Cautions For Testing Or Servicing - ConMed ExcaliburPLUS PC Service Manual

* The output power selected should be as low
as possible and activation times should be as
short as possible for the intended purpose.
* When uncertain of the proper control set-
ting for the power level in a given procedure,
start with a low setting and increase as
required and/or consult the manufacturer.
* Observe all caution and warning symbols
printed on the cover of the unit.
* The operating room staff should never con-
tact electrosurgical electrodes (either active or
dispersive) while the RF output of the unit is
energized.
* The tips of recently activated accessories
may be hot enough to burn the patient or
ignite surgical drapes or other flammable
material.
* Do not ignore unexpected activation tones.
Check to determine the cause of the tone, oth-
erwise injury can occur.
* Temporarily unused active electrodes should
be stored in an electrically insulated container.
The unused active electrode should never be
placed on the patient. This is especially impor-
tant for laparoscopic procedures.
1.1.4 CAUTIONS For Testing or Servicing
* Service should not be attempted without
reference to sections 3 and 4 of this manual.
* This electrosurgical unit should be tested by
qualified maintenance personnel on a periodic
basis to ensure proper and safe operation. It is
recommended that examination of the unit be
performed at least yearly.
* Refer all servicing to qualified personnel.
Your CONMED representative will be happy
to assist you in getting your equipment ser-
viced.
* High voltages are developed within the unit
that are accessible when the top cover is
removed. These voltages are potentially dan-
gerous and should be treated with extreme
caution.
a
* The high voltage DC power supply in the
Excalibur Plus PC™ is equipped with a bleed-
er resistor to dissipate the charge on the filter
capacitor. However, it takes several seconds
after power is removed to bleed that charge
down to a safe level; it is recommended that at
least thirty (30) seconds be allowed to elapse
before touching or attempting to perform any
maintenance involving the power supply or
power amplifier.
+ Never remove or install any parts with
power on.
* Avoid contact with the output leads when
the unit is activated. Periodically inspect the
test leads used for the output connections for
obvious defects.
* Although this unit will withstand momen-
tary short circuits on the output, prolonged
short circuits may damage the unit. Short cir-
cuiting the output should be avoided since it
is neither necessary nor desirable.
* Since the clinical use of electrosurgical units
is intermittent in nature with duty cycles on
the order of 10%, this unit is not designed to
operate for extended periods of continuous
output. When testing, it is recommended that
duty cycles be limited to 50% with maximum
activation times of 30 seconds.
* Life of the equipment will be extended by
minimizing operating temperature and
extreme thermal cycles.
* The heat dissipation capability of the heat
sink is impaired by activating the Excalibur
Plus PC™ in other than its normal operating
position.
¢ Ensure that the two top cover screws are
tightened, and always perform a power-up
check to confirm a normal power-up sequence
before returning the unit to service.