Philips M8031B, Service Manual

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4 Testing and Maintenance Safety Testing
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The expected test result is pass: the monitor boots up and displays the startup screen.
Safety Testing
Safety tests are comprised of the following tests performed on the monitoring system:
• protective earth resistance
• equipment leakage current
Safety test requirements are set according to international standards, their national deviations and
specific local requirements. The safety tests detailed in this Service Guide are derived from international
standards but may not be sufficient to meet local requirements. We recommend that you file the results of
safety tests. This may help to identify a problem early particularly if the test results deteriorate over a period
of time.
Each individual piece of equipment of the monitoring system which has its own connection to
mains or
which can be connected or disconnected from mains without the use of a tool must be tested individually.
Warnings, Cautions and Safety Precautions
• These tests are well established procedures of detecting abnormalities that, if undetected, could result
in danger to either the patient or the operator.
• Disconnect the device under test from the patient before performing safety tests.
• Disconnect the device under test from mains before performing safety tests. If this is not possible,
ensure that the performance of these tests does not result in danger to the safety analyzer operator,
patients or other individuals.
• Test equipment (for example, a Safety Analyzer) is required to perform the safety tests. Please refer to
Annex C of IEC/EN 62353 for exact requirements for the measurement equipment and for
measurement circuits for protective earth resistance and leakage currents.Refer to the
documentation that accompanies the test equipment. Only certified technicians should perform
safety testing.
• The consistent use of a Safety Analyzer as a routine step in closing a repair or upgrade is emphasized
as a mandatory step to maintain user and patient safety. You can also use the Safety Analyzer as a
troubleshooting tool to detect abnormalities of line voltage and grounding plus total current loads.
• During safety testing, mains voltage and electrical currents are applied to the device under test.
Ensure that there are no open electrical conductive parts during the performance of these tests.
Avoid that users, patients or other individuals come into contact with touch voltage.
• For Europe and Asia/Pacific, the monitor complies with:
IEC60601-1:1988 + A1:1991 + A2:1995 = EN60601-1:1990 +A1:1993 + A2:1995
IEC60601-1-1:2000
For USA, the monitor complies with:
UL60601-1
For Canada, CAN/CSA C22.2#601.1-M90
• Local regulations supersede the testing requirements listed in this chapter.
• If a non-medical electrical device is connected to a medical electrical device, the resulting medical
electrical system must comply with IEC/EN 60601-1-1.
• Perform safety tests as described on the following pages.