Service manual

Ultraview 1030/1050 Monitors — Service Manual
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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.
Normal Condition — Condition in which all means provided for protection are intact. Includes
ground connections, insulation, creepage, and clearance distances.
Single Fault Condition — Open ground, open neutral, line voltage on a patient connection, or
any single state other than normal condition that could compromise patient safety.
UUT — Unit Under Test
Spacelabs Medical does not endorse standards to the exclusion of others. BE SURE TO CHECK
YOUR LOCAL REQUIREMENTS TO ENSURE YOUR EQUIPMENT SAFETY TESTS COMPLY
WITH LOCAL STANDARDS. Generally accepted standards for medical monitoring equipment,
such as the Underwriters Laboratory (UL) and the National Fire Protection Association (NFPA)
standards, are summarized in Table 1 below.
Equipment Required: Electrical Safety Analyzer, Fluke model 232D or equivalent
These tests should be performed according to the hospital’s scheduling requirements, at least
annually or after repair or modification.
Note:
All tests must be performed according to the safety analyzer’s operations manual, and any
local requirements.
Table 1: Summary of Standards for Medical Monitoring Equipment
International Mains to
Chassis Leakage
US (120 V) Mains to
Chassis Leakage
Mains Resistance
100 μA - normal condition,
ground attached (AC connector
to chassis)
300 μA - normal condition,
ground attached (AC connector
to chassis)
500 milliohms*
500 μA - single fault condition,
open ground or reverse polarity
300 μA - single fault condition,
open ground or reverse polarity
500 milliohms*
* Measured from the AC Power cord third wire ground to the most distant ground
attachment.