Global Industrial G3999 User manual

Operating Instructions, Parts List, Warranty, & Warranty Repair Center
IMPORTANT! Read carefully before operating this tool. Failure to operate any power tool
properly can result in personal injury and/or property damage!
Free Speed (RPM) ………………..…..15,000
Air pressure (PSI) ……………..…………..90
Hose Size (ID) …………………...……..… 3/8”
Air Inlet (NPT) ………………………..…... 1/4”
Disc Size …………………………………………..2”
Avg. Air Consump.(cfm).………………… 3
Overall Length ……….………................ 3.7”
Weight (Lbs) …….…….. …..………...…... 1.5
Safety
1. Always use impact type sockets that are designed for impact wrenches.
2. Always wear approved eye protection.
3. Have throttle in “off” position when connecting to air supply.
4. Disconnect tool before performing service, changing accessories, or when not in use.
5. Always be in a safe working distance from others when using tools.
6. Keep tools clean and oiled for best and safest performance.
7. Follow instructions for lubricating and changing accessories.
8. Do not wear loose fitting clothing and remove watches and rings.
9. Use proper hose and fitting. Never use quick change couplings attached at tool.
10. Keep proper footing and balance at all times.
11. Never carry too by the hose. Keep hoses from heat, oil, and sharp edges. Check hoses
for weak or worn condition before each use, making certain that all connections are
secure.
Lubrication
Lubricate the tool daily with a good grade of air tool oil. The oil can be applied directly into
the air inlet of the tool and then run the tool. A rust inhibitor oil is acceptable for air tools.
Air Supply
Tools of this class operate on a wide range of air pressure. It is recommended that air
pressure of these tools measure 90 PSI at the tool while running free. Higher pressure and
unclean air will shorten the tool’s life and may create a hazardous condition.
Water in the airline will cause damage to the tool. Ensure that the air tank is drained daily
Clean the air inlet filter screen on at least a weekly basis. The recommended hookup
procedure can be viewed in the illustration below.
Model # G3999
2” Miniature Rotary Action Sander

The air inlet, used for connecting air supply, has standard 1/4” NPT American Thread.
Line pressure should be increased to compensate for unusually long air hoses (over 25 feet).
Minimum hose diameter should be 1/4” I.D. and fittings should have the same inside
dimensions.
Maintenance
Other factors outside the tool may cause loss of power or erratic action. Reduced
Compressor output, excessive drain on the air line, moisture or restriction in air pipes or the
use of hose connections of improper size or poor condition may reduce air supply. Grit or
gum deposits in the tool may cut power and may be corrected by cleaning the air strainer
and flushing out the tool with gum solvent oil or an equal mixture of SAF#10 oil and
kerosene. If outside conditions are in order and tool is out-of-warranty, clean, reassemble,
and re-lubricate, or take tool to any air tool service center. For tools in warranty period, send
tool direct to Warranty Center.

No.
Part No.
Description
No.
Part No.
Description
1
TSAG006R3V
2" Rolok Disc Holder
20
TS70610
O-Ring
2
TS93102
Spindle
21
TS93121W
Housing
3
TS93103
Clamp Nut
22
TS93122A
Pin
10
TS70624
Ball Bearing
23
TS93123A
Trigger
11
TS93111
Front End Plate
24
TS93124
Exhaust Deflector
12
TS70623
Spacer
25
TS12025
O-Ring
13
TS93113
Rotor
26
TS93126
Bushing
14
TS70520
Rotor Blade (5)
27
TS93127
Throttle Seat
15
TS93115
Cylinder
28
TS93128
Throttle Valve
16
TS70521
Steel Ball
29
TS93129
Throttle Spring
17
TS93117
Rear End Plate
30
TS93130
Air Inlet
18
TS70517
Ball Bearing
31
TS93131W
Comfort Grip
19
TS93119
Regulator
32
TS93132
Wrench 12mm
PLEASE READ FOLLOWINGS CAREFULLY BEFORE OPERATING:
1) Always wear Safety Goggles to guard against eye injuries caused by flying particles.
2) Light density, non-detergent lubricant oil (i.e.#60) recommended.
3) Use air working pressure of 0-90 PSIG, regular speed: 15,000 RPM.
Model # G3999
2” Miniature Rotary Action Sander

Notice
90% of all Air Tool problems are caused by moisture in air lines
This problem can be avoided by using Air Tool Lubricant (See
“Lubrication” & “Air Supply” section of this manual)
FAILURE TO OIL can void your warranty
Warning: Dust created by power sanding, sawing, grinding, drilling, and other activities
contains particles and 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
To reduce your exposure to these chemicals, work in well ventilated areas with approved
safety equipment specially designed to filter out microscopic particles.
One Year Limited Warranty
GLOBAL Industrial air tools carry a limited 1 year warranty to be free from defects in material
and workmanship for one year from date of purchase. We will repair or replace at our
discretion any defective part or unit which proves to be defective in material or
workmanship during this 1 year period. The foregoing obligation is GLOBAL sole liability
under this or any implied warranty, and under no circumstances shall it be liable for any
incidental or consequential damages.
Repairs required by abuse, misuse, damage, or repair attempts (other than GLOBAL
Industrial) are not covered by this warranty.
For warranty claims and returns, please contact GLOBAL
Industrial at 1-800-645-2986 or speak to your local sales
representative. Be certain to include your name, address, and
purchase date, and description of the suspected defect.
11 Harbor Park Drive, Port Washington, NY 11050
Phone: [phone]