Cardinal Health IVAC 571, Technical & Service Manual

Page: 17 / 104

IVAC® Volumetric Pump (Models 571 & 572) 17/104 1000SM00018 Issue 2
Configuration & Calibration
Calibration Procedures
Equipment required:

50ml syringe

Pressure gauge

"52" Series IV infusion set
Procedure:
1. Remove the battery cover from the pump to
allow access to the Accessory Interface Board.
See Chapter 6, 'Spare Parts Procedures' for
instructions.
2. Prepare a modified IV infusion set as follows:

Completely remove the clear membrane
cover from the white pressure sensing disc.
Ensure no membrane remains as this could
compromise the integrity of the vacuum

Attach the air-filled IV infusion set to the
syringe. Use the luer fitting on the distal end
of the set or cut approximately 1 inch (2.5
cm) off the distal end and press the tubing
firmly into the tip of the syringe. Ensure a
good seal is formed between the two devices

Splice a T-fitting into the IV infusion set
tubing approximately 1 foot (30 cm) up from
the syringe attachment. Connect the pressure
gauge to the T-fitting port

Push the syringe plunger in until it stops
3. Load the modified IV infusion set into the pump
and close the door. Ensure that the set tubing is
not kinked.
4. Enter self-test mode and select test
027
. See 'Entering
Self-Test Mode' for instructions.
5. Press the RUN/HOLD switch to enter the Vacuum Display mode and display VAC MMHG .
6. Pull the syringe plunger out until the pressure gauge reads
-95
mmHg and immediately clamp off tubing below the
pump to hold the vacuum stable.
7. Adjust the vacuum detect potentiometer R45 on the Accessory Interface Board until the numeric display on the
pump reads -95 ± 5 mmHg .
Note:
R45
is the upper potentiometer on the Accessory Interface Board.
8. Perform the 'Vacuum Retention Verification' procedure as detailed in
Chapter 3, 'Routine Maintenance'.
Vacuum System Calibration (Test 27)
Syringe
Pressure
Gauge
Proximal
End of Set
Selecting Pressure Units
The pressure units can be configured to be displayed as millimetres of mercury (mmHg) or
as centimeters of water (cmH20).
To select the pressure units:

Set the Pressure Unit Selector switch on the rear panel to the required position.
Pressure Unit
Selector Switch
Do not adjust the lower
potentiometer, R4, this
is pre-adjusted during
manufacture.