GE Logiq 7 Service Manual

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
Section 10-7 - Electrical Safety Tests 10-23
10-7-8-1 Data Sheet for ECG Leakage Current
The test passes when all readings measure less than the value shown in the table below. Record all 
data on the PM Inspection Certificate.
Table 10-20 Maximum Allowance Limit for ECG Leakage Current
AC Power Source
Maximum
Allowance Limit
GROUND OPEN
GROUND  CLOSED
Patient Lead to Ground Leakage Current Test
and
Patient Lead to Lead Leakage Current...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
10-24Section 10-7 - Electrical Safety Tests
10-7-9 Probe Leakage Current Test
10-7-9-1 Definition
This test measures the current that would flow to ground from any of the probes through a patient who 
is being scanned and becomes grounded by touching some other grounded surface.
NOTE: Some leakage current is expected on each probe, depending on its design. Small variations in probe  leakage currents are normal from probe to probe. Other...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
Section 10-7 - Electrical Safety Tests 10-25
10-7-9-2 Test Equipment (cont’d)
. 
Table 10-24 Test Equipment and Accessory Description
Dale Part numberAccessory NamePictureDescription
Vendor MODEL 
600/100 
46-285647P2  CHASSIS CABLE
Black coil cord with extended length and black grips. Used on DALE601/601E to measure 
earth resistance and enclosure leakage current. Also used as 
reference lead for external  measurement. 
Vendor MODEL...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
10-26Section 10-7 - Electrical Safety Tests
10-7-9-3 Generic Procedure for Leakage Current
Measurements should be made with the ground open and closed, with power line mains polarity normal 
and reversed, and with the unit Off and On. For each combination, the probe must be active to find the 
worst case condition.
10-7-9-4 Meter Procedure Using Dale Meter to Measure Leakage Current The ultrasound probe’s imaging area is immersed in a...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 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 Po larity 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...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
10-28Section 10-7 - Electrical Safety Tests
10-7-9-5 Meter Procedure Using Probe Adapter to Measure Probe Isolation (Sink) Current
The Dale 600/600E provides a method for testing probes independently from the system. The meter 
utilizes a probe adapter to apply a test potential commonly to all connector pins. 
The ultrasound probe’s imaging area is immersed in a solution along with a grounding probe from the 
test meter to complete the...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
Section 10-7 - Electrical Safety Tests 10-29
10-7-9-5 Meter Procedure Using Probe Adapter to Measure Probe Isolation (Sink) Current  (cont’d)
8.) Test every probe and record in Table 10-26 the test results for every probe. The test passes when all readings measure less than the values in Table 10-30.
9.) Keep a record of the results with other hard copies of Planned Maintenance data.
. 
Table 10-26   Probes Tested for Isolation (Sink)...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
10-30Section 10-7 - Electrical Safety Tests
GE Healthcare Leakage Current Limits for LOGIQ™ 7
The following limits are summarized for NFPA 99 (For USA) and IEC 60601-1 Medical Equipment 
Safety Standards. Measurement limits per IEC 60601-1 Medical Equipment Safety Standards, Table IV. 
 
 
NOTE: *Measurement limits per IEC 60601-1 Medical Equipment Safety Standards, Table 19.5DV.1
**Most meters (like Dale 600/601) only measure AC (rms)....

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
Section 10-7 - Electrical Safety Tests 10-31
Section 10-1
When Theres Too Much Leakage Current...
CHASSIS FAILS
Check the ground on the power cord and plug for continuity. Ensure the ground is not broken, frayed, 
or intermittent. Replace any defective part.
Tighten all grounds. Ensure star washers are under all ground studs.
Inspect wiring for bad crimps, poor connections, or damage.
Test the wall outlet; verify it is grounded and is...

GE HEALTHCARE
DIRECTION 2286865, REVISION 14LOGIQ™ 7 SERVICE MANUAL
10-32Section 10-7 - Electrical Safety Tests
PM INSPECTION CERTIFICATE  
* Scan Format: Phased Array, Linear Array, Curved Array, Mechanical Array or Other
FUNCTIONAL CHECKS PHYSICAL INSPECTION AND CLEANING 
COMMENTS: 
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