Ferrite Microwave Technologies (FMT) magnetron tubes for 915MHz microwave systems are available for 75 kW and 100 kW power levels. Typically, magnetron tubes wear out and need replacing for approximately every 2,000 to 8,000 hours of operation. Due to their varying lifespan, which mostly depends on use, we offer brand new magnetrons and rebuilt tubes.
Magnetron tubes are critical components in your microwave system. As such, we make sure to individually tune them and protect the magnetron with our very own industry-leading high-power circulators. You can trust in the microwave system spare parts and service team at Ferrite Microwave Technologies to ensure a long life for your magnetron.
Magnetron Tube: Rebuilds
In addition to new magnetron tubes, FMT uniquely offers tube rebuilds for magnetrons that need servicing. For rebuilt tubes, we require that magnetrons meet a matching number of viable cores. A valid core is defined as follows:
- Anode vane damage is present
- Anode water flow is below minimum GPM rate
- The dome / output ceramic is intact and not damaged
- Input ceramic / RF choke sub-assembly is intact and not damaged from arc events
- Output and Input seal rings do not have to be replaced due to excessive amount of previous repairs
- Input and/or output anode straps do not have to be replaced due to failure modes pertaining to pi-1 mode and/or high reflected power
As always, if you are unsure about magnetron tubes meeting the following cores or not, please contact our spare parts, service, and support team.
How To Replace Magnetron Tubes
Although we recommend hiring a FMT certified technician for serious maintenance, we believe replacing magnetron tubes is fairly straightforward. If your facilities maintance team is comfortable doing it themselves, we highly recommend speaking with our team first to ensure you meet all proper safety precautions. If the installed system you’re working on is FMT, then, chances are you’ve already received formal training on this procedure.
Follow these steps to replace your magnetron tubes:
- Turn of ALL power (remember to floowing your facilities’ lockout procedure).
- De-energize any stored charges in circuit.
- Remove the filament connectors.
- Pinch off the water lines.
- Remove the three mounting nuts.
- Disconnect the water lines.
- Lift the magnetron tube up by the upper pull piece (do NOT touch the white parts of the magnetron!).
- Remove the upper pull piece.
- Install it on your new magnetron.
And then, reverse the process:
- Reinstall the upper pull piece on the new magnetron.
- Replace the new magnetron.
- Replace the mounting hardware.
- Reconnect the water lines.
- Reconect the filament connectors.
And there you have it, your new magnetron tube is installed.
Please feel free to reach out to our support team to review these steps, or to discuss your magnetron tubes efficiency.
To learn more, please contact our support team. We look forward to hearing from you!