# PNM-9031RV # Lens tilting # Focus down
1. Installation case
- Installed PNM-9031RV near bus stop for city surveillance
2. Symptom
- The set angle of view is not maintained and keep tilting down looking at the ground
3. Cause
- Plastic unit which holds the lens was broken, thus the lens could not be kept at the set position
- It is estimated that external impact was delivered such as breakage due to torque overload or
dropping down
4. Measures
- Use manual tools to prevent torque overload when bolting
- In particular, the fastening part where plastic and metal come into contact with each other is
prohibited from using power too
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