IMET GBS 218, Instructions For Use Manual, Page: 24 / 35

TRADUCTION OF THE ORIGINAL INSTRUCTIONS FOR USE
GBS 218 / AutoCut ED.2010eng rev.00
24/35
part concerns the inconvenients that can be found
by checking the blade and / or the cut pieces.
If your problem is not included in the forseen ones
or you need the presence of qualified technicians,
please get in touch with the manufacturer or the
reseller by keeping in evidence this instruction book
.
21.1 - DEFECTS CAUSED BY THE MACHINE
Inconvenients
Check
A* The band electric motor does not work
3-4-5-9
B* The electronical/electric panel does not light on
6-7-8-9
C* The coolant is not sufficient
12-13-14-15
D* The workpiece moves or deformes
16-17
LIST OF THE PARTS THAT MUST BE
CONTROLLED
1 = Plug is right inserted in the socket
2 = Main switch
3 = The motor is burnt or demaged
4 = Electric supply is not right
5 = Transmission blocked between blade and blade
arbor
6 = Fuses on the primary of the transformer
7 = Fuses on the secondary of the transformer
8 = Transformer demaged or burnt
9 = Connection of the supply cables
10 = Oil level in the tank of the hydraulic unit
11 = Loss from pipes and/or connections
12 = The circuit taps are closed
13 = The cooling filters are obstructed or must be
cleaned
14 = The electropump does not work (see 3-4-5-9-
24)
15 = The tank is empty or dirty
16 = Excesive cutting feed
17 = The vice is not closed enough (or is too
closed), the piece is not rightly clamped
21.2 - DEFECTS OF THE BAND / CAUSES /
SOLUTIONS
In case of broken teeth, broken blades or short
blade life, lay down the broken band on the floor
and check the body and teeth defects; look for
them in the following table and read the solution of
the cutting problem
1. PREMATURE AND EXCESSIVE TEETH WEAR
AND TEAR
- thrust pressure to short: increase it;
- reduce the band wheel speed;
- cooling jet too short;
- improper cooling emulsion;
- uncorrect toothing: use a band with a thicker
toothing:
- improper band-running-in;
- the teeth move towards the opposite cutting
direction; turn the band.
2. BAND VIBRATION
- Increase or reduce the band speed
- dull vibration: incresae the band tension;
- too big teeth for the piece that must be cut;
- the vibration reverberates in the base; reduce the
cutting pressure;
- the vibration could be dued to the high frequency:
increase the speed of the saw frame lowering;
- the material is not rightly locked;
- use a viariable pitch or a positive toothing.
3. BROKEN TEETH
- Too big teeth for the section that must be cut;
- the material is not perfectly locked;
- improper coolant;
- inadequate coolant;
- cutting pressure too high: control the chip;
- too low band wheel speed;
- the grooves are full of cut material.
4. CUTTING SURFACE TOO ROUGH
- Choose a thinner pitch;
- increase the band wheel speed;
- reduce the head lowering;
- measure better the coolant.
5. PREMATURE BAND BREAKAGE
- Too hugh band thickness for the diameter of the
band wheel;
- band guides too open with high speed;
- oncrease or reduce the speed;
- check if the band wheels are defective;
- too big toothing;
- band tension too high; the lying down band rises
on the side;
- saw frame lowering too strong: the band back is
polish and upset;
- The thrust bearings are not aligned with the band
wheels: the lying band curves and the band back is
polish
and upset;
- the band guides are too tight: the lying band
spiralles up as a spring; the more the teeth are
tight, the more the
band twists;
- short coolant.
6. BENT CUTS
- Increase the band tension;
- approach the band guides to the cutting unit;
- the teeth are too thin;
- reduce the cutting pressure.