Installation Guide
Tools Needed:
- Adjustable wrench set
- Level
- Screwdrivers (flat and Phillips)
- Pipe thread sealant
- Tape measure
Step-by-Step Installation
- Choose Installation Location: Select a clean, dry, well-ventilated location on a solid, level floor with adequate clearance for maintenance.
- Unpack and Inspect: Remove all packaging materials and inspect the compressor for any shipping damage.
- Position the Compressor: Place the compressor in its permanent location, ensuring it's level and stable.
- Electrical Connection: Connect to a properly grounded 120V, 15A, dedicated circuit. Use appropriate gauge extension cord if needed.
- Air System Setup: Install air hose connections using thread sealant. Ensure all connections are tight and leak-free.
- Oil Check: Check oil level in the pump and add if necessary (for oil-lubricated models).
- Initial Test Run: Run the compressor without load for 10-15 minutes to break in the pump and check for proper operation.
Specifications
| Model Series | CMAF081333 |
| Type | Vertical Tank Air Compressor |
| Tank Capacity | 33 Gallons |
| Motor Type | 1.8 HP, 120V Induction Motor |
| Max Pressure | 175 PSI |
| CFM at 40 PSI | 7.5 CFM |
| CFM at 90 PSI | 5.8 CFM |
| Pump Type | Oil-Free or Oil-Lubricated (varies by model) |
| Noise Level | 78 dB |
| Power Requirements | 120V, 60Hz, 15A |
| Dimensions (HxWxD) | 50 x 24 x 30 inches |
| Weight | 145 lbs |
| Duty Cycle | 50% at 90 PSI |
Warranty Information
- Full Warranty: 2 years parts and labor
- Tank Warranty: Lifetime limited warranty
- Motor Warranty: 3 years on induction motor
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 extended tool use and reduced motor cycling.
Oil-Free Pump
Maintenance-free oil-free pump design eliminates the need for regular oil changes and prevents oil contamination in air lines.
Dual Voltage Ready
Some models feature dual voltage capability (120V/240V) for increased flexibility in workshop setup.
Thermal Overload Protection
Built-in thermal overload protection automatically shuts off the motor if it overheats, preventing damage.
Quick-Connect Coupler
Industrial-style quick-connect air coupler allows for fast tool changes without tools or thread sealant.
Low Amp Draw
Efficient motor design with low amp draw allows operation on standard 15-amp household circuits.
Pressure Regulation System
Pressure Switch
Automatically starts and stops the motor to maintain preset pressure range (typically 115-175 PSI)
Pressure Gauge
Dual gauges display tank pressure and regulated output pressure for precise tool control
Regulator Valve
Allows adjustment of output pressure from 0 to maximum tank pressure for different tools
Safety Valve
Automatic pressure relief valve opens if pressure exceeds safe limits
Check Valve
Prevents backflow of air from tank to pump when compressor is off
Drain Valve
Easy-access drain valve for removing moisture from tank bottom
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, pressure switch fault, thermal overload | Check power supply, reset thermal overload, check pressure switch |
| Low pressure output | Air leak, worn pump rings, faulty check valve | Check for leaks, inspect check valve, test pump output |
| Excessive cycling | Air leak, worn pump, small tank for application | Check for leaks, ensure proper tank size for tools used |
| Overheating | Dirty cooling fins, inadequate ventilation, excessive duty cycle | Clean cooling fins, improve ventilation, reduce duty cycle |
| Excessive moisture in air | High humidity, inadequate draining, missing air dryer | Drain tank regularly, install aftercooler or air dryer |
| Unusual noises | Loose components, worn bearings, valve issues | Tighten all fasteners, check bearings, inspect valves |
Maintenance Schedule
- Daily: Drain moisture from tank, check for leaks
- Weekly: Check oil level (oil-lubricated models), clean intake filter
- Monthly: Inspect belts and pulleys, check safety valve operation
- Annually: Change oil (if applicable), inspect check valve, complete system check
- As Needed: Replace air filter, tighten fasteners, clean cooling fins
Manual Downloads
Current Model Manuals
CMAF081333
33-Gallon Oil-Free Vertical
CMEF081333
33-Gallon Oil-Lubricated
CMXF081333
33-Gallon Dual Voltage
CMAF081333B
33-Gallon Belt Drive
Popular Previous Models
919.167380
33-Gallon Oil-Free
919.167381
33-Gallon Horizontal
919.167382
33-Gallon 240V
919.167383
33-Gallon Industrial