GE Vivid 7 Service Manual

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 10 - Care & Maintenance 10 - 13
10-7-2GEHC Leakage Current Limits
The following limits are summarized for NFPA 99/UL2601-1/UL60601-1 (for USA) and IEC 60601-1 
Medical Equipment Safety Standards. These limits  are GEHC standards and in some cases are lower 
than the above standards listed.
 
 
NOTE: *Mains Applied refers  to the sink leakage test where mains (supply) voltage is applied to the 
part to determine the am ount...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
10 - 14 Section 10-6 - Using a Phantom
10-7-3 Outlet Test - Wiring  Arrangement - USA & Canada
Test all outlets in the area for proper grounding and  wiring arrangement by plugging in the neon outlet 
tester and noting the combination  of lights that are illuminated. Any problems found should be reported 
to the hospital immediately and the receptacle should not be used.
NOTE: No outlet tester can detect the condition where the...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 10 - Care & Maintenance 10 - 15
10-7-4-1 Meter Procedure Follow these steps to test the ground wire resistance.
1.) Turn the Vivid 7 unit OFF.
2.) Plug the unit into the meter, and the  meter into the tested AC wall outlet.
3.) Plug the black chassis cable in to the meters “CHASSIS” connecto r and attach the black chassis 
cable clamp to an exposed metal part of the Vivid 7 unit.
4.) Set the meters “FUNCTION” swit ch to the...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
10 - 16 Section 10-6 - Using a Phantom
10-7-5 Chassis Leakage Current Test
10-7-5-1 Definition This test measures the current t hat would flow in a grounded person who touched accessible metal 
parts of the bedside station if the ground wire shoul d break. The test verifies the isolation of the power 
line from the chassis. The meter is connected from  accessible metal parts of the case to ground. 
Measurements should be made wi th...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 10 - Care & Maintenance 10 - 17
10-7-5-2      Generic Procedure (cont’d)
.
8.) Keep a record of the results with other  hard copies of PM data kept on site.
10-7-5-3 Data Sheet for Chassis Source Leakage Current The test passes when all readings measure less than the value shown in  Table 10-12. Record all data 
on the PM Inspection Certificate.
10-7-6Isolated Patient Lead (Source) Leakage–Lead to Ground
10-7-6-1 Definition...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
10 - 18 Section 10-6 - Using a Phantom
10-7-6-2 Generic Procedure Measurements should be made with the ground open and closed, with power line polarity normal and 
reversed, and with the unit Off and  On. For each combination, the operating controls such as the lead 
switch should be operated to find the worst case condition.
 
10-7-7 Isolated Patient Lead  (Source) Leakage–Lead to Lead
Reference the procedure in the IEC 60601-1....

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 10 - Care & Maintenance 10 - 19
10-7-8 Isolated Patient Lead (S ink) Leakage-Isolation Test
Reference the procedure in the IEC 60601-1. When using the Dale 600, switch the meter’s function 
selector to the LEAD-ISO. Select the ALL position on  the lead selector. Depress the rocker switch to 
ISO TEST to test lead isolation.
NOTE: It is not necessary to test each lead individua lly or power condition combinations as required...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
10 - 20 Section 10-6 - Using a Phantom
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 10-18   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 FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 10 - Care & Maintenance 10 - 21
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.
10-7-9-2 Generic Procedure Measurements should be made with the ground open and closed, with power line polarity normal and 
reversed, and with the unit Off...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
10 - 22 Section 10-6 - Using a Phantom
10-7-9-3 No Meter Probe Adapter Procedure Follow these steps to test each transducer for leakage current.
1.) Turn the Vivid 7 unit OFF.
2.) Plug the unit into the test meter, and  the meter into the tested AC wall outlet.
3.) Plug the external probe into the meters “EXTERNAL” connector.
4.) Set the meters “FUNCTION”  switch to EXTERNAL position.
5.) Connect the probe for test with the...