PROGRAMMABLE SUCTION PUMP
Section I. OPERATIONAL PROCEDURES
Lesson 1 discussed operation and maintenance of the high-volume suction
apparatus and traced its electrical circuits. Lesson 1 also provided a number of
troubleshooting techniques to help you isolate and remedy malfunctions in the system.
Lesson 2 deals with the same topics, applying them to a different suction apparatus, a
programmable suction pump. The title of this piece of equipment identifies its function
and difference from the previously discussed suction apparatus: the Impact Model
306M Programmable Intermittent Suction System. With the programmable feature, the
clinician may determine periods of intermittent suction rather than being constrained to
continuous suction. Discussed below are some of the system's unique aspects.
a. Electronic Vacuum Regulator. This circuit differs from conventional
mechanical regulators in several ways. First, the regulator is eliminated from the
vacuum path and, therefore, cannot leak, clog, jam, or stick. Second, the regulator is
energy efficient; it only draws current proportional to the amount of vacuum required.
Third, the regulator can precisely select vacuum levels with micrometer precision for the
most critical suction needs.
b. Electronic Intermittent Suction Circuits. These circuits determine ON and
OFF times, selectable in 144 different combinations. The off circuit shuts down virtually
the entire unit during its time period, thereby maximizing energy efficiency. The on
circuit immediately energizes the system for prompt response.
c. Emergency Battery. A sealed lead-acid (GEL Cell) battery is provided for
emergency and transitory use. Its operating life varies depending upon what vacuum
levels are drawn. With this in mind, a high-capacity battery was chosen which can
provide over one hour of continuous use at maximum vacuum (550mmHg). At
200mmHg, cycled intermittently at five seconds ON and five seconds OFF, the battery
will provide more than 12 hours of continuous use. Because this battery is not
considered the primary power source, restrict its use to emergencies and transport to
ensure available power.