Pre-Operation Inspection - RIDGID HC-450 Manual

premature failure. Careful evaluation of materials and
methods for the specific service conditions, including
chemical and temperature, should be completed be-
fore any installation is attempted.

Pre-Operation Inspection

WARNING
Before each use, inspect your Hole Cutting Tool and
correct any problems to reduce the risk of serious
injury from electric shock and other causes and
prevent tool damage.
1. Make sure that the Hole Cutting Tool is unplugged
and the ON/OFF switch is in the OFF position.
2. Clean any oil, grease or dirt from the tool, includ-
ing the handles and controls. This aids inspection
and helps prevent the tool or control from slipping
from your grip.
3. Inspect the Hole Cutting Tool for the following
items:
• Inspect the power cord, Ground Fault Circuit Inter-
rupter (GFCI) and plug for damage or modifica-
tion.
• Proper assembly and completeness.
• Broken, worn, missing, mis-aligned or binding
parts. Make sure that the motor assembly moves
smooth ly and freely up and down the posts of
the base assembly. Confirm that the chain and
swivel handle move freely. On the HC-300, con-
firm that the plung er pin functions properly and
retains the motor assembly to the base assembly
(Figure 7).
Figure 4A – HC-450 Warning Label
HC-450/HC-300 Hole Cutting Tools
Figure 4B – HC­300 Warning Labels
• Presence and readability of the warning labels
(see Figures 4A and 4B).
• Any other condition which may prevent safe and
normal operation.
If any problems are found, do not use the hole cut-
ting tool until the problems have been repaired.
4. Inspect the arbor, hole saw and drills to be used with
the Hole Cutting Tool for wear, deformation, break-
age or other issues. Do not use dull or damaged cut-
ting tools. Dull or damaged cutting tools increase
the amount of force required, produce poor quality
cuts and increase the risk of injury.
5. With dry hands, plug the cord in. Test the GFCI in the
electrical cord to insure that it is operating correctly.
When the test button is pushed in, the reset button
should pop out. Reactivate by pushing the reset
button. If the GFCI is not functioning properly, un-
plug the cord and do not use the hole cutting tool
until the GFCI has been repaired.
6. With the Hole Cutting Tool on a stable surface check
the Hole Cutting Tool for proper operation. Keep
clear of the chuck. Move the ON/OFF switch to the
ON position. The motor should start and the chuck
turn counter clockwise viewed from the chuck end.
Inspect the tool for misalignment, binding, odd nois-
es or other unusual conditions. Move the ON/OFF
switch to the OFF position. If any issues are found,
do not use the tool until it has been repaired.
7. After the inspection is complete, with dry hands
unplug the tool.
7