The Castair Aftercooler Option Bundle AOC2D (Duplex) 230V is the complete factory-installed options package for Cast Air C2 duplex compressor systems on 230V electrical service. Two C2-series pumps share a common tank with automatic alternation and failover — and this bundle ensures both pumps have a properly rated aftercooler, automatic drains, hour metering, and vibration isolation factory-installed and matched at the factory. Bundle pricing saves 10% over ordering options individually.
The C2 duplex is the mid-tier redundant compressor in the Cast Air lineup — typically paired on a 240-gallon horizontal tank. Two V4 two-stage cast iron pumps, alternating operation, producing a combined 56–70 CFM at pressure in typical configurations. The AOC2D bundle provides everything needed to keep that system running clean and dry from day one.
What the AOC2D 230V Bundle Includes
Dual Aftercooler System
- Dual Belt Guard Aftercoolers (#BGAC1x2M): Two factory-mounted aftercoolers, 70 CFM total capacity, one per pump head. Cooling the discharge of both pumps removes approximately 65% of water vapor before air enters the shared tank. Max 250 PSIG, max 350°F inlet temperature.
Automatic Drain System
- Air-Operated Auto Drain (#ADVSM): Discharge-pressure-operated automatic drain with installation kit. No separate power supply needed. Purges condensate on each compressor cycle.
- Electronic Auto Drain (#SDV03M): 115V timer-controlled solenoid drain with strainer. Handles timed purge cycles during idle periods — keeps condensate from sitting in the tank and aftercooler separator overnight.
Hour Meter
- Hour Meter (#HRM75M): 230V-rated elapsed time meter. Track actual run hours on each pump head to balance service intervals in the duplex setup. When one pump reaches an oil change or valve inspection interval, it can come down for service while the other continues to carry the load.
Dual Control
- Dual Control (#DC2): Selectable start/stop or constant-speed load/unload modes. In production environments with sustained demand, constant-speed mode eliminates motor cycling and extends starter and motor life. Start/stop mode handles lighter demand periods efficiently.
Intake Noise Silencers
- Intake Noise Silencers (#SA100x2M): Two factory-mounted intake silencers, one per pump head. Reduces intake noise at operating RPM without restricting airflow to either pump.
Vibration Management
- Vibration Pads (#VP1004): Set of four heavy rubber isolation pads. Two pump-motor sets alternating operation generate continuous vibration — isolation pads protect the tank, floor slab, and distribution piping over the life of the installation.
Right From Start Kit
- #RFS002: Factory startup kit for C2 pump family. Correct oil fill and break-in procedure documentation for both pump heads. Proper startup is critical — incorrect oil or dry startup causes immediate pump wear that's expensive to repair.
Who Needs the AOC2D 230V Bundle
This bundle is for facilities running a Cast Air C2 duplex compressor on 230V service (single-phase or three-phase 230V). If your facility has 460V three-phase service, see the AOC2D-460 listing instead. The 230V rating covers the full range of C2 duplex customers: auto shops, body shops, commercial facilities, and any operation where air demand justifies duplex redundancy but 460V service isn't available.
Duplex vs. Simplex — When to Pay the Premium
- Simplex AOC2 230V: One C2 pump. Less expensive. Service the pump and you lose air. Acceptable for shops that can schedule downtime.
- Duplex AOC2D 230V (this product): Two C2 pumps. Automatic failover. No scheduled downtime for single-pump maintenance. The right call when losing air means losing revenue.
- Step Up to AOC3D: If you need more than 70 CFM combined from two C3 pumps, the AOC3D duplex bundle is the next tier.
Technical Specifications
- Voltage: 230V (single-phase or three-phase)
- Compatible Compressor Family: Cast Air C2 duplex
- Aftercooler: #BGAC1x2M (dual), 70 CFM rated
- Max Operating Pressure: 250 PSIG
- Max Inlet Air Temperature: 350°F
- Hour Meter: #HRM75M (230V)
- Auto Drain: Air-operated #ADVSM + Electronic #SDV03M (115V)
- Dual Control: #DC2
- Intake Silencers: Two (#SA100x2M)
- Vibration Pads: #VP1004 (set of 4)
- Startup Kit: #RFS002
- Bundle Savings: 10% off individual component pricing
What's in the Box
Factory-installed option package. All components are mounted and tested on your duplex compressor before it ships. Contact us at 866-217-0063 or Cast Air at (320) 796-0851 for current pricing and lead times.
Why Buy From OEM Diagnostic Tools?
We've specialized in professional shop equipment since 2016. Free shipping, free pre-sale technical support at 866-217-0063, and full Cast Air manufacturer warranty on every purchase. We'll confirm the AOC2D 230V is the right match for your specific duplex model and service voltage before you order.
Call 866-217-0063 for quick answers and help!
