Covidien Nellcor GR101704, Service Manual

Page: 134 / 236

Modification and Testing
10-12 Service Manual

Note:
When observing or changing alarm limits, a time-out is in effect (approximately ten
seconds). If no action is taken within the time-out, the monitoring system
automatically returns to the monitoring display.
Testing Alarm Limits
To test upper and lower SpO
2
and Pulse Rate limits
These tests ensure SpO
2
and pulse rate limits extend to either extreme of pos-
sible alarm thresholds.
1.
Turn on the monitoring system by pressing the POWER ON key.
2.
Press MENU.
3.
Select ALARM LIMITS.
4.
Test SpO
2
Upper and Lower Alarm Limits.
a.
Select SpO
2
.
b.
Select the SpO
2
Upper Alarm Limit, which should be set at a value of 100.
c.
Slide the bar down to a value of 86, using arrow keys as necessary.
d.
Press SAVE CHANGES.
e.
Repeat steps two through four to view SpO
2
Upper and Lower Alarm Limits.
f.
Select SpO
2
.
g.
Ensure the selected number for SpO
2
Upper Alarm Limit is set at a value of 86.
h.
Slide the bar down until it will not slide any further. Ensure the selected
number for SpO
2
Upper Alarm Limit decreases to a value of 21.
i.
Press SAVE CHANGES.
j.
Repeat steps two through four to view SpO
2
Upper and Lower Alarm Limits.
k.
Select SpO
2
.
l.
Ensure the selected number for SpO
2
Upper Alarm Limit is set at a value of 21.
m.
Press SAVE CHANGES.
n.
Repeat steps two through four to view SpO
2
Upper and Lower Alarm Limits.
o.
Select SpO
2
.
p.
Select the SpO
2
Lower Alarm Limit, which should be set at a value of 20, since
the lower threshold must remain at least one point below the upper threshold.