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Installation/Service Manual
Economy Oven
Models 14EG (6520/6521), 25EG (6522/6523), 45EG (6524/6525),
25EM (6526/6527), 45EM (6528/6529)
Thermo Electron Corporation
Millcreek Road, Box 649
Marietta, Ohio 45750
USA
Phone: 740-373-4763
Toll Free: 800-848-3080
FAX: 740-373-4189
Manual P/N 3177886
Rev E Dated 11AUG05
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Table of Contents
Related Manuals for Thermo 14EG
Summary of Contents for Thermo 14EG
- Page 1 Installation/Service Manual Economy Oven Models 14EG (6520/6521), 25EG (6522/6523), 45EG (6524/6525), 25EM (6526/6527), 45EM (6528/6529) Thermo Electron Corporation Millcreek Road, Box 649 Marietta, Ohio 45750 Phone: 740-373-4763 Toll Free: 800-848-3080 FAX: 740-373-4189 Manual P/N 3177886 Rev E Dated 11AUG05...
- Page 2 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 LIABLE FOR ANY DAMAGES, DIRECT OR INCIDENTAL, ARISING OUT OF OR RELATED TO THE USE OF THIS MANUAL.
- Page 3 REVISION STATUS INDEX DATE AMENDED PAGES NOTES Initial release 6/99 11/01 Add "plastics can melt" note 11/02 2,5,7,8,11 High limit cutout for models 25 & 45 replaced by hydraulic thermostat (ECO 020809A) 9/04 12, 13 Corrected safety thermostat callout 36100121 8/05 new manual #, manufacture location...
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Page 4: Table Of Contents
Contents 1. INTRODUCTION ......................1 2. UNPACKING AND DAMAGE ..................1 3. GENERAL INFORMATION....................2 4. SPECIFICATIONS ......................3 5. INSTALLATION ....................... 4 6. EXPLANATION OF CONTROLS ..................4 7. OPERATION ........................5 8. MAINTENANCE & SERVICING ..................7 9. PARTS REPLACEMENT ....................8 10. - Page 5 Warnings and Notices Important: READ THESE NOTICES BEFORE INSTALLING THE UNIT General Notices AS A ROUTINE LABORATORY PRECAUTION, ALWAYS WEAR SAFETY GLASSES WHEN WORKING WITH THIS APPARATUS. INSTALLATION SHOULD BE COMPLETED BY QUALIFIED PERSONNEL ONLY. WITHIN THE MECHANICAL CONVECTION CABINETS, OBJECTS SHOULD NOT BE PLACED ON THE SHELVES IN SUCH A MANNER TO BLOCK THE MOVEMENT OF HEATED AIR INTO THE CHAMBER.
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Page 6: Introduction
1.01 Your satisfaction and safety are 2.01 Save all packing material if apparatus is important to Thermo and a complete received damaged. This merchandise was understanding of this unit is necessary to attain carefully packed and thoroughly inspected these objectives. -
Page 8: General Information
3.03.1 Air is drawn into the chamber through 3.02 Models 14EG, 25EG and 45EG employ vent tubes located in the bottom of the oven and gravity convection as a method of heat transfer. is heated as it passes over the electric heating Gravity convection is defined as the natural coils. -
Page 10: Specifications
Economy Ovens 4. Specifications Model Number 14EG 25EG 25EM 45EG 45EM Convection Gravity Gravity Mechanical Gravity Mechanical Technique Temperature Control Hydraulic Electronic Electronic Electronic Electronic 0° to 250°C 0° to 250°C 0° to 250°C 0° to 250°C 0° to 250°C... -
Page 12: Installation
Electrical Connections - 6.02 Three-Heat Switch - Model 14EG has The 14EG, 25EG and 25EM are provided a three heat switch. This switch also functions as with a 120V, 15 amp, three-prong (grounding) the main "on/off" switch. With this switch it is plug. -
Page 13: Operation
1. Press the ON/OFF switch for power to the Insert shelf supports into the holes punched in ON position. For the 14EG only, select the the side walls of the inner chamber. Insert the desired temperature range. shelves into the shelf supports and try to keep an equal distance between shelves whenever 2. - Page 14 4. Allow the chamber sufficient time to heat up NOTE: WITHIN MECHANICAL and observe the temperature on the CONVECTION CABINETS, OBJECTS thermometer in the vent cap. The lamp SHOULD NOT BE PLACED ON THE above the Temperature Control knob should SHELVES IN SUCH A MANNER TO BLOCK turn on and off at regular intervals which THE MOVEMENT OF HEATED AIR INTO...
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Page 16: Maintenance & Servicing
MAINTENANCE AND SERVICING 8.01 Troubleshooting 8.03 Heat Loss WARNING Inspect door gasket to make certain it fits firmly DANGEROUS VOLTAGES EXIST WITHIN against cabinet at all points. Replace gasket if THIS UNIT. SERVICE SHOULD BE torn or damaged. PERFORMED ONLY BY QUALIFIED PERSONNEL. -
Page 18: Parts Replacement
HEATER COLD RESISTANCE TABLE TO lay it on it's face. FIND THE APPROPRIATE VALUE. BE SURE Model 14EG: Then remove three screws TO DISCONNECT AT LEAST ONE HEATER securing the front z-bracket,screws are LEAD FROM THE TERMINAL STRIP located directly above the control panel. - Page 19 Turn oven on its back or side and remove Model 14 EG: Remove screws securing bottom plate. Remove motor mounting thermostat to control panel. Remove bracket from underside of oven. two screws securing angle cover, lo- Replace with new motor, reinstall in cated inside of inner chamber on the reverse order.
- Page 20 Replace Door Handle Replace door handle by removing inner door liner, door gasket and door insulation. Remove screws which secure door handle and replace handle. Reassemble in reverse order. 9.07 Door Latch Grabber (on body of unit) Disconnect power. Remove screws which secure door latch grabber and remove them from front.
- Page 21 LINE CORD ASS'Y LEAD ASSY 3 PLACES GROUND HEATER 3 HEAT SWITCH THERMOSTAT 2 PLACES TEMPERATURE CONTROL TEMPERATURE LEAD ASSY. SAFETY CONTROL THERMOSTAT THERMOSTAT LEAD ASSY SAFETY LIGHT ASSY. 2 PLACES INTERNAL SWITCH CONNECTIONS 2 & 3 HIGH WIRING DIAGRAM - MODEL 14 EG...
- Page 22 WHITE GREEN BLACK CHASSIS GROUND POWER SWITCH BLOWER TB1-2 TB1-1 MOTOR TEMP TB1-2 TB1-1 CONTROL TEMP TB1-3 TB1-4 SAFETY TB1-2 CONTROL THERMOSTAT TB1-1 LAMP EMR-1 SAFETY HEATER CUTOUT 230 V LAMP SENSOR SPECS: HEATER 318K OHMS @ 0˚C 115 V 6.6K OHMS @ 100˚C HEATER COLD RESISTANCE BETWEEN TB1-4 AND TB1-2...
- Page 23 ° 0 , T I...
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Page 24: Warranty
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.
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