Metabo BAS 317 Precision WNB, Operating Instructions Manual

21

ENGLISH

cancer when inhaled: always use a
dust collector when working indoors
(required air speed at the saw's suc-
tion connector 

t

20 m/s).

A

Caution! 
Operation without a dust col-

lector is only possible: 

outdoors; 

for short-term operation 
(up to 30 minutes maximum); 

with dust respirator. 

If no dust collector is used chips will
accumulate, which need to be
removed periodically. 

Connect dust collector or industrial vac-
uum with a suitable adaptor to the dust
extraction port. 

6.8

Tensioning the Band Saw 
Blade

A

Danger!

Too much tension can cause

the band saw blade to break. Too little
tension can cause the driven band
saw wheel to slip and the band saw
blade to stop.

1.

Raise upper blade guide fully (see
"Operation"). 

2.

Checking the blade tension: 

Check tension by pushing with a
finger, halfway between table and
upper blade guide, against the
side of the blade (the blade
should flex not more than 1-2
mm). 

Check adjustment at the blade
tension indicator. The scale indi-
cates the correct adjustment in
dependence on the band saw
blade width.

3.

Correct tension if necessary: 

turning the setting knob 

(67)

counter-clockwise increases the
blade tension. 

turning the setting knob 

(67)

counter-clockwise reduces the
blade tension. 

6.9

Connection to Power 
Mains

B

Danger! High voltage

x

Operate the saw in only in a dry
environment. 

x

Operate the saw only on a power
source matching the following
requirements (see also "Techni-
cal Specifications"): 

mains voltage and system fre-
quency conform to the voltage
and frequency shown on the
machine's name plate;

fuse protection by a residual
current operated device (RCD)
of 30 mA sensitivity; 

outlets properly installed,
earthed and tested; 

three-phase outlets with neu-
tral wire installed; 

3

Note:

Check with your local Electricity

Board or your electrician if in doubt
whether your house service connection
meets the requirements. 

x

Make sure the power supply
cable is out of the way, so that it
does not interfere with the work
and does not pose a tripping haz-
ard or will get damaged. 

x

Protect the power supply cable
from heat, aggressive liquids and
sharp edges. 

x

Use only rubber-insulated exten-
sion cables of sufficient lead
cross section (3 x 1.5 mm

2

, for

machines with 3-phase motor:
5 x 1.5 mm

2

).

x

Do not pull on the power supply
cable to unplug. 

A

Changing the direction of rota-
tion (3-phase motor only):

Depending on phase sequence the
band saw blade may turn in the wrong
direction. This can cause the work
piece being tossed away when
attempting to cut. Therefore, always
check direction of rotation after every
connection to the power supply.

If the direction of rotation is incorrect,
the electrical connection must be
changed by a qualified electrician! 

1.

When the saw is assembled and all
safety devices are installed, connect
it to the power supply. 

2.

Start saw briefly and turn OFF
immediately again. 

3.

Check the band saw blade's direc-
tion of rotation: 

in the cutting area

it must run from the top down-
wards.

4.

If the band saw blade turns in the
wrong direction, unplug the power
supply cable at the saw. 

5.

Have the electrical connection
changed 

by a qualified electrician

! 

A

Danger! 
 To reduce the risk of personal

injury as much as possible, the fol-
lowing safety recommendations
should be observed when operating
the saw. 

x

Use personal protection gear: 

dust respirator; 

hearing protection; 

safety goggles. 

x

Cut only one work piece at a time. 

x

Always hold the work piece down
on the table. 

x

Do not jam any work pieces. 

x

Do not try to slow the band saw
blade down or stop it by pushing
the work piece against the saw
blade from the side. 

x

If the type of work requires, use
the following: 

push stick – if distance rip
fence – band saw blade 

d

120 mm; 

work support – for long stock,
which would otherwise fall off
the table on completion of the
cut;

dust collector; 

an appropriate jig when cutting
round stock, to keep it from
turning;

a suitable guide for firm sup-
port when cutting thin stock
layed on edge. 

x

Before starting work, check to
see that the following are in
proper working order: 

band saw blade; 

upper and lower blade guard. 

x

Replace damaged parts immedi-
ately. 

x

Assume correct work position
(the band saw blade's teeth must
point towards the operator). 

67

7.

Operation