DoAll C-3028NC Boxed, Instruction Manual

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39
TROUBLE SHOOTING (Continued….)
7. Saw band being used is incorrect.
8. Coolant mixture is too weak, or incorrect coolant is
being used.
9. The saw band is not properly tensioned
10. Decrease feed pressure to “break in” a new saw
band on its first few cuts.
BLADE TEETH STRIPPING
1. Increase band speed or decrease feed pressure.
2. Check for chip welding, or a chipped blade tooth
lodged in the cut.
3. Faulty stock is being used: check for heavy scale,
inclusions, hard spots, etc.
4. Check for a worn, or improperly adjusted band
brush.
5. Check for vibrations caused by loose vise jaw
clamping against the work piece.
6. Check for worn saw blade inserts and/or carbide
back‐up or roller back‐up.
7. Coolant is not being applied correctly.
8. Check for incorrect saw band tension being used.
9. Saw band pitch may be too coarse for thickness of
stock section.
SAW BAND BREAKAGE
1. The saw band is dropped into the work piece due
to incorrect saw head feeding rate.
2. Increase band speed being used and/or decrease
feed force.
3. Check for stock not being held firmly by the vise
jaws.
4. Check for incorrect adjustment of the saw guide
inserts and carbide back‐up guides.
5. Check for insufficient coolant flow.
6. Use a finer pitch saw band.
7. Check for incorrect saw band tension.
SAW BAND IS NOT RUNNING TRUE AGAINST THE
SAW GUIDE BACK‐UP BEARINGS / CARBIDE BACK‐
UPS.
1. Examine the back‐ups. Replace them if they are
chipped or worn more than 0,5 mm.
2. Have a DoALL service representative check
machine alignment.
3. Check for worn saw guide pivot bolts.
4. Left saw guide arm is loose, or not positioned close
enough to the stock.
INACCURATE CUT‐OFF
1. Check for worn or dull blade teeth.
2. Check for a hard spot in the material being cut.
3. Band brush is not properly cleaning the blade
teeth.
4. Increase band speed or decrease feed force.
5. Check for dirty coolant. Replace if necessary.
6. Check for crooked stock (results in straight but not
square cuts).
7. Left saw guide arm is loose, or not positioned close
enough to the stock.
8. Saw band pitch choice in incorrect.
9. Check for incorrect saw band tension.
10. Check for incorrect adjustment of inserts, back‐up
bearing, or worn pivot bolts.
11. Check machine alignment (contact DoALL).
12. Check for coolant not being supplied evenly to
both sides of the saw band.
SURFACE FINISH OF CUT‐OFF PIECE IS TOO ROUGH
1. Check for vibration while sawing.
2. Check for a damaged saw band.
3. Use a finer pitch saw band.
4. Increase band speed and/or decrease feed rate.
5. Check the saw band back‐up guides for wear.
Replace them if necessary.
6. Check for incorrect saw band tension.
CUTTING RATE IS TOO SLOW
1. Increase the feed rate.
2. Increase band speed and/or feed rate.
3. Use a coarser pitch saw band.
STOCK FEEDS ERRATICALLY
1. Check for low hydraulic system oil level.
INDEX WON’T MOVE FORWARD
1. Check to see if the vise solenoid is operating.
VISES WON’T TRANSFER AFTER AN INDEX
1. Check for faulty operation of the index forward
limit switch on the index vise base.
2. Check to see if the vise solenoid is operating.