Overload Protection - RIDGID HC-2 Manual Del Usuario

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PROBLEM SOLVING DRY AND WET DRILLING
1. Diamond core does not cut
-
Core is glazed or not sufficiently dressed: redress with
sharpening stone.
-
Problem with bit or machine: check and replace when
necessary.
2. Diamond drill does not cut or drills too slowly
-
RPM too high or too low: check speed.
-
Insufficient feed pressure.
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Diamond bit is glazed or polished: use sharpening stone.
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When dry drilling: material is too hard to drill dry.
-
When wet drilling: a lot of steel is being drilled: continue
slowly, give the core bit the time to drill through the steel.
3. Diamond core jams in the hole
-
Operator is not holding the drill straight enough.
-
The drilling debris is not cleared regularly and is jamming
the core bit: use dust extractor.
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Diamond bit is bent (damaged): check and replace.
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Wet drilling: inadequate water supply.
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Motor clutch set is worn out: replace.
4. Diamond core is wearing too quickly
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Incorrect drilling speed: check RPM. Try next faster speed.
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Excessive feed pressure: reduce force.
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Wet drilling: insufficient water.
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Wet drilling: Material is very abrasive and/or heavily
reinforced: use special bit.
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Drilling machine not held steadily.
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Drilling machine is hammering: don't use the hammering
system for core drilling.
5. Segments of the diamond core are losing side clear-
ance
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Drilling machine not held steadily.
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Bit spindle or adapters are damaged.
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Core bit is damaged or bent.
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Insufficient water.
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Material is too abrasive: use special bit.
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Dry drilling: Cutting/drilling dust is building up and
jamming the core: regularly clear the hole or use the dust
extraction.
6. Segment loss
-
Core bit doesn't run concentric.
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Drilling/cutting debris is building up and is jamming the
core.
-
Material cannot be drilled dry.
-
Core bit is being forced too hard: reduce feed pressure.
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Insufficient cooling water.
7. Segments are folding in or out
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Excessive pressure.
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Too high speed.
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The drilling machine is left on "hammer".
8. Core is lodged within the diamond bit
-
The heat has expanded the material which is now lodged in
the bit: let it cool down, eventually use water.
-
The core has broken within the diamond bit: remove core.
-
The bit has lost its side clearance: check that the bit,
machine etc. is running concentric. If necessary retip the
diamond bit.
9. No water flowing out of the bore hole (wet drilling)
-
Water swivel, drill spindle or water supply are blocked; free
the blockage.
-
Material within bit is blocking the water: remove core from
the bit.

OVERLOAD PROTECTION

Mechanical:
Thermal:
HC-2W,
Electronic:
RB-3W
Red LED:
Clutch will disengage if the
drill bit is blocked.
If unit is continuously
overloaded the thermal
overload will disconnect
the supply.
Electronic protection will
disconnect supply if unit is
overloaded. After unit has
stopped remove load and
restart.
This lights up when you
overload the motor.
3 3

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