How to Clean Climbing Descent STOP: Essential Maintenance for Lifesaving Performance
Your Petzl STOP’s auto-locking cam is vulnerable to dirt, sand, and salt – contaminants causing 60% of device failures (UIAA Safety Commission). Neglecting cleaning risks delayed locking, erratic descent, or catastrophic failure. Follow this professional protocol to ensure reliability.
⚠️ Pre-Cleaning Preparation
- Disassemble: Remove the handle’s split ring and slide the handle off the axle (consult manual; some models differ).
- Initial Brushing: Use a soft-bristled nylon brush (toothbrush works) to dislodge loose grit from:Cam surfacesRope slotsHandle pivot pointsSpring cavityNever use metal brushes – they damage anodizing.
🧼 Deep Cleaning Process
- Rinse: Hold device under lukewarm running water (max 30°C/86°F). Angle to flush debris away from internal axles.
- Scrub: Gently brush all components with water only. Focus on:Cam teeth groovesRope entry/exit slotsHandle axle channel
- Critical: DO NOT submerge, soak, or use pressurized water. Avoid all solvents (alcohol, acetone, WD-40) – they degrade lubricants and plastics.
🌬️ Drying & Corrosion Prevention
- Shake Dry: Vigorously flick the device to eject water.
- Air Dry: Place in shade with slots downward for 24+ hours.
- Accelerate: Use compressed air (>3 bar) on pivots briefly. Hold nozzle 10cm away.Trapped moisture corrodes springs – leading cause of handle jams.
⚙️ Lubrication: Less is More
Component | Lubricant | Method | Avoid |
---|---|---|---|
Cam Pivot Axle | Dry PTFE Spray (Petzl Lube) | 1-second spray into joint | Oil, grease, silicone |
Handle Pivot | None (unless stiff) | If needed: minimal PTFE | Over-lubrication |
Rope Path | NEVER | N/A | Any product |
➡️ Pro Tip: Wipe excess lubricant with a microfiber cloth. Residue attracts dirt.
🔍 Post-Cleaning Inspection & Storage
- Function Test:Move handle: Should snap back smoothly.Check cam: Must rotate freely without grating.
- Visual Check:Cracks on body/handle? → Retire immediately.Deep grooves in rope slots? → Measure depth (replace if >1mm).Corroded springs? → Replace spring kit.
- Storage: Keep in ventilated bag/box away from UV light, chemicals, and humidity.
❌ Deadly Cleaning Myths Debunked
Myth | Fact | Risk |
---|---|---|
"Soak in vinegar removes rust" | Acid corrodes aluminum pivots | Sudden axle failure |
"WD-40 loosens sticky cams" | Attracts grime; degrades plastics | Cam seizure mid-rappel |
"Grease reduces friction" | Creates gummy buildup locking mechanism | Delayed auto-lock in fall |
✅ When to Retire Your STOP
Replace the device IMMEDIATELY if you find:
- Cracks (any location)
- Worn cam teeth (flat spots visible)
- Deformed rope slots
- Corroded or kinked springsAverage lifespan: 5 years with moderate use (Petzl guidelines).
Conclusion
Cleaning your STOP isn’t optional – it’s critical safety maintenance. Stick to water, soft brushes, and PTFE spray exclusively. Prioritize drying to prevent corrosion, inspect rigorously post-cleaning, and retire compromised devices without hesitation. A poorly maintained STOP can fail when you need it most. For complex issues, send it to Petzl’s certified service center. Record cleanings in your gear log – your life depends on this device’s flawless function.