Hobart Mixer Motor Upgrade: ML-38734 Replacement

For businesses relying on the robust performance of Hobart mixers, encountering discontinued parts can be a significant setback. Specifically, owners of AS-200 series mixers, including the popular A120 and A120T models, may find themselves in a predicament with the discontinuation of the ML-38734 and ML-38735 motors. However, there's good news for those looking to keep their essential kitchen workhorses operational. Hobart has provided a direct and effective replacement pathway, ensuring that these valuable pieces of equipment can continue to serve their purpose for years to come. This article delves into the specifics of replacing these legacy motors with a more modern, efficient Hobart alternative featuring an electronic start switch.

Understanding the Discontinuation of ML-38734 and ML-38735 Motors

The discontinuation of a specific part, especially a core component like a motor, is a common occurrence in the lifecycle of any machinery. For the Hobart A120 and A120T mixers, the ML-38734 and ML-38735 motors have reached this stage. This usually happens for several reasons: advancements in technology lead to more efficient or compact designs, raw materials become harder or more expensive to source, or manufacturing processes evolve. While it might initially seem like a hurdle, it often paves the way for an upgrade that brings modern benefits to older equipment. These particular motors were integral to the AS-200 series, powering the mixers through countless hours of rigorous use in demanding commercial environments. Their robust nature has been a hallmark of Hobart's reputation, but even the most reliable components eventually necessitate an evolution.

The Modern Solution: Hobart Motors with Electronic Start Switches

The good news is that Hobart has designed a direct replacement that not only fits but also enhances the performance of your AS-200 series mixer. The recommended replacement is a Hobart motor that incorporates an electronic start switch. This isn't just a like-for-like swap; it's an upgrade that brings several advantages to your mixer's operation. Unlike older mechanical or centrifugal start switches, an electronic start switch offers a smoother, more controlled start-up. This reduces mechanical stress on the motor and other drivetrain components, potentially extending the overall lifespan of your mixer. It also typically results in quieter operation and can be more energy-efficient, contributing to lower running costs over time. This technological leap ensures that your mixer benefits from modern engineering, providing reliable and efficient power for all your mixing needs.

Key Advantages of an Electronic Start Switch:

• Enhanced Durability: Reduced mechanical wear during start-up.
• Smoother Operation: Less vibration and strain on the mixer's internal components.
• Improved Efficiency: Optimised power delivery, potentially leading to lower energy consumption.
• Quieter Performance: Less noise during the critical start-up phase.
• Reliability: Electronic components often have fewer moving parts to wear out compared to mechanical switches.

Compatibility: Which Mixers Can Benefit?

The information provided clearly states that the discontinued ML-38734 and ML-38735 motors, found in the A120 and A120T models, can be replaced with the new Hobart motor featuring an electronic start switch. Furthermore, this replacement motor is also compatible with A200 brush-type motors. This broad compatibility within the AS-200 series ensures that a significant range of Hobart mixer owners can benefit from this essential upgrade. If you own an A120, A120T, or an A200 model with a brush-type motor, this modern replacement offers a viable and beneficial path forward, preventing your mixer from becoming obsolete due to parts unavailability. It's crucial to confirm your specific model and motor type before proceeding with any replacement to ensure perfect compatibility and optimal performance.

The Replacement Process: What to Expect

While the actual motor replacement process should ideally be carried out by a qualified technician, understanding the general steps involved can provide clarity and help you prepare. This is not a simple plug-and-play operation; it involves dealing with electrical components and heavy machinery. Safety is paramount, and all power must be disconnected before any work begins. The process typically involves:

1. Disconnection: Carefully disconnecting all electrical wiring and mounting bolts from the old motor.
2. Removal: Safely removing the heavy, old motor from the mixer chassis.
3. Installation: Positioning the new Hobart motor, aligning it correctly, and securing its mounting bolts.
4. Wiring: Reconnecting the electrical wiring, ensuring all connections are secure and correctly terminated according to the manufacturer's specifications. This is where the electronic start switch integration occurs.
5. Testing: Once installed, the mixer should be tested thoroughly to ensure the motor functions correctly, quietly, and efficiently through all speed settings.

Given the complexity and the electrical nature of the task, professional installation is highly recommended to ensure safety, proper function, and to maintain any existing warranties. Attempting a motor replacement without the necessary expertise can lead to further damage to the mixer or, more importantly, personal injury.

The Importance of Using Genuine Hobart Parts

When undertaking a critical repair such as a motor replacement, the temptation to opt for cheaper, non-genuine parts might arise. However, for a high-value piece of commercial equipment like a Hobart mixer, using genuine Hobart parts is not merely a recommendation; it's a necessity. Genuine parts are designed and manufactured to precise specifications, ensuring perfect fit, optimal performance, and long-term reliability. Non-genuine parts might initially seem to work, but they often lead to premature failure, inefficient operation, and can even void warranties. Furthermore, the compatibility of the new electronic start switch motor with your existing mixer components is guaranteed only with genuine Hobart parts, ensuring seamless integration and the consistent, high-quality output you expect from your equipment.

Extending Mixer Longevity Through Proactive Maintenance

While replacing a discontinued motor is a significant step towards extending your mixer's life, it's part of a broader strategy for mixer longevity. Regular and proactive maintenance is crucial for preventing future breakdowns and ensuring your equipment operates at peak efficiency. This includes:

• Regular Cleaning: Keep the mixer clean, especially around the motor and ventilation areas, to prevent dust and debris build-up that can lead to overheating.
• Lubrication Checks: Ensure all moving parts are adequately lubricated according to the manufacturer's guidelines.
• Inspection of Belts and Gears: Check for signs of wear, cracks, or looseness in belts and gears, replacing them as needed.
• Electrical System Checks: Periodically inspect cords, plugs, and switches for damage or wear.
• Avoiding Overload: Do not consistently overload the mixer beyond its rated capacity, as this puts undue strain on the motor and drivetrain.
• Professional Servicing: Schedule regular professional servicing to catch potential issues before they become major problems.

A well-maintained mixer not only performs better but also significantly reduces the likelihood of unexpected downtime, which can be costly in a commercial kitchen environment.

Troubleshooting Common Mixer Issues (Beyond the Motor)

Sometimes, what appears to be a motor problem might stem from other issues. Before concluding that your motor needs replacement, consider these common troubleshooting points:

• Power Supply Issues: Check if the mixer is properly plugged in, the circuit breaker hasn't tripped, and there's adequate power supply to the outlet.
• Control Panel Malfunctions: A faulty speed control switch or start/stop button can mimic motor failure.
• Overload Protection: Many commercial mixers have overload protection that automatically shuts them down if the motor is under too much strain. Allow the mixer to cool down and reduce the load.
• Attachment Issues: Ensure attachments are correctly fitted and not causing undue resistance.
• Gearbox Problems: Noises or lack of movement could indicate issues with the gearbox rather than the motor itself.

A systematic approach to troubleshooting can often save time and money by correctly identifying the root cause of the problem.

Comparative Table: Old vs. New Motor Characteristics

To further illustrate the benefits of the upgrade, here's a comparison of the characteristics of the discontinued motors versus the modern Hobart replacement:

Frequently Asked Questions (FAQs)

Q1: Can I really replace my old ML-38734 motor with a new Hobart electronic start switch motor?

Absolutely, yes. Hobart has designed the new motor with an electronic start switch specifically as a direct replacement for the discontinued ML-38734 and ML-38735 motors found in the A120 and A120T models of the AS-200 series mixers. It's a forward-compatible solution to keep your valuable equipment running.

Q2: What are the main benefits of this motor upgrade?

The primary benefits include enhanced durability due to reduced mechanical stress during start-up, smoother and quieter operation, and potentially improved energy efficiency. By upgrading, you're not just replacing a part; you're investing in the extended lifespan and optimised performance of your mixer.

Q3: Is the replacement process something I can do myself?

While some mechanically inclined individuals might consider it, it is strongly recommended that motor replacement for commercial mixers be performed by a qualified and experienced technician. This task involves working with heavy components and electrical systems, which can be dangerous if not handled correctly. Professional installation ensures safety, proper function, and adherence to manufacturer specifications.

Q4: Why were the ML-38734 and ML-38735 motors discontinued?

Motors like the ML-38734 and ML-38735 are typically discontinued due to advancements in motor technology, the evolution of manufacturing processes, or challenges in sourcing specific components for older designs. Manufacturers often introduce newer, more efficient, and sometimes more environmentally friendly designs, making older models obsolete.

Q5: How do I know if my A200 mixer has a brush-type motor?

If you own an A200 mixer, it's highly likely to have a brush-type motor if it's an older model. However, to be certain, it's best to consult your mixer's original manual or contact Hobart customer service with your mixer's serial number. They can provide definitive information on your specific model's motor type and confirm compatibility with the replacement.

Q6: What is an electronic start switch, and how does it differ from older types?

An electronic start switch is a modern control mechanism that manages the motor's initial power delivery. Unlike older mechanical or centrifugal switches that rely on physical contact and springs to engage the motor's starting winding, an electronic switch uses circuitry to precisely control the current, providing a much smoother and more controlled start-up. This reduces wear and tear on the motor and can contribute to quieter operation.

Q7: Can I use a non-Hobart motor as a replacement?

While it might be tempting to consider non-Hobart alternatives for cost reasons, it is strongly advised against. Non-genuine parts may not fit correctly, could lead to inefficient operation, and are unlikely to offer the same level of reliability and durability as genuine Hobart parts. Crucially, using non-Hobart components can also void any existing warranties and may compromise the safety of your equipment.

Conclusion

The discontinuation of the ML-38734 and ML-38735 motors for Hobart A120 and A120T mixers, and the A200 brush-type motors, is not the end of the line for your valuable equipment. Hobart has provided a clear, effective, and advantageous upgrade path with their modern motor featuring an electronic start switch. This replacement not only resolves the issue of parts obsolescence but also brings significant improvements in performance, efficiency, and longevity to your AS-200 series mixer. By opting for this genuine Hobart solution and ensuring professional installation, you can confidently extend the operational life of your mixer, maintaining productivity in your commercial kitchen for many years to come. Investing in the right replacement and committing to ongoing maintenance are key to unlocking the full potential and durability of your Hobart equipment.

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