Criticare Systems, Inc.
VitalCare
TM
506N3 Series
Service Manual
Page 5-21
Section 5 —Preventative Maintenance
SpO
2
Verification:
CSI DOX Only
NOTE:
This procedure is for models with the optional
DOX SpO
2
Oximeter.
1. Disconnect the DOX SpO
2
sensor from the unit after power up.
2. Verify a red LED lights up the sensor signal symbol on the front
of the membrane.
3. Using a SpO
2
finger sensor, verify heart rate and
plethysmograph operation displayed on the LED’s within 15
seconds. Verify no SpO
2
error messages appear (alarm
violations may occur depending on individual readings and
monitor set-up).
4. Verify the 10-segment green LED bar graph displays the relative
strength of the pulse by lighting a proportional number of LED
segments. Remove your finger from the sensor.
5. Verify
SPO2: SENSOR
message is displayed when the finger
sensor is plugged in, but with no finger inserted in the sensor.
6. Verify
SPO2: HIGH AMBIENT
message appears by introducing
a higher than normal amount of ambient light on the SpO
2
sensor detector.
7. Using an optical load to simulate a small signal (such as a foam
packing peanut), verify that the message
SPO2: LOST
appears
on the display.
8. Verify
SPO2: NO SENSOR
message is displayed when there is
nothing connected to the SpO
2
connector.
SpO
2
Verification:
Nellcor Only
NOTE:
This procedure is for models with the optional
Nellcor SpO
2
Oximeter.
1. Disconnect the OxiMax SpO
2
sensor from the unit after power
up.
2. Verify a red LED lights up the sensor symbol on the front
membrane.
3. Using a Nellcor SpO
2
finger sensor, verify heart rate and
plethysmograph operation displayed on the LED’s within 15
seconds. Verify no SpO
2
error messages appear (alarm
violations may occur depending on individual readings and
monitor set-up).
4. Verify the 10-segment green LED bar graph displays the relative
strength of the pulse by lighting a proportional number of LED
segments.
5. Verify
SPO2: PULSE LOST
message appears after the unit has
taken a reading, then removing your finger from the sensor.
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