Related Manuals for Grieve NTR-800
Summarization of Contents
Shipping Damage and Handling
Visible Loss or Damage
Procedures for reporting visible loss or damage noted at delivery.
Concealed Loss or Damage
Procedures for reporting concealed loss or damage discovered after unpacking.
Returning Damaged Equipment
Guidelines for returning damaged equipment to the factory.
Handling
Instructions for storing and handling equipment after inspection.
Proper Oven Application
General Application Guidelines
Guidance on using ovens for their intended applications and avoiding misuse.
Flammable Solvents Precautions
Warnings and precautions regarding the use of flammable solvents with ovens.
Combustible Material Handling
Guidelines for handling combustible materials and fire protection systems.
Personnel Hazards
Information on hazards associated with operating ovens, including heat and electrical risks.
Maintenance and Inspection Importance
Importance of regular inspection and maintenance of safety devices and oven components.
Retroactivity and Code Compliance
User responsibility for updating equipment to comply with future code changes.
Installation
Location Selection Criteria
Criteria for selecting a safe and appropriate location for oven installation.
Building Considerations
Factors to consider regarding building structure, fire safety, and personal injury during installation.
Clearances
Requirements for maintaining adequate space around the oven for access and safety.
Ventilation Requirements
Requirements for proper ventilation to prevent hazardous vapor accumulation.
Exhaust Ductwork Installation
Guidelines for installing exhaust ductwork, including material and fire protection.
Thermometer Installation
Instructions for installing an optional dial thermometer.
Electrical Installation Guidelines
Guidelines for electrical connections, supply sizing, grounding, and safety.
Prior to Placing the Oven in Service
Pre-Operation Checks and Procedures
Comprehensive checklist of tasks to perform before operating the oven.
Processing
Unattended Operation Warning
Emphasizes the need for constant supervision during operation to prevent hazards.
Loading and Sensor Precautions
Precautions for handling temperature sensors and ensuring proper air movement.
Oven Loading and Air Circulation
Guidance on oven loading, airflow, and avoiding dead spots.
Operation and Power Control
Instructions for operating the on-off switch and controlling power.
Setting Operating Temperature
How to set the operating temperature using the controller.
Emergency Shutdown Procedures
Steps for performing an emergency shutdown of the oven.
Safety Equipment
General Safety Principles
Emphasizes human error, operator training, and not bypassing safety devices.
Non-Adjustable Excess Temp Limit Interlock
Details on the non-adjustable excess temperature limit interlock for NB/DR models.
Adjustable Excess Temp Limit Interlock
Details on the adjustable excess temperature limit interlock for NT/NTR models.
Maintenance
Preventative Maintenance Program
Recommendations for developing a preventative maintenance program and reviewing standards.
Safety Device Maintenance
Importance of regular inspection and maintenance of safety devices.
Servicing Safety Precautions
Safety procedures for disconnecting power before servicing equipment.
Application and Modification Responsibility
User responsibility for ensuring oven process and modifications meet original design.
Electrical Maintenance
Recommended electrical maintenance tasks, including tightening terminals and inspecting relays.
Oven Body Maintenance
Maintenance for the oven body, including cleaning and avoiding ignition sources.
Duct Work Cleaning
Importance of keeping oven ducts clean to prevent fires from combustible deposits.
Motor Lubrication
Lubrication requirements for electric motors based on operating hours or time.
Door and Gasket Inspection
Inspection of doors, latches, and gaskets for proper sealing and damage.
Fan Maintenance
Maintenance for fans, including tightening set screws and cleaning fan wheels.
Contactor Notes
Notes on contactor operation for temperature controllers and limit interlocks.
Temperature Control Verification
Procedures for checking temperature controller calibration and excess temperature limit interlocks.
Location Hazard Assessment
User responsibility to assess location for hazardous conditions and nearby flammable materials.
Trouble Shooting
Troubleshooting No Heat
Troubleshooting steps for issues related to the oven not heating, including limit interlocks and elements.
Troubleshooting Reduced Oven Temperature
Troubleshooting steps for reduced or incorrect oven temperatures, such as exhaust, door leakage, and fan issues.
Defective Thermocouple Diagnosis
Diagnosing issues related to defective or damaged thermocouples used for sensing.
Improper Line Voltage Issues
Identifying problems caused by improper line voltage or excessive voltage drop.
Appendix A - References
Factory Mutual Engineering Corporation
Contact information and specifications for Factory Mutual.
National Fire Protection Association
Contact information and list of relevant NFPA standards for ovens and safety.
Appendix B - Minimum Periodic Bench Oven Inspection Report
Pre-Power Inspection Checks
Items to check before applying power, including process and electrical checks.
Oven Interior and Component Inspection
Inspection and cleaning of oven interior, heat chamber, ductwork, and door components.
Mechanical and Lubrication Checks
Maintenance tasks for drip pans, fans, motors, and door latches.
Post-Power Checks
Checks to perform after applying power, focusing on voltage and contactor operation.
Temperature Control System Checks
Procedures for verifying temperature controller and excess temperature limit interlock function.
Location and Fire Safety Checks
Verifying location safety, proximity to hazards, and fire suppression systems.
Training Review
Reviewing operator and supervisor training on job functions and emergency shutdown.
Appendix C - Replacement Parts List
NB-350 Model Parts
Replacement parts list for the NB-350 model.
NB-550 Model Parts
Replacement parts list for the NB-550 model.
DR-350 Model Parts
Replacement parts list for the DR-350 model.
NB and DR Common Parts
Common replacement parts for NB and DR models, including motors and switches.
NT/NTR-800 Model Parts
Replacement parts list for the NT/NTR-800 models.
NT/NTR-1000 Model Parts
Replacement parts list for the NT/NTR-1000 models.
NTR Only Specific Parts
Specific replacement parts for NTR models, including motors.
NT/NTR Common Parts
Common replacement parts for NT/NTR models, including heating elements and gaskets.
Appendix D - Warranty and Limitations of Remedies
Warranty and Remedy Limitations
Details the warranty period, disclaims claims, and exclusive remedies for equipment defects.
Inspection Record Form
A form for recording oven model and power supply details during inspection.
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