G* The workpiece moves or deformes 22-23-24
H* The cycle don’t start 23
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 adjustments screw of the maximum pressure valveis loosened
13 = the maximum pressure valveis broken
14 = Quality of the hydraulic oil (consumed, too much liquid)
15 = There is some water in the oil and / or there is some condensate in the tank
16 = Too high circuit pressure (over 20 BAR)
17 = The hydraulic pump locked (seizure, expansion, oxidation)
18 = The circuit taps are closed
19 = The cooling filters are obstructed or must be cleaned
20 = The electropump does not work (see 3-4-5-9-24)
21 = The tank is empty or dirty
22 = Excesive cutting feed
23 = The vice is not closed enough (or is too closed), the piece is not rightly clamped
24 = The control LUBRICANT OFF is active (pos. 22 / dr. RI0055 for models SH-E, SHI-E)
12.2 - 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;
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