Description
Honeywell M9494F1003 Product Description
1. Product Overview
The Honeywell M9494F1003 is a high – performance Modutrol fire rate motor, specifically engineered to meet the exacting demands of flame safeguard applications within commercial and industrial oil or gas burner systems. This motor serves as a critical component in regulating the firing rate of burners, ensuring optimal combustion efficiency and safety. With its advanced design and reliable construction, it plays a pivotal role in maintaining the stability and performance of combustion processes. It is part of Honeywell’s renowned Modutrol series, which has a long-standing reputation for delivering precision and durability in industrial control applications.
2. Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | M9494F1003 |
| Manufacturer | Honeywell |
| Product Category | Modutrol Fire Rate Motor |
| Torque | 300 lb – in. (34 Nm) |
| Voltage | 24 VAC |
| Resistance | 135 ohm (proportional input) |
| Stroke Time (90 – degree) | 60 seconds |
| Stroke Time (160 – degree) | 107 seconds |
| Auxiliary Switches | 2 |
| Stroke Adjustability | Field – adjustable to 90 or 160 degrees |
| Operating Temperature Range | – 40 °F to 150 °F (- 40 °C to 66 °C) |
| Output Shaft | Double – ended, 3/8 in. square |
| Dimensions | 6.45 in high x 5.5 in wide x 7.3 in deep (164 mm high x 140 mm wide x 185 mm deep) |
| Weight | 4.40 lbs (2 kg) |
| Frequency | 50/60 Hz |
| Power Consumption | 15 W |
| Breakaway Torque | 600 lb – in. (68.0 Nm) |
| Insulation Class | Class B |
| Enclosure Type | NEMA 1 |
Honeywell M9494F1003
3. Product Introduction
The M9494F1003 features a compact and robust design that allows for easy integration into existing burner systems. Its reversing, proportional motor functionality enables precise control over the position of burner firing rate valves, dampers, or auxiliary equipment. The motor is regulated by a three – wire proportional controller, which provides seamless adjustment of the firing rate based on the system’s requirements, such as changes in heat demand.
The field – adjustable stroke of 90 or 160 degrees offers flexibility in different applications, allowing for customization to match the specific needs of the combustion system. For example, a 90 – degree stroke might be sufficient for smaller burners, while a 160 – degree stroke could be necessary for larger, more complex systems. The double – ended, 3/8 in. square output shaft provides a secure connection to the driven components, ensuring efficient power transfer and minimizing slippage during operation.
The motor’s Class B insulation ensures that it can withstand elevated temperatures without compromising its electrical integrity, adding to its durability in high – heat environments commonly found near burners. The NEMA 1 enclosure provides basic protection against dust and accidental contact, making it suitable for indoor, dry locations within control panels or machinery compartments.
4. Core Advantages and Technical Highlights
4.1 Precise Firing Rate Control
The M9494F1003 is engineered to offer highly precise control over the firing rate of burners. This precision is achieved through its proportional motor design, which responds accurately to small changes in the control signal. This level of control is crucial in maintaining optimal combustion efficiency, which in turn reduces fuel consumption and emissions. In commercial and industrial settings, where large – scale burners are used, accurate firing rate control ensures consistent heat output and reliable operation, preventing issues like overheating or underperformance.
4.2 Vibration – Resistant Design
The motor incorporates a vibration – resistant electronic drive circuit, making it suitable for use in environments with high levels of vibration. This is particularly important in industrial applications, where machinery and equipment such as pumps, fans, and other rotating components can generate significant vibrations. The vibration – resistant design helps to ensure the long – term reliability and performance of the motor, reducing the risk of premature failure due to loosened components or damaged internal wiring.
4.3 Wide Temperature Compatibility
With an operating temperature range of – 40 °F to 150 °F, the M9494F1003 can withstand extreme temperature conditions. This wide temperature compatibility makes it suitable for use in a variety of applications, from cold storage facilities where ambient temperatures are very low to high – temperature industrial processes near furnaces or boilers. It eliminates the need for additional temperature – control measures, such as heat shields or cooling fans, reducing installation and operating costs.
4.4 Adjustable Stroke
The field – adjustable stroke feature allows for customization of the motor’s operation to suit different burner configurations. Whether a 90 – degree or 160 – degree stroke is required, the M9494F1003 can be easily adjusted to meet the specific needs of the application using simple tools. This flexibility enhances the motor’s versatility and makes it suitable for a wide range of combustion systems, from small commercial boilers to large industrial furnaces.
4.5 Multiple Auxiliary Switches
The inclusion of two auxiliary switches provides additional functionality for the motor. These switches can be used to control other components in the burner system, such as safety interlocks, alarm systems, or additional control devices like pumps or fans. For example, one switch could activate a warning light when the motor reaches a certain position, while the other could shut down the system in case of a malfunction. The availability of auxiliary switches simplifies the overall system design and integration, reducing the need for external switching components and lowering installation complexity.
4.6 High Breakaway Torque
The motor’s high breakaway torque of 600 lb – in. (68.0 Nm) ensures that it can overcome initial resistance when starting to move, even if the connected valves or dampers are stiff or have accumulated debris. This is especially important in systems that may be idle for extended periods or operate in environments where components can become stuck due to dirt, corrosion, or temperature – related expansion. The high breakaway torque minimizes the risk of motor stall during startup, ensuring reliable operation.
5. Typical Application Scenarios
5.1 Commercial Boiler Systems
In commercial buildings, such as hotels, hospitals, and office complexes, large – scale boilers are used for heating and hot water supply. The M9494F1003 is used to control the firing rate of the boilers, ensuring efficient and stable operation. By precisely regulating the amount of fuel burned, it helps to maintain a consistent water temperature and optimize energy consumption, leading to cost savings for the building owner. For instance, during peak heating hours, the motor can increase the firing rate to meet higher demand, and during off – peak times, it can reduce the rate to conserve fuel.
5.2 Industrial Furnaces
Industrial furnaces, used in processes such as metal melting, heat treatment, and glass manufacturing, require precise control over the firing rate to ensure consistent product quality. The M9494F1003 is integrated into the furnace control systems to adjust the burner output based on the process requirements. For example, in metal heat treatment, the furnace must maintain a specific temperature to achieve the desired material properties. The motor can adjust the firing rate to keep the temperature within a tight range, minimizing product defects and improving production efficiency.
5.3 Power Generation Plants
In power generation plants that use oil or gas – fired boilers to generate electricity, the M9494F1003 plays a crucial role in maintaining the stability and efficiency of the combustion process. It controls the firing rate of the boilers, ensuring a consistent steam output for power generation. By optimizing the combustion process, it helps to reduce fuel consumption and emissions, contributing to the overall environmental sustainability of the power plant. Additionally, the motor’s ability to respond quickly to changes in load demand ensures that the plant can adapt to fluctuations in electricity usage.
5.4 Incineration Systems
Incineration systems, used to dispose of waste materials, rely on controlled combustion to ensure complete and efficient burning. The M9494F1003 can be used to adjust the firing rate of the incinerator’s burners, controlling the temperature and ensuring that waste is burned thoroughly. This helps to reduce harmful emissions and comply with environmental regulations. The motor’s wide temperature range and vibration resistance make it suitable for the harsh conditions in incineration facilities.
Honeywell M9494F1003
6. Installation, Commissioning and Maintenance Instructions
6.1 Installation Preparation
Select a suitable location for mounting the M9494F1003. Ensure that the location is free from excessive moisture, dust, and corrosive substances, as these can damage the motor’s components. The motor should be installed in an area that allows for easy access to the wiring connections and for maintenance purposes, with sufficient space for adjustments and inspections.
Check the integrity of the motor and all its components, including the housing, shaft, wiring, and auxiliary switches, before installation. Look for any signs of damage or wear, such as cracks, bent shafts, or frayed wires, that could affect its performance.
Prepare the wiring according to the specified gauge and length requirements. The wiring should be properly insulated to ensure safe and reliable operation, especially since the motor operates on 24 VAC, which requires protection against short circuits. Use wire connectors that are rated for the voltage and current of the motor.
Gather the necessary tools, such as wrenches, screwdrivers, wire strippers, and a multimeter, for the installation process. A multimeter can be used to verify voltage levels and check for continuity in the wiring.
6.2 Commissioning
Mount the M9494F1003 in the selected location using the appropriate mounting hardware, such as bolts or brackets. Ensure that the motor is securely fastened to prevent movement during operation, which could cause misalignment or damage to the output shaft and connected components.
Connect the power supply wires to the motor, following the wiring diagram provided in the product manual. Make sure the power supply voltage is within the specified 24 VAC range. Use a multimeter to confirm the voltage before powering on the motor to avoid damage.
Connect the control wires to the three – wire proportional controller, ensuring proper connection and insulation. Double – check the wiring to ensure that the control signal is correctly transmitted to the motor, as incorrect wiring can lead to erratic behavior or failure to respond.
Adjust the stroke of the motor to the desired angle (90 or 160 degrees) using the field – adjustable mechanism. Refer to the product manual for specific instructions on how to make this adjustment, as it may involve loosening set screws or adjusting a cam.
Test the motor by applying a control signal. Observe the movement of the output shaft to ensure that it operates smoothly and accurately, without hesitation or excessive noise. Check that the auxiliary switches activate at the correct positions, if applicable. Monitor the motor’s temperature during initial operation to ensure it does not overheat.
6.3 Maintenance
Regularly inspect the M9494F1003 for any signs of physical damage, such as cracks in the housing, loose fittings, or worn – out components. Pay particular attention to the output shaft and its connections, as these are subject to wear during operation. If any damage is detected, replace the affected components immediately to prevent further issues.
Clean the motor periodically to remove any dust or debris that may have accumulated, especially around the ventilation openings and auxiliary switches. Use a soft brush or a compressed air canister to gently clean the exterior; avoid using harsh chemicals or water, as these can damage the motor’s electrical components.
Check the wiring connections regularly for any signs of looseness or corrosion. Tighten any loose connections and replace any corroded wires or connectors as needed. Corroded connections can cause increased resistance, leading to voltage drops and reduced motor performance.
Lubricate the output shaft and any moving parts as recommended by the manufacturer. Use a high – temperature lubricant suitable for the motor’s operating environment to ensure smooth movement and prevent friction – related wear.
Monitor the performance of the motor over time. Check for any changes in the stroke time, torque, or power consumption using diagnostic tools or by comparing with initial commissioning data. If any abnormal behavior is observed, such as slow response, inconsistent movement, or unusual noises, follow the troubleshooting procedures provided in the product manual to identify and resolve the issue. Common issues may include a faulty control signal, worn – out gears, or a damaged drive circuit.
7. Service and Guarantee Commitment
Honeywell typically offers a 12 – month warranty for the M9494F1003, providing customers with assurance against manufacturing defects. The exact terms and duration of the warranty may vary depending on the region and the specific purchase agreement, so it is advisable to check with the supplier or Honeywell’s customer service for details. In case of any product failures within the warranty period, Honeywell’s technical support team is available to offer prompt assistance. They can help with troubleshooting over the phone or via email, and if required, arrange for the repair or replacement of the motor, subject to the terms and conditions of the warranty.
Customers can access comprehensive installation and operation manuals on Honeywell’s official website. These manuals provide detailed, step – by – step instructions for installation, commissioning, and maintenance of the M9494F1003, along with wiring diagrams and troubleshooting guides. Additionally, Honeywell may offer training programs or technical support services to help customers optimize the performance of the motor and ensure its proper integration into their systems. These services can be particularly valuable for technicians who are new to working with Modutrol motors or complex burner systems.
For customers requiring ongoing support beyond the warranty period, Honeywell offers a range of service contracts that can include regular maintenance, priority technical support, and access to replacement parts. This helps to ensure that the M9494F1003 continues to operate reliably throughout its service life, minimizing downtime and maximizing the efficiency of the combustion systems it controls.
