Radical-7R Pulse CO-Oximeter Operator’s Manual
6-1
6
T r o u b l e s h o o t i n g
T r o u b l e s h o o t i n g
The following chart describes what to do if the Radical-7R Pulse CO-Oximeter system
does not operate properly or fails.
PROBLEM
POSSIBLE
CAUSE(S)
RECOMMENDATION
INSTRUMENT DOES
NOT POWER ON
One or both of the fuses
are not operating properly.
Replace the fuses.
INSTRUMENT POWERS
ON BUT THE GRAPHIC
DISPLAY IS BLANK
The viewing contrast is
not correct.
Instrument requires service.
CONTINUOUS SPEAKER
TONE
Internal failure.
Instrument requires service. Press the
Alarm Silence button to silence the
alarm. If alarm continues to sound,
power down instrument and remove
Handheld battery if necessary.
BUTTONS DON’T WORK
WHEN PRESSED
Internal failure.
Instrument requires service.
DEFECTIVE SENSOR
MESSAGE
Sensor or cable is broken.
Visually check the sensor LED if it is
flashing on and off.
If not, reconnect the cable and check
the LED again.
If the LED still fails to come on,
replace the sensor and/or cable.
SpO
2
NUMBER FLASHES
Saturation alarm limit
exceeded.
Assess/address patient condition.
Re-set alarm limits if indicated.
SENSOR OFF MESSAGE
Sensor not connected to
patient properly.
Sensor is damaged.
Properly reapply the sensor on the
patient and reconnect the sensor to
the instrument or patient cable.
If the sensor is damaged, replace the sensor.
NO SENSOR MESSAGE
Sensor is disconnected
from patient cable.
Sensor connected upside
down into patient cable.
Check to see if the sensor LED is
flashing. Disconnect and reconnect
the sensor. If the LED fails to operate,
replace the sensor.
LOW PERFUSION
Improper sensor type.
Poorly perfused site.
Sensor is too tight.
A disorder such
as hypothermia,
vasoconstriction,
hypovolemia, peripheral
vascular disease or anemia.
Sensor is damaged.
Verify proper sensor and sensor size
for the patient.
Check and see if blood flow to the site
is restricted. Be sure that the sensor
is not on too tight.
Set instrument to MAX sensitivity.
Warm the patient or sensor site.
Move sensor to better perfused site.
