1. With the selector valve of the unit in the OFF position and the valve on the suction flowmeter fully closed
(clockwise), verify the supply gauge reads > 500 mmHg. If a minimum of 500 mmHg is not available,
check the incoming supply tubing, or check the suction inlet to confirm it is compliant with the NFPA 99
standard.
2. Adjust the WAGD suction flowmeter all of the way open (counterclockwise) verify the flowmeter
registers the flow and that audible suction can be heard. Ensure the supply gauge registers > 400
mmHg with the suction flowmeter all of the way open. If a minimum of 400 mmHg is not maintained,
VAVD may not be effectively applied, resulting in patient risk. Check the incoming supply tubing, or
check the suction inlet to confirm it is compliant with the NFPA 99 standard.
3. Connect the VAVD Controller to the cardiotomy reservoir. Turn the control valve to ON and adjust the
output to 20 mmHg. Ensure suction can be audibly heard and the unit maintains the 20 mmHg set point.
If the unit is unable to pass the pre-use criteria, please contact Customer Service 800-642-4945 to have
the unit returned for needed service / calibration.
Follow venous reservoir manufacturer’s instructions regarding proper set up and use.
Ensure that all air detection and control devices are in proper working order. It is recommended that over
pressurization and vacuum relief valves are used in conjunction with the venous reservoir. It is recommended
that the pressure inside the venous reservoir be monitored by the clinician.
Attach the externally reinforced clear tubing (WAGD Tube Assembly) to the vent port on the membrane
oxygenator. The tube is bidirectional and either end may be connected to the vent port as well as the WAGD
connection on Suction Flowmeter. Do not block or occlude the vent holes that are at both ends of the tube.
Follow membrane oxygenator manufacturer's recommendation for suction flow settings.
Connect the reservoir connection port to the venous reservoir. It is highly recommended to use a disposable
vapor trap between the vacuum regulator and the venous reservoir
OFF: With control valve in the OFF position, suction is off and the collection circuit is returned to
atmospheric pressure by an internal vent port, a special feature of the Boehringer design. Any additional
positive pressure or negative pressure in excess of 100mmHg will be vented from the patient collection
circuit.
REG: With control valve in the REG position, wall suction may be controlled to a specific level by turning
the large adjusting knob in the direction indicated. A spring opposed diaphragm assembly precisely
controls the level of suction provided at the lower port of the Regulator within the range of the gauge. This
assembly "senses" changes in the patient collection circuit and makes appropriate adjustments to maintain
the suction level that has been selected. Regulated settings are verified by the large, easy to read gauge.
3930.003 Rev C P/N 34031 7 of 9
Released July 2014 User Manual VAVD Controller
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