Service manual

Ultraview 1030/1050 Monitors — Service Manual
4-9
Maintenance
6 Attach the O
2
sensor to the O
2
cable. Verify that the O
2
numeric zone appears and displays
between 5% and 35% O
2
.
7 With the O
2
sensor in room air, touch the ROOM O2 SPAN key. Verify that the
ROOM O2 SPAN COMPLETE message is displays. Verify that the O
2
reads 21% ±2%.
8 Place the O
2
sensor in an O
2
airway adapter. Connect this to a source of 100% oxygen.
9 Touch the GAS, CAL, and then the O2 CAL keys on the monitor. Watch for the O
2
reading to
rise to a value between 85% and 100% and then stabilize. Wait at least 30 seconds.
10 If the value does not reach 85%, check for a weak O
2
sensor. Otherwise, touch the
100% O2 SPAN key.
11 Verify that the 100% O2 SPAN COMPLETE message is displayed. Verify that the O
2
reads
100% ±2%.
12 Shut off the 100% oxygen supply and disconnect the O
2
sensor and airway adapter from the
source of 100% oxygen.
13 Connect a 5% to 10% CO
2
, 21% O
2
, balance N
2
gas cylinder to a flow meter and then to the
CO
2
airway adapter (refer to Figure 4-2).
Figure 4-2: Capnography performance test configuration
14 Turn ON the gas supply and verify that the flow through the airway adapter is
300 to 500 ml/min.
15 Allow the reading to stabilize for 15 seconds. Touch the GAS, CAL, and CO2 CHECK keys.
While stabilizing, touch the NEXT READING key to read the CO
2
value. Touch the NEXT
READING key repeatedly until the value of XX.X in the CO2 XX.X mmHg key stabilizes.
16 Convert the certified contents of the test gas to mmHg using the following formula:
17 CO
2
in mmHg = (CO
2
in Percent from the bottle/100) × (Current barometric reading; the
XXX from the BAR. PRESS. XXX mmHg key)
18 Verify that the displayed value for CO
2
in the CO2 XX.X mmHg key is within 4 mmHg.
19 Shut off the CO
2
gas supply and disconnect the CO
2
sensor and airway adapter from the
source of the gas.
gas cylinder
flowmeter
airway
adapter
option-G
CO
2
or
option-H