Spacelabs qube 91390, Руководство по обслуживанию, Страница: 56 / 160

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Q U B E
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A I N T E N A N C E
Required Test Equipment
• Electrical Safety Analyzer — Dynatech Nevada 232C or
equivalent
• Patient Simulator — Dynatech Nevada 300B or equivalent
Notes:
• Before you test, make sure that the module housing or
housings and its DC power supply or supplies have their
associated cables attached, but are not interconnected.
• Make sure that the Ethernet cable and AC power sources are
removed.
• The AC line is auto detected; no user selection is necessary.
• Ensure that the leakage test equipment is calibrated.
Mechanical Inspection
Make sure that:
• The monitor and all optional equipment are clean.
• All screws are tight.
• The case and connector pins are not damaged.
• There are no frayed or pinched wires or cables.
Tests for Electrical Safety
To protect the patient from electrical shock, especially micro-shock,
do the required safety tests. It has been determined experimentally
that current values in the microampere (mA) range can cause fatal
arrhythmias in electrically susceptible patients. A patient is deemed
electrically susceptible when connected to monitoring equipment.
Definitions
Classification — IEC/EN/UL 60601-1 Safety standard designation for
the class of equipment and type of patient applied parts that
indicate the degree of protection provided against electrical shock.
Leakage Current — Current that is not functional. It includes patient
leakage, ground leakage, and enclosure (or chassis) leakage.
Patient Lead Leakage — Current that flows from the applied part of
the patient lead to ground.
Chassis Leakage — Current flowing from the enclosure (or from
conductive parts accessible to the operator) through the ground
conductor.