Komatsu Utility 395F6001, Operation & Maintenance Manual

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PRECAUTIONS TO BE TAKEN DURING WORK
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2.4.8 WORKING IN WINDY WEATHER CONDITIONS
DANGER
• Do not use the machine to lift large loads when the weather is windy.
If the wind reaches degree 5 on the Beaufort scale (on dry land) and the boom must be extended as
much as possible, the resulting sail effect may cause the overturning of the machine. DO NOT USE the
machine if the wind reaches or exceeds the limit indicated above.
• The table below can be used to determine the maximum wind allowed with reference to a surface of less than 1
m² for each ton lifted; if the exposed surface is larger than 1 m²/ton, interrupt work.
WIND FORCE TABLE (THE BEAUFORT SCALE)
Intensity of the wind Speed Effects
Force Description m/sec km/h Land based specification
0 Calm 0–0.2 1 Smoke raises vertically
1 Light air 0.3–1.5 1–5 Direction of wind shown by smoke drift, but not by wind vanes
2 Light breeze 1.6–3.3 6–11 Leaves rustle, ordinary vanes moved by wind
3 Gentle breeze 3.4–5.4 12–19
Leaves and small twigs in constant motion; wind extends light
flags
4 Moderate breeze 5.5–7.9 20–28 Dust and paper sheets are raised, twigs and small branches move
5 Fresh breeze 8–10.7 29–38 Small trees sway, water ripples.