britech BT 36, Инструкция по эксплуатации

Страница: 36 / 76

36
PETROL CHAIN SAW FOR TREE SERVICE USER MANUAL
8.2 GENERAL RULES
- An operator who works on a high position on a
tree with the aid of ropes and slings must never
be on his own, but must be assisted on the
ground by a second, experienced operator, able
to handle emergencies.
- The operator must be trained to safely climb
trees, to use a working technique suitable for
jobs carried out at heights and must be equipped
with suitable safety sling, ropes and snap-shack-
les, and any other items required to ensure a
stable and safe working position for himself and
the chain saw.
8.3 PRELIMINATY OPERATIONS WHEN US-
ING THE CHAIN SAW ON A TREE
1) The chain saw must be checked, refuelled,
oiled, started and heated by the second opera-
tor on the ground, then the engine must be
switched off before lifting the chain saw on the
tree.
2) The chain saw must be fixed with a snap-
shackle to the operator’s sling by means of a
rope (fig.13).
3) The chain saw must be anchored to the con-
nection point (fig.12 item1) by means of a rope.
4) The sling rope extends beyond the snap-
shackle all the way to the lifting rope on the
ground.
5) Make sure that the chain saw is fixed to the
sling before detaching it from the lifting rope.
Fig 13 shows how to latch on the chain saw
to the operator’s sling.
6) By latching the chain saw onto the sling, the
occurrence of damages to the chain saw when
moving on the tree is reduced.
Always switch the engine off be-
fore latching the chain saw to the
sling.
7) Latch the chain saw onto the sling by using
the hooks provided on the sling, such as on the
sides; when climbing the tree, it is advisable to
latch it onto the rear middle hook to be less cum-
bersome for the operator (see fig.14).
8) To move the chain saw from one hook to an-
other, check that it is firmly latched onto the new
position before unlatching it from the previous
position.
8.4 USING THE CHAIN SAW ON A TREE
When the accidents caused by using this type of
chain saw on trees are analysed, the causes
are identified with working with one hand only;
this technique increases the risks and injuries
caused by:
- incorrectly held chain saw in the event of a kick-
back;
- inadequate control of the chain saw, which may
come into contact with the ropes and with the
operator’s body (left hand and arm);
- loss of chain saw control caused by an unsafe
working position and the ensuing contact with the
chain saw (unforeseen movement when using
the chain saw).
8.5 ENSURE A SAFE WORKING POSITION BY
OPERATING THE CHAIN SAW WITH 2 HANDS
In order to hold the chain saw with both hands,
as a general rule, the operator must try to find a
safe position to use the chain saw:
- at hip level for horizontal cuts;
- at chest level for vertical cuts.
- To carry out work to the tree trunk and with low
side thrusts, the operator must stand in a stable
position in order to work in a safe position.
If the operator needs to move away from the tree
trunk and therefore requires a supporting point,
being suspended by means of ropes between a
safe top anchoring point and the sling may prove
to be a good working position (see fig.15).