How to find air compressor model number?
On a Coleman air compressor like model L0501512, the model number is stamped or printed on the unit’s identification label (often a metal or foil placard). Once you find it, use that exact number to match the correct parts list and repair information.
Where to look on the compressor
Check these common label locations first:
- On the air tank near the handle, feet, or drain valve
- On the pump or motor shroud/cover (side or rear)
- Near the pressure switch area (where the power cord enters)
- On the frame/base rail under the tank
- On the rear panel if your unit has a wraparound housing
What the label usually includes (and what to copy)
Most air compressor ID labels include several numbers. For parts lookup, copy the model number exactly.
| Label item | What it means | Use it for |
|---|---|---|
| Model number | The unit’s identifier (example: L0501512) | Parts match and diagrams |
| Serial number | Unique to your specific unit | Service history, age tracking |
| Tank capacity / PSI | Performance ratings | Setup and troubleshooting |
| Electrical ratings | Volts/amps/Hz | Power and motor checks |
Tips to read a worn or dirty model label
If the placard is hard to read:
- Wipe it with a damp rag and mild cleaner; dry fully
- Use a flashlight at a low angle to highlight stamped characters
- Take a close-up photo and zoom in
- Write down every character; model numbers often mix letters and numbers
Why it matters
Air compressor parts (pressure switch, check valve, regulator, gauges, pump components) vary by model and production run. Using the exact model number prevents ordering the wrong part and speeds up troubleshooting.
Next step if you are troubleshooting
If you are trying to identify the model number because the compressor is not running, our DIY guide for air compressor won't start walks through the most common causes and checks.
Last updated: February 2026
What is the most common cause of air compressor failure?
The most common cause of air compressor failure (including on the Coleman L0501512) is poor maintenance that leads to overheating and internal wear: dirty intake filtration, restricted cooling airflow, moisture contamination, and running the unit beyond its duty cycle. These issues accelerate pump, valve, and motor damage.
Most common failure drivers we see
- Overheating from blocked cooling fins, poor ventilation, or long run times
- Dirty or clogged intake filter that makes the pump work harder and run hotter
- Moisture left in the tank that causes internal corrosion and can damage valves and fittings
- Air leaks at fittings, drain valve, regulator, or hose connections that force constant cycling
- Electrical stress (weak outlet, undersized extension cord, failing pressure switch, bad capacitor)
- Worn pump components (reed valves, piston seal, cylinder) that reduce compression
Quick checks that prevent major failures
- Confirm airflow: keep the compressor in open space; clean dust from the shroud and cooling areas.
- Drain the tank: open the tank drain after use to purge water and reduce rust.
- Listen for leaks: spray soapy water on fittings; bubbles pinpoint leaks.
- Watch cycling behavior: rapid on/off cycling usually means a leak or pressure switch issue.
- Avoid long extension cords: low voltage overheats motors and can trip breakers.
Symptom-to-cause cheat sheet
| What you notice | Most likely cause | What to do first |
|---|---|---|
| Won’t start | Power/cord/outlet issue, pressure switch, capacitor | Verify outlet voltage, remove extension cord, reset breaker |
| Runs but won’t build pressure | Leak, worn valves/seals, bad check valve | Check for leaks, inspect check valve |
| Trips breaker | Overload, low voltage, failing motor/capacitor | Use dedicated circuit, shorten cord, check capacitor |
| Gauge/regulator acts wrong | Faulty gauge or regulator | Compare gauge readings, inspect regulator |
Why it matters
Heat and contamination are the fastest ways to shorten an air compressor’s life. Keeping airflow clear, draining moisture, and fixing small leaks reduces run time and protects the pump and motor.
Related DIY help
- Use our troubleshooting steps for air compressor won't start when the motor won’t run.
- If pressure is low, follow air compressor won't build tank pressure to narrow down leaks vs. pump wear.
- For persistent leaking, use air compressor air leaks to pinpoint the source.
Last updated: February 2026
Which is better, CFM or SCFM?
Neither is “better” in every situation; CFM describes actual airflow under your current conditions, while SCFM standardizes the rating so you can compare compressors fairly. When choosing capacity for a Coleman air compressor like model L0501512, we use SCFM to match your air tool’s requirement and avoid pressure drop.
What CFM vs. SCFM means (in plain terms)
- CFM (actual CFM): airflow the compressor delivers at your real temperature, altitude, and humidity.
- SCFM (standard CFM): airflow corrected to standard conditions so ratings are apples-to-apples.
- Why ratings look different: the same pump can show different CFM depending on where and how it’s measured.
- What matters for tools: most air tools list an airflow requirement that aligns best with SCFM at a stated PSI.
Which one to use when shopping or comparing
Use this quick rule:
- Comparing different compressors: prioritize SCFM.
- Estimating real performance in your shop: consider CFM (and expect it to vary with conditions).
| If you are trying to… | Use this rating | Why |
|---|---|---|
| Compare two compressor models | SCFM | Standard conditions make comparisons fair |
| Confirm a tool will run continuously | SCFM at the tool’s PSI | Matches how tools are typically specified |
| Understand why output changes by location/season | CFM | Reflects real-world conditions |
How much SCFM you actually need for air tools
We size airflow so the compressor does not run constantly and the tank pressure does not sag.
- Find the tool requirement (example: 4.0 SCFM @ 90 PSI)
- Choose a compressor rated at about 1.5x the tool demand for comfortable operation
- For intermittent tools (brad nailers, inflators), you can run closer to the tool’s number
- For continuous tools (DA sanders, grinders, HVLP spraying), airflow margin matters more than tank size
Why it matters
If you rely on CFM alone, you can end up with a compressor that looks strong on paper but struggles to keep up at your working PSI. Using SCFM helps you pick the right pump capacity for stable pressure and consistent tool performance.
For related troubleshooting and performance tips, see air compressor common questions.
Last updated: February 2026
