What is the purpose of low ambient controls for air-cooled condensers?
A) To control the ambient temperature
B) To maintain a maximum head pressure, even at lower-than-normal operating conditions
C) To increase the fan speed to compensate for low barometric pressure
D) To maintain a minimum head pressure, even at lower-than-normal operating conditions
D
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Before any cutting or welding is performed, what must be available in the work area?
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