Your VAVD Controller has been designed with the highest quality materials and to the strictest production
tolerances. Unlike common hospital suction regulators, the VAVD controller has precision low suction output
and redundant safety features to limit excess negative pressure and positive pressure. Given the critical nature
of the clinical interventions for which the VAVD Controller is employed, and the inherent risk involved in applying
unregulated suction during these procedures, only factory service and calibration may be performed on this unit.
Factory calibration is recommended - -
• Any time fluid has entered the VAVD Controller.
• Any time there is physical damage noted to VAVD Controller.
• Any time the VAVD Controller fails a pre-use test.
• A minimum of every 24 months.
WAGD Tube Assembly (Model 3947) - -
It is recommended to replace the WAGD Tube Assembly every (3) three months or sooner if it has any sign of
being damaged or visibly contaminated. Additional WAGD Tube Assemblies (Model 3947) are available for
purchase.
Please call Customer Service at 800-642-4945 to obtain an RMA prior to return or to order additional WAGD
Tube Assemblies (Model 3947). Once the unit has been received you will be contacted with an estimate of any
service charges. Units will be serviced within five days of receipt of charge authorization.
After patient use, wipe all exterior surfaces of the VAVD Controller with an appropriate surface
disinfectant. Appropriate disinfectants are:
• 3M Quat®
• Cavacide®
Your VAVD regulator has been designed for years of trouble-free service. Should you experience difficulty that
is not the result of damage to the instrument, the most likely cause is aspiration of dirt and/or fluids into the
Regulator.
Symptom Probable Cause Solution
Instrument fails to provide suction at
the patient port.
The supply or patient fittings are clogged,
or the incoming suction tubing is collapsed
Replace or clean the fittings. Replace the
incoming suction line.
Gauge doesn't respond to changes in
suction (via control valve or
adjustment knob)
Gauge diaphragm is improperly sealed on
the gauge piston and/or view tube
Reference Boehringer Tech Bulletin
3700.044.
Gauge piston is discolored.
Material has entered the inside of the
device.
Instrument is contaminated. Please return to
the factory for service.
Instrument will not shut off or exhibits
high spike.
Dried fluids may have cut the quad ring
seal.
Please return to the factory for service.
Instrument fails to regulate suction
Piston/Stem surface is binding with foreign
matter
Please return to the factory for service.
Audible sound coming from safety
port on safety interrupter
Material has entered the inside of the
device.
Instrument is contaminated. Please return to
the factory for service.
3930.003 Rev C P/N 34031 8 of 9
Released July 2014 User Manual VAVD Controller
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