Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Pipe thread sealant
Step-by-Step Installation
- Choose Installation Location: Select a clean, dry, well-ventilated location with adequate clearance for maintenance and operation.
- Prepare the Surface: Place on a solid, level concrete floor capable of supporting the compressor's weight (approximately 200 lbs when full).
- Check Oil Level: Verify oil level in the pump before first use. Add compressor oil if necessary to reach proper level.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, 15A dedicated circuit. Use appropriate gauge extension cord if needed.
- Air System Setup: Install air filter on intake, connect air hose to outlet using appropriate fittings with thread sealant.
- Pressure Settings: Set cut-in and cut-out pressure according to your tool requirements (typically 90-125 PSI).
- Initial Run: Run compressor without load for 30 minutes to break in pump, then check for leaks and proper operation.
Specifications
| Model Number | CMAF353B |
| Type | Vertical Tank Air Compressor |
| Color | Black/Red |
| Tank Capacity | 33 Gallons |
| Noise Level | 78 dB |
| Control Type | Pressure Switch with Manual Controls |
| Motor Type | Oil-Lubricated Induction Motor |
| Horsepower | 3.5 HP |
| Max Pressure | 175 PSI |
| CFM at 90 PSI | 7.5 CFM |
| CFM at 40 PSI | 9.2 CFM |
| Power Requirements | 120V, 60Hz, 15A |
| Dimensions (HxWxD) | 65 x 24 x 24 inches |
| Weight (Empty) | 150 lbs |
| Pump Speed | 1725 RPM |
Warranty Information
- Full Warranty: 2 years parts and labor
- Tank Warranty: Lifetime limited warranty
- Pump Warranty: 3 years on pump components
- Additional Coverage: Optional extended warranty available
For warranty service, contact Craftsman Customer Service at 1-888-331-4569 or visit Craftsman.com
Key Features
ASME Certified Tank
33-gallon ASME certified tank provides ample air storage for continuous tool operation with reduced motor cycling for longer life.
Oil-Lubricated Pump
Durable oil-lubricated pump design runs cooler and lasts longer than oil-free models, with easier maintenance and better performance.
High-Efficiency Motor
3.5 HP induction motor delivers reliable power with thermal overload protection to prevent motor damage from overheating.
Dual Voltage Capability
Can be converted to 240V operation for improved efficiency and reduced amperage draw in permanent installations.
Industrial Pressure Switch
Heavy-duty pressure switch with manual reset provides reliable pressure control and overload protection.
Thermal Overload Protection
Built-in thermal overload protection automatically shuts off motor if temperature exceeds safe operating limits.
Performance Specifications
Air Tool Compatibility
Runs most 3/8" and 1/2" air tools including impacts, ratchets, and sanders
Recovery Time
90-125 PSI recovery in approximately 2 minutes 45 seconds
Duty Cycle
50% duty cycle at 90 PSI for continuous professional use
Air Delivery
7.5 SCFM at 90 PSI provides consistent air flow for demanding tools
Tank Drain
Easy-access ball valve for quick moisture removal from tank
Regulator & Gauges
Precise regulator with twin gauges for tank and output pressure monitoring
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, pressure switch off, thermal overload tripped | Check power supply, ensure pressure switch is on, reset thermal overload |
| Low pressure output | Air leak, worn piston rings, clogged intake filter | Check for leaks, inspect piston rings, clean or replace air filter |
| Excessive noise/vibration | Loose components, worn bearings, improper mounting | Tighten all fasteners, check bearings, ensure proper installation |
| Motor overheating | Inadequate ventilation, excessive cycling, low voltage | Improve ventilation, check for leaks, verify proper voltage |
| Oil in air lines | Overfilled oil, worn piston rings, incorrect oil type | Check oil level, inspect rings, use only compressor oil |
| Slow recovery time | Worn valves, leaking check valve, intake restriction | Inspect valves, check for leaks, clean intake system |
Maintenance Schedule
- Daily: Drain moisture from tank, check oil level
- Weekly: Inspect for leaks, check belt tension
- Monthly: Clean intake filter, check valve operation
- Every 3 Months: Change compressor oil
- Every 6 Months: Inspect safety valve, check motor brushes
- Annually: Complete system inspection, replace air filter
Manual Downloads
Current Model Manuals
CMAF353B
33 Gal Vertical Air Compressor
CMAF353B1
33 Gal Compressor with Accessories
CMAF353B2
33 Gal Industrial Compressor
CMAF353B3
33 Gal Quiet Series Compressor
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