Replacement Of Magnetron; Handling Of Magnetron Under Long-Time Storage - JRC JMR-5406-X Instruction Manual

NKE-2255-HS X band radar
*When the estimated replacement time arrives, a message urging the replacement will be displayed.
15.5.2

Replacement of magnetron

When replacing magnetrons, make sure to shut off the main power and let the
equipment stand for more than 5 minutes to discharge the high-voltage circuit.
Failure may result in electric shock.
Make sure to take off your watch when your hand must get close to the
magnetron.
Failure may result in damage to the watch since the magnetron is a strong
magnet.
Memo
Replacement of magnetron must be made by a specialized service personnel.
For details, refer to Service Manual.
Use necessarily the parts to meet the part types in the above shown in the table.
Do not touch the magnet of the magnetron with a screwdriver or put the magnetron on an iron plate.
When replacing the magnetron, connect the lead wire correctly.

15.5.2.1 Handling of magnetron under long-time storage

The magnetron that has been kept in storage for a long time may cause sparks and operate unstably
when its operation is started. Perform the aging in the following procedures:
Warm up the cathode for a longer time than usually. (20 to 30 minutes in the standby
state.)
Start the operation from the short pulse range and shift it gradually to the longer pulse ranges.
If the operation becomes unstable during this process, return it to the "Standby" state immediately.
Keep the state for 5 to 10 minutes and then repeat this procedure.
Magnetron 4,000 hours
Motor 10,000 hours
FAN for power unit 20,000 hours
FAN for 20,000 hours
transmission unit
15-21
CMG347
7BDRD0045A
7BFRD0010
7BFRD0011
Section 15 Maintenance & Inspection
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