Welch Allyn Propaq LT 802LT0N, Руководство по обслуживанию

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Service Manual Functional verification 61
NIBP
Characterization test
1. Attach a neonatal hose (008-0265-XX) to the monitor NIBP air connector.
2. Connect the test syringe, set to a volume of 35 ml, to the neonatal hose. (See “35-ml
test volume” on page 73.)
3. Set the monitor patient mode to Adult .
4. Start an NIBP reading.
5. Verify that the monitor displays the message “Equipment Alert/NIBP Fault/Kinked or
neonate hose”.
Leak rate test
1. Attach a #1 neonatal cuff and hose to the monitor.
2. Wrap the cuff securely around a solid cylinder of circumference between 1.6 and 1.9
inches (4.1 and 4.8 cm.).
3. Navigate to Service > NIBP > NIBP Test .
Note The syringe plunger must not move when pressure is applied to the syringe
cylinder.
WARNING If the message “Kinked or neonate hose” does not appear, remove
the monitor from service. Characterize NIBP ( “Characterize NIBP” on page 21)
and then repeat this Characterization Test. If the monitor cannot pass the
Characterization Test, return it immediately to an authorized Welch Allyn Service
Center.
WARNING Use of an uncharacterized monitor can result in overinflation of
neonatal cuffs. The monitor is characterized at the factory. If any change to the
NIBP components occurs, the monitor must be withheld from service until it has
been characterized again.
Note
If the time spent to run these tests is too long, the monitor times out and dumps
pressure.
Note
This test method uses a higher test pressure than required for compliance to
regulatory standards, because only one of the monitor choices for built-in test
pressures is equal to or greater than the maximum pressure required by
regulatory standards. It also uses a much smaller test volume than required.
Using this much more stringent test method assures not only that the monitor
meets the requirements of all regulatory standards but also verifies that the leak
rate of the monitor is sufficient for the monitor’s neonatal applications.
Note Four test pressures—0, 80, 150, and 300 mmHg—can be selected. The actual
instantaneous pressure achieved, as displayed in the lower left, can vary
significantly from the selected test pressure.
The variance is greatest for the smallest test volumes, where actual pressure
attained can be 10 to 20 mmHg greater than the nominal value of the test
pressure.