CDM1H CORE DRILL • OPERATION AND PARTS MANUAL — REV. #7 (10/12/17) — PAGE 21
TROUBLESHOOTING
Troubleshooting (Core Drill)
Symptom
Possible Problem
Solution
Bit is stuck.
Steel bar or stone, etc. is caught
between core and BIT.
Immediate turn SWITCH OFF.
Excessive wear, bit tip has become fl ush
with shank.
Try to rotate BIT in both directions using spanner
to lift it out.
Replace BIT.
Drilling is slow in normal operation.
Waste water is contaminated with steel
chip, DRILL is cutting rebar.
Immediately check the waste water. Adjust the
pressure on so as not to overload MOTOR.
BIT is worn.
Immediately check BIT for abrasion. Replace BIT.
Diamond is not exposed on TIP surface.
Immediately check BIT for abrasion. Dress BIT.
Chips are deposited on BIT surface.
Immediately check BIT for abrasion. Increase
water feed pressure. Dress or Brush BIT with a
wire.
Steel chips are scorched on BIT surface. Immediately check BIT for abrasion. Remove steel
chips.
Summary of Contents for CDM1H
Page 22: ...PAGE 22 CDM1H CORE DRILL OPERATION AND PARTS MANUAL REV 7 10 12 17 WIRING DIAGRAM ...
Page 23: ...CDM1H CORE DRILL OPERATION AND PARTS MANUAL REV 7 10 12 17 PAGE 23 NOTES ...
Page 26: ...PAGE 26 CDM1H CORE DRILL OPERATION AND PARTS MANUAL REV 7 10 12 17 NAMEPLATE AND DECALS ...
Page 35: ...CDM1H CORE DRILL OPERATION AND PARTS MANUAL REV 7 10 12 17 PAGE 35 NOTES ...