Machine status interlock for reversing fan control
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United States of America Patent
Stats
-
Dec 2, 2008
Grant Date -
Jun 12, 2008
app pub date -
Dec 6, 2006
filing date -
Dec 6, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The air circulation fan associated with a radiator of some machines may include an automatic reversing purge cycle that is utilized to dislodge material from the radiator and/or intake screen of the cooling system housing. The purge cycle is locked out when a person may be in the vicinity of the air intake screen of the machine. A controller determines that a person may be in the vicinity of the air intake screen when the machine is idle stationary, such as by determining that a parking brake is engaged. By locking out the purge cycle during machine idle stationary conditions, the risk of blowing dislodged dirt and/or debris onto a person, who may be servicing the machine or accessing an operator station, can be avoided.
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