Blowing Dust / Sand
- penetration into cases or housings
- change of electrical properties (faulty contacts, change of contact resistance, change of comparative tracking index, etc.)
- jamming or stiffening of movable parts (bearings, axles, pivots, etc.)
- surface abrasion
- damage to optical surfaces
- contamination of lubricants
- obstruction of ventilation inlets/outlets, pipes, filters, openings, etc.