Chicago Pneumatic CPS 750, Инструкция по эксплуатации, Страница: 78 / 94

CPS 750
78 1310 3012 02
CPS
Problem: Pressure in air receiver rises above maximum and causes safety valve to blow.
Problem: After working some time, the unit stops through a shutdown switch.
Problem: Air and oil mist expelles from air filters immediately after stopping.
Possible faults Corrective actions
Regulating valve (RV) opens too late or its
ball valve spring is broken. Dismantle and inspect parts.
Air leaks in regulating system. Check hoses and their fittings. Stop leaks;
replace leaking hoses.
Air intake throttle valve does not close for
some reason. Remove air filters, air intake manifold and
throttle valve spring seat. Withdraw the
valve and inspect. Replace parts where
necessary. Caution: the spring seat is fixed
with 4 short and 2 long setscrews: first
remove the short screws, then release the
spring tension unscrewing the long ones.
Minimum pressure valve malfunctioning. Remove and inspect valve.
Blow-off valve malfunctioning. Remove and inspect valve.
Possible faults Corrective actions
Engine oil pressure too low. Refer to the engine instruction manual.
Compressor or engine overheating. See corrective actions “Compressor
overheating”.
Fuel tank contains insufficient fuel. Fill fuel tank.
Low coolant level. Top up cooling system.
Possible faults Corrective actions
Check valve at element outlet. Remove and inspect. Replace if necessary.
Replace air filter elements and safety
cartridges. Check the oil level and add oil if
necessary. Run the compressor for a few
minutes, stop and recheck oil level.
Plunger of oil stop valve jammed. Remove and inspect. Replace if necessary.
Replace air filter elements and safety
cartridges. Check the oil level and add oil if
necessary. Run the compressor for a few
minutes, stop and recheck oil level.