Care And Maintenance; Chain Tension; Maintaining And Sharpening The Chain; Lubricating The Chain - Protool ISP 330 EB Originalbetriebsanleitung

11 Care and maintenance

WARNING
Before replacing the tool cutting set, unplug the
machine.
Caution! The chain cutting edges can cause in-
jury.
Caution! The cutting edges of the guide bar can
cause injury.
Wear protective gloves!
The ISP 330 EB insulation saw cutting tool set's
chain links are 3/8" apart, and their thickness is
1.3 mm. Other tool sets can be used only with ex-
plicit approval from the manufacturer. The spacing
of the chain links must be identical to the spacing
of the chain sprocket and to the spacing of the
guide bar pulley.
The complete cutting tool set consists of:
a) chain sprocket [8-3]
b) guide bar [2-4]
c) chain [2-3]
The cutting tool set's service life depends mainly
on lubrication and chain tension. For this reason
the chain tension must be checked and adjusted
both before and during work.

11.1 Chain tension

With the cover of the chain sprocket [2-1] slightly
released, rotate the chain adjustment wheel [2-9]
in the direction of the + arrow until the bottom part
of the chain hugs the guide bar of the chain, as
shown in Fig. [10]. Then tighten the chain sprocket
cover fi rmly [2-1] by turning the fastening wheel
[2-2] clockwise. Check the chain for correct tension
by slightly pulling the bottom part of the chain, as
shown in Fig. [10]. Once released, the chain must
return to the initial position and closely cling to
the guide bar.
Chains that have been tightened while hot must
be released when the work is fi nished. When the
tightened chain has cooled, high tension occurs
due to its shrinkage, which might cause damage
to the machine!
11.2 Maintaining and sharpening the
chain
The chain must be sharpened if the sawdust is too
fi ne, see Fig. [11].

11.3 Lubricating the chain

The oil reservoir capacity is 240 ml. To avoid heavy
wear, the chain and its guide bar must be continu-
ously lubricated during operation of the machine.
Lubrication is provided by an oil feed pump, which
delivers an optimal amount of oil into the lubrica-
tion groove in the guide bar. It is very important to
check the oil reservoir level and the chain lubrica-
tion function before you start working. If the oil
level [1-8] drops to the bottom indicator on the oil
gauge, the oil must be replenished.
Recommendation:
Use only the Protool oil intended for chain saw lu-
brication. The use of used oil or any oil not intended
for chain lubrication is prohibited. Before opening
the oil reservoir, carefully clean the area around
the oil cap! Sawdust and chips that could get into
the reservoir may block the oil channels, which can
lead to a serious breakdown in chain lubrication!
Due to their composition, biodegradable oils for
chain lubrication have reduced lubricating ability,
and a prolonged break in the operation of the ma-
chine might make the inner lubrication channels
sticky. Therefore follow manufacturer recommen-
dations!

11.4 Maintaining the guide bar

The one-sided wear of the guide bar can be prevent-
ed by turning it after each time the chain is sharp-
ened. Worn-out outer guide surfaces (Fig. [9b])
are considered a normal operational wear. Use a
fi ne, fl at fi le to remove burred edges. The inner
guide surfaces (Fig. [9a]) become worn due to in-
suffi cient lubrication, incorrect chain lubrication, or
improper working procedure. The guide bar must
be replaced!
Under no circumstances can the chain links touch
the bottom of the guide bar channel. If the chain
touches the bottom of the channel, the guide bar
is so worn that it must be replaced. The lubrication
ports and the guide bar channel (groove) must be
clean at all times.

11.5 Maintaining the chain sprocket

Most diffi culties with the chain are caused by in-
correct chain tightening or late replacement of the
chain sprocket. A worn chain sprocket can very
quickly damage the good portion of an expensive
cutting tool assembly. Don't be stingy about re-
placing the chain sprocket! It is recommended that
you replace the chain sprocket upon the second
replacement of the chain or earlier.
11.6 Replacing the chain and
guide bar
Put the machine in the basic position and disman-
tle the chain sprocket cover [2-1] by rotating the
fastening wheel [2-2] counter clockwise, as shown
in Fig. [2]. Stretch the chain [2-3] over the chain
sprocket [2-8] and remove it together with the
guide bar [2-4]. Put a new chain [2-3] on a (new)
guide bar [2-4] and insert it into the machine.
Maintain the proper position of the cutting teeth,
according to the direction of rotation. The direction
of rotation is indicated by an arrow on the body of
the machine, and under the chain sprocket cover
there is a symbol showing how the chain should
be mounted. Place the chain's guide links into the
chain sprocket teeth [2-8] and turn using the chain
adjustment wheel [2-9] (when rotated clockwise
as seen from above, the pin moves upwards and
releases; when rotated counter clockwise as seen
from above, the pin moves downward) so that the
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