Revision:1.0(2023-01-12)
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9.4 Electrical Safety Maintenance
The following electrical safety tests are considered as a part of the comprehensive regular
maintenance process and major means to detect exceptions. If the test is not performed, the
patient or operator may be endangered. Perform additional tests based on the actual conditions.
All tests can be performed by using a commercial safety analysis tester. The following tests are
performed by using the 601 pro series safety tester or an equivalent. Other mainstream testers
such as Fluke, Metro, and Gerb must comply with the requirements of IEC 60601-1. Follow the
instructions of the analyzer vendor and make adjustments as required during the test.
After the product is maintained or upgraded, test the product periodically by using a safety
analyzer to ensure that the product remains in the inspected state. The safety analyzer is
considered as a good troubleshooting tool in checking abnormal line voltage, grounding, and total
current load.
Electrical Safety Inspection
1-Power cord plug
Test process
• Power plug
Power plug pins
No damage or bent pins, and no discolored (rusty) pins
Plug No physical damage
Molded part No physical damage or plug heating during use
Power plug No loosening
• Power cable
Power cable No physical damage or aging
Check the connection for devices with detachable power
cables
Check the molded part for devices with undetachable
power cables
Electrical Safety Inspection
2-Device shell and accessories
Test process
• Visual inspection
Shell and accessories No physical damage to the shell and accessories
No physical damage to switches, connectors, and
dashboard
No overflowing liquid residues, such as water, coffee, and
chemicals
No physical damage to the probe, such as cracks or
swelling on the probe head
Diagnostic Ultrasound System
Service Manual
9 Appendix
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