Applicable Systems
PSE200/PSE201
Symptoms
The pneumatic system reports a cylinder internal leak. The cylinder is leaking internally, causing reduced performance.
Possible Causes
- Piston seal worn or damaged
- Cylinder bore scored or scratched
- Piston O-ring degraded from wear
Troubleshooting Steps
- Step 1: Perform a leak test by pressurizing and observing the opposite port
Air leaks through to the exhaust - Step 2: Disassemble and inspect the piston seal
Seal is worn or damaged - Step 3: Replace the piston seal and inspect the bore
New seal seats correctly in a smooth bore
How to Reset
To reset: Replace the cylinder seals, then clear the alarm.
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Source: SMC Pneumatic Equipment Manual, SMC Corporation
Category: Hydraulic & Pneumatic
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