Operator’s
Manual
Pentruder
CW630
HF
Chain
Saw
–
Original
instructions
Page
13
Determining
proper
chain
tension
4.2
Connection
to
water
supply
4.3
!
Important!
-
The
HF
‐
power
pack
and
HF
‐
chain
saw
have
to
be
drained
from
water
in
sub
zero
temperatures.
The
HF
‐
chain
saw
is
self
draining
if
put
on
a
flat
surface
with
the
chain
side
down
and
with
the
water
hose
open.
-
Insufficient
water
supply
will
result
in
excessive
wear
to
the
chain,
which
can
lead
to
loss
of
strength
and
chain
breakage,
and/or
damage
to
the
guide
bar
nose
sprocket.
Cooling
water
is
supplied
through
the
HF
‐
drive
system
to
the
Pentruder
CW630.
The
Pentruder
CW630
is
equipped
with
an
efficient
electric
motor
cooling
system.
At
least
4
litres/minute
(1
gpm)
of
cool
water
is
required
to
keep
the
temperature
down
when
maximum
power
is
used
Please
refer
to
the
Operator’s
Manual
for
the
Pentruder
HF
‐
drive
system
being
used
for
information
regarding
water
flow,
pressure,
etc.
for
the
HF
‐
power
pack.
Adequate
water
supply
and
pressure
Minimum
flow:
4
lpm
(1
gpm)
Minimum
water
pressure:
1.5
bar
(20
psi)
Correct
Chain
Tension
All
chains
have
a
tendency
to
stretch
when
used.
Diamond
chains
stretch
more
than
wood
cutting
chains
because
of
the
abrasive
materials
they
are
cutting.
If
the
chain
is
too
tight,
a
lot
of
the
saw's
power
goes
into
turning
the
chain
rather
than
into
the
cut.
In
extreme
over
‐
tightened
cases,
the
saw
may
not
be
able
to
turn
the
chain
at
all.
In
addition,
damage
can
occur
to
the
bar
nose
and
premature
stretch
may
occur.
Chain
Too
Loose
If
the
chain
is
too
loose,
it
could
come
off
the
bar.
When
a
chain
stretches
to
a
point
where
the
drive
links
are
hanging
approximately
12
mm
(1/2
in)
to
18
mm
(3/4
in)
below
the
bar,
it
is
time
to
tension
the
chain.
