The Castair Aftercooler Option Bundle AOC3 460V is the complete factory-installed options package for Cast Air C3-series simplex compressors wired for 460V three-phase power. The C3 pump is Cast Air's 15 HP two-stage industrial workhorse — a W3-configuration cast iron pump weighing 485 lbs, producing approximately 62 CFM at 0 PSI and 50 CFM at 175 PSI, running at 795 RPM. This is the compressor for high-demand shops: body shops with spray booths, tire and alignment shops running multiple lifts, or any facility where air demand stays high throughout the shift.
The AOC3-460 bundle covers aftercooling, automatic drains, hour metering, dual control, intake silencing, and vibration isolation — all factory-installed and matched to C3 output specs. Bundle pricing saves 10% over ordering individual options.
What the AOC3 460V Bundle Includes
Aftercooler System
- Belt Guard Aftercooler (#BGAC3M): Factory-mounted, sized for 20 HP and up applications — correctly matched to C3 output. Cools compressed air from pump discharge temperature (typically 280-350°F) toward ambient, achieving approximately 65% water vapor reduction. Cooler, drier air means less work for your refrigerated dryer, less condensate in your lines, and longer tool life. Max operating pressure 250 PSIG, max inlet temperature 350°F.
Automatic Drain System
- Air-Operated Auto Drain (#ADVSM): Discharge-pressure-operated drain valve with installation kit. Purges condensate automatically on each compressor cycle. No additional electrical connection required.
- Electronic Auto Drain (#SDV03M): 115V timer-controlled solenoid drain with inline strainer. Handles scheduled purge cycles during off-hours when the compressor is not cycling but condensate continues to accumulate in tanks and separators.
Hour Meter
- Hour Meter (#HRM460M): 460V-rated elapsed time meter. A 15 HP industrial compressor running production shifts needs maintenance on a defined schedule — not when something breaks. Oil changes, belt tension, valve inspection, and head bolt torque checks all have hour-based intervals. This meter tracks them accurately.
Dual Control
- Dual Control (#DC3): Selectable start/stop or constant-speed load/unload operation. The C3 at 15 HP benefits significantly from constant-speed unloading during high-demand production hours — fewer motor starts, cooler motor windings, extended starter and motor life. Switch to start/stop during lighter-demand periods.
Intake Noise Silencer
- Intake Noise Silencer (#SA100M): Factory-mounted intake silencer. The W3 cylinder configuration of the C3 pump has a distinct intake note at 795 RPM. The silencer reduces intake noise in the compressor room without restricting airflow or reducing CFM output.
Vibration Management
- Vibration Pads (#VP1004): Set of four heavy rubber isolation pads. A 485-lb cast iron pump assembly running continuously generates significant vibration. Isolation pads protect the foundation, the tank, and all threaded connections throughout the service life of the unit.
Right From Start Kit
- #RFS003: Cast Air startup kit for C3 pump family. Correct initial oil fill (1 gallon capacity on the C3), break-in documentation, and service intervals. The C3 holds more oil than smaller pumps and has specific startup requirements — do not improvise this step.
Who Needs the AOC3-460 Bundle
This bundle is for facilities installing a Cast Air C3 15 HP simplex compressor on 460V three-phase service. At 50 CFM at 175 PSI, the C3 can supply 5-8 simultaneous air tools at typical shop pressures, depending on tool demand. Common applications: body shops with a 3-stage spray booth, mid-size manufacturing, commercial tire shops with multiple air-operated equipment, and general industrial facilities with sustained air demand.
The 460V three-phase requirement is non-negotiable — confirm your electrical service before ordering. If your facility is on 230V, the AOC3 (230V) bundle is the correct product.
C3 vs. Stepping Up or Down
- AOC2-460: C2 pump, 7.5-10 HP, approximately 35-45 CFM at pressure. Right for shops where total simultaneous demand stays under 40 CFM. If you are consistently running the C2 at or above 100% duty cycle, step up.
- AOC3-460 (this product): C3 pump, 15 HP, approximately 50 CFM at 175 PSI. The right size for medium-to-high production facilities.
- AOC4-460: C4 pump, 20-30 HP, approximately 72 CFM at 175 PSI. If your process demands run above 60 CFM continuously — large spray booths, multiple plasma cutters, sandblasting — the C3 will not keep up long-term. The C4 is the next step.
- AOC3D-460 (Duplex): Two C3 pumps for redundancy. If you cannot afford downtime for C3 maintenance, duplex is the answer.
Technical Specifications
- Voltage: 460V, three-phase
- Compatible Compressor Family: Cast Air C3 simplex (15 HP)
- Aftercooler: #BGAC3M (factory-mounted, rated 20 HP+)
- Max Operating Pressure: 250 PSIG
- Max Inlet Air Temperature: 350°F
- C3 Pump CFM (reference): 62 CFM at 0 PSI / 50 CFM at 175 PSI
- C3 Pump RPM: 795
- C3 Pump Weight: 485 lbs
- C3 Oil Capacity: 1 gallon
- Hour Meter: #HRM460M (460V)
- Auto Drain: Air-operated #ADVSM + Electronic #SDV03M (115V)
- Dual Control: #DC3
- Intake Silencer: #SA100M
- Vibration Pads: #VP1004 (set of 4)
- Startup Kit: #RFS003
- Bundle Savings: 10% off individual component pricing
What is in the Box
The AOC3-460 is a factory-installed option package. All components are mounted, connected, and tested on your C3 compressor before shipment. Contact us at 866-217-0063 or Cast Air directly at (320) 796-0851 for current pricing and lead times on factory-installed bundles.
Why Buy From OEM Diagnostic Tools?
We have specialized in professional shop equipment since 2016. Order through us and you get free shipping, free pre-sale technical support at 866-217-0063, and the full Cast Air manufacturer warranty. We will verify your electrical service, confirm the correct AOC tier for your C3 model, and help you decide between simplex and duplex before you commit.
Call 866-217-0063 for quick answers and help!
