GE Dash Responder, Инструкции по обслуживанию

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GE Medical Systems
Information Technologies
Servicing Manual Dash Responder V1.0 Revision F
Page 62 of 72 2004768-001
Patient (Sink) Leakage Current Test
(Mains Voltage on the Applied Part)
This procedure only applies to Class I (grounded/earthed) equipment, and measures the leakage current
from a mains voltage source into each of the paddles.
The measurement should be made with a patient monitor connected to the defibrillator. Only in cases
where the defibrillator is used stand-alone the measurement can be performed with a service tool box
connected to the defibrillator. In this case the leakage current has to be measured at the ground plug of
the service box. Disconnect the service tool box from all other connections (e.g. PC, power supply
etc.).
W
ARNING
The following step will cause high voltage (120 VAC to 240 VAC) to appear at the PATN JACK on
the leakage tester. Do not touch the PATN JACK posts or paddle lead clips during this test as an
electrical shock will occur.
Referring to the electrical diagram, measurements have to be done under the following conditions:
•
Polarity switch NORM and RVS
•
GND switch GND closed
•
If the Service Tool box is used, the GND plug of the service tools box has to be connected to the
GND plug on the leakage tester
1. Read leakage current indicated on DMM.
If the reading is greater than the appropriate specification below, the device under test fails this test and
should be repaired and tested again.
•
100 µA (0.05 volts on the DMM) at 120 – 240 VAC with external paddle electrodes.
•
50 µA (0.05 volts on the DMM) at 120 – 240 VAC with internal paddle electrodes.
N
OTE
The 50 µA limit is according to ANSI/AAMI DF2. The leakage current is measured from each paddle.
2. Change the leakage tester polarity switch to the RVS position.
3. Read the leakage current indicated on the DMM. If the reading is greater than the appropriate
specification below, the device under test fails this test and should be repaired and tested again.
•
100 µA (0.05 volts on the DMM) at 120 – 240 VAC with external paddle electrodes.
•
50 µA (0.05 volts on the DMM) at 120 – 240 VAC with internal paddle electrodes.
N
OTE
The 50 µA limit is according to ANSI/AAMI DF2. The leakage current is measured from each paddle.