Scheppach CSP2540 Mode D'emploi page 51

Pruning (Fig. K)
m CAUTION
Prune branches only at or below shoulder height.
Never cut branches above shoulder height. Leave
that kind of work to a professional.
For the first cut (Pos. 1), cut 1/3 of the way into the
lower part of the branch.
Then cut all the way through the branch with the sec-
ond cut (Pos. 2). The third cut (Pos. 3) is a top cut
with which you separate the branch from the trunk at
a distance of 2.5 to 5 cm.
WORKING WITH TREE SERVICE CHAIN-SAWS
FROM A ROPE AND HARNESS
This chapter sets out working practices to reduce
the risk of injury from tree service chainsaws when
working at height from a rope and harness. While it
may form the basis of guidance and training litera-
ture, it should not be regarded as a substitute for for-
mal training. The directives contained in this annex
are only practical examples. National laws and regu-
lations must always be strictly observed.
General requirements working at height
Operators of tree service chainsaws working at height
from a rope and harness should never work alone.
A competent ground worker trained in appropriate
emergency procedures should assist them. Opera-
tors of tree service chainsaws for this work should
be trained in general safe climbing and work position-
ing techniques and shall properly equipped with har-
nesses, ropes, strops, karabiners and other equip-
ment for maintaining secure and safe working posi-
tions for both themselves and the saw.
Preparing to use the saw in the tree
The chainsaw should checked, fuelled, started and
warmed up by the ground worker before it is sent up
to the operator in the tree.
The chainsaw should be fitted with a suitable strop for
attaching to the operator's harness (Fig.
a) choke the strop around the attachment point on
the rear of the saw (R1, Fig. R);
b) provide suitable karabiners to allow indirect (i.e.
via the strop) and direct attachment (i.e. at the at-
tachment point on the saw) of saw to the opera-
tors harness;
c) c) ensure the saw is securely attached when it is
being sent up to the operator;
d) ensure the saw it secured to the harness before it
is disconnected from the means of ascent.
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Thanks to the ability to attach the chainsaw directly
to the harness, the risk of damage to the equipment
when moving around the tree is reduced. The supply
to the chainsaw must always be disconnected if it is
attached directly to the harness. The saw should only
be attached to the recommended attachment points
on the harness. These may be at mid-point (front or
rear) or at the sides.
Where possible attaching the saw to centre rear mid-
point will keep it clear of climbing lines and support its
weight centrally down the operator's spine (Fig. N).
When moving the saw from any attachment point to
another, operators should ensure it is secured in the
new position before releasing it from the previous at-
tachment point.
Using the chainsaw in the tree
An analysis of accidents with these saws during tree
service operations shows the primary cause as being
inappropriate one-handed use of the saw. In the vast
majority of accidents, operators fail to adopt a secure
work position which allows them to hold both handles
of the saw.
This results in an increased risk of injury due to:
• not having a firm grip on the saw if it kicks back;
• a lack of control of the saw such that it is more liable
• losing control from insecure work position resulting
Securing the work position for two-handed use
To allow the operator to hold the saw with both hands,
they should as general rule, aim for secure work posi-
tion where they are operating the saw at:
• hip level when cutting horizontal sections;
• solar plexus level when cutting vertical sections.
Where the operator is working close into vertical
stems with a low lateral forces on their work posi-
tion, then a good footing may be all that is needed to
M): maintain a secure work position. However as opera-
tors move away from the stem, they will need to take
steps to remove or counteract the increasing lateral
forces by, for example, a re-direct of the main line via
a supplementary anchor point or using an adjustable
strop direct from the harness to a supplementary an-
chor point (Fig. O).
Gaining a good footing at the working position can be
assisted by use of a temporary foot stirrup created
from an endless sling (Fig. P).
Starting the saw in the tree
When starting the saw in the tree, the operator should:
a) apply the chain brake before starting;
to contact climbing lines and operators body (par-
ticularly the left hand and arm)
in contact with the saw (unexpected movement dur-
ing operation of the saw)
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