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ConMed ExcaliburPLUS PC - Periodic Performance Testing; Electrical Safety and Output Tests

ConMed ExcaliburPLUS PC
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4.4
PERIODIC
INSPECTION
The
Excalibur
Plus
PC™
should
be
visually
inspected
at
least
every
six
months.
This
inspec-
tion
should
include
checks
for:
*
Damage
to
the
power
cord
and
plug.
*
Tightness
of
the
power
plug.
*
Tightness
of
the
volume
control
knob.
*
Proper
mating
and
absence
of
damage
to
the
patient
connectors.
*
Obvious
external
or
internal
damage
to
the
unit.
+
Accumulation
of
lint
or
debris
within
the
unit
or
heatsink.
*
Control
Panel
cuts,
punctures
or
dents.
4.5
PERIODIC
PERFORMANCE
TESTING
The
Excalibur
Plus
PC"
should
be
performance
tested
at
least
every
year.
Every
unit
is
supplied
with
a
serialized
Production
Test
Data
Sheet
that
tabulates
the
results
of
the
factory
tests
that
were
performed
on
the
unit.
This
data
is
supplied
so
that
it
may
be
used
as
a
reference
for
subsequent
tests.
Recommended
periodic
performance
tests
are
listed
in
the
following
sections.
4.5.1
Chassis
Ground
Integrity
Equipment:
Volt-Ohmmeter,
Simpson
260
or
equivalent.
Procedure:
Connect
the
ohmmeter
between
the
earth
ground
prong
of
the
power
plug
and
the
exposed
screw
heads
on
the
bottom
of
the
Output
Panel,
and
the
Equipotential
Ground
Connection.
Confirm
less
than
0.2
ohm
resis-
tance.
4.5.2
Displays,
Alarms,
Commands
Preliminary
checks
of
the
items
listed
below
appear
in
Section
2.3.
*
Return
Fault
Alarm
+
Mode
Indicator
Lamps
*
Sound
Tones
and
Volume
Control
*
Hand
control/Forceps
Operation
*
Foot
switch
Operation
*
ASSIST
Resistance
Indicator
*
Return
Fault
Indicator
*
Power
Indicators
Equipment:
2
Hand
controls,
Single
and
Dual
Foil
Return
Electrodes,
Foot
switches,
Jumper
wire.
4.5.3
Output
Power
Equipment:
*
Monopolar
Footswitch
*
Bipolar
Footswitch
Preferred:
*
RF
true
rms
millivoltmeter
with
5
MHz
fre-
quency
response, current
probe
with
|
Khz
to
5
MHz
frequency
response
and:
300
ohm
250W
noninductive
resistor
(all
monopolar
modes
except
Spray),
500
ohm
250W
noninductive
resistor
(Spray),
50
ohm
50W
noninductive
resis-
tor
(Bipolar).
Alternate:
*
Commercial
ESU
Tester
with
50
ohm
for
bipo-
lar,
and
300
ohm
loads
for
monopolar.
Alternate:
*
Commercial
ESU
Tester
with
100
or
125
ohm
loads
for
bipolar,
and
400
or
500
ohm
loads
for
monopolar.
*
Return
Electrode
Adapter
Plug
(shorting).
*
Bovie
#12
Adapter
Plug
or
Hand
Control.
*
3
test
leads,
Im
max.
length
NOTE:
RF
power
measurements
are
difficult
to
achieve
with
accuracies
better
than
5%.
This
5%
error
in
reading
can
add
to
a
similar
5%
error
induced
by
instrumentation
error
during
calibra-
tion
and
result
in
an
error
due
to
instrumentation
alone
of
10%.
To
achieve
the
unit’s
rated
error
tolerance,
it’s
best
to
use the
same
instrumenta-
tion
to
calibrate
and
check
calibration.
Since
that
will
not
be
possible
on
new
units
already
cali-
brated,
allowance
should
be
made.
However,
out-
put
errors
of
less
than
20%
are
generally
not
clini-
cally
noticeable.
Note:
The
RE
output
power
level
checks
of
Table
4.
1
correct
for
the
load
regulation
characteristics
of
the
Excalibur
Plus
PC™.
This
results
in
output
current
levels
that
differ
from
the
power
setting
when
the
P=PR
calculation
is
done
at
other
than
the
rated
load.
Refer
to
the
Load
Regulation
4-7

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