GE Brivo OEC 715, Service Manual

Page: 494 / 551

Periodic Maintenance
8-7
WARNING
8.4.5. Ground Continuity
Perform the ground continuity test described below.
Do not perform this continuity test with the AC plug connected to a power receptacle.
Connect the Interconnect Cable to the C-Arm and verify continuity between the following:
From To Spec
Workstation
The right-top screw of WorkStation back cover AC Power Plug Ground Pin
< 0.5
Ω
Any one of screws to fix Monitor AC Power Plug Ground Pin
< 0.5 Ω
Mainframe
Any one of screws on the tube cover AC Power Plug Ground Pin
< 0.5 Ω
Any one of screws to fix the Image Intensifier AC Power Plug Ground Pin
< 0.5
Ω
Metal surface of central C-arm.
Comments: Close to the zero mark of orbital. AC Power Plug Ground Pin
< 0.5 Ω
Metal surface of lock wrench of interconnector cable AC Power Plug Ground Pin
< 0.5 Ω
If there is special ground continuity regulation for in used system, FE shall follow local
regulation and perform the test by Ground Continuity test equipment.
Below is the special regulation for Ground Continuity:
The resistance measured from the ground pin on the power cord to any accessible
conductive surface in the system (e.g., the chasis) shall not exceed 0.3 Ohm per European
norm EN 62353, specification.
The resistance measured from the ground pin on the power cord to any accessible
conductive surface in the system (e.g., the chasis) shall not exceed 0.2 ohms per IEC
60601-1 or equivalent.
8.4.6. Facility Leakage Current Test Notification
The medical facility may require that the facility’s biomedical department or the 3
rd
service party to
perform current leakage test on the system before it is put into the service and during the periodic
maintenance. In that case, notify the service personnel of following warning:
Power off the system before and during any tests. Do not interrupt power to the system
at any time while the system is booting or shutting down to avoid file system corruption.
WARNING