Periodic Safety Check
Setup, T
e
st
s, and Adjustment
s
Force EZ-C Series Service Manual
6-17
Checking the Bipolar Output
1.
Verify that the generator successfully completes the self-test as described in
Testing the Generator
in this section.
2.
Connect the test equipment for bipolar output.
a.
Connect the two test cables to the Bipolar Instrument receptacle.
b.
Pass one test cable through the current transformer and connect the current
transformer to the voltmeter.
c.
Connect the appropriate power resistor (refer to the table below) across the
output receptacle at the end of the test cables.
d.
Connect the bipolar footswitch to the Bipolar Footswitch receptacle on the
rear panel.
3.
Set the bipolar power to 70.
4.
Test the output current for the bipolar mode.
a.
Press the footswitch pedal and, while activating the generator, note the
output on the voltmeter.
b.
Release the footswitch pedal.
c.
Based on the voltmeter setting and the current transformer you are using,
calculate and record the output current.
d.
Verify that the generator output is within the range specified in the table
below.
5.
Repeat steps 2 through 4 for each resistor.
If the output is outside the specified range, calibrate the generator as described
in
Calibrating the Force EZ-C Series Electrosurgical Generator
in this
section. Then repeat this procedure. If the output remains outside the specified
range, call the Valleylab Service Center.
Generator Output (A
rms
)
Resistor
Bipolar Mode
(bipolar power @ 70 watts)
10 ohm
1.300-1.558
100 ohm
0.771-0.897
750 ohm
0.233-0.271
