CDM1H HAND-HELD CORE DRILL — TROUBLESHOOTING
TABLE 4. CORE DRILL TROUBLESHOOTING
SYMPTOM | POSSIBLE PROBLEM | SOLUTION | |
|
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| |
| Steel bar or stone, etc. is | Immediate turn SWITCH OFF. | |
| caught between core and BIT. | ||
Bit is stuck. |
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|
| ||
Excessive wear, bit tip has | Try to rotate BIT in both directions using spanner to lift it out. | ||
| |||
| become flush with shank. | ||
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| ||
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| |
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| Replace BIT. | |
|
|
| |
| Waste water is contaminated | Immediately check the waster water. Adjust the pressure on so as | |
| with steel chip, DRILL is cutting | ||
| not to overload MOTOR. | ||
| rebar. | ||
|
| ||
|
|
| |
| Bit is worn. | Immediately check BIT for abrasion. Replace BIT. | |
|
|
| |
Drilling is slow in normal | Diamond is not exposed on TIP | Immediately check BIT for abrasion. Dress BIT. | |
surface. | |||
operation. |
| ||
|
| ||
| Chips are deposited on BIT | Immediately check BIT for abrasion. Increase water feed pressure. | |
| Dress or Brush BIT with a wire. | ||
| surface. | ||
|
| ||
|
|
| |
| Steel chips are scorched on BIT | Immediately check BIT for abrasion. Remove steel chips. | |
| surface. | ||
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| ||
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