The Castair Aftercooler Option Bundle AOC1D (Duplex) 460V is a complete factory-installed options package for Cast Air duplex compressor systems running on 460V three-phase power. If you run a duplex C1-series unit and want the full complement of aftercooler, automatic drain, hour meter, dual control, and vibration management components installed and matched at the factory, this is the bundle that covers it all at a 10% savings over ordering individual options.
A duplex compressor means you have two pump heads operating on a shared tank — one runs while the other stands by. That configuration demands matched, properly rated accessories. Ordering the AOC1D bundle ensures everything is spec'd for a 460V duplex C1 installation from the start, not patched together after delivery.
What the AOC1D Bundle Includes
Aftercooler System
- Belt Guard Aftercooler (#BGAC1x2M): Factory-mounted dual aftercooler rated for 70 CFM — matched to duplex C1 output. Aftercooling reduces compressed air temperature from pump discharge (often 300°F+) down toward ambient. Every 20°F reduction in air temperature removes roughly 50% of water vapor; a properly sized aftercooler achieves 65% total moisture reduction before air reaches your tools or dryer.
- Max Operating Pressure: 250 PSIG
- Max Inlet Temperature: 350°F
Automatic Drain
- Air-Operated Auto Drain (#ADVSM): Automatically purges collected condensate from the tank and aftercooler separator on each compressor cycle. Eliminates the standing water that corrodes tanks from the inside and contaminates downstream air lines. Installation kit included.
- Electronic Auto Drain (#SDV03M): Timer-controlled solenoid drain with strainer, 115V. Provides timed purge cycles independent of compressor operation — useful when the system sits idle overnight and condensate accumulates.
Hour Meter
- Hour Meter (#HRM460M): 460V-rated elapsed time meter tracks actual compressor run hours. Use it to schedule oil changes, belt inspections, and valve service by hours run rather than guessing by calendar. Cast Iron two-stage pumps like the C1 are built for 15,000+ hours of service when maintained on schedule — this meter is how you stay on schedule.
Dual Control
- Dual Control (#DC1): Allows the compressor to operate in both load/unload (constant-speed) mode and start/stop mode. In a duplex setup with predictable demand, constant-speed unloading reduces motor starts and extends motor life. When demand is intermittent, start/stop saves power. Dual control gives you both options.
Intake Noise Silencer
- Intake Noise Silencer (#SA100x2M): Two silencers for the duplex configuration, one per pump head. The cast iron C1 pump runs at relatively low RPM (around 1,100 RPM in the D5112 configuration), but intake noise in a shop or mechanical room is still a real issue. These reduce intake noise without restricting airflow.
Vibration Management
- Vibration Pads (#VP1004): Set of four heavy rubber isolation pads. A duplex unit on 460V is typically a 120-gallon or larger horizontal tank installation — significant mass with two pumps alternating load. Vibration isolation protects the floor, the tank connections, and the distribution piping from fatigue cracks over time.
Right From Start Kit
- #RFS002: Cast Air's startup consumables kit. Includes the correct oil fill for initial startup, break-in instructions, and service documentation specific to the C1 pump family. Starting a two-stage pump dry or with the wrong oil is one of the most common causes of early pump failure.
Who Needs the AOC1D-460 Bundle
This bundle is for shops installing a Cast Air duplex C1 compressor on 460V three-phase service. The duplex configuration — two 5 HP C1 pumps on a shared tank — is typically found in shops that need genuine redundancy: one pump fails and the backup takes over automatically without shutting down production. Body shops, spray booths, tire shops, and any operation where losing air means losing a shift are good candidates.
The 460V rating means your building must have three-phase 460V power. Most shops on single-phase or 230V three-phase should look at the AOC1D (230V) bundle instead. Running a 460V motor on 230V or miswiring it is an immediate motor failure. Match your service voltage before ordering.
Simplex vs. Duplex — Which One Does Your Shop Need
- Simplex (AOC1): Single C1 pump. If the pump goes down for service, you're down. Fine for shops with backup air or flexible schedules. Lower upfront cost.
- Duplex (AOC1D): Two C1 pumps sharing a tank with alternating operation and automatic backup. Adds cost but provides genuine failover. If you cannot afford downtime, duplex is the right call.
- Stepping Up: AOC2D bundle covers C2 duplex systems (two 7.5 HP or 10 HP pumps). If your CFM demand is higher or you need a larger tank, the C2 duplex is the next tier. Compare your actual shop CFM requirements against the C1 duplex output (around 35 CFM at 175 PSI in the D5112 configuration) before committing.
Technical Specifications
- Voltage: 460V, three-phase
- Compatible Compressor Family: Cast Air C1 duplex (e.g., D5112HC1-S)
- Aftercooler Rating: 70 CFM (dual #BGAC1x2M)
- Max Operating Pressure: 250 PSIG
- Max Inlet Air Temperature: 350°F
- Hour Meter: 460V rated (#HRM460M)
- Auto Drain: Air-operated (#ADVSM) + Electronic (#SDV03M, 115V)
- Dual Control: #DC1 (start/stop and load/unload modes)
- Intake Silencers: Two (#SA100x2M)
- Vibration Pads: Set of 4 (#VP1004)
- Startup Kit: #RFS002
- Bundle Savings: 10% off individual component pricing
What's in the Box
The AOC1D-460 is a complete factory option package ordered with your compressor. Cast Air installs and matches all components at the factory. What ships is a fully assembled duplex unit with all bundle options factory-mounted and tested. Individual components included are listed in the specifications above. Contact Cast Air or your dealer for current pricing and lead times on factory-installed option bundles.
Why Buy From OEM Diagnostic Tools?
We have specialized in professional shop equipment since 2016. When you order a Cast Air option bundle through us, you get free shipping, free pre-sale technical support at 866-217-0063, and the full manufacturer warranty. We can help you verify that the AOC1D-460 matches your specific duplex compressor model and your facility's electrical service — call before you order if you have questions about compatibility.
Call 866-217-0063 for quick answers and help\!
