RIDGID HC-300 - Manual (Page 11)

HC-450/HC-300 Hole Cutting Tools
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3. Always keep at least one hand on the Hole Cutting
Tool to stabilize and guide it. Grasp the end of the
chain and pull it snugly around the pipe. Hook the
closest chain pin on the wear plate and firmly tight-
en the swivel handle to hold the Hole Cutting Tool
to the pipe. (See Figure 5.)
4. The base of the HC-450 Hole Cutting Tool includes
a level vial that can be used to align a series of
holes. When the Hole Cutting Tool is placed at the
desired angle, the vial can be rotated to the level
position, and subsequent holes can be made at the
same angle by leveling the Hole Cutting Tool with
the vial. (See Figure 6.)
5. With one hand on the Hole Cutting Tool to stabilize
and guide it, slightly loosen the swivel handle to al-
low final positioning of the tool. Align the pilot drill
with the desired cut location, and firmly tighten the
swivel handle. Do not remove your hands from the
Hole Cutting Tool until you have confirmed that it
is securely attached to the pipe. The Hole Cutting
Tool must be securely and squarely attached to the
pipe to help reduce the risk of hole saw jamming.
HC-300
The HC-300 can be mounted on the pipe either as a
complete unit (similar to the HC-450) or by separating
the base assembly from the tool, mounting the base to
the pipe, and then installing the motor assembly to the
base assembly.
1. With the HC-300 Hole Cutting Tool on a stable,
secure surface, pull the plunger on the back of
the left post (Figure 7) and lift the motor assem-
bly off of the base assembly.
2. Make sure the chain is hanging freely and the swiv-
el handle is fully loosened on the base assembly.
3. Place the base assembly with the V-shaped guides
squarely on the pipe near the location of the cut.
Make sure the chain is not between the pipe and
tool base.
4. Always keep at least one hand on the base assem-
bly to stabilize and guide it. Grasp the end of the
chain and pull it snugly around the pipe. As you
pull on the chain, a spring is compressed at the
attachment end of the chain. Hook the closest
chain pin on the chain hook – the spring tension
will help keep the chain engaged with the chain
hook. Firmly tighten the crank screw assembly to
hold the base assembly to the pipe. (See Figure 8.)
Figure 6 – HC-450 Hole Cutting Tool Level Vial
Figure 7 – Separating the Base and Motor Assemblies
Plunger Pin
Figure 5 – Hooking the HC-450 Chain
Wear Plate
Chain