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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

  1. Disassemble: Remove the handle’s split ring and slide the handle off the axle (consult manual; some models differ).
  2. 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

  1. Rinse: Hold device under lukewarm running water (max 30°C/86°F). Angle to flush debris away from internal axles.
  2. Scrub: Gently brush all components with water only. Focus on:Cam teeth groovesRope entry/exit slotsHandle axle channel
  3. Critical: DO NOT submerge, soak, or use pressurized water. Avoid all solvents (alcohol, acetone, WD-40) – they degrade lubricants and plastics.

🌬️ Drying & Corrosion Prevention

  1. Shake Dry: Vigorously flick the device to eject water.
  2. Air Dry: Place in shade with slots downward for 24+ hours.
  3. 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


ComponentLubricantMethodAvoid
Cam Pivot AxleDry PTFE Spray (Petzl Lube)1-second spray into jointOil, grease, silicone
Handle PivotNone (unless stiff)If needed: minimal PTFEOver-lubrication
Rope PathNEVERN/AAny product

➡️ Pro Tip: Wipe excess lubricant with a microfiber cloth. Residue attracts dirt.

🔍 Post-Cleaning Inspection & Storage

  1. Function Test:Move handle: Should snap back smoothly.Check cam: Must rotate freely without grating.
  2. Visual Check:Cracks on body/handle? → Retire immediately.Deep grooves in rope slots? → Measure depth (replace if >1mm).Corroded springs? → Replace spring kit.
  3. Storage: Keep in ventilated bag/box away from UV light, chemicals, and humidity.

❌ Deadly Cleaning Myths Debunked


MythFactRisk
"Soak in vinegar removes rust"Acid corrodes aluminum pivotsSudden axle failure
"WD-40 loosens sticky cams"Attracts grime; degrades plasticsCam seizure mid-rappel
"Grease reduces friction"Creates gummy buildup locking mechanismDelayed 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.


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