GE HEALTHCARE
DIRECTION 2286865, REVISION 14 LOGIQ™ 7 SERVICE MANUAL
Section 10-7 - Electrical Safety Tests 10-27
10-7-9-4 Meter Procedure Using Dale Meter to Measure Leakage Current (cont’d)
11.)Keep a record of the results with other hard copies of Planned Maintenance data.
CAUTION
Power off
Equipment damage possibility. Never switch the Polarity or the status of the Neutral when the
Ultrasound unit is powered on.
Power off the Ultrasound unit, allow the stored energy to bleed down, and turn the circuit
breaker off BEFORE switching the POLARITY switch and/or the NEUTRAL switch on the leakage
meter to avoid possible power supply damage.
Table 10-25 Typical Data Sheet For Probe Source Leakage Current
Probe Tested:
Unit Power
Tester Power Polarity
Switch
Tester NEUTRAL
Switch
Tester GROUND
Switch
Measurement
Start with System Powered OFF
OFF NORMAL OPEN CLOSED
OFF NORMAL OPEN OPEN
OFF NORMAL CLOSED CLOSED
OFF NORMAL CLOSED OPEN
Open Neutral first, then attempt Power ON
ON NORMAL OPEN CLOSED
ON NORMAL OPEN OPEN
Close Neutral. Power System ON, and wait until Probe under test is active, before continuing
ON NORMAL CLOSED CLOSED
ON NORMAL CLOSED OPEN
Power System OFF using the Shutdown pop-up.
Turn OFF System Circuit Breaker at rear of System or unplug from Meter outlet.
Switch Tester Power Polarity switch to Reversed, then turn System Breaker ON or plug power
cord into Meter outlet.
OFF REVERSED OPEN CLOSED
OFF REVERSED OPEN OPEN
OFF REVERSED CLOSED CLOSED
OFF REVERSED CLOSED OPEN
Open Neutral first, then attempt Power ON
ON REVERSED OPEN CLOSED
ON REVERSED OPEN OPEN
Close Neutral. Power System ON, and wait until Probe under test is active, before continuing
ON REVERSED CLOSED CLOSED
ON REVERSED CLOSED OPEN
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