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01/2014

10 APPENDIX B - REFERENCES

The following sources of additional information are provided for reference in these
instructions. This is not presented as a complete list of all possible reference sources.

10.1 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

10.2 National Fire Protection Association

One Batterymarch Park
Quincy, Massachusetts 02209-9101

Most current issue of:

NFPA 86 - Ovens and Furnaces
NFPA 70 - National Electric Code
NFPA 54 - National Fuel Gas Code
NFPA 10 - Standard for Portable Fire Extinguishers
NFPA 11 - Standard for Low-Expansion Foam
NFPA 12 - Standard on Carbon Dioxide Extinguishing Systems
NFPA 13 - Standard for the Installation of Sprinkler Systems
NFPA 14 - Standard for the Installation of Standpipe and Hose Systems
NFPA 15 - Standard for Water Spray Fixed Systems for Fire Protection
NFPA 17 - Standard for Dry Chemical Extinguishing Systems
NFPA 17A-Standard for Wet Chemical Extinguishing Systems
NFPA 25 - Standard for the Inspection, Testing and Maintenance of Water-Based

Fire Protection Systems

NFPA 30 - Flammable and Combustible Liquids Code
NFPA 31 - Standard for the Installation of Oil-Burning Equipment
NFPA 34 - Standard for Dipping and Coating Processes Using Flammable or

Combustible Liquids

NFPA 58 - Liquified Petroleum Gas Code
NFPA 79 - Electrical Standard for Industrial Machinery
NFPA 91 - Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists

and Noncombustible Particulate Solids

10.3 ASME Publications

American Society of Mechanical Engineers
345 East 47

th

Street

New York, NY 10017

The most current issue of:
ASME Boiler and Pressure Vessel Code
ASME B31.1 - Power Piping
ASME B31.3 - Process Piping

10.4 ANSI Publications:

American National Standards Institute
11 West 42

nd

Street, 13

th

Floor

New York, NY 10036

The most current issues of:
ANSI Z117-1 - Safety Requirements for Confined Spaces

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Содержание Furnaces

Страница 1: ...X B REFERENCES 11 APPENDIX C MINIMUM PERIODIC MAINTENANCE REPORT 12 APPENDIX D SAFETY SHUT OFF VALVE LEAK TEST PROCEDURE 13 APPENDIX E WARRANTY AND LIMITATIONS OF REMEDIES Following these GENERAL INST...

Страница 2: ...or damage which does not become apparent until the merchandise has been unpacked The contents may be damaged in transit due to rough handling even though the carton may not show external damage When...

Страница 3: ...in in the furnace too long thereby encouraging combustion Using a furnace for a process other than that for which it was designed 2 1 4 Furnace operator should shut down the furnace immediately and no...

Страница 4: ...ems in accordance with NFPA 11 Dry Chemical Extinguishing Systems in accordance with NFPA 17 Water Mist Systems in accordance with NFPA 750 The extent of protection required will depend upon the const...

Страница 5: ...or electrical equipment with guards removed Operating with guards removed could result in bodily injury 2 4 8 Furnaces with vertical lift doors or top loading doors must be blocked open before passin...

Страница 6: ...designed and manufactured in accordance with applicable National Codes in effect as of the date of manufacture It is the responsibility of the end user to update equipment as necessary to comply with...

Страница 7: ...ations unless they are designed to comply with the applicable requirements of NFPA 70 ANational Electric Code see Appendix B 3 1 7 Equipment shall be protected from corrosive external processes and en...

Страница 8: ...tion of combustible material combustible material shall be located at a safe distance from furnace and furnace ductwork The National Fire Protection Association NFPA Standard 86 specifies a minimum di...

Страница 9: ...on to the building will require additional make up air to the building to prevent the building from operating under negative pressure Operating building under negative pressure will reduce exhaust rat...

Страница 10: ...itable traps or other safe locations 3 5 10 Ducts handling combustible solids shall be designed to minimize the accumulation of solids within the ducts 3 5 11 Exhaust ducts that will contain combustib...

Страница 11: ...fuel to be turned off in an emergency and shall be located so that fire or explosion at the furnace does not prevent access to this valve Operators should be instructed on the location of this valve a...

Страница 12: ...ude a safety shut off such as a circuit breaker or fused disconnect switch between your power supply and the equipment 3 7 3 The furnace must be adequately grounded Grounding wire must be sized in acc...

Страница 13: ...bove process may have to be repeated The following procedure must be followed prior to placing your furnace in operation After the furnace has been installed it is ready for initial dry out Before the...

Страница 14: ...s that had been removed for shipment or installation At no time should equipment be operated if covers or guards are open removed or partially closed 4 5 When the equipment is placed in operation chec...

Страница 15: ...tion 5 PROCESSING and Section 7 MAINTENANCE 4 11 1 Setpoints of all safety interlocks shall be documented for future reference 4 11 2 Supply piping shall be checked for leaks 4 11 3 Personnel operatin...

Страница 16: ...it interlock should indicate in the same temperature units F or C as the main controller 5 5 An alarm should be installed that will sound upon the excess temperature limit interlock being activated Th...

Страница 17: ...is located on the wall of the heat chamber 5 9 2 Proper balance of the fresh air inlet and exhaust outlet are essential for uniform air temperature Room air entering the fresh air inlet expands when...

Страница 18: ...See Section 7 MAINTENANCE and Appendix C MINIMUM PERIODIC MAINTENANCE REPORT 6 4 Safety devices shall not be removed or rendered ineffective by bypassing them electrically or mechanically 6 5 Minimum...

Страница 19: ...ation on the materials involved included elsewhere in this manual 7 3 Disconnect fuel electric power steam compressed air and any other energy source before servicing equipment Furnaces operate under...

Страница 20: ...t surfaces duct work air inlets exhaust outlets filters control enclosures motors safety switches door latches and door hinges Care must be taken in cleaning any combustible build up to avoid creating...

Страница 21: ...resistant grease is necessary 7 8 5 2 All bearings including those on blowers exhauster or conveyor system should be greased every six 6 months or 500 hours of operation with a good grade of machine g...

Страница 22: ...element connections at terminals for tightness 7 8 9 Fuel Gas Furnaces 7 8 9 1 Check main safety shut off valves for leakage See Appendix D Main Safety Shutoff Valve Leak Test Procedure 7 7 9 2 Check...

Страница 23: ...to make sure temperature controller calibration is correct 7 8 11 2 Heat furnace above setting of excess temperature limit interlock and make sure excess temperature limit interlock shuts down furnace...

Страница 24: ...t in a reduced operating temperature In this case the furnace heater will be running continuously i e 100 output This can be corrected by closing the exhaust damper until the maximum operating tempera...

Страница 25: ...INTERLOCK ACTUATION Depending upon the specific device used it may be tripped by either an excessively high furnace temperature or a sensing element failure Before placing the equipment back into oper...

Страница 26: ...adequate safety ventilation and sometimes reversal of airflow in the exhaust stack c A record of fires or puffs from work in a particular furnace may indicate inadequate safety ventilation dangerously...

Страница 27: ...tion which cannot be obtained with the main heating element contactors or SCR power controller alone The redundant separate contactors provide a second cutoff device to the heating elements which does...

Страница 28: ...cally heated furnaces the circuit is opened to the heating element contactors or SCR power controller and separate contactors On gas fired equipment the control circuit is opened to the control and sa...

Страница 29: ...limit interlock described previously except that the sensor is located in the heating element chamber or gas burner combustion chamber of the furnace This device will detect and be actuated when the...

Страница 30: ...ation of Standpipe and Hose Systems NFPA 15 Standard for Water Spray Fixed Systems for Fire Protection NFPA 17 Standard for Dry Chemical Extinguishing Systems NFPA 17A Standard for Wet Chemical Exting...

Страница 31: ...ent per batch or per hour at an operating temperature of ________ F 3 ____ All electrical connections are tight without stray strands 4 ____ All contactors relays motor starters and other components w...

Страница 32: ...xhausters combustion blowers and other fans are rotating in the correct direction 23 ____ Check exhaust rate if it is critical for safe operation such as required for removing flammable solvents or co...

Страница 33: ...mpare temperature controller indication and excess temperature limit interlock indication to confirm they are similar 45 ____ Disconnect one side of thermocouple connection to confirm upscale break pr...

Страница 34: ...ng and must be replaced Do not continue to operate burner until valve is replaced 8 Close the test petcock A remove the 1 4 tube and replace the leak test tap plug B FIRST SAFETY SHUT OFF VALVE 1SSOV...

Страница 35: ...k located between the pilot shut off solenoid valves and the burner SECOND SAFETY SHUT OFF VALVE 2SSOV 27 Turn on the Blower Gas cocks open and exhauster still running from step 17 and turn the HEAT s...

Страница 36: ...r to obtain repair or replacement under this warranty the user must deliver the defective product or part to GRIEVE s factory on a prepaid basis promptly after discovery of the defect GRIEVE s warrant...

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