IVAC® Volumetric Pump (Models 571 & 572)
33/104
1000SM00018 Issue 2
Routine Maintenance
Downstream Pressure Occlusion Test
Rate Accuracy Verification
(continued)
Procedure:
1. Set the pump to Primary rate =
800
ml/h, VTBI =
OFF,
TOT VOL INF =
000.0
(or, if not using a flow sensor, set the pump
to Primary rate =
800
ml/h, VTBI =
100
ml, TOT VOL INF =
000.0
).
2. With the pump displaying
START PRIMARY
or
ON HOLD PRIMARY
, press the
RUN/HOLD
switch to start the pump
and simultaneously start the stopwatch. Allow the pump to run for 180 seconds (3 minutes) ± 0.5 seconds then press
the
RUN/HOLD
switch to put the pump on hold.
3. Measure the volume in the burette and calculate the percentage of volume error using following formula:
4. If the % volume error is ± 2% or less, the pump is within the correct specification. If not, repeat the test.
If the pump fails a second time, perform the 'Rate Accuracy Calibration' procedure. See Chapter 2 for instructions.
Formula to calculate the percentage of volume error
% volume error =
b - n
x 100
n
Where:
b = volume in burette
n = nominal volume as indicated on the
characterised set
Procedure:
1. Connect an IV infusion set to a fluid container. Prime the set to ensure that air is completely
expelled.
2. Verify and, if necessary, adjust the
DEFAULT
pressure setting (test
015
) and the
MAXIMUM
(test
014
) occlusion pressure setting to
500
mmHg.
3. Connect a fluid pressure gauge to the luer end of the set.
4. Turn the pump
ON
and set the pump to VTBI =
100
ml, Primary rate =
499
ml/h.
5. Connect the pump to the pressure gauge by closing the three-way stopcock. Start the pump
and allow it to run until it alarms
DOWNSTREAM PRESSURE EXCEEDED
.
6. Verify that the pressure gauge reads between 11.0 and 14.0 psi.
7. Open the stopcock to relieve the pressure.
If the pump fails to alarm as stated, perform the 'Dry Set Pressure Calibration' procedure.
See Chapter 2 for instructions.
Reservoir
Fluid
Pressure
Gauge
Three-way
Stockcock
(or a Clamp)
Summary of Contents for IVAC 571
Page 1: ...IVAC Variable Pressure Volumetric Pump Models 571 572 Technical Service Manual...
Page 37: ...Chapter 4 Troubleshooting In this chapter Introduction 38 Error Messages 38 General Faults 42...
Page 97: ...Appendix C Configured Options...
Page 99: ...Appendix D Disposal...
Page 101: ...Appendix E Service Contacts...
Page 103: ...Appendix F Document History...
