The primary function of the device illustrated is to __________. Illustration GS-0029

Correct Answer: Option A — remove all but the frictional load of an air compressor at start-up

The illustrated device is an unloader mechanism. Its primary function is to hold the intake valves open during the startup sequence. This prevents the compressor from working against discharge pressure, allowing the motor to accelerate to operating speed while overcoming only the internal frictional resistance of the compressor's moving parts.