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Operation & Parts Manual
6" Dual Action Sander
Installation
Always use clean dry air. Excessive moisture and dirt will
greatly reduce the life of any air motor. We recommend the
installation of an in-line filter-regulator-lubricator as close to
the tool as possible.
A 3/8" air hose is required up to a length of 8 ft. If more length
is required a 1/2" air hose should be connected to the 3/8"
hose to ensure the tool has the necessary air supply. Be sure
all hoses and fittings are the correct size and tightly secured.
Pre-Operation
Before the tool is connected to the air supply, clear the air
hose of accumulated dust and moisture. Before removing a
tool for service or changing accessories, make sure the air line
is shut-off and drained of air. This will prevent the tool from
operating if the throttle is accidentally engaged.
Operation
Pad Installation - To install pad, turn spindle lock (ref. no. 4),
to right or left to lock pad mounting shaft (ref. no. 11). Screw
sanding pad (ref. no. 8) into position. Turn spindle lock
(ref. no. 4) into position to allow the shaft to spin freely. Failure
to unlock shaft will prevent the orbital sander from operating
properly.
NOTE: THIS TOOL IS NOT DESIGNED TO RUN WITH THE
PAD LOCK IN PLACE. THE PAD LOCK IS TO BE USED
ONLY WHEN ATTACHING AND REMOVING THE PAD.
Let the sander do the work. The normal weight of the tool is
sufficient for efficient sanding. Do not put additional pressure
on the sander. This will only slow down the speed of the pad,
reduce sanding efficiency and put an additional burden on the
motor. Start the sander off the work surface, set it down on the
work surface evenly and move it slowly back and forth in wide,
overlapping areas. When finished sanding, lift it off the work
surface before stopping motor.
Recommended Air Line Set-Up
Start the work with an abrasive grit just coarse enough to
remove high spots and roughness. Follow with additional
sanding using finer grits until the desired finish is obtained.
Never go from a coarse grit to a fine grit in one step. It may be
difficult to remove swirl marks made by coarse abrasives. Use
the finest grits practical for roughing operations and finish by
using successively finer grits.
Caution
- Safety goggles should be worn when
operating the sander to avoid dust and particles from entering
the eyes. Secure work with clamps or vise so both hands are free
to operate tool. Keep proper footing and balance at all times.
Maintenance
Lubrication
An automatic in-line filter-regulator-lubricator is recom-
mended as it increases tool life and keeps the tool in
sustained operation. The in-line lubricator should be regularly
checked and filled with air tool oil. Proper adjustment of the
in-line lubricator is performed by placing a sheet of paper next
to the exhaust ports and holding the throttle open approxi-
mately 30 seconds. The lubricator is properly set when a light
stain of oil collects on the paper. Excessive amounts of oil
should be avoided.
In the event that it becomes necessary to store the tool for an
extended period of time (overnight, weekend, etc.), it should
receive a generous amount of lubrication at that time. The tool
should be run for approximately 30 seconds to ensure oil has
been evenly distributed throughout the tool. The tool should be
stored in a clean and dry environment.
Recommended lubricants: Use Husky air tool oil or any other
high grade turbine oil containing moisture absorbents, rust
inhibitors, metal wetting agents and an EP (extrem
sure) additive.
Model No. H4790
e pres-
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