Gardner Denver AUTOSENTRY EAQ99Q, Operating And Service Manual

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COMPRESSOR CAPACITY CONTROL - TURN VALVE UNITS ONLY
The capacity of the compressor is controlled by the action of the turn valve and the compressor inlet
valve.
The turn valve controls compressor delivery to match demands of 40% to 100% of the compressor’s
maximum capacity. The inlet valve throttles to control compressor delivery to match demands of 0% to
40% of the compressors maximum capacity.
Example with normal setting of 100 PSIG:
Compressor Delivery
Capacity Inlet Valve Position Turn Valve Position
Discharge Manifold
Pressure (psi)
Full Open Closed 100
70% Open 50% Open 100
40% Open Full Open 100
30% Closing Full Open 103
20% Closing Full Open 103
0% Closed Full Open 103