Mindray DC-25, Руководство по обслуживанию

Страница: 198 / 213

A-8 ELECTRICAL SAFETY INSPECTION
ELECTRICAL SAFETY INSPECTION
5-
Earth Leakage Test
Figure 1 Earth leakage test
（
for illustration only
）

Failure
Check any short-circuits of the Y capacitor on power unit. Replace a new one if any
portion defective.
Check any broken of the Power Unit. Replace a new one if any portion defective.
Inspect mains wiring for bad crimps, poor connections, or damage.
Test the wall outlet; verify it is grounded and is free of other wiring abnormalities.
Notify the user or owner to correct any deviations. As a work around, check the other
outlets to see if they could be used instead.
Change another probe to confirm if the fail is caused by console.
Inspect mains wiring for bad crimps, poor connections, or damage.
If the leakage current measurement tests fail on a new unit and if situation can not be
corrected, submit a Safety Failure Report to document the system problem. Remove unit
from operation.
If all else fails, stop using and inform the Customer Service Engineer for analysis
and disposal.
LIMITS
For UL60601-1
： 300 μA Normal Condition
1000 μA Single Fault Condition
For IEC60601-1:
：
500 μA Normal Condition
1000 μA Single Fault Condition