Compliance West MegaPulse Defib-5PF-002, Instruction Manual

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7
Safety Techniques
The high voltage circuit of the MegaPulse Defib-5PF-002 can be shut off at any time by turning
OFF the rear power switch. Always press TRIGGER to discharge the tester before turning OFF.
The MegaPulse tester is provided with a digital VOLTAGE ADJUST knob on the front panel.
This should always be adjusted to the minimum position at the start of testing. In addition, this
knob should be adjusted back to the minimum position at the completion of all testing.
The MegaPulse tester is provided with a CHARGE switch that is in the unarmed "Standby"
setting when the tester is first turned ON. When the yellow CHARGE button is lit, the tester will
not provide high voltage until the CHARGE Button and the TRIGGER Button have been
pressed in order. To prevent inadvertent operation, the operator should be instructed not to press
the
CHARGE Button until the test is ready.
The MegaPulse tester has been designed for one-touch operation with the right hand. If possible,
it should be set up to the left and in front of the equipment under test. The equipment under test
should be connected to the MegaPulse tester and then left alone by the operator. After the
operator is clear of the Tester and the equipment under test, the operator should turn the rear-panel
power switch to ON, press the
CHARGE Button, adjust the voltage to the desired level (as
displayed on the front panel meter), then press the TRIGGER Button, with his right hand. This
will allow the greatest separation between the operator and the test being conducted. Note that the
CHARGE process will stop after 2 minutes if the TRIGGER button is not pressed.
The MegaPulse tester is designed to bleed the high voltage away after the test has concluded. In
order to ensure that any voltage present in the equipment being tested has been completely bled
away, the operator should not unplug the equipment under test from the MegaPulse until the front
panel meter reads a safe level (40 volts or less is generally considered a safe level). Pressing the
TRIGGER button before disconnecting main power (or turning the equipment off) will ensure that
the internal capacitors are discharged as much as possible.
Using the MegaPulse Impulse Tester
The impulse test involves high voltage and caution should be exercised when using the tester. The
RETURN lead is referenced to building ground when properly connected. However, both the
OUTPUT and RETURN leads must always be treated as Hazardous whenever the power switch
of the MegaPulse is in the ON position.
The MegaPulse impulse tester generates the impulse waveform only; it does not determine Passing
or Failing results. It is the operator’s responsibility to monitor the output waveform and determine
Passing or Failing results. In monitoring the impulse waveform, consider the following points:
The Impulse waveform is high voltage and high frequency (short duration). Always ensure that
the measuring instrument (usually an oscilloscope with a high-voltage probe) is rated for the
voltage involved, and that the frequency response of the instrument and probe are capable of
measuring the output waveform of the MegaPulse Impulse Tester. A measuring instrument or
probe with a low frequency response will result in erroneous readings that could be mis-read.