The Turbo Air® 3000 Centrifugal Compressor Compressor Handbook
The Turbo Air® 3000 Centrifugal Compressor Compressor Handbook
The Turbo Air® 3000 Centrifugal Compressor Compressor Handbook
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Control System Troubleshooting...continued<br />
Condition: Possible Causes:<br />
Troubleshooting<br />
Motor Overload<br />
Maximum amp set point too high<br />
Inlet valve or guide vane assembly inoperative<br />
Inlet valve or guide vane assembly out of adjustment<br />
<strong>The</strong>rmal overload relay set improperly<br />
Current transducer faulty<br />
Starter problem<br />
Motor problem.<br />
Control Valve(s) Faulty<br />
Wiring from control panel faulty.<br />
Instrument air supply interrupted (pneumatic valves).<br />
Instrument air supply pressure too low (pneumatic<br />
valves only).<br />
Inlet valve or guide vane assembly adjusted<br />
improperly.<br />
Malfunction of mechanical linkage of control valves.<br />
Control solenoid valve malfunction (bypass valve).<br />
Inlet guide vane assembly motor or drive coupling<br />
Malfunction.<br />
Valve failure.<br />
Pneumatic actuator failure.<br />
Current to pneumatic transducer failure (pneumatic<br />
valves only).<br />
Solid state relay failure on Main Logic Module<br />
(electric actuated only).<br />
Analog output failure on Main Logic Module<br />
(pneumatic actuated only).<br />
<strong>Compressor</strong> Control Performance Abnormal<br />
Set points incorrect.<br />
Sensor reading faulty.<br />
Control valve(s) faulty.<br />
Control system tuning faulty.<br />
6—11
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