27
TROUBLE SHOOTING
Repair and adjustment procedures should be
made by experienced maintenance personnel,
or by a DoALL service representative.
Reference to the machine’s electrical and
hydraulic schematics will be helpful.
MACHINE WON’T START
1.
Make sure the disconnect switch is in the “ON”
position.
2.
Reset the
All Stop
pushbutton (rotate clockwise).
3.
Make sure the bandwheel doors are closed.
4.
Check the fuses/circuit breakers for tripping or faulty
operation.
5.
Check the overload reset on the drive motor starter.
Starting and stopping the machine a number of
times in quick succession, or an overload, will trip
the starter overload switch. Locate and correct
the trouble, then push the reset on the overload
switch.
6.
Check the transformer for faulty operation.
MACHINE VIBRATION
1.
Check for unbalanced bandwheels.
2.
Check for worn bandwheel tires.
3.
Check for worn or unbalanced band drive belt.
4.
Check for an incorrectly shimmed machine base.
SAW BAND VIBRATION
1.
Incorrect band speed is being used.
2.
Choice of blade pitch is incorrect.
3.
Stock is not being clamped firmly to the worktable
and/or by optional vise jaws.
4.
Check for worn or improperly adjusted saw guide
inserts (If supplied).
5.
Check for a worn saw guide back-up bearing.
6.
Check for a loose post. Adjust the cover plate if
necessary.
7.
Check for a poor weld in the saw band.
8.
Check for an incorrect saw band tension setting.
SAW BAND IS CUTTING INACCURATELY
1.
Check for worn blade teeth. Inserts that are too
wide for the blade will damage the teeth set.
2.
Check for scale on the stock.
3.
The saw band may be too wide if a radius is being
cut.
4.
Check for incorrect saw band or insert alignment.
5.
Incorrect band speed is being used.
6.
Mist lubricant (if supplied) is not being applied
evenly to both sides of the saw band.
7.
Check for an incorrect saw band tension setting.
8.
The upper saw guide is not located close enough
to the stock.
9.
Check for worn or loosely-adjusted saw guide
inserts.
PREMATURE BAND BREAKAGE
1.
Saw band weld is defective.
2.
Feed force and/or band tension is too high.
3.
Saw guide inserts or rollers are not guiding the saw
band properly.
4.
Band pitch is too course, use finer pitch blade.
5.
Band speed is too low.
6.
Wrong coolant type is being used.
EXCESSIVE INSERT AND BLADE WEAR
1.
Inserts or saw guide rollers are adjusted too tightly
on the saw band.
2.
High band speed is causing friction (using roller
saw guides may be adviseable). Increase coolant
volume to better lubricate the saw band.
3.
The back-up bearing may need replacement.
4.
Check for incorrect saw band tension setting.
Summary of Contents for ZV-3620
Page 1: ...ZV 3620 Serial No 565 03101 to Band Sawing Machine Instruction Manual...
Page 6: ...2 MACHINE DIMENSIONS Continued INCHES 03 MILLIMETERS 1 mm FLOOR PLAN With HMD HYDRAULIC TABLE...
Page 9: ...5 MACHINE FEATURES FRONT VIEW...
Page 10: ...6 MACHINE FEATURES Continued FRONT VIEW With HMD HYDRAULIC TABLE...
Page 11: ...7 MACHINE FEATURES Continued REAR VIEW...
Page 12: ...8 MACHINE FEATURES Continued REAR VIEW With HMD HYDRAULIC TABLE...
Page 25: ...21 LUBRICATION DIAGRAM HMD TABLE OPTION REAR VIEW...
