Tag Archives: Transferred

A New Process for Getting a Refurbished Autoclave

autoclave

Rethink the Approach

Achieving sterility by using autoclaves is a difficult and sometimes delicate process. This delicacy of the process requires a significant investment in autoclave equipment, and maximizing the value of that initial investment is a great way to protect your facility’s assets. Refurbished autoclaves are a great way to maximize the lifetime value of investments in autoclaves.

In this article, we’ll define a new solution for refurbished autoclaves through a service we call Control Upgrades or Control Rebuilds. Deciding between these two methods is based on an inspection of the piping system (piping and valves) coupled with a discussion about autoclave performance issues.

In a significant percentage of situations where an autoclave is performing suboptimally, an aging control system has been at the root of the system. This fact is the focal point of our new approach to delivering a refurbished autoclave.

process options for refurbished autoclaves
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Refurbished Autoclaves vs.
Control Upgrades vs. Control Rebuilds

Traditional methods for refurbishing autoclaves typically involve the removal of an entire unit from the field for refurbishing at the manufacturer’s factory. You’re probably familiar with the process: remove an autoclave with performance issues from the lab, ship the unit to a manufacturer’s facility, complete the inspection process, make modifications, and then sell or reinstall the unit back into the laboratory. There are several problems with this method:

  • Significant downtime and cost: There is the potential for significant downtime and cost involved in shipping units from laboratory locations to the manufacturer’s factory.
  • Limited availability: If you’re purchasing a newly refurbished autoclave not originally from your facility, you are beholden to manufacturer availability. This availability can be limited with rapid changes in availability.
  • Facility disruption: removal and reinstallation of an existing autoclave can bring several days of disruption to a facility’s operations during both the removal and/or installation of the refurbished autoclave.

This is why we’ve developed Control Upgrades and Control Rebuilds as alternatives to a traditional refurbished autoclave. Simply put, these methods are a customer-proven process to refurbish an autoclave in the existing space. If an autoclave inspection determines that the piping system (piping and valves) has years of existing usable life left, we recommend a Control Upgrade to bring updated functionality, monitoring, and troubleshooting to the autoclave. If only the chamber and jacket have usable life, a Control Rebuild is recommended to refurbish the autoclave. Both of these methods are done onsite, minimizing downtime and costs associated with shipping, ensuring the availability of a refurbished autoclave, and minimizing disruption.

Can Control Upgrades and Rebuilds from Beta Star be completed only on Beta Star autoclaves?

No! We’ve completed control upgrades and rebuilds on a variety of manufacturers’ autoclaves.

Control Upgrade and Rebuild Process
(for In-Lab Refurbished Autoclaves)

Refurbished Autoclaves Require a Chamber with Structural Integrity

The first step in the refurbished autoclave consideration process is an evaluation of the chamber and jacket. These core components make up a significant percentage of a new autoclave investment. If they are not able to be a part of a refurbished autoclave, then investing in a new autoclave is more cost-efficient. The age of the autoclave chamber, current condition, and water quality are three of the main evaluation points.

Age of the Chamber

Evaluating the age of the chamber requires an understanding of one number: 15. As in, 15 years. That number, for most autoclave manufacturers and sizes, is the standard chamber warranty.

Now, refurbishing an autoclave will void most, if not all, chamber warranties from the original manufacturer. But, this number gives insight into the confidence in the durability of the chamber through 15 years.

Current Condition

During the chamber condition process, technicians conduct a thorough inspection to check for any early signs of chamber corrosion potentially caused by corrosive autoclave loads and water quality. In addition, chamber sealing needs to be confirmed to ensure the door and chamber mechanism function as they should. Lastly, any weld seams along the chamber will be carefully examined.

Water Quality

If any hints of corrosion are detected, water quality tests may need to be conducted. The presence of water impurities will reduce the expected lifespan of the chamber. Water quality tests may be required if rouge (staining of the chamber) or hints of corrosion are detected during inspection.

Evaluating the Piping System with the Control System

After the chamber, an inspection of the piping system (piping and valves) is conducted to determine the estimated remaining life expectancy. At this stage, the experience of the technician is vital. This evaluation is best completed with years of experience analyzing piping systems while learning the warning signs as end-of-usable life approaches.

At the end of this evaluation, the condition of the piping system determines whether the Control Upgrade (replacing only the control system) or Control Rebuild (replacing the control and piping systems) is the recommended method.

Control Upgrades/Rebuilds vs. New: Why Go with the In-Lab Refurbished Autoclave Route?

The first (and arguably most important) reason to consider refurbishment is that it is a cost-effective solution for facilities looking to upgrade their sterilization equipment. Depending on the inspection, refurbished autoclaves are available at a fraction of the cost of a new unit. By choosing a refurbished autoclave, facilities can save significant amounts of money that can be used for other critical operations.

Secondly, the Control Upgrade/Rebuild route minimizes facility disruption. Acquiring a new autoclave can be a time-consuming process that involves extensive planning, installation, and validation (depending on the lab). In contrast, the Control Upgrade can be completed in as little as three days, minimizing downtime and reducing the impact on facility operations. This approach is especially important for facilities that cannot afford to shut down for extended periods of time.

Thirdly, purchasing new autoclaves can create a significant amount of unnecessary waste. When a facility replaces an autoclave, unit components are recycled when possible, but the remainder of the unit ends up in a landfill. The analysis completed ensures the lifespan of the chamber, jacket, and piping systems are maximized. This approach is not only environmentally responsible but also financially sustainable, as it requires investment only for the components that are at their end of life.

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Autoclave Control System Upgrades

autoclave control system upgrades

Outdated Autoclave Control System?

As autoclaves age, their control system ages as well. Many components of the autoclave are correctly categorized as wear items, such as valves and gaskets. Consistent evaluation and replacement of these components extends autoclave longevity and prevents maintenance issues from accumulating. While not a high-wear item, the control system of an autoclave can quickly become obsolete as the speed of technological and hardware advancements increases. Control system obsolescence may not sound like a significant problem, but consider:

Troubleshooting Autoclave Control System Issues

Outdated board-based machines are complex, limiting diagnostic and troubleshooting. If the motherboard manufacturer no longer provides support or replacement parts, any issue can render the machine inoperable. Modern control systems provide flexible and easy troubleshooting options as insurance against extended downtime events.

System Updates Increase Functionality

Nearly all digital devices that exist today have annual or semi-annual updates, which deliver increased functionality and features. For autoclaves, these updates improve control, customization, and archiving of user login functionality, data storage, cycle parameters, and global parameters.

Control Upgrades vs. Rebuilds

Control Upgrades

When the chamber and mechanical systems are in good condition,
a control-only replacement is recommended.

Control Rebuilds

A complete control rebuild is recommended when the chamber is in
good condition but mechanical and control system components need
replacing. If the chamber is beyond usable life, a new autoclave is required.

What to Expect With a Control System Upgrade or Rebuild

Whether a control upgrade or rebuild is completed on your autoclave, value add features ensure you receive the assets and resources necessary to operate your autoclave control. Beta Star’s use of non-proprietary parts on new equipment extends to upgrades, which reduces supply chain issues and lifetime cost-of-ownership. Upgrading a control system provides contemporary, industry-standard software with optional Beta Connect capability. Included in each autoclave are:

  • Custom Drawings: provide guidance for continual maintenance of the autoclave. Each drawing package is customized to the upgrade with a P&ID, electrical drawings, and the pneumatic manifold drawing when applicable.
  • Operations Manuals: we equip customers with the tools to ensure proper use and functionality of upgraded autoclaves. Along with the Operators Manual and Maintenance Schedule, we include a custom P&ID and electrical schematics.
  • Testing Documentation: when requested by the customer, we turnover Site Acceptance Testing (SAT) Documentation with optional execution by Beta Star technicians.
  • Custom Fascia/Enclosure: with careful analysis of each facility, we incorporate custom fascia panels and enclosure systems into each project to give a professional look with cleanable surfaces.

Beta Star’s talented team can perform control system upgrades on nearly every autoclave, regardless of manufacturer. To read more about Control System Upgrades and Rebuilds, download the PDF here.

Autoclave Manufacturer: Door Gasket


How the machining process during the autoclave manufacturing impacts door gasket life.


For many who are in the process of considering an autoclave manufacturer, there is often little thought put to the actual manufacturing process. Instead, the focus is typically centered around the PLC control system, HMI, and service technicians. To be fair, these components of an autoclave purchase are important as the PLC and HMI operate as the brain of the autoclave with service technicians operating as the doctor whose task is to keep the autoclave running effectively and efficiently. However, one of the many components of the manufacturing process that must be considered is how machining the door gasket grooves, completed during the autoclave manufacturing process, impacts gasket longevity.

autoclave manufacturer completing gasket groove machining
Autoclave Manufacturing: Machining the Gasket Groove

In the manufacturing process, the gasket groove is cut into the door plate with a CNC machine with exact precision and tolerances measured in hundredths of an inch. The manufacturing process welds the ASME vessel (aka the autoclave chamber) to the door plate before the gasket groove(s) are cut into the door(s) plates. For small autoclaves, such as the 20” x 20” and 26” x 26” chamber sizes, nearly all autoclave manufacturers are capable of following the aforementioned process with machining centers that have the capability to cut door plates with those dimensions. For larger autoclaves, many manufacturers are not capable of following the same manufacturing process because of the limitations of their CNC machines. Instead, this part of the manufacturing process is reversed. The gasket groove is machined into the door plate first, and then the door plate is welded to the chamber.

Why does this matter in how I use my autoclave?

The reversal of the process opens the door gasket groove to subtle warping caused by welding the door plate to the autoclave chamber. As stated above, machining centers cut precise gasket grooves with tolerances down to hundredths of an inch. During the manufacturing process the accuracy of the gasket groove is one of, if not the biggest, predictor of gasket performance and longevity. With even subtle warping during the welding process, a pre-cut gasket groove can warp enough to cause faster degradation of the door gasket.

In the long-term, subtle yet additional degradation of the gasket caused by a slightly inaccurate gasket groove can cause premature gasket failure. Over the lifespan of an autoclave this would increase cost-of-ownership and create additional downtime events caused by gasket failure. Based on feedback from service technicians across the country, gasket life cycle can be cut by 50%. Costs could vary significantly depending on the size of the autoclave door, but the costs could equate to hundreds of dollars per year in unnecessary costs.

At Beta Star, machining centers are capable of machining all of the autoclave chamber sizes after door plate and chamber welding has been completed. This includes the largest chamber we’ve ever manufactured on a 64” wide x 92” height x 96” depth autoclave. By partnering with Beta Star, you can reduce gasket lifespan issues that come from manufacturing. 

autoclave door gasket inspection
Inspecting an Autoclave Door Gasket

More Autoclave Manufacturer Topics to Know

For more information about what to consider when selecting an autoclave manufacturer, visit the Autoclave Manufacturer post or any of the subtopics listed below: