970_Manual_2009
GUARANTEE
Blade Cover
Blade Cover
Fasteners (2)
Power Unit
Locking Screw
Depth Adjusting Label
Depth Adjusting Screw
Depth Locking Screw
Dust Collector Bag
Bag Collar
and Supporter
Power Unit Pivot Pin
Front Guide Wheel
Rear Wheel
Center Wheel
Wheel Bearing
Snap Ring
5mm Allen® Wrench
Sliding Axle
& Fasteners
2.5mm Allen® Wrench
Printed by: HF
FORM F1970-Rev.04/09
36
35
35
35 28
35
30 31
12
34
17
35
18
19
11
09
08
07
971
30 31
35 27
35
16
05
06
on
c ti
CAUTION WHEN ADJUSTING CUTTING
•USE
DEPTH. CUTTING TOO DEEP MAY CAUSE
35
30 29
35 31
KICKBACK HAZARDS:
13
20
14
15
Milpitas, CA 95035 TEL: (408) 946-6100
10
CRAIN CUTTER CO., INC.
e P r ot e
WARNINGS:
26
22
25
23
WARNING:
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth
defects or other reproductive harm. Some examples of
these chemicals are:
 lead from lead-based paints,
 crystalline silica from brick, cement and other masonry
product, and
 arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often
you do this type of work. To reduce your exposure to these
chemicals: work in a well-ventilated area, and work with approved safety equipment, such as those dust masks that are
specially designed to filter out microscopic particles.
• Th
Order No. Description
1970-18
1970-19
1970-20
1970-21
1970-22
1970-23
1970-24
1970-25
1970-26
1970-27
1970-28
1970-29
1970-30
1970-31
1970-34
1970-35
1970-36
120 Volts Power Unit
Power Unit
Brushes Set (2)
Brush Cap Set (2)
Power Cord (not shown)
Blade Spacer
Clamp Nut
Blade Screw
Clamp Nut Box Wrench
Blade Screw T-Wrench
Blade Guard
Blade Guard
Fasteners (3)
Torsion Spring
Groover Base
Pressure Pad
Pressure Pad
Fasteners (2)
Upright Plate
Upright Plate
Fasteners (2)
03
21
DATE OF MFG.
CRAIN
Ey
No. 970 POWER GROOVER
24
This Crain No. 970 Power Groover is guaranteed
to be free of defects in workmanship and quality of
materials for a period of 6 months.
Any parts of this groover found defective subject to
the guarantee will be replaced at no charge. Credit
in full or part cannot be extended by the distributor,
nor will a new groover be given as a replacement or
loaner. Groovers subject to this warranty must be
accompanied by same, returned freight PREPAID to
Milpitas, CA, and must be in assembled condition.
S
ink afe
1970-01
1970-02
1970-03
1970-04
1970-05
1970-06
1970-07
1970-08
1970-09
1970-10
1970-11
1970-12
1970-13
1970-14
1970-15
1970-16
1970-17
No. 986
•
ty
For starter grooves or
short seams, such as doorways, the hand groover is
Pull Hand
best used (Fig. 7). Using a
Groover
straight edge as a guide,
Crain No. 955
position the hand groover
to cut the seam in the exact center. The tool cuts either
by pulling or pushing but works best when pulling.
No. 985
INSTRUCTION
MANUAL
r
Wea
HAND GROOVER:
Fig. 7
No. 955
No. 987
Order No. Description
Fig. 6
To start the groover,
you must make a
starter groove with
a hand groover at
least as long as the
STARTER
distance from the
GROOVE
SEAMLINE
front guide wheel to
the back guide wheel (Fig. 6). It is best to make the
starter groove close to a wall, so you can first run the
groover a short distance towards a first wall, then turn
the groover around and run towards the opposite wall.
Set the back wide-edged guide wheel of the groover in
the starter groove, and the front thin-edged guide wheel
in the seamline. Check to make certain the blade is over
the center of the starter groove. Turn on the groover
and slowly plunge to depth. Push forward slowly along
the seamline, making certain the front guide wheel
stays in the seamline. Continue the groove as close to
the wall as possible. Reducing hand pressure on the
handle lifts the blade out of the cut. Turn the groover off
only when the blade is out of the cut. For your safety,
it is always best to wait for the blade to stop before
removing the tool from the groove.
02
MAKING THE GROOVE:
02
The blade is trapezoidal in shape. The deeper the
groove, the wider the groove. Use caution not to cut
a groove wider than your welding thread.
REPLACEMENT PARTS AND
ORDERING INFORMATION
Pressing down on the handle causes the blade to
plunge downward. Keep downward pressure on the
handle, and keep debris off the pressure pad, or inaccurate depth of cut may result.
Crain No. 955 Pull Hand Groover: Most often used at
the end of the seam where the Power Groover cannot
reach or at the cove walls.
Crain No. 985 Quarter Moon Knife: Used for trimming
the excess welding rod flush to the flat floor’s surface,
after the weld has cooled.
Crain No. 986 Trim Guide: Helps to minimize concave
seams and is most often used in the two-pass method.
Crain No. 987 Pressure Roller: Used to roll the vinyl
welding rod into the groove in awkward areas, such
as coved wall.
01
being stopped by the pressure pad below. The longer
the end of the depth adjustment screw is extended,
the less deep the groove will be, and vice versa.
OTHER USEFUL VINYL WELDING TOOLS
03
DEPTH ADJUSTMENT: continued
THE BLADE TO CONTACT THE SUBFLOOR
AND COULD EVEN CAUSE SUDDEN, POWERFUL KICKBACK OF THE GROOVER TOWARDS
YOUR BODY. KNEEL TO THE SIDE OF THE
TOOL.
the depth locking knob be•Tighten
fore making a groove to make certain
that cutting depth is controlled.
GROOVER SHOULD BE PUSHED IN
•THIS
FORWARD DIRECTION ONLY. Do not pull
backward towards yourself.
handle firmly for complete con•Grip
trol while in use.
use, keep hands away from the
•In
front and underside of the tool at
all times.
OPERATING INSTRUCTIONS:
This groover is designed to track in the seamline of
solid vinyl or linoleum floors to cut a trapezoidal groove
for welding. The groover is not designed for use on
other materials such as hardwood or steel.
SAFETY INSTRUCTIONS:
Wear safety glasses, ear plugs, and a dust mask
when using this groover.
Grip handle firmly for complete control while in use.
Use caution when adjusting the cutting depth. Cutting too deep may cause the blade to contact the
subfloor. This may cause damage to the blade,
the vinyl flooring to be installed, and may even
cause sudden, powerful kickback of the groover
towards your body. Kneel to the side of the tool
while making a groove.
Tighten the depth locking knob before making
a groove to make certain that cutting depth is
controlled.
Use groover on uniform, flat areas only, and in a
straight line along a straight vinyl seam only. The
groove is only accurate when the tool is pushed
forward. Do not pull backward towards yourself.
A test groove and test weld on scrap is highly advisable ON EVERY JOB before attempting to groove
the actual floor. From time to time, the front and
rear wheels may require adjustment especially
after blade changes. If the groove is not centered
over the seam line, adjustment is necessary. See
instructions under “Wheel Adjustment”.
Follow the flooring manufacturer’s recommendations with respect to the depth and shape of the
groove that is necessary. Check the depth of cut
on scrap material on every job. See instructions
under “Depth Adjustment”.
Use of the carbide blade on a metal-impregnated
safety floors will result in faster blade wear, and
may cause sparks. Make certain that flammable
gasses are not present when using this tool.
In use, keep hands away from the front and underside of the tool at all times.
Do not remove from the groove until the blade stops.
GUARDS, DUST BAG, RETURN SPRING:
Do not use the tool without functional blade guards,
return springs, and dust bag attached. Some solid
vinyl safety floors contain metal chips. Failure to
maintain blade guards or dust bag may result in dust,
debris, and/or metal chips being ejected in the direction of the user.
The return spring of the groover is for your safety. It
causes the groover to lift out the groove and the blade
to be retracted into the guard automatically. If it wears
out or becomes damaged, replace immediately.
DANGEROUS ENVIRONMENTS:
Keep work area clean and dry; clutter invites accidents.
Do not use on damp or wet floors, as this results in an
electrocution hazard. This groover may throw sparks.
Make sure no flammables are present.
ACCIDENTAL STARTING:
To avoid accidental starting, do not carry the tool
while plugged in, and don’t carry it with a finger on
the switch.
CORD ABUSE AND EXTENSION CORDS:
Never carry the groover by the cord or yank the cord
to disconnect from an outlet. Keep cords away from
heat, oil, and sharp edges. If the cord or strain relief
is cut or damaged, replace immediately.
Avoid using long extension cords, as these cause some
loss of power. To keep the saw from overheating, use
a heavy duty extension cord with these minimum wire
sizes. 25' = 16 gauge 50' = 14 gauge wire
DOUBLE INSULATED:
This groover’s electric motor is constructed with
two separate layers of electrical insulation. A motor
built with this insulation system does not need to be
grounded. As a result, this saw is equipped with a
two prong plug without a ground pole.
OPERATION:
BLADE CHANGE:
The blade on your groover is factory inspected for
flatness and proper shape on the teeth. From time
to time, especially when used on metal-impregnated
safety floors, the blade’s teeth may wear, producing
just the guide wheels:
Fig. 1
DUST
COLLECTOR
BAG
FRONT WHEEL
CARBIDE
TIPPED
BLADE
BLADE SCREW
(Left handed
thread)
BLADE
SPACER
BLADE CLAMP
NUT
BLADE COVER
BLADE COVER SCREW
REAR WHEEL
CLAMP NUT
BOX WRENCH
(PROVIDED)
BLADE SCREW
T-WRENCH
(PROVIDED)
a smaller or irregular groove. Keep constant watch
BLADE
COMPONENTS
over the shape andDESCRIPTION
depth ofOFthe
groove.
Blades can
be replaced or resharpened as necessary.
Fig. 2
To change the blade,
first unplug the groover.
Remove the blade cover
by removing the three
cover screws (Fig. 1).
Place the clamp nut
box wrench on the hexshaped boss of the blade
clamp nut (Fig. 2). This
Unplug saw AND Remove
WrenchES before starting.
allows you to hold the
blade clamp nut from rotating. Insert the blade screw
T-wrench on the blade screw and turn clockwise to
unscrew. (Note: the blade screw is a left-hand thread.)
The blade may now be removed. When replacing the
blade, make certain the blade spacer is mounted first
on the spindle, then the blade, then the clamp nut.
Tighten down the blade screw by turning counterclockwise, and replace the blade cover.
WHEEL ADJUSTMENT:
Fig. 3
The groover is factorycalibrated so that the
center line of the blade
is in line with the center
lines of the front and rear
2.5mm
guide wheels. From time
ALLEN®
to time, especially after a
SET SCREW WRENCH
blade change, the guide
wheels may become out of calibration. If the groove
does not run down the center of the seam, or the
groove becomes too wide, perform the following to ad-
Fig. 4
BLADE
REAR
Unplug the groover.
GUIDE
Each wheel has a set
FRONT
screw which holds it in
GUIDE
position. Loosening a
set screw allows a wheel
to be slid inward towards
Unplug saw. Remove Allen®
Wrench before starting.
the base or outward
away from the base. Both the front and rear guide
wheels must align with the center of the blade (Fig. 4).
After adjustment, tighten both set screws to prevent
the wheels from moving.
Sometimes adjustment requires several tries. Check
for proper alignment by eye, and then verify with a test
cut on scrap material.
DEPTH ADJUSTMENT:
Unplug the groover. Follow
Fig. 5
the flooring manufacturer’s recommendations
for the shape and depth
of the groove. Absent
recommendations, a
good guideline for depth
DEPTH
is to at least 1/2 to 2/3 of DEPTH
ADJUSTING
LOCKING
the material thickness. SCREW
SCREW
Use caution not to adjust
the depth of cut too deep. GROOVE DEPTH GUIDELINE:
GROOVE TO 1/2 TO 2/3 OF
Contact with the subfloor
MATERIAL THICKNESS
may damage the blade,
damage the floor, or may cause sudden and forceful
kickback of the groover towards your body.
The groover’s depth can be adjusted from zero to approximately 5 mm in depth by turning the large depth
adjustment screw at the back of the blade housing.
First, loosen the depth locking screw (black) (Fig. 5).
Then, turn the depth adjustment screw clockwise to
decrease the depth of cut, and counterclockwise to
increase the depth of cut. One full turn increases or
decreases the depth by .80 mm, and each line on the
label corresponds to a .10 mm change in depth. Once
depth is set, tighten the depth locking screw. Do not
attempt to make any groove without the depth locking
screw firmly tightened, or too deep of cut may result.
The depth adjustment on this groover works by the
end of the depth adjustment screw contacting and
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement