4-12 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Maintenance: Electrical Safety Tests
Patient-to-Ground Leakage for IUP/Toco
1. With the leakage tester connected to power, connect the monitor’s power cord
to the leakage tester.
2. Connect the transducer to the monitor.
3. Wrap the transducer in aluminum foil or immerse in normal saline solution.
4. Select the leakage tester’s settings to measure Lead-to-Ground leakage current
for all leads as appropriate.
5. Connect the leakage tester external clip lead/Probe and connect/immerse as
appropriate.
6. Verify and record the results for all conditions listed in Electrical Safety Report.
Patient-to-Line (ISO) Leakage for IUP/Toco
1. With the leakage tester connected to power, connect the monitor’s power cord
to the leakage tester.
2. Connect the transducer to the monitor.
3. Wrap the transducer in aluminum foil or immerse in normal saline solution.
4. Select the leakage tester’s settings to measure Lead-to-Line leakage current for
all leads as appropriate.
5. Connect the leakage tester external clip lead/Probe and connect/immerse as
appropriate.
6. Apply Line Voltage by pressing the appropriate leakage tester control.
7. Verify and record the results for all conditions listed in Electrical Safety section
of the Preventative Maintenance Report.
Patient-to-Ground Leakage for US1/US2
1. With the leakage tester connected to power, connect the monitor’s power cord
to the leakage tester.
2. Connect the transducer to the monitor.
3. Wrap the transducer in aluminum foil or immerse in normal saline solution.
4. Select the leakage tester’s settings to measure Lead-to-Ground leakage current
for all leads as appropriate.
5. Connect the leakage tester external clip lead/Probe and connect/immerse as
appropriate.
6. Verify and record the results for all conditions listed in Electrical Safety section
of the Preventative Maintenance Report.
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