Snorkel TL49J-01-sn008562+ - Manual (Page 13)

9 TL49J 513868-000
8. DO NOT operate the machine unless all four outriggers are down and in full contact
with the ground. The machine must be level and the wheels lifted visibly clear of the
surface before the booms are raised.
9. DO NOT move the machine with the
basket raised and never allow cage
or booms to slew into the path of
oncoming vehicles.
10. DO NOT operate the machine if the wind speed exceeds 12.5 m/s. Be aware that, when
working near high buildings or structures, shielding and funnelling effects may cause high
wind forces on days when the nominal wind speed in the open is low. Wind speed can
either be measured from the work platform with a hand held anemometer or estimated
using the Beaufort Scale.
BEAUFORT WIND SPEED SCALE
The Beaufort Scale of wind force is accepted internationally and is used in communicating
weather conditions. It consists of numbers 0 - 12, each representing a certain strength of
velocity of wind at 10m (33ft.) above ground in the open.
Approximate corrections for wind speeds at other heights are:
□ 2m subtract 30%;
□ 3m subtract 20%;
□ 6m subtract 10%
□ 15m add 10%;
□ 30m add 25%
Beaufort
Scale
M/Sec Ground Conditions
3 3.5-5 Leaves and small twigs in constant motion; wind extends light flag.
4 6-8 Raises dust and loose paper; small branches are moved
5 9-10 Small trees in leaf begin to sway; crested wavelets on inland waterways.
6 11-13 Large branches in motion; umbrellas used with difficulty.
7 14-17 Whole trees in motion; inconvenience felt when walking against wind.
8 18-21 Breaks twigs off trees; generally impedes progress.
9 22-24 Slight structural damage occurs (chimney pots and slates removed)
WARNING NOTICES