Working With Tree Service Chain-Saws From A Rope And Harness - Alpina C25 Manual De Instrucciones

SAFETY REQUIREMENTS
chains may cause chain breakage and/or kickback.
• Follow the manufacturer's sharpening and main-
tenance instructions for the saw chain. Decreasing
the depth gauge height can lead to increased kickback.
H) CHAIN-SAW OPERATING TECHNIQUES
Always observe the safety regulations and use the most
suitable sawing techniques.
J) RECOMMENDATION FOR THE FIRST-TIME
USERS
Before felling or delimbing for the first time, make sure:
– you have been specifically trained to use this type of
equipment;
– you have carefully read the safety regulations and user
instructions contained in this manual;
– you practise first on logs on the ground or attached to
trestles, in order to get familiar with the machine and the
most suitable cutting techniques.
K) HOW TO READ THE MANUAL
Certain paragraphs in the manual contain particularly sig-
nificant information and are marked with various levels of
highlighting with the following meaning:
NOTE
or
IMPORTANT
formation on what has already been indicated, and aim to
prevent both damage to the machine, and the machine
from causing damage.
WARNING!
the risk of injury to oneself or others.
DANGER!
the risk of serious injury or death to oneself or oth-
ers.
3.1 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 liter-
ature, it should not be regarded as a substitute for formal
training.
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 emer-
gency procedures should assist them.
Operators of tree service chainsaws for this work should
be trained in general safe climbing and work positioning
techniques and shall properly equipped with harnesses,
ropes, strops, karabiners and other equipment for main-
taining secure and safe working positions for both them-
selves and the saw.
These give details or further in-
Non-observance will result in
Non-observance will result in
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 oper-
ator in the tree.
The chainsaw should be fitted with a
suitable strop for attaching to the oper-
ator's harness:
a) choke the strop around
the attachment point on
the rear of the saw (A);
b) provide suitable karabiners to allow indirect (i.e. via the
strop) and direct attachment (i.e. at the attachment
point on the saw) of saw to the operators harness;
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 dis-
connected from the means of ascent.
The saw should only be attached to the recommended at-
tachment 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.
When moving the saw from any attachment point to an-
other, operators should ensure it is secured in the new po-
sition before releasing it from the previous attachment
point.
These can be found on the mid-
point (front or rear) or on the sides.
When possible, fasten the chain-
saw to the rear central midpoint to
prevent it from interfering with the
climbing ropes and make sure it
supports the operator's weight in
the middle, toward the bottom of
the operator's spinal cord.
When moving the chain-saw from one fastening point to
another, it is advisable that operators are sure they are fas-
tened to a new position before unfastening from the pre-
vious fastening point.
Using the chainsaw in the tree
An analysis of accidents with these saws during tree serv-
ice operations shows the primary cause as being inap-
propriate one-handed use of the saw. In the vast majority
of accidents, operators fail to adopt a secure work position
witch allows them to hold both handles of the saw.
7
EN
A