| Instalado a la izquierda | Instalado correctamente |
|---|---|
| 1: Boom recto / Boom plegable 3M | 4: Boom recto / Boom plegable 3M |
| 2: brazo recto/brazo plegable 3.5M | 5: brazo recto/brazo plegable 3.5M |
| 3: brazo recto/brazo plegable 4M | 6: brazo recto/brazo plegable 4M |
| 7: Boom recto≥4,5M/boom plegable≥4M/boom de valla | 8: Boom recto≥4,5M/boom plegable≥4M/boom de valla |