Covidien Force FX, Service Manual

Page: 140 / 246

Calibrating the Generator
5-32
Force FX Electrosurgical Generator C Service Manual
Verify that the Bipolar display shows calibration step number C5. The Cut and Coag
displays show the I (current) factor. If it is four or more digits, the most significant digits
appear in the Cut display.
Checking the Current Sense Gain for Bipolar Output
1.
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 10 Ω resistor across the output jacks at the end of the test cables.
d.
Connect the bipolar footswitch to the Bipolar Footswitch receptacle on the rear
panel.
2.
Check and adjust the I factor for bipolar output.
a.
Press the Med (Standard) button.
b.
Press the bipolar footswitch pedal and check the voltmeter for a reading
equivalent to 1790 ± 20 mA
rms
.
c.
Stop activation. Do one of the following:
• If the output current reading was too high, raise the I factor by pressing the
Coag up arrow (

) button.
• If the reading was too low, lower the I factor by pressing the Coag down
arrow (

) button.
Repeat this step until the voltmeter reading is within the stated range. The I factor for
the Precise and Macro modes is adjusted automatically.
3.
Disconnect the test cables from bipolar output.
Checking the Current Sense Gain for Monopolar Output
1.
Connect the test equipment for monopolar output.
a.
Connect one test cable to the left jack in the Monopolar 1/CEM Instrument
receptacle. Pass the test cable through the current transformer and connect the
current transformer to the voltmeter.
b.
Use a test cable to short the two pins on the Patient Return Electrode receptacle.
c.
Connect the second test cable from the voltmeter to both pins of the Patient
Return Electrode receptacle.
d.
Verify that the 10 Ω resistor is connected to the test cables through the current
transformer for monopolar output.
e.
Connect a monopolar footswitch to the Monopolar 1 Footswitch receptacle on
the rear panel.