Related Manuals for Grieve NB-350
Summary of Contents for Grieve NB-350
- Page 1 INSTRUCTIONS BENCH OVENS MAXIMUM MODEL OPERATING TEMPERATURE NB-350 350 F DR-350 350 F NB-550 550 F NT-800 800 F NTR-800 800 F NT-1000 1000 F NTR-1000 1000 F...
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Page 2: Table Of Contents
BENCH OVEN GENERAL INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS FOR MODELS NB-350, DR-350, NB-550, NT-800, NTR-800, NT-1000 AND NTR-1000 TABLE OF CONTENTS SHIPPING DAMAGE & HANDLING PROPER OVEN APPLICATION General Flammable Solvents Combustible Material Personnel Hazards Maintenance and Inspection INSTALLATION Location... -
Page 3: Shipping Damage & Handling
1 SHIPPING DAMAGE AND HANDLING DO NOT RETURN DAMAGED MERCHANDISE TO US. FILE YOUR CLAIM AS OUTLINED BELOW This merchandise has been thoroughly inspected and carefully packed before leaving our plant. Responsibility for its safe delivery was assumed by the carrier at the time of shipment. -
Page 4: Proper Oven Application
2 PROPER OVEN APPLICATION GENERAL 2-1.1 W hile ovens are extremely versatile, they are usually purchased with a specific application in mind. If your process has changed significantly or if you should have reason to doubt that a specific application is a proper use of the equipment, consult the factory before proceeding. -
Page 5: Combustible Material
COMBUSTIBLE MATERIAL 2-3.1 Introduction of combustible materials (such as paper, cardboard or wood) into the oven should be avoided because it might cause a fire. Do not use combustible racks, trays, holders, spacers, etc. Periodically, clean all combustible material from non-combustible racks, trays, holders, spacers, etc. If combustible products must be processed in an oven, extreme care must be taken to ensure that the operating temperature does not exceed the ignition temperature of the product. -
Page 6: Maintenance And Inspection
MAINTENANCE AND INSPECTION 2-5.1 Regularly scheduled inspection and maintenance of all safety devices shall be performed by user. Failure to do this may result not only in fire or explosion damage, but also contribute to accidental shutdowns and loss of production. See Section 7 - AMaintenance@ and Appendix B - AMinimum Periodic Maintenance Report@. -
Page 7: Installation
INSTALLATION LOCATION 3-1.1 Ovens shall be located to protect them from damage by external heat, vibration and mechanical hazards. 3-1.2 Ovens shall be located to minimize exposure to power equipment, process equipment and sprinkler risers. Unrelated stock and combustible materials shall be maintained at a fire-safe distance but not less than 2-1/2 feet from an oven or ductwork. -
Page 8: Ventilation
3-3.2 Do not place the oven up against a wall. A minimum air space of 3" must be provided on all sides to allow for air circulation, with additional space being provided for ovens operating over 450 F (232 C) to keep temperature at adjacent structures and materials below 160 F (71 C). -
Page 9: Thermometer
3-5.4 Ducts handling fumes that leave a combustible deposit shall be provided with clean-out doors and such doors should be equipped with tight fitting doors or covers. It is important that ovens and ducts be kept clean if they are subjected to a build-up of flammable deposits of dust or other combustible debris. -
Page 10: Prior To Placing Oven In Service
PRIOR TO PLACING THE OVEN IN SERVICE Read instruction manual completely. After the installation is completed, replace all covers and guards that had been removed for installation. At no time should equipment be operated if covers or guards are open, removed or partially closed. Check incoming voltage against that shown on the nameplate. -
Page 11: Processing
PROCESSING DO NOT LEAVE THIS EQUIPMENT IN OPERATION UNATTENDED W hen using any heat processing equipment there is always the risk of overheating due to a component malfunction. A trained operator should always be present. If this is not possible, the oven should be located where overheating will not cause damage to the building, adjacent stock or endanger personnel. -
Page 12: Safety Equipment
SAFETY EQUIPMENT Practically all explosions and fires in ovens can be traced back to human error. It should be noted that: 6-1.1 For the protection of personnel and property, careful consideration should be given to the supervision and monitoring of conditions that could cause, or could lead to, a real or potential hazard on any installation. -
Page 13: Maintenance
7 MAINTENANCE For safe oven operation, a preventative maintenance program must be developed and followed for each individual oven application. The user should review recommendations from their insurance underwriters. W e suggest the review of Factory Mutual (FM) Specification 6-9 on Industrial Ovens and Dryers and the National Fire Protection Association (NFPA) Specification 86 on Ovens and Furnaces. - Page 14 7-5.3 Oven Body 7-5.3.1 Do not allow accumulation of combustible material or other foreign matter in the work space, heat chamber (including heating elements) ductwork, air inlets, exhaust outlets, control enclosures, motors, safety switches, door latches, and door hinges. Care must be taken in cleaning any combustible build-up to avoid creating a source of ignition (spark).
- Page 15 7-5.7 Fans 7-5.7.1 Tighten set screws between fans and motor shaft before operating and check periodically. 7-5.7.2 Periodically inspect and clean fan wheels to remove any build-up of deposits on the blade surfaces. 7-5.8 Contactors (Note: Some temperature controllers and excess temperature limit interlocks control the current to the heating elements directly.
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Page 16: Trouble Shooting
8 TROUBLE SHOOTING NO HEAT 8-1.1 Excess temperature limit interlock actuation The excess temperature limit interlock may be tripped by either an excessively high oven temperature or a sensing element failure. Before placing the equipment back into operation, it should be determined what caused the excess temperature limit interlock to actuate and the condition be corrected. - Page 17 8-2.5 Defective Thermocouples Some temperature controllers and excess temperature limit interlocks are provided with thermocouples for sensing. Compare known reading at sensor inside oven to controller display. If it varies grossly, sensor may have to be replaced. If sensor is damaged or broken open, the controller display may give thermocouple error codes (see controller manual for proper error code meanings).
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Page 18: Appendix A - References
9 APPENDIX A - REFERENCES The following sources of additional information are referenced in these instructions. This is not presented as a complete list of all possible reference sources. Factory Mutual Engineering Corporation 1151 Boston-Providence Turnpike P.O. Box 9102 Norwood, Massachusetts 02062 Attn: Publications Order Processing Specifications 6-9, Industrial Ovens and Dryers National Fire Protection Association... - Page 19 10 APPENDIX B - MINIMUM PERIODIC BENCH OVEN INSPECTION REPORT Model: _________________________________________________ Serial No.: _________________ Inspected By: ___________________________________________ Date: _________________ BEFORE APPLYING POW ER CHECK THAT: ____ No changes in process have been made including types of materials processed and temperature: -Oven originally purchased for: (Reference previous Inspection Report)______________ ______________________________________________________________________...
- Page 20 10 APPENDIX B - MINIMUM PERIODIC BENCH OVEN INSPECTION REPORT APPLY POW ER AND CHECK: 15. ____ Supply voltage agrees with oven nameplate - measure and record: ____________. 16. ____ Check that temperature controller does not cycle separate (back-up) contactor. 17.
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Page 21: Appendix C - Replacement Parts List
APPENDIX C - REPLACEMENT PARTS LIST (Please specify oven model and voltage when ordering) ITEM NUMBER MODEL NB-350 -Tubular heating element .............. B1000 -Electrical power cord with plug (115 volt only) ......PW RCRD12GA -Temperature controller ..............B10-2-48 -Excess temperature limit interlock ..........LCH400 -Temperature controller knob. - Page 22 APPENDIX C - REPLACEMENT PARTS LIST (Cont=d): MODEL NT/NTR-800 ITEM NUMBER -Door (specify whether right or left)...RIGHT ......... DOORNT8R LEFT ........DOORNT8L MODEL NT/NTR-1000 -Door (specify whether right or left)...RIGHT ......... DOORNT1R LEFT ........DOORNT1L MODEL NTR ONLY -Blower wheel................FG05203163HIW -115 volt, AC motor with 5/16"...
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Page 23: Appendix D - W Arranty And Limitations Of Remedies
APPENDIX D - W ARRANTY AND LIMITATIONS OF REMEDIES Any equipment sold by GRIEVE is warranted for one (1) year after the Purchaser receives the equipment to be free from defects of material and workmanship. THERE ARE NO W ARRANTIES W HICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF;...
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