Grieve Furnaces Installation & Operation Manual
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Grieve Furnaces Installation & Operation Manual

Grieve furnaces general installation, operation and maintenance instructions
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GENERAL INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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APPENDIX C - MINIMUM PERIODIC MAINTENANCE REPORT
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Following these GENERAL INSTRUCTIONS in your manual are the following:
-OPERATING INSTRUCTIONS SPECIFIC FOR YOUR EQUIPMENT
-MECHANICAL PARTS LIST
-ELECTRICAL WIRING AND COMPONENT PARTS LIST
-LITERATURE AND INSTRUCTIONS ON COMPONENTS
These GENERAL INSTRUCTIONS have been written for many different types of furnaces,
therefore, some equipment or components referred to may not be present on your particular
piece of equipment.
After reading these GENERAL INSTRUCTIONS, also read the specific OPERATING
INSTRUCTIONS written for your equipment. An additional copy of the OPERATING
INSTRUCTIONS is provided in a plastic cover. Post these instructions at the furnace for the
operator to reference.
W:\ELECTRICAL\INSTRUCT\FURNACE\FURNACE GENERAL INSTRUCTIONS 2011.DOC
FOR FURNACES

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01/2014

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Summary of Contents for Grieve Furnaces

  • Page 1: Table Of Contents

    -ELECTRICAL WIRING AND COMPONENT PARTS LIST -LITERATURE AND INSTRUCTIONS ON COMPONENTS These GENERAL INSTRUCTIONS have been written for many different types of furnaces, therefore, some equipment or components referred to may not be present on your particular piece of equipment.

  • Page 2: 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. Claims for loss or damage to the contents must be made with the carrier, as follows: 1-1 VISIBLE LOSS OR DAMAGE Any external evidence of loss or damage must be noted, at the time of delivery, on the freight...

  • Page 3: Proper Furnace Application

    PROPER FURNACE APPLICATION 2-1 GENERAL 2-1.1 While furnaces 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 4: Combustible Material

    2-3.2 Furnaces containing or processing sufficient combustible materials (including consideration for combustible drippings or deposits) to sustain a fire shall be equipped with an automatic fire protection system including areas in exhaust ducts that could accumulate combustible material.

  • Page 5: Maintenance And Inspection

    2-4.7 Do not operate mechanical 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 passing beneath them. A falling door may cause bodily injury. A safety pin, latch or support strut is provided for this purpose.
  • Page 6 RETROACTIVITY This equipment has been 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 future code changes. If you are in doubt, contact manufacturer to review your equipment design against current National Codes.

  • Page 7: Installation

    10 feet from a furnace, a furnace heater or ductwork. 3-1.4 Furnaces shall be located to minimize exposure to people from the possibility of injury from fire, explosion, asphyxiation, and hazardous materials and shall not obstruct personnel travel to exit ways.

  • Page 8: Clearances

    CLEARANCES 3-3.1 Furnaces shall be located with adequate space above and on all sides to allow for inspection, maintenance and operator access. Provisions also shall be included for unobstructed discharge of building sprinklers, the installation of automatic fire protection system within the furnace, if necessary and the proper functioning of explosion relief doors and panels.

  • Page 9: Exhaust Ductwork

    3-4.5 Some furnaces are equipped with an exhaust outlet. This outlet must be vented by an exhaust flue to an exhaust stack for discharge to an outside location, in accordance with local codes and requirements. Do not connect exhaust outlet directly to exhaust stack.

  • Page 10: Fuel Gas Supply

    It is important that furnaces and ducts be kept clean if they are subjected to a build-up of flammable deposits of condensed solvent, oil vapors, dust or other combustible debris.
  • Page 11 The cross section of the vent manifold should be not less than the area of the largest vent line plus 50% of additional lines. 3-6.8 Vent lines from multiple furnaces shall not be manifolded together. 3-6.9 A normally open vent valve between safety valves shall not be combined with other vents.

  • Page 12: Electrical

    3-7 ELECTRICAL 3-7.1 All electrical connections should be made in accordance with the appropriate local and national codes. Refer to NFPA 70 -- National Electric Code. (See Appendix B) 3-7.2 Properly size the electrical supply using information provided on the furnace nameplate.

  • Page 13: Prior To Placing Furnace In Service

    Operating Manual or follow the general procedure below: INSULATION DRY-OUT SCHEDULE All furnaces will produce smoke and odors when first heated. The smoke and odors come from three sources: 1) Surfaces that have been painted after test;...
  • Page 14 2. Increase to 1200°F and hold for two (2) hours or until smoke and moisture no longer escape from the open door. 3. If the furnaces= maximum temperature is 1200°F, hold at 1200°F for two (2) additional hours or until smoke and moisture no longer escape from the open door.
  • Page 15 4-11 Commissioning is required prior to releasing equipment for production. The party responsible shall insure that installation is complete and done correctly. Safety systems should be tested and operators trained. At the time of commissioning, the first Periodic Maintenance Inspection should be performed to familiarize personnel with the equipment.

  • Page 16: Processing

    Furnaces handling flammable solvents and fuel fired furnaces have a minimum safe exhaust rate. These furnaces have cut off dampers on fresh air and exhaust. Do not close the fresh air or exhaust beyond these settings.
  • Page 17 (or too little exhaust) can result in excessive leakage of hot air at the door seal. 5-10 Where furnaces are equipped with louvered ductwork, the louvers may be adjusted to give the best performance for your particular process. The louvers were originally set at the factory in an empty furnace.

  • Page 18: Safety Equipment

    SAFETY EQUIPMENT Practically all explosions and fires in furnaces 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 19: Maintenance

    Do not defeat the operation of this door interlock. Furnaces with vertical lift doors or top loading doors must be blocked open before entering. Falling door may cause bodily injury. A safety pin, latch or support strut is provided for this purpose.
  • Page 20 (spark) should be avoided and only then after all combustible deposits or debris have been removed. 7-8.3-6 When cleaning the inside of furnaces, changing heating elements, repairing insulation or performing any task that produces dust from the refractory...
  • Page 21 Use a NIOSH approved respirator. Use goggles or safety glasses with side shields Use leather gloves, long-sleeved and long-legged, loose fitting clothing. Handle materials in a manner that will create the least amount of dust. Consult the MSDS information on the materials involved included elsewhere in this manual.
  • Page 22 7-8.8.3 Inspect heating elements for contamination, distortion and adequate support. 7-8.8.4 Check electrical heating 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 pilot safety shut off valves for leakage.
  • Page 23 7-8.9.9 Check that pilot and main burner lights easily and that flame appears blue with yellow tips. 7-8.9.10 Check gas pressure against furnace nameplate and adjust as necessary. 7-8.9.11 Inspect flame rod; clean and reposition as necessary. 7-8.9.12 Inspect control valve linkage to motor operator for free and smooth operation. 7-8.10 Safety Switches 7-8.10.1 Check each air flow safety switch operation by disconnecting both of the air tubes from each air flow switch to make sure furnace heat is shutdown.

  • Page 24: Troubleshooting

    8 TROUBLESHOOTING NO HEAT 8-1.1 Air flow switch An air flow switch (which can be located at any blower) may be holding the control circuit open. The air flow switch senses a pressure differential across the blower. If there is no pressure differential, the heat control circuit is not closed. If the air flow switch opens, it will also reset the purge timer (if one exists).
  • Page 25 8-2.8 On Gas Heated Furnaces, Burner or Gas Pressure Adjustment Contact your local gas company's service engineers. It is recommended to have them check all installations as they are aware of the many variables which can affect your operation.
  • Page 26 INADEQUATE VENTILATION SYMPTOMS Vapor explosions often occur some time after ventilation becomes inadequate. Investigate the following symptoms and take corrective action immediately: a. A cold exhaust duct or stack while the furnace is operating usually indicates reversal of flow in the stack. b.

  • Page 27: Appendix A - Safety Equipment Description & Operation

    On actuation, the manual reset excess temperature limit interlock will open the control circuit to the main heat. In electrically heated furnaces the circuit is opened to the heating element contactors (or SCR power controller) and separate contactors. On gas heated equipment, the control circuit is opened to the control and safety valves.
  • Page 28 When there is no pressure differential, the air flow switch opens and turns off the control circuit to the main heat. In electrically heated furnaces the circuit is opened to the heating element contactors (or SCR power controller) and separate contactors.
  • Page 29 On actuation, the heat chamber manual reset excess temperature limit interlock will open the control circuit to the main heat. In electrically 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 safety valves.

  • Page 30: Appendix B - References

    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...
  • Page 31 APPENDIX C - MINIMUM PERIODIC INSPECTION REPORT Model: _________________________________________________ Serial No.: _________________ Inspected By: ___________________________________________ Date: _________________ BEFORE APPLYING POWER CHECK THAT: 1. ____ No changes in process have been made including types of materials processed and temperature: -Furnace originally designed for: _______________________________________________ _________________________________________________________________________ _________________________________________________________________________ -Furnace being used for: _____________________________________________________...
  • Page 32 26. ____ Inspect heating elements for contamination, distortion and adequate support. 27. ____ Check electrical connection at heating element terminals for tightness. FUEL GAS FURNACES 28. ____ Check pilot safety shutoff valves for leakage. (See Appendix D for details.) 29. ____ Check main safety shutoff valves for leakage. (See Appendix D for details.) 30.
  • Page 33 Make sure excess temperature limit interlock shuts down heat by opening main contactor (or SCR power controller) and separate contactors on electric furnaces and closes all gas valves on gas furnace. 47 ____ Excess temperature limit interlock is set no higher than 50°F above maximum operating temperature of furnace.

  • Page 34: Appendix D - Safety Shut Off Valve Leak Test Procedure

    12 APPENDIX D - SAFETY SHUT OFF VALVE LEAK TEST PROCEDURE FIRST PILOT SHUT OFF VALVE (1PSOV) Make sure all gas cocks ahead of equipment are open to allow gas flow to equipment and turn off electrical power to the control panel to assure that there is no power to the pilot shut off solenoid valves so that they are closed (1PSOV &...
  • Page 35 SECOND PILOT SHUT OFF VALVE (2PSOV) Make sure all gas cocks ahead of equipment are open to allow gas flow to equipment and power is provided to the control panel. Turn on the Exhauster but do not turn HEAT switch to start to assure that there is no power to the pilot shut off solenoid valves so that they are closed (1PSOV &...

  • Page 36: Appendix E - Warranty And Limitations Of Remedies

    In order 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 warranty ceases to be effective if the equipment...

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