Electrical Safety Tests - GE Vivid E9 Service Manual

GE
D GB091046, R
IRECTION
Section 10-6

Electrical Safety Tests

ENERGY CONTROL AND POWER LOCKOUT FOR VIVID E9 / VIVID E7.
WARNING WARNING
WHEN SERVICING PARTS OF THE SYSTEM WHERE THERE IS EXPOSURE TO
VOLTAGE GREATER THAN 30 VOLTS:
1. FOLLOW LOCK OUT/TAG OUT PROCEDURES.
TAG
&
LOCKOUT
2. TURN OFF THE BREAKER.
Signed Date
3. UNPLUG THE VIVID E9 / VIVID E7.
4. MAINTAIN CONTROL OF THE POWER PLUG.
5. WAIT FOR AT LEAST 20 SECONDS FOR CAPACITORS TO DISCHARGE, AS THERE ARE NO TEST POINTS TO
VERIFY ISOLATION. THE AMBER LIGHT ON THE OP PANEL ON/OFF BUTTON WILL TURN OFF.
BEWARE THAT THE MAIN POWER SUPPLY AND BACK END PROCESSOR MAY BE ENERGIZED EVEN IF THE POWER
IS TURNED OFF WHEN THE CORD IS STILL PLUGGED INTO THE AC OUTLET.
10-6-1 Safety Test Overview
ENERGY CONTROL AND POWER LOCKOUT FOR VIVID E9 / VIVID E7.
WARNING WARNING
WHEN SERVICING PARTS OF THE SYSTEM WHERE THERE IS EXPOSURE TO
VOLTAGE GREATER THAN 30 VOLTS:
1. FOLLOW LOCK OUT/TAG OUT PROCEDURES.
TAG
&
LOCKOUT
2. TURN OFF THE BREAKER.
Signed Date
3. UNPLUG THE VIVID E9 / VIVID E7.
4. MAINTAIN CONTROL OF THE POWER PLUG.
5. WAIT FOR AT LEAST 20 SECONDS FOR CAPACITORS TO DISCHARGE, AS THERE ARE NO TEST POINTS TO
VERIFY ISOLATION. THE AMBER LIGHT ON THE OP PANEL ON/OFF BUTTON WILL TURN OFF.
BEWARE THAT THE MAIN POWER SUPPLY AND BACK END PROCESSOR MAY BE ENERGIZED EVEN IF THE POWER
IS TURNED OFF WHEN THE CORD IS STILL PLUGGED INTO THE AC OUTLET.
The electrical safety tests in this section are based on NFPA 99 Standard for Health Care Facilities
and IEC 62353 Medical electrical equipment – Recurrent test and test after repair of medical
electrical equipment. These standards provide guidance on evaluating electrical safety of medical
devices which are placed into service and are intended for use in planned maintenance (PM) or testing
following service or repair activities. They differ somewhat from the standards that are used for design
verification and manufacturing tests (e.g., IEC 60601-1 and UL 60601-1) which require a controlled test
environment and can place unnecessary stress on the VIVID E9 / VIVID E7.
These tests may refer to specific safety analyzer equipment as an example. Always refer to the safety
analyzer's user manual that will be used to perform the tests.
Prior to initiating any electrical test, the VIVID E9 / VIVID E7 must be visually inspected. Perform the
following visual checks:
• Check for missing or loose enclosure covers that could allow access to internal live parts.
• Examine the mains cord, mains plug and appliance inlet for damaged insulation and adequacy of
strain relief and cable clamps.
• Locate and examine all associated transducers. Inspect the cables and strain relief at each end.
Inspect the transducer enclosure and lens for cracks, holes and similar defects.
Equipment users must ensure that safety inspections are performed whenever damage is
suspected and at least every 12 months in accordance with local authorities and facility
procedures. Do not use the VIVID E9 / VIVID E7 or individual probes which fail any portion of the
safety test.
10 - 14
2
EVISION
Section 10-6 - Electrical Safety Tests
VIVID E9 / VIVID E7 BT'13 S M
ERVICE ANUAL