The SHI Cryogenics Group is the premier manufacturer of coldheads and compressors for a range of medical applications, including MRI, Pre-Clinical MRI, Proton Therapy and NMR.
We offer numerous service and support options for each of these industries. In particular, SHI works closely with all major MRI manufacturers, providing service and spare parts directly to end users.
As an Original Equipment Manufacturer (OEM), we have parts and services that no other firm can offer or match, including:
- Reliably long life on rebuilt products, typically two or three times longer than third-party competitors
- Products rebuilt using brand new parts – we don’t salvage parts from other units
- Technical support only the OEM can provide
- Coldheads and compressors with a one-year full warranty
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Our factory-trained technicians and service support members are located in strategic service centers around the globe and offer 24/7 on-call support.
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Product repairs and refurbishments performed at SHI Service Centers include:
- Flow check of all internal parts to ensure optimum refrigeration capacity
- Replacement of required wear items—seals, valve disc, valve stem, capillaries and displacers, when necessary
- Performance testing to factory specification
- Leak check, both pressurized and for vacuum integrity, where applicable
We also understand that there are cases where complete removal and return of the cryocooler is overly difficult. In response, SHI also offers “hot swap” service performed by SHI technicians.
What Is Hot Swap Service?
Hot Swap service allows for “in situ” maintenance, without the need to remove the complete cryocooler for return or replacement. Hot Swap service involves complete exchange of the cryocooler assembly, with the exception of the cylinder, which remains installed in the customer’s system. Hot Swap implies that the customer’s system is accessible, has any ancillary instrumentation removed in advance, and is warm, allowing for reliable removal and exchange.
Performing hot swap service lowers the total cost of ownership by:
- Eliminating the cost of shipping a complete cryocooler to a service center
- Eliminating labor costs associated with complete disassembly of the cryocooler from your system
- Minimizing the “down time” of your system for service or repair
- Minimizing the required capital investment in spare parts
Due to the unique operating environment of these cryocoolers, on-site service and maintenance by non-SHI technicians is not recommended at this time. SHI technicians can perform a limited amount of service on-site, including the cleaning and replacement of wear items, gas cleanup and additional tuning. However, the most reliable approach to service and maintenance on these cryocoolers is to return them to one of SHI’s service centers.
Product repairs and refurbishments performed at SHI Service Centers include:
- Replacement of required wear items—valve stem and filter unit, when necessary
- Cryogenic gas cleansing of all system components
- Performance testing to factory specification
- Leak check, both pressurized and for vacuum integrity, where applicable
CH and DE Series Cryocoolers can be serviced via hot swap, either on-site by the customer or by an SHI factory-trained technician, without removing the cryocooler for return or replacement. This unique service option is the result of high-quality, ultra-reliable Displex® Cryocooler technology. Displex Cryocoolers have a long and successful operating history, and feature a pneumatic drive that optimizes performance and reliability and permits quick and easy removal of the displacer assembly for maintenance.
In addition, these cryocoolers can be returned to one of SHI’s service centers. Product repairs and refurbishments performed at SHI Service Centers include:
- Flow check of all internal parts to ensure optimum refrigeration capacity
- Replacement of required wear items—seals, valve disc, valve stem, capillaries and displacers, when necessary
- Performance testing to factory specification
- Leak check, both pressurized and for vacuum integrity, where applicable
What Is Hot Swap Service?
Hot Swap service allows for “in situ” maintenance, without the need to remove the complete cryocooler for return or replacement. Hot Swap service involves complete exchange of the cryocooler assembly, with the exception of the cylinder, which remains installed in the customer’s system. Hot Swap implies that the customer’s system is accessible, has any ancillary instrumentation removed in advance, and is warm, allowing for reliable removal and exchange.
Performing hot swap service lowers the total cost of ownership by:
- Eliminating the cost of shipping a complete cryocooler to a service center
- Eliminating labor costs associated with complete disassembly of the cryocooler from your system
- Minimizing the “down time” of your system for service or repair
- Minimizing the required capital investment in spare parts
APD, Marathon and CP Series Cryopumps can be serviced via “hot swap” on-site by the customer or an SHI factory-trained technician, without breaking vacuum or removing the cryopump from the chamber for return or replacement. This unique service option is the result of the high-quality, ultra-reliable Displex® Cryocooler technology found in all APD, Marathon and CP Series Cryopumps. Displex Cryocoolers have a long and successful operating history, and feature a pneumatic drive that optimizes performance, reliability and maintainability.
In addition, these cryopumps can be returned to one of SHI’s service centers. Product repairs and refurbishments performed at SHI Service Centers include:
- Flow check of all internal parts to ensure optimum refrigeration capacity
- Replacement of required wear items—seals, valve disc, valve stem, capillaries and displacers, when necessary
- Performance testing to factory specification
- Leak check, both pressurized and for vacuum integrity, where applicable
- Replacement or repair of vacuum components—chevron, 1st stage cryopanel, 2nd stage charcoal arrays-when necessary
What Is Hot Swap Service?
Hot Swap service allows for “in situ” maintenance, without the need to remove the complete cryocooler for return or replacement. Hot Swap service involves complete exchange of the cryocooler assembly, with the exception of the cylinder, which remains installed in the customer’s system. Hot Swap implies that the customer’s system is accessible, has any ancillary instrumentation removed in advance, and is warm, allowing for reliable removal and exchange.
Performing hot swap service lowers the total cost of ownership by:
- Eliminating the cost of shipping a complete cryocooler to a service center
- Eliminating labor costs associated with complete disassembly of the cryocooler from your system
- Minimizing the “down time” of your system for service or repair
- Minimizing the required capital investment in spare parts
Many minor maintenance tasks, such as adsorber replacement and leak checking, can be performed on-site by the customer or by an SHI factory-trained technician. If returned to one of SHI’s service centers, product repairs and refurbishments include:
- Full diagnostic review—mechanical, electrical, flow displacement and moisture content
- Motor capsule replacement, if needed
- Heat exchanger replacement, if needed
- Adsorber replacement
- Cryogenic gas cleansing of all system components
- Leak testing
- Performance testing to factory specification