GB
12
CAUTION: Drilling operations are very stressful to the motor and at the end of the cut, the motor
temperature will be very hot, always run the motor at no load the temperature returns to a normal
range before shutting off.
RESHARPENING A GLAZED BIT
If the bit becomes glazed, resharpen is by dressing with an appropriate alumina oxide or silicon carbide
dressing stone. Simply drill into the stone as many times as necessary to restore its cutting performance.
VIBRATION TROUBLESHOOTING
If vibration occurs and it is not caused by embedded steel, stop drilling to find the cause and remedy.
CAUTION: Do not operate with vibration or there will be serious hazard and the diamond core bit
will surely be destroyed.
Vibration is usually caused by:
1.
A bit with too much runout
SOLUTION:
Replace bit.
2.
A bit with diamond segments broken off
SOLUTION:
Replace bit.
3.
Shifted base or loose gibs
SOLUTION:
Retighten mountings or adjust gibs as needed.
MAINTENANCE
Every 50 hours of operation blow compressed air through the motor while running at no load to clean out
accumulated dust. Always check for a damaged power supply cable, check for loose fasteners and always
keep alert for unusual noises and vibration when operating.
WARNING: Never operate a damaged machine. Always tag a damaged machine and take it out of
service until repairs can be made.
CAUTION: This machine is equipped with an oil bath gearbox. To avoid leakage of lubricating oil,
whenever the gearbox is opened, the o-ring seal must be replaced with a new one.
CAUTION: If the gear oil is found to be leaking out, have the machine repaired by a qualified service
center immediately. Running without sufficient oil will lead to certain damage of the gearbox
.
Maintenance which should be performed by an authorized service center, include the following:
•
Replace water seals as needed.
•
Replace the carbon brushes as needed
•
Change the gear oil about every 100 hours of operation
•
Replace the clutch discs and spring as needed.
Summary of Contents for DM10
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