CompAir DELCOS Pro / XL / 3100
CompAir shares parent (Gardner Denver / Ingersoll Rand) with GD — some sensors are cross-compatible but part numbers differ.
Manufacturer
CompAir (Gardner Denver / Ingersoll Rand)
Display
DELCOS XL: 5.7" TFT color; DELCOS Pro: 4-line monochrome.
Years produced
DELCOS Pro ~2008 – 2016; DELCOS XL ~2016 – present. DELCOS 3100 for large frames.
Power supply
24 VDC control power.
Ambient range
0 – 46 °C.
Protection rating
IP54 front.
Relay outputs
Star / delta / main, blowdown, dryer, alarm, remote-run.
Replaces
DELCOS 1000, DELCOS 3000
Used on
- CompAir L-Series rotary screws
- CompAir D-Series
- CompAir Cyclon
- CompAir DH & DL two-stage
On AirCompDX
Features
- Sequencing via SmartAir Master
- Assure remote monitoring
- Modulation, load/unload, or dual control
Interfaces
- Ethernet Modbus TCP
- RS-485 Modbus RTU
- Optional Profibus
Sensor inputs
- Airend discharge temp
- Line pressure
- Sump pressure
- Separator ΔP
- Ambient (option)
Common fault codes
First checks
- Coolant level / cooler cleanliness
- Thermal valve
- Sensor calibration
First checks
- Cooling airflow; PTC continuity
First checks
- Change separator, filter, oil as set
First checks
- Reset; verify class & FLA; phase balance
First checks
- Check setpoints; inlet valve closure
First checks
- Verify 3 phases; swap for rotation; check phase monitor
First checks
- Wiring / polarity; test against reference
First checks
- Release; check remote loop
First checks
- Perform kit; reset timer
Fault list is non-exhaustive and firmware-dependent. Always confirm against the controller’s on-screen help or OEM manual.
Wiring notes
- 24 VDC control; 120/230 VAC coil options depending on region
Known issues & field notes
- DELCOS Pro CPU battery drift after long shutdown — replace at each major service
Manuals & literature
Ingersoll Rand — support portal
Customer Care → Manuals & Parts (login often required)
Your manuals
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