RIDGID RB-3W - Manual (Page 5)

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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.
- Diamond bit is glazed or polished: use sharpening stone.
- 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.
- Diamond bit is bent (damaged): check and replace.
- Wet drilling: inadequate water supply.
- Motor clutch set is worn out: replace.
4. Diamond core is wearing too quickly
- Incorrect drilling speed: check RPM. Try next faster speed.
- Excessive feed pressure: reduce force.
- Wet drilling: insufficient water.
- Wet drilling: Material is very abrasive and/or heavily
reinforced: use special bit.
- Drilling machine not held steadily.
- Drilling machine is hammering: don’t use the hammering
system for core drilling.
5. Segments of the diamond core are losing side clear-
ance
- Drilling machine not held steadily.
- Bit spindle or adapters are damaged.
- Core bit is damaged or bent.
- Insufficient water.
- Material is too abrasive: use special bit.
- 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.
- 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.
- Insufficient cooling water.
7. Segments are folding in or out
- Excessive pressure.
- Too high speed.
- 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
HC-2W,
RB-3W
Mechanical: Clutch will disengage if the
drill bit is blocked.
Thermal: If unit is continuously
overloaded the thermal
overload will disconnect
the supply.
Electronic: Electronic protection will
disconnect supply if unit is
overloaded. After unit has
stopped remove load and
restart.
Red LED: This lights up when you
overload the motor.