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.
TABLE OF CONTENTS SECTION 1.0 RECEIVING AND INSPECTION SECTION 2.0 GRAPHIC SYMBOLS SECTION 3.0 INSTALLATION SECTION 4.0 PRECAUTIONS SECTION 5.0 CONTROL PANEL OVERVIEW SECTION 6.0 OPERATION SECTION 7.0 MAINTENANCE SECTION 8.0 TROUBLESHOOTING SECTION 9.
1 Section 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 equipment must be used only for its intended purpose; any alterations or modifications will void your warranty. 1.1 Inspection: The carrier, when accepting shipment, also accepts responsibility for safe delivery and is liable for loss or damage claims.
2 Section GRAPHIC SYMBOLS Your oven has been provided with a display of graphic symbols 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'opérateur doit consulter le manuel d'utilisation pour y trouver les instructions complémentaires.
3 Section 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 25C ) and with a supply voltage that does not vary by more than 10%.
4 Section PRECAUTIONS 4.1 The bottom surface of the chamber should not be used as a work surface. 4.2 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. 4.3 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.
5 Section CONTROL PANEL OVERVIEW 5.1 Power Switch: The main power switch on the control panel (green lighted I/O) controls all power to the oven. It must be in the I/On position before any systems are operational. The green pilot light in the switch will be lighted when the switch is in the ON position. 5.2 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.
5.7 Temperature Activated Light: This pilot lamp will be lit whenever the elements are receiving power.
6 Section OPERATION 6.1 Connection to Power Supply: Assure that the electrical power supply is properly configured and rated for the oven and plug the unit cord into the receptacle. 6.2 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. 6.
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 present 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.
7 Section 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, débrancher le cordon secteur de la source d'alimentation.
8 Section TROUBLESHOOTING TEMPERATURE Temperature too high. 1/ Controller set too high-see section 6.3 2/ Controller failed on – call Customer Service. 3/ Wiring error – call Customer Service. Display reads "HI" or "400"+. Call Customer Service Chamber temp spikes over set point and then settles to set point. Recalibrate – see section 6.4. Temperature too low 1/ High limit set too low – see section 6.5. 2/ Controller set too low – see section 6.3.
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/ Is 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 ¼ closed.
Controller on at all times - "locked-up" 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. Controller timer resets on its own 1/ Confirm that power from wall is consistent and within specifications. 2/ Call Customer Service with serial number.
9 Section PARTS LIST Description EMI Filter Adjustable Feet Control Knob Cord Set Door Latch Fuse Holder Fuse, 10 Amp 250V Fuse, 16 Amp I/O (On/Off) Power Switch Overtemperature Safety Thermostat Pilot Lamp, Green Pilot Lamp, OTP Red Shelf Clips Shelf Solid State Relay Timer Switch Main Control W/Timer Heating Element 115v 220V 2800503 2700512 4450506 1800510 3800605 N/A N/A 3300513 7850570 1750615 4650554 4650553 1250511 5130725 7030527 7850579 1750675 9570827 2800502 2700512 4450506 1800500 3800605 3
UNIT SPECIFICATIONS All Models Weight Dimensions Shipping Net 200 lbs. 93 lbs. Exterior WxDxH (in.) Interior WxDxH (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 225C +2.00C at 150C 6 min.
WIRING DIAGRAM SGO3 / SGO3-2 (CE3G / CE3G-2) 17
