1
Receiver too small for demand
CheckCalc: 1 gal per CFM minimum; 4 gal/CFM for variable loads.
FixAdd storage / dry receiver.
2
Cut-in/cut-out band too narrow
CheckTypical band 10–20 PSI.
FixWiden differential on pressure switch.
3
Leak in control air line
CheckSoap test pilot lines.
FixRepair.
4
Demand exceeds capacity
CheckLog run/unload times.
FixAdd compressor / fix leaks / reduce demand.
Safety
Lockout/tagout before opening enclosures. Verify zero energy. Bleed system pressure before opening any pneumatic connection.