Ohmeda 3000 - Page 18

3/Setup and Checkout Procedure
Elapsed Timer Check
1. Press the start/hold switch to activate the
elapsed timer. Verify that the timer starts opera-
tion.
2. Press the on/off switch for the Apgar tones. Ver-
ify that the indicator light for the Apgar tones is
not lit.
3. Press the on/off switch for the Apgar tones
again. Verify that the indicator light for the
Apgar tones is lit.
4. Press the start/hold touch switch. Verify that the
present elapsed time is held.
5. Press the start/hold touch switch and verify that
the timer updates to the current elapsed time
and the Apgar tones continue to sound at the
specified times (at 1 minute and at every 5 min-
ute interval after the elapsed timer is started).
6. Press the reset touch switch and verify that the
timer indicates 00:00. If the elapsed timer is not
used for one minute the display is switched off.
Examination Light Check
1. Press the Light “On"/“Off" touch switch. Verify
that the examination light functions.
Interlock Switch Check
1. Place the warmer in the manual mode at 25%
power output.
2. Rotate the heater assembly to the X-ray position.
Verify that the heater off indicator light is “On”
and the % power display indicates 0% heat.
3. Rotate the heater assembly to the normal operat-
ing position. Verify that the heater off indicator
light is “Off” and the % power display indicates
25%.
Display and Alarm Check
1. Press and hold the alarm silence switch for more
than 2 seconds, then check for the following:
a. Every segment of each digital display should be
lit. All segments should be of uniform brightness
and visible under ordinary room lighting condi-
tions.
b. All LED indicators should be lit.
c. The warbling two-tone audio alarm should be on.
Battery Test and Memory Test
The battery is charged in normal operation by a
trickle charge current from the regulated 9 volt sup-
ply. If the battery is discharged it must be re-
charged before allowing a patient to occupy the In-
fant Warmer. The battery may be recharged by
placing the unit in the manual mode at a 0% heat
setting. If the battery is defective, replace it. Re-
placement of the battery is recommended every two
years. There is no maintenance required for the bat- :
tery.
3-2
Note: The battery must be fully charged to pass the
10 minute test or partially charged to pass the two
minute test.
1. Disconnect the patient temperature probe.
2. Place the Infant Warmer in “servo” mode.
3. Silence the probe failure alarm.
4. Set the control temperature at 37.0 degrees C.
5
. Remove the Infant Warmer power plug from the
power source for two minutes. Do not switch the
power "Off". The power failure alarm should
sound for two minutes.
Note: If the power failure alarm is tested for 10
minutes, the Infant Warmer must be connected
to the correct power source and operated for 24
hours to recharge the battery before allowing a
patient to occupy the Infant Warmer.
6. Reconnect the Infant Warmer to the power
source. Verify the following:
a. The Infant Warmer is operating in the servo
mode.
b. The control temperature is 37.0 degrees C.
c. The audio power failure alarm is off.
Calibration Check
1. Press and hold the hidden control panel switch
(directly above the alarm silence switch).
2. After 2 seconds the displays should indicate as
follows:
a. Patient Temperature displays 25.0 + 0.1 degree.
b. Control Temperature displays 37.9 + 0.1 degree.
c. Elapsed Time displays % nominal line voltage +
2%.
Note: Line voltage may be measured on terminals
marked with the phase symbol and “n” on the
power supply board. Measure the voltage with the
heat off. The % of line voltage can be calculated by:
(Measured Voltage / Nominal Voltage) x 100 = % of
Nominal Line Voltage
Nameplate Voltage - Nominal Voltage
100 95
120 115
220
220
240 240