Wrong machine runs as lead, machines fight each other, or trim unit short-cycles.
1
Sequencer setpoints overlapping between machines
CheckReview each machine's load/unload band and the master sequencer's cascade bands for overlap.
FixStagger setpoints per OEM sequencing guide so only one machine trims at a time.
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2
Lead/lag rotation not updating (one machine always runs, wearing unevenly)
CheckCheck auto-rotation timer/hours-based rotation setting in sequencer.
FixEnable and configure auto-rotation per run hours.
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3
Communication loss between sequencer and one or more compressors
CheckVerify network status/LEDs on each compressor's comm module.
FixRepair network wiring/addressing; confirm protocol compatibility.
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4
Pressure sensing point for sequencer not representative of system
CheckVerify sequencer's pressure transducer location vs point of use; check for excessive distance/pressure drop.
FixRelocate sensing point or add local trim sensing per OEM guidance.
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Safety
Lockout/tagout before opening enclosures. Verify zero energy. Bleed system pressure before opening any pneumatic connection.