3708.003 Rev G P/N 33397 5 of 13
Released September 2022 User Manual Model 3708 MRI Regulator
The 3700 Series Intermitting Suction Regulators are designed to provide an intermittent suction source for
gastrointestinal drainage procedures. They may also be used in procedures needing continuous suction.
Installation
All Boehringer MRI Conditional suction regulators are supplied with fittings specified at the
time of purchase. These fittings are not to be removed or replaced by anyone other than
Boehringer Laboratories personnel. Removal or replacement of any MRI Conditional suction
regulator fitting by other than Boehringer Laboratory personnel could create a safety hazard,
and will void any and all warranties.
Operation –
Model 3708 MRI Regulator incorporates a 3-way control valve with OFF, REG, and LINE.
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.
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.
LINE: With control valve in the LINE position, the regulating mechanism is bypassed. Full
wall suction is applied to the patient collection system through the lower port of the Regulator.
The LINE suction mode is engaged by depressing the safety spring release and rotating the
control valve to the line position. LINE setting is verified by the exposure of the "LINE"
warning at the bottom of the gauge label.
CAUTION: Full line suction may cause damage to sensitive tissue.
Maintenance - All Models
Your Boehringer Regulators have been designed to provide years of trouble free operation.
Most service activity is the result of aspiration of bodily fluids or other foreign materials into
the regulator. The routine use of an appropriate collection canister greatly reduces needed
service. To determine your cleaning/maintenance schedule:
•Periodically inspect the overall condition of the instrument. Test the gauge accuracy
and check the instrument function as described under ‘Test’. Simply clearing the small
orifices in the gauge view tube and the regulator body can remedy many performance
conditions (see troubleshooting). Return to service if the instrument performs
appropriately per the ‘Test’ requirements.
•Based on data from your periodic inspections, determine a cleaning/maintenance
schedule appropriate for the operational conditions of your facility. Clean, inspect,
lubricate, and test based on your schedule and according to the Instrument Cleaning
and Disinfection, Instrument Lubrication and ‘Test’ section outlined below.
