The Castair Aftercooler Option Bundle AOC3 230V is the complete factory-installed options package for Cast Air C3-series simplex compressors wired for 230V electrical service. The C3 is Cast Air's 15 HP two-stage industrial pump — a W3-configuration cast iron assembly weighing 485 lbs, producing approximately 62 CFM at 0 PSI and 50 CFM at 175 PSI, running at 795 RPM. This bundle provides aftercooling, automatic drains, hour metering, dual control, intake silencing, and vibration isolation — all factory-installed and matched to C3 specs. Bundle pricing saves 10% over ordering individual options.
The C3 is the compressor for shops with serious sustained air demand. The AOC3 bundle ensures every supporting component is factory-matched, properly rated, and installed correctly from day one — not added in the field with mismatched hardware.
What the AOC3 230V Bundle Includes
Aftercooler System
- Belt Guard Aftercooler (#BGAC3M): Factory-mounted, rated for 20 HP and up output. Cools compressed air discharge before it reaches the tank, removing approximately 65% of water vapor. Properly cooled air extends dryer life, reduces condensate in distribution lines, and protects downstream equipment. Max 250 PSIG, max 350°F inlet temperature.
Automatic Drain System
- Air-Operated Auto Drain (#ADVSM): Automatic condensate purge on each compressor cycle, powered by discharge pressure. No separate power supply needed. Full installation kit included.
- Electronic Auto Drain (#SDV03M): 115V timer-controlled solenoid drain with inline strainer. Handles purge cycles during off-hours and idle periods when condensate accumulates without cycling.
Hour Meter
- Hour Meter (#HRM75M): 230V-rated elapsed time meter. Tracks actual C3 pump run hours for scheduled maintenance — oil changes (1-gallon capacity), belt checks, valve inspections. These are the intervals that determine whether a cast iron pump reaches 15,000 hours or fails at 5,000.
Dual Control
- Dual Control (#DC3): Start/stop and constant-speed load/unload modes. During production hours with sustained air demand, constant-speed mode keeps the motor from cycling and reduces wear on starters and windings. During lighter periods, start/stop saves energy and reduces heat buildup.
Intake Noise Silencer
- Intake Noise Silencer (#SA100M): Factory-mounted intake silencer for C3 pump. Reduces intake noise at 795 RPM operating speed without restricting airflow or CFM delivery.
Vibration Management
- Vibration Pads (#VP1004): Set of four rubber isolation pads sized for C3 installation. Protects the floor, tank welds, and distribution system connections from vibration fatigue over the compressor's service life.
Right From Start Kit
- #RFS003: Factory startup kit for C3 pump family. Correct initial oil fill (1 gallon), break-in procedure, and service documentation. Proper break-in on a two-stage cast iron pump matters — the C3 has specific startup requirements that differ from smaller pump families.
Who Needs the AOC3 230V Bundle
This bundle is for facilities installing a Cast Air C3 15 HP simplex compressor on 230V service — single-phase or three-phase 230V. If your facility has 460V three-phase, the AOC3-460 bundle is the correct product.
At 50 CFM at 175 PSI, the C3 handles high-demand shop environments: body shops with active spray booths, commercial tire shops, and general industrial facilities where total air demand runs 40–55 CFM during peak hours. It's the right compressor when the C2 is undersized but a duplex configuration is more than required.
Stepping Up or Down
- AOC2 230V: C2 pump, 7.5–10 HP, 35–45 CFM at pressure. Right for shops where demand stays under 40 CFM. If you're hitting demand limits with a C2, the C3 is the logical step up.
- AOC3 230V (this product): C3 pump, 15 HP, ~50 CFM at 175 PSI. The right tier for sustained high-demand shop air supply.
- AOC3D 230V: Duplex C3 — two pumps for redundancy. If a single C3 going down for service would shut your operation, duplex is the right choice.
- AOC4: C4, 20–30 HP, ~72 CFM at pressure. If you genuinely need more than 60 CFM continuously, the C3 is the wrong size — step to the C4.
Technical Specifications
- Voltage: 230V (single-phase or three-phase)
- Compatible Compressor Family: Cast Air C3 simplex (15 HP)
- Aftercooler: #BGAC3M (rated 20 HP+)
- Max Operating Pressure: 250 PSIG
- Max Inlet Air Temperature: 350°F
- C3 Pump CFM (reference): ~62 CFM @ 0 PSI / ~50 CFM @ 175 PSI
- C3 Pump RPM: 795
- C3 Pump Weight: 485 lbs
- C3 Oil Capacity: 1 gallon
- Hour Meter: #HRM75M (230V)
- 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's in the Box
Factory-installed option package. All components are factory-mounted and tested on your C3 compressor before shipment. 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 verify your service voltage, confirm the right AOC3 bundle, and help you decide between simplex and duplex before you order.
Call 866-217-0063 for quick answers and help!
