Universal Tool UT9912 User manual

Recoilless Needle Scaler
UT9912
Description
The Universal Tool model UT9912 Recoilless Needle Scaler features a patented vibration dampening system. The low
vibration and high blow frequency results in less operator fatigue and increased production. This versatile tool is used on
flat and irregular surfaces for removing weld flux, paint, rust, scale and to resurface concrete.
PL-2079 FPMC
Read Operating Instructions
Always become familiar with all the instruc-
tions and warnings before operating any
pneumatic tool.
Always Wear Approved Eye Protection
Impact resistant eye protection should meet
or exceed the standards as set forth in the
United States ANSI Z87.1, Occupational and
Educational Eye and Face Protection. Look
for the marking Z87.1 on your eye protection
to insure that it is an approved style. For
further information, ANSI Z87.1, Occupa-
tional and Educational Eye and Face
Protection, is available from the American
National Standards Institute, Inc., 11 West
42nd Street, New York, NY 10036.
Hearing Protection is Recommended
Hearing protection should be used when the
noise level exposure equals or exceeds an 8
hour time-weighted average sound level of
85dBA. Process noise, reflective surfaces,
other tools being operated nearby, all add to
the noise level present in your work area. If
you are unable to determine your noise level
exposure, we recommend the use of hearing
protection.
Avoid Prolonged Exposure
to Vibration
Pneumatic tools can vibrate during use.
Prolonged exposure to vibration or very
repetitive hand and arm movements, can
cause injury. Stop using any tool if discom-
fort, tingling feeling or pain occurs. You
should consult your physician before
resuming use of the tool.
90 PSIG Maximum
This tool is designed to operate at an air
pressure of 90 pounds per square inch
gauge pressure (90 PSIG) maximum, at the
tool. Use of higher air pressure can, and may
cause injury. Also, the use of higher air
pressure places the internal components
under loads and stresses they were not
designed for, causing premature tool failure.
The air supply should be clean and dry,
preferably lubricated. For best results, drain
the moisture from your compressor daily.
PLEASE READ AND FOLLOW ALL WARNINGS
Specifications
Number of needles ....................................................... 18
Needle size ......................................................... Ù" X 7"
Blows per minute ..................................................... 9000
Stroke length ............................................................... ¼"
Vibration level ....................................................... 3 m/s2
Overall length .......................................................... 12¼"
Weight ................................................................. 4¼ lbs.
Air inlet ............................................................... ¼" NPT
Hose size ............................................................. Ú" I.D.
Average air consumption ....................................... 3 CFM
Maximum operating pressure ................................ 90 PSI
Universal Tool
A Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter, Florida 33458
Toll Free 1-800-327-9403
WARNING: SOME DUST CREATED BY POWER SANDING, SAWING,
GRINDING, DRILLING, AND OTHER CONSTRUCTION ACTIVITIES
CONTAINS CHEMICALS KNOWN TO CAUSE CANCER, BIRTH
DEFECTS OR REPRODUCTIVE HARM. SOME EXAMPLES OF THESE
CHEMICALS ARE:
LEAD FROM LEAD-BASED PAINTS
CRYSTALLINE SILICA FROM BRICKS, CEMENT AND OTHER
MASONRY PRODUCTS
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 AWELL VENTILATED
AREA AND WORK WITH APPROVED SAFETY EQUIPMENT SUCH AS
THOSE DUST MASKS THAT ARE SPECIALLYDESIGNED TO FILTER
OUT MICROSCOPIC PARTICLES.

UT9912
Installation
The UT9912 Recoilless Needle Scaler is designed to operate
with 90 PSIG. Lower pressure (below 90 PSIG) will reduce
performance of the tool while higher air pressure (over 90
PSIG) raises the performance of the tool beyond its rated
capacity and could cause serious damage to tool and operator.
Always use clean dry air. Excessive moisture and dirt will
greatly reduce the life of any air tool. 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 fitting are the correct size and tightly secured.
Recoilless Needle Scaler
2
Lubrication
1. An automatic in-line filter-regulator-lubricator is recom-
mended to increase tool life and keeps the tool operating
properly. The in-line lubricator should be regularly
checked and filled with Marvel air tool oil or equivalent.
Proper adjustment of the in-line lubricator is performed by
placing a sheet of paper next to the tool exhaust ports and
holding the throttle open approximately 30 seconds. (The
lubricator is properly set when a light stain of oil collects on
the paper). Excessive amounts of oil should be avoided as
it will decrease tool performance.
2. 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 environ-
ment.
3. Recommended lubricants:
Use Marvel Air Tool Oil or any other high grade turbine oil
containing moisture absorbents, rust inhibitors, metal
wetting agents and an EP (extreme pressure) additive.
Operation
After properly setting up the tool, air lines, air supply and work
area, the scaler is ready to use. The UT9912 does not operate
like conventional needle scalers, tool operators should take
time to familiarize themselves with the feel and operation of this
design for best results.
This model operates two to three times higher than the fre-
quency of conventional scalers. The higher frequency results
in smoother operation and a smoother finished surface than
with conventional scalers.
Scaling efficiency depends on the force applied to the scaler.
For efficient material removal on most applications, applying an
intermediate force will give the best results.
Lubricate tool regularly and properly. Always wear safety
equipment during operation. Check condition of tool and
needles before each use. Avoid free air operation of this tool,
always apply tool to work before pressing throttle. This tool is
designed for 1/8" X 7" long needles, although different lengths
will work as well.
Caution - Never operate scaler without the
needles installed and pressed against the work surface.
Doing so may result in personal injury or damage to the
tool.
Warning - This tool may produce flying
objects. Always wear eye protection during operation.
Installing Replacement Needles
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 accidently engaged.
1. Push in the front assembly (Ref. No. 1) and twist to the
open slot, then pull needle assembly (Ref. Nos. 1-4) out of
housing.
2. Remove old needles (Ref. No. 4) from holder (Ref. No.
3) and replace with new needles, making sure the needle
heads fit into the countersunk holes in needle holder.
3. Slide needles through spring (Ref. No. 2) and front
nosepiece (Ref. No. 1). Check that driver (Ref. No. 6) and
spacer (Ref. No. 5) are placed inside housing correctly.
4. Lubricate entire needle assembly with a light coating
of oil. Reassemble by sliding assembly into the housing, line
up slot, then depress and twist to lock in place.
5. Lubricate tool through inlet with air tool oil and run in a
protected area to check operation.

1Front assembly 101510 1
2Spring 6NRV-95-2 1
3Needle holder 6NRV-95-3 1
4Needles 109020 (Set of 19) 1
5Spacer 6NRV-95-4 1
6Driver 6NRV-95-8 1
7Housing 101280 1
8Support ring 6NRV-95-6 1
9Spring 6NRV-95-9 1
10 Piston 6NRV-95-12 1
11 Piston ring 6NRV-95-13 1
12 Limit ring 6NRV-95-14 1
13 Ball 6NRV-95-17 1
Replacement Parts List for UT9912 Recoilless Needle Scaler
Ref. Description Part # Qty Ref. Description Part # Qty
Recoilless Needle Scaler
UT9912
FPMC
3
14 Retainer ring 6NRV-95-19 1
15 Cylinder 6NRV-95-18 1
16 Piston ring 6NRV-95-22 1
17 Rear housing 260080 1
18 Lever assembly 120450 1
19 O-Ring 115120 1
20 Valve stem 120460 1
21 O-Ring 115145 1
22 Valve spring 118090 1
23 O-Ring 115135 1
24 Valve cap 120470 1
25 Pin D847031 1

UT9912
Recoilless Needle Scaler
FPMC
Recommended Air Line Set-Up
Trouble Shooting
Tool failure, loss of power or erratic action may be caused by factors outside the tool. Make the following checks:
1. Check air pressure. For rated performance, 90 PSIG air pressure is required AT THE TOOL with tool operating. A
drop in air pressure may be caused by lowered compressor output, excessive drain on the air line or use of hose or
connections of improper size (or in poor condition).
2. Check for wet or dirty air in system. Wet air tends to wash lubricant away from tool and may rust and corrode the
components. Dirt and foreign matter in the air supply will impede action of the tool and cause damage to the internal
mechanisms. If dirt or water has entered the tool, flush with Marvel air tool oil or equivalent.
Limited Warranty
Universal Tool warrants its tools to be free from defects in material and workmanship for one year from the date of
purchase. This warranty does not apply to tools which have been abused, misused, modified or repaired by someone
other than Universal Tool or its authorized service centers. If a Universal Tool proves defective in material of workman-
ship within one year after purchase, return it to any authorized service center or to Universal Tool, freight prepaid. Please
enclose your name, address and adequate proof of purchase date with a brief description of the defect. Universal Tool
will, at its option, repair or replace defective tools, free of charge. Repairs or replacements are warranted as described
above for the remainder of the warranty period. Universal Tool's sole liability and your exclusive remedy under this
warranty is limited to repair or replacement of the defective tool. There are no other warranties expressed or implied and
Universal Tool shall not be liable for incidental, consequential or special damages, or any other damages, costs or
expense of repair or replacement as described above.
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