TROUBLE SHOOTING
67
SL, SM & SH 90, 110, 132, 150, 200, 250 &300 (50Hz)
L, H & HH 125, 150, 200, 250, 300, 350 & 400 (60Hz)
”HIGH 2ND STAGE PRESS”
Check for blockage or obstruction in air side of aftercooler, discharge moisture separator or discharge check
valve.
Ensure that air network has adequate receiver volume.
Ensure that isolation valve is fully open.
Ensure that discharge pipe is adequately sized.
”STARTER FAULT (1SL OR 2SL)”
Check for loose wires or faults on the control circuit.
Inspect starter connectors.
”MAIN MOTOR OVERLOAD”
Check for loose wires.
Check supply voltage.
Check heater size.
”FAN MOTOR OVERLOAD”
Check for loose wires.
Check supply voltage.
Check heater size.
Check for obstructions at machine inlet and outlet openings.
”HIGH COND LEVEL”
Check intercooler condensate drain system including strainer. Check valve and 6SV. Repair as required.
“CHECK SET POINTS”
Reset to clear.
Calibrate sensors.
Check all set points.
“CK CONTROL PWR/PHASE”
Check phase monitor.
Check fuses.
Check transformer and wiring connections.
“REMOTE STOP FAILURE”
Check remote stop switch and wiring
“REMOTE START FAILURE”
Check remote start switch and wiring
“EMERGENCY STOP”
Disengage emergency stop button.
Press reset button twice.
“SENSOR FAILURE”
Check for defective sensor, bad sensor connection or broken sensor wires.
Low system air pressure.
COMPRESSOR RUNNING IN ”UNLOAD” MODE.
CONTROLLER OFF–LINE SETPOINT TOO LOW.
Press ”LOAD” button.
Press ”UNLOADED STOP” button.
From options screen set off–line pressure at a higher value.
AIR LEAK.
Check air piping system.
Ensure that manual condensate valves are closed.
Also make sure solenoid–operated condensate valves are not stuck open.
UNLOADING VALVE NOT FULLY OPEN.
If inlet control hydraulic cylinder is not fully extended, replace inlet/unloading valve assembly.
SYSTEM DEMAND EXCEEDS COMPRESSOR DELIVERY.
Install larger or an additional compressor.
DIRTY AIR FILTER ELEMENT
Check filter condition.
Replace as required.
