Utah Medical Products FINESSE +, Service Manual

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Service Manual
33
Touch Currents
Using an electrical safety analyzer, measure the following conditions. Acceptable conditions are
listed in parentheses:
Ground lead intact

Pass Normal Polarity ______ (<100
µ
A)

Pass Reverse Polarity ______ (<100
µ
A)
Ground lead open

Pass Normal Polarity ______ (<100
µ
A)

Pass Reverse Polarity ______ (<100
µ
A)
Using the electrical safety analyzer, and following the analyzer's instructions, make the
appropriate connections for the following leakage currents. Measure the leakage currents without
activating the system. The active electrode is the only Applied Part subject to these
tests.
 Pass Patient Auxiliary Current _____ (<100
µ
A)

Pass Patient Leakage Current (PLC) _____ (<100
µ
A)
 Pass PLC Caused by Ext Voltage _____ (<5000
µ
A)
(aka Mains on Applied Part)
CQM Circuit Tests
Do not activate the system during these tests, as most ES analyzers are not designed to
withstand activation during CQM testing.
Following the instructions for the ES analyzer, perform the following measurements IN THE ORDER
LISTED, without disconnecting the CQM dispersive pad lead between steps. Set CQM tester (or
resistor substitution box if analyzer does not have CQM test capability) to 150
Ω.
Connect pad
plug to system and turn on main power switch.

Pass Verify error is active.

Pass CQM dispersive pad illuminates the CQM pad icon above the pad receptacle.

Pass Reduce resistance until error clears. 130
Ω
_____ (117
Ω
-143
Ω
)

Pass Reduce to 50
Ω
, then raise until error activates. 68
Ω
_____ (61
Ω
-75
Ω
)

Pass Reduce resistance until error activates. 10
Ω
_____ (5
Ω
-15
Ω
)
Other Error Checks

Pass Pressing both cut and coag switchpen buttons or footswitch pedals simultaneously
produces error and disables output

Pass Activation of coag mode into open circuit conditions does not produce error