RIDGID HC-450 Manual Del Usuario página 12

HC-450/HC-300 Hole Cutting Tools
7. Mount the base in the proximity of the place to be cut.
To do so, place the base on top of the workpiece. The
front edge of the base is 1
centerline. (Figure 14)
1 9 /
"
16
40mm
Figure 14 – HC-300 Chuck Centerline
8. Turn crank handle fully counterclockwise to make
sure the hook is completely lowered and aligned with
the mark in casting.
9. Hook the chain into the base latch.To do so, pull the
chain slightly to compress the spring mechanism.
Once the chain is latched into hook, the spring tension
keeps the chain engaged. Use the screw mecha-
nism to fully tighten the chain. (Figures 15 & 16)
NOTE! Completely lower hook until it reaches the casting
marks. Failure to do so will result in inadequate
travel to properly tension the chain.
10
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9
/
" inches from the chuck
16
Ridge Tool Company
Figure 15 – Hooking the Chain
NOTE! If the hole location is on the bottom or side of the
pipe, rotate the HC-300 to the desired location be-
fore tightening the swivel handle.The unit is de-
signed to drill in any position.
Figure 16 – Tightening Chain
NOTE! The HC-300 features a spring loaded hooking
mechanism that allows for easier tool pre-set-
ting. Always tighten the chain using the swivel
handle when the exact location of the cut is de-
termined.