IR P185WIR & XP185WIR Troubleshooting: Low CFM Output
If your Ingersoll Rand P185WIR or XP185WIR isn’t delivering the airflow you expect, it’s not just an inconvenience—it can bring your entire operation to a crawl. Low CFM (cubic feet per minute) output usually points to a few specific causes. Here’s how to diagnose and fix it.
Common Causes of Low CFM
- Low engine RPM: If the engine isn’t spinning fast enough, it can’t produce enough airflow.
- Dirty air filter: A clogged filter restricts air intake and chokes down compressor output.
- Incorrect linkage adjustment: Linkages that control throttle and load/unload operations can drift out of spec, reducing airflow.
- Incorrect pressure regulator adjustment: If your regulator is set wrong, the system won't maintain proper airflow under load.
- Malfunctioning inlet unloader or butterfly valve: A stuck or damaged valve can restrict intake air and limit CFM.
- Malfunctioning speed control cylinder: If the speed control doesn’t move properly, it can prevent full throttle under load.
- Defective minimum pressure valve: A valve stuck partially closed can throttle airflow downstream of the separator tank.
- Defective separator element: A clogged or collapsed separator creates backpressure that strangles air output.
Recommended Fixes
- Verify and correct engine RPM if it’s too low. (Fuel filters and air filters are common culprits.)
- Inspect and replace the air filter if dirty.
- Adjust or replace linkage components if they're worn or misadjusted.
- Inspect and reset the pressure regulator to factory specs.
- Clean, inspect, or replace the inlet unloader or butterfly valve.
- Test and replace the speed control cylinder if it’s sticking or weak.
- Replace a defective minimum pressure valve if needed.
- Replace a clogged or damaged separator element that’s restricting flow.
Wrap-Up
Low CFM output usually isn’t random—there’s almost always a specific mechanical or airflow problem behind it. Regular maintenance and quick fixes can keep your P185WIR or XP185WIR delivering the airflow you need without missing a beat.