit under vent and run at high temperature for one hour until smoke disipates 1 See cleaning procedure in section 7 0 2 Develop and follow standard operating procedure for specific application include definition of cleaning technique and maintenance schedule 1 See Contamination in chamber 2 Reduce air flow in chamber by dampening down exhaust port be sure to verify adequate temperature uniformity at the reduced air flow 3 Protect open samples from areas of maximum air current 0 inlet air ducts 14 PARTS LIST Description 115v 220V EMI Filter 2800503 2800502 Adjustable Feet 2700512 2700512 Control Knob 4450506 4450506 Cord Set 1800510 1800500 Door Latch 3800605 3800605 Fuse Holder N A 3300501 Fuse 10 Amp 250V N A 3300516 Fuse 16 Amp 3300513 N A I O On Off Power Switch 7850570 7850570 Overtemperature Safety Thermostat 1750615 1750648 Pilot Lamp Green 4650554 4650554 Pilot Lamp OTP Red 4650553 4650553 Shelf Clips 1250511 1250511 Shelf 5130725 5130725 Solid State Relay 7030527 7030527 Timer Switch 7850579 7850579 Main Control W Timer 1750675 1750674 Heating Element 9570827 9570827 15 Weight UN
19. s to prevent damage and around the door gasket so as not to impair the positive seal 3 If a hazardous material substance has been damaged in the unit immediately initiate your site s Hazardous Material Spill Containment protocol Contact your local Site Safety Officer and follow instructions per the policy and procedures established for your site 4 There are many commercially available disinfectants available that are non corrosive and non abrasive and suitable for use on painted surfaces Contact your local Site Safety Officer for detailed information for the proper disinfectants suitable for your operation Warning Never clean the unit with alcohol or flammable cleaners and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply Avertissement Ne jamais nettoyer l appareil l alcool ou avec des nettoyants inflammables et veiller ce que A les produits volatils ou inflammables soient enti rement vapor s avant de rebrancher le content d alimentation de l appareil Periodically inspect the door latch trim catch and gasket for signs of deterioration Failure to maintain the integrity of the door system will shorten the life span of the incubator No maintenance is required on electrical components If the incubator fails to operate as specified please review the TROUBLESHOOTING section prior to calling for service 11 TROUBLESHOOTING TEMPERATURE T
20. sent displayed setting and it will be necessary to restart all functions over again The values must be programmed in a consecutive manner with no delays between settings or the default will occur A Hour Function Press and hold the RESET pad until the digits starts to blink The blinking decimal shows between digits 2 and 3 In this mode pressing the UP or DOWN arrow pads increases or decreases the whole hour value from 0 to 99 digits 1 and 2 B Ten Minute Function After the correct value for hours is set push the RESET pad again The blinking decimal will now move one digit to the right between digits 3 and 4 Pushing the UP or DOWN arrow pads will increase or decrease the ten minute function allowing values between 0 and 5 to be set digit 3 One Minute Function After the correct ten minutes value is set push the RESET pad again The blinking decimal point will move one digit to the right beyond digit 4 and be located at the extreme bottom right of the display With the display in this mode pushing the UP or DOWN arrow pad will increase or decrease the one minute function allowing the value of digit 4 to be adjusted between 0 and 9 D Activation Pause until the timer stops blinking After all settings are made push the START STOP button The Timer Activated light will come on and after a brief pause the present oven temperature settings will be valid and heating will begin The oven will now heat up control at the set point
21. voltage to motor 2 If shaft rubs or is frozen relieve binding and retest 1 If noise is from the motor tap the top of motor shaft with ball peen hammer 2 If the sound gets worse tap the other end of the shaft avoiding touching the blower wheel 3 If there is no change call Customer Service 1 Adjust hinge blocks or twist the door 2 Confirm that unit has not been damaged and body is not square 3 Check physical condition of gasket for tears or punctures OTHER 13 Controller on at all times locked up Controller timer resets on its own Front panel displays are all off Unit or wall fuse circuit breaker is blown Unit will not turn on Unit is smoking Out of box Contamination in chamber Contamination in sample 1 Adjust set point to room temperature If the unit is still heating replace the solid state relay 2 Turn unit off and on to reset 3 If cannot change any condition on the front panel call Customer Service 1 Confirm that power from wall is consistent and within specifications 2 Call Customer Service with serial number 1 Check connections to the temperature display control board and assure that all are tight and in the correct orientation 2 Check for wire damage 1 Check wall power source 2 Compare current draw and compare to specs on data plate 3 See what other loads are on the wall circuit 1 Check wall power source 2 Check fuse circuit breaker
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