OPERATION
The
U.S.SAWS TC-7 Stand-up Edger
features:
• Powered by Metabo’s W24-230, 15 amp electric grinder
• U-shaped frame puts the operator in a comfortable working position
• Adjustable outrigger wheel for various head pressure
• Forward control handle features comfortable shock absorbing grip
Start-up
5.1
Select the appropriate cup wheel or polishing pad for the task at
hand.
5.2
Make sure the cup wheel is properly mounted to the grinder. The
TC-7 comes with a matched set of blade Adapter Nuts with the letters “B-
CV” stamped on the side of the “arbor nut” and the letters/numbers “C-1”
stamped on the side of the “Blade Nut”. This set of “Adapter Nuts” is
made to a specific height to accommodate the standard cup wheel height.
Low profile or thread on cup wheels may not work unless spaced properly.
The grinding surface of the cup wheel and the edge of the dust shroud
should be at the same level and touch the surface at the exact same time.
If the cup wheel protrudes from the shroud, dust will escape. If the cup
wheel sits too deep in the shroud, it will require excess downforce and
make the machine uncontrollable.
5.3
Make sure the trigger is in the unlocked position and plug the
cord into your extension cord. It is recommended to use a cord that is 10
gauge and less than 50 ft long. We realize this is not always possible but
don’t use a 200 foot 16 gauge cord if theres an outlet 20 ft from where
your working. To long of a cord will eventually burn the grinder out.
5.4
Attach your dust collector hose to the hose port on the dust
shroud. By OSHA regulations, you must use a vacuum with 175+ cfm.
5.5
Hold the front handle firmly but don’t apply downforce yet. Hold
the trigger handle firmly, press the safety lock on the trigger forward, and
then squeeze the trigger to start the grinder. The grinder will immediately
start to full speed so be ready to control the machine.
5.6
Keep the machine moving. If you stop moving, you will leave a
mark in the floor. Most professionals prefer to make small overlapping
circles to finesse the surface to the desired profile.
5.7
Once you are comfortable, you may choose to lock the trigger in
the ON position. NEVER take your hand off the trigger handle.
Pitch Control
5.8
The Front Handle will pivot from side to side allowing the cup
wheel to have higher pressure downforce on the right or left. The operator
should never elevate one side of the cup wheel, just apply pressure in
different areas as needed. The operator feeling is similar to using a hand
grinder with a Loop Handle. This is especially important on wavy slabs.
5.9
The Rear Pitch Control Handle is under the trigger and can be
lifted up on to angle the front of the grinder down. This is mainly used
when there is a slight curl to the slab where it meets a wall, to ensure that
the cup wheel is preparing the surface all the way to the edge of the wall.
Do not pull up with excessive pressure. The operator will be able to feel
the front of the TC-7 pull to the left if too much input is applied to the Rear
Pitch Control Handle.
Polishing & Use of the variable speed controller
5.10
To install the variable speed controller, use two self-tapping
screws to attach it to the frame just in front of the rear control handle.
5.11
Plug the control handle cord into the speed controller and the
speed controller into your extension cord.
5.12
It is advised to run the grinder at the highest speed possible to
achieve your desired results. To low of a speed will cause excessive heat
in the grinder and cause damage.
6
Surface Prep
Division
P: 877-817- 6687 F: 813-621-7125
Visit us at www.ussaws.com
5.0 OPERATION
5.13
It is advised to not apply excessive downforce while polishing.
The speed controller comes equipped with a 20 amp fuse and if you are
constantly blowing fuses, your pushing down too hard.
5.14
It is advised to not use a metal bond cup wheel with the speed
controller. The high drag caused by a diamond cup wheel can damage
the speed controller. It can be safely done, but you can’t apply a lot of
downforce.
Steel backing Pad
5.15
The TC-7 Polishing package comes with a rigid steel backing
pad and it is superior on this machine than a flexible one.
5.16
Install the “E&F” marked arbor nut set. Thread the “F” nut on
to the shaft of the grinder. Put the shaft of the “E” nut through the arbor
hole of the pad and thread on to the already installed “F” nut. Do not
use excessive force to tighten.
Tips for use
5.15
Practice. This machine has a learning curve to use and some
operators will be more comfortable than others. After a few minutes, an
experienced hand grinding technician should feel just as comfortable
with this machine as a hand held grinder.
5.16
Don’t hunch over. The curve in the frame is there to allow you
to stand upright and not have to reach out to the controls. This machine
was built for the average height man (5’7” to 6’2”)
5.17
Keep your jobsite clean. You will be much more satisfied with
this machine if you have a clean floor and are not running over cords,
hoses, rocks, broomsticks, buckets, empty red bull cans, and whatever
else your guys, (and the electricians and plumbers) leave all over the
ground.