Visual Check - Dräger Medical Zeus Technical Documentation Manual

2.1.1 Class B
NOTE:
When testing a class B medical device, the device (test specimen) can be irreversibly damaged in
the case of an incorrect configuration of the tester with classes BF, CF and mains voltage at the
application part. Do not perform the "voltage at application part" test on class B devices.
2.1.2 Operating rooms
NOTE:
When performing tests in room with electrical isolation by means of isolating transformers and
isolation monitoring (IT networks in operating rooms), the test instruments must be configured
accordingly. Refer to the User Manual of the test instrument.
With "IT network" setting, the internal test in the test instrument "voltage at PE" is suppressed.
Non-compliance could lead to incorrect measurements.
2.1.3 Insulated set-up of medical devices
NOTE:
When testing the device or earth leakage currents it must be ensured that the devices are set up
such that they are insulated. A part of the leakage currents can discharge, for example, via
conductive floors.
Only a differential current measurement may be performed on devices that are not set up such
that they are insulated.
2.1.4 Same type of power cables and accessories
NOTE:
Make sure to use the same type of power cables and the same type of accessories when
performing repeat measurements. Otherwise, it could result in fluctuating measured values, in
particular with low leakage currents. Make sure that the power plug is inserted securely.
2.1.5 Measured value 0.0 microamperes
NOTE:
If a test results in a value of 0.0 microamperes, check whether it is due to a measurement error.
Most of the times it is caused by incorrect operation of the test instruments.
2.2

Visual check

Switch off the Zeus.
Pull the power plug.
Check the following parts for possible damage:
Mains connecting cable including cable-strain relief.
Auxiliary sockets
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On auxiliary sockets with automatic circuit-breakers, check the circuit-breakers are switched on.
The automatic circuit-breakers are switched on.
[OK]
The ratings of the fuse-links correspond to the imprint.
Zeus 2005-03 Released
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