Welch Allyn 53 Service Manual page 23

Functional Verification
Warning If the error code C03 does not appear, characterize NIBP according
to the instructions presented on
characterization test.
Do not use the monitor if it does not pass the NIBP characterization test. If the
NIBP module is not properly characterized, the monitor could overinflate a
neonatal cuff, which could create a hazard for neonatal patients.
If you cannot characterize the NIBP module, remove the monitor from service
immediately and return it to Welch Allyn for service. (See
on page 12.)
7. Put the monitor in Service mode as follows:
a. Power the monitor off.
b. Power the monitor on while pressing
Verification
1. Attach a #1 neonatal cuff and hose to the monitor. Wrap the cuff securely around a solid
cylindrical object of circumference between 1.6 and 1.9 inches (4.1 and 4.8 cm).
2. Press repeatedly until NIBP TEST appears on the LCD and 0 is displayed on the SYS
and DIA LEDs.
When you first enter the NIBP test mode, give the monitor about a minute to
initialize NIBP before you change the target test pressure.
When switching from one target pressure to the next, give the monitor time to
fully inflate and stop before you select the next target pressure.
In the NIBP test mode, press
pressure. The target pressure is displayed on the DIA LEDs. The measured
instantaneous pressure determined by the monitor is displayed on the SYS
LEDs.
3. Press once to select 80 mmHg (10.7 kPa). The cuff inflates to approximately 115 mmHg
(15.3 kPa).
In the NIBP test mode, and especially at small test volumes, the pressure
achieved can vary significantly (30-40 mmHg or 4-5.3 kPa) from the target
pressure.
4. Wait 15 seconds, and note the current pressure.
Vital Signs Monitor Series 300
page 41, and then repeat the NIBP
.
repeatedly to select the target NIBP test
23
Functional Verification Procedure
Returning Products
Service Manual