Pumps – Processes
Patent
1992-02-10
1993-03-30
Bertsch, Richard A.
Pumps
Processes
417 63, F04D 2508
Patent
active
051978628
ABSTRACT:
The effectiveness of a radon mitigation system is in large part a function of the vacuum and air flow produced by a fan. Since a relationship exists between the vacuum and air flow of any given fan, it is advantageous to be able to identify any malfunctions in the system which result in fan air flow being increased or decreased. Such changes in air flow may impede the ability of the system to alleviate radon concentrations. Fan air flow may be monitored by measuring current draw of the fan with an ammeter or other electric current measuring device. Such measurements may be facilitated by mounting the ammeter in a control unit including a reduction transformer, which feeds 24 volt electric current to the fan. After measurements of fan current draw have been measured and indicated, current may be increased to 120 volts by a fan voltage booster, to power the fan.
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"Radon Contractor Proficiency Program Interim Radon Mitigation Standards," Dec. 15, 1991.
Bertsch Richard A.
Gould Linda Flewellen
Scheuermann David W.
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