USand US-PRO Manuale utente

Operator’s Manual

U.S. Patent No. 6,494,772

READ THIS MANUAL

This manual has important information for the use and safe operation of

this machine. Read and understand this manual before starting this

machine. Keep this manual. If you do not follow the instructions, you can

cause personal injury or damage equipment.

For a copy of this manual:

Download from

www.u-sand.com

under Customer Help

Save this manual

November 2014

Contents

OPERATOR SAFETY INSTRUCTIONS................................................................. 3

GROUNDING INSTRUCTIONS .......................................................................... 3

EXTENSION CORDS.......................................................................................... 4

BACKER PAD/DUST SKIRT INSTALLATION ....................................................... 5

INSTRUCTIONS ................................................................................................ 5

TOOLS NEEDED............................................................................................ 5

ROOM SETTING AND FLOOR CHECK ........................................................... 6

CHECKING CONDITIONS OF THE FLOOR ..................................................... 6

OPERATING THE U-SAND® EQUIPMENT ......................................................... 6

STARTING THE SANDING PROCESS ............................................................. 7

ADJUSTING THE HANDLE POSITION................................................................ 8

PROPER STORAGE OF THE POWER SUPPLY CORD.......................................... 8

CLEANING AND STORAGE ............................................................................... 8

US-146 Parts.................................................................................................... 8

US-Pro Parts .................................................................................................. 11

CONSIGNES DE SECURITE OPERATEUR ......................................................... 13

INSTRUCTIONS DE MISE................................................................................ 14

RALLONGES ÉLECTRIQUES ............................................................................ 15

BACKER PAD / INSTALLATION JUPE POUSSIÈRE............................................ 15

INSTRUCTIONS .............................................................................................. 16

OUTILS NÉCESSAIRES ................................................................................ 16

RÉGLAGE chambre et vérifier PLANCHER ................................................. 16

CKING FLOOR ............................................................................................ 16

FONCTIONNEMENT DU U-SAND ® ÉQUIPEMENT ......................................... 17

DÉMARRAGE DU PROCESSUS DE SABLAGE............................................... 17

REGLAGE DE LA POSITION DE POIGNEE........................................................ 18

STOCKAGE DU CORDON D'ALIMENTATION .................................................. 18

NETTOYAGE ET STOCKAGE............................................................................ 18

INSTRUCCIONES PARA EL OPERADOR DE SEGURIDAD ................................. 19

INSTRUCCIONES DE CONEXIÓN A TIERRA..................................................... 20

CABLES DE EXTENSIÓN.................................................................................. 20

BACKER PAD / INSTALACION faldón ............................................................. 20

INSTRUCCIONES ............................................................................................ 21

HERRAMIENTAS NECESARIAS.................................................................... 22

SALA DE AJUSTE Y VERIFICACION DEL PISO .............................................. 22

CONTROL DE CONDICIONES DE LA PLANTA.............................................. 22

OPERACIÓN DE LA U-SAND ® EQUIPO .......................................................... 22

PUESTA EN MARCHA DEL PROCESO DE LIJADO........................................ 23

AJUSTE DE LA POSICIÓN MANGO ................................................................. 24

ALMACENAMIENTO CORRECTO DEL CABLE DE ALIMENTACIÓN.................. 24

LIMPIEZA Y ALMACENAMIENTO ................................................................... 24

LIMITED WARRANTY ..................................................................................... 24

OPERATOR SAFETY INSTRUCTIONS

COMMERCIAL USE

For the safe operation of this machine, read and understand all warnings and cautions.

Look for this symbol:

“WARNING”: If you do not follow the instructions in a WARNING, injury can occur

to you or to other personnel.

“CAUTION”: If you do not read and follow instructions completely, damage can

occur to the machine.

WARNING: You must be qualified for the operation of this machine before using it.

READ THE INSTRUCTION MANUAL.

WARNING: Machines can cause flammable materials and vapors to burn. Do not use this

machine with or near matches,

fuels, grain dust, solvents, thinners, or other flammable materials.

WARNING: Do not use on wet surfaces.

WARNING: Risk of explosion. Floor sanding can result in an explosive mixture of fine

dust and air. Use floor sanding

machine only in a well- ventilated area.

WARNING: Do not allow machine to be used as a toy. Close attention is

Necessary when used by or near children.

WARNING: Use only as described in this manual. Use only manufacturer’s recommended

attachments.

WARNING: Do not use with damaged cord or plug. If machine is not working as it should,

has been dropped, damaged, left outdoors, or dropped into water, return it to the rental center.

WARNING: Do not leave machine when plugged in. Unplug from outlet when not in use

and before servicing.

WARNING: Do not pull or carry by cord, use cord as a handle, close a door on cord, or pull

cord around sharp edges or

corners. Do not run appliance over cord. Keep cord away from heated surfaces.

WARNING: Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.

WARNING: To prevent injury, always remove the electrical plug from the electrical outlet

before changing the sandpaper,

emptying the bag, leaving the machine, or doing any maintenance to this machine.

WARNING: Do not handle plug or machine with wet hands.

WARNING: Do not put any object into vacuum openings. Do not use with any opening

blocked; keep free of dust, lint, hair,

and anything that may reduce air flow.

WARNING: Keep hair, loose clothing, fingers, and all parts of body away from openings

and moving parts.

WARNING: Turn off all controls before unplugging.

WARNING: Do not use machine to pick up flammable or combustible

liquids, such as gasoline, or use in areas where they may be pre sent.

WARNING: To prevent fire explosion when emptying the dust bag:

1. Remove the contents of the dust bag when the bag is 1/3 full.

2. Remove the contents of the dust bag each time you finish using the machine.

3. Do not put the contents of a dust bag into a fire.

WARNING: Do not use machine without proper dust bag. Black Bag with yellow writing

and Fire Lock Logo US-VBAS14.

WARNING: To prevent damage to the power cable, do not let the sandpaper touch the power

cable when the machine is

running. Always lift the power cable over the machine.

GROUNDING INSTRUCTIONS

This machine must be grounded. If it should malfunction or breakdown,

grounding provides a path of

least resistance for electric current to reduce the risk of electric shock. This

machine is equipped with a

cord having an equipment-grounding conductor and grounding plug. The

plug must be inserted into an

appropriate outlet that is properly installed and grounded in accordance

with all local codes and

ordinances.

WARNING: Improper connection of the equipment-grounding

conductors can result in a risk of electric shock. Check with

a qualified electrician or service person if you are in doubt

as to whether the outlet is properly grounded. Do not,

modify the plug provided with the machine-if it will not fit

the outlet, have a proper outlet installed.

This machine is for use on a nominal 120-volt circuit, and has a grounded

plug that looks like the plug

illustrated in sketch A in Figure 1. A temporary adapter that looks like the

adapter illustrated in sketches

B and C may be used to connect this plug to a 2-pole receptacle as show in

sketch B if a properly

grounded outlet is not available. The temporary adapter should be used

only until a qualified electrician

can install a properly grounded outlet (sketch A). The green colored rigid

ear, lug, or the like extending

from the adapter must be connected to permanent grounds such as a

properly grounded outlet box c

over. Whenever the adapter is used, it must be held in place by a metal

screw.

Note: In Canada, use of a temporary adapter is not permitted by

the Canadian Electrical Code

WARNING: Always use this machine with an AC three conductor

electrical system connected to the electrical ground.

Replace any worn, cut, or damaged cords. Replace

damaged plugs, receptacles or connector bodies.

WARNING: Do not cut, remove or break the ground terminal. Do not

try to fit a three-terminal plug into a receptacle or

connector body that does not fit the plug. If the receptacle

or connector body does not fit the plug, have a qualified

electrician make the connection.

WARNING: Do not move the machine over an electrical cord. Always

lift the cord over the machine.

WARNING: To reduce the risk of electrocution, keep all connections dry

and off the ground. Do not touch the plug with wet hands.

EXTENSION CORDS

Use only 3-wire extension cords that have 3-prog grounding-type plugs and

3-pole cord connectors that

accept the plug from the product. Use only extension cords that are

intended for extra-hard service.

These extension cords are identified by a marking such as “S, SO, ST, or

STO”. Use only extension cords

having an electrical rating no less than the rating of the product. DO not use

damaged extension cords.

Examine the extension cords before using, and replace if damaged. Do not

damage the extension cord

and do not pull on any cord to disconnect. Keep the cord away from heat

and sharp edges. Always

disconnect the extension cord from the receptacle before disconnecting the

product from the extension

cord.

BACKER PAD/DUST SKIRT INSTALLATION

1. Use ¾” open end wrench to hold lower shaft and turn backer pad

clockwise to install.

2. HAND TIGHTEN ONLY!

3. Set machine upright on floor.

4. Attach the removable part of the dust skirt (US115-146) to the

lower part of the deck plate so that the skirt just touches the floor.

(if not properly installed the vacuum system may not operate to its

full potential).

INSTRUCTIONS

WARNING:

1. Make sure the Sander switch is in the OFF position before you

plug the unit in.

2. Never change the sandpaper while the sander is plugged in.

3. Check breaker circuit to be used, 20 amp is the minimum

required.

4. Always wear eye protection, ear protection and dust mask while

operating the sander.

5. Empty the vacuum system in an area away from flammable

materials and flame or fire.

TOOLS NEEDED

1. Hammer

2. Pry bar; to remove trim

3. Paint scraper; to scrape corners and hard to reach places.

4. Nail set

5. Vacuum system; using a 1.5” ID vacuum hose to collect dust

created by sanding process.

6. Plastic draping; to cover and isolate work areas.

7. Masking tape

8. Wood filler

9. Mineral spirits and or tack cloths; to remove fine dust particle

prior to coating floor with finish.

ROOM SETTING AND FLOOR CHECK

1. Remove all existing furniture, carpets, floor mats, clutter,

and curtains from the area to be sanded. Sweep the floor

thoroughly.

2. Remove all nails, and metal fasteners that protrude from

the surface to be sanded. These items may damage sanding

pads, sandpaper or prevent effective sanding.

3. Check for cracks and niches in the area to be sanded and

repair damaged areas. Excessive damage may be repaired

with wood filler (allow sufficient drying time). Follow wood

filler manufacture instructions for use.

4. Put dust protection on all doorways and heat vents in the

form of drop cloths and plastic sheets. Vacuum the room

thoroughly.

CHECKING CONDITIONS OF THE FLOOR

Check for condition of floor using one of the following tests and follow

appropriate directions:

Wax Floor:

Place a damp cloth (approx. 18” x 18”) on the floor. Lift after an hour and

check for any cloudy coloration. A white cloudy coloration indicates wax. In

this case, strip the wax using a wax stripper before sanding is attempted.

Excess wax will clog the sandpaper.

Painted Floor:

Chemically remove paint before attempting to sand floor.

Varnished Floor:

U-Sand® equipment will remove most kinds of varnish. Excessive layers of

varnish, however, may require chemical removal before attempting to sand

the floor.

Unfinished Floor:

Start the sanding process with the least aggressive grit as possible,

progressing to the finer grits of sandpaper ranging from 24 grit (the most

aggressive/coarse) 36, 40, 60, 80, 100, 120 grit (less aggressive, coarse). Etc.

OPERATING THE U-SAND® EQUIPMENT

WARNING: Always remove the electrical plug from the electrical outlet

before installing and changing the sandpaper.

Select the paper to start:

Select the least aggressive grit as possible that removes the desired amount

of surface. Too aggressive grits leave swirl marks that are difficult to

remove with finer grits that will be used later. Grits that are not aggressive

enough do not take enough of the surface off and result in more work and a

slower process

Installing Paper:

Sandpaper should be installed by leaning the machine back and placing the

sandpaper on the backer pads (BP6).

Changing Sandpaper:

Paper should be changed when you notice less pull when running the

equipment and see less material being removed by the process (10-15

minutes).

CAUTION: To prevent damage to backer pads, you must change

sandpaper when it becomes loaded or clogged.

STARTING THE SANDING PROCESS

Before operating the machine, make sure the handle adjusting lever is tight.

Empty the vacuum system when full into a metal canister away from your

workspace and other

Flammable materials (this may need done several times during the

process).

Remove the vacuum system from the unit when not in use and empty

contents as instructed above.

STEP 1:

Determine the condition of the floor. We recommend staring with

36 grit (24 grit for severely damaged or heavy polyurethane

floors). Lean the machine back on its handle. Attach the

sandpaper to the backer pads. Sandpaper usage will

depend on the finish to remove, and the amount of wood

that needs to be removed.

STEP 2:

With the U-Sand® equipment in the upright position, turn the

switch on and slowly move the sander over the floor, letting

the machine do the work for you. For new installation it is

recommended to move the machine across the grain, this is

the most effective way to level the floor. (change

Sandpaper when it appears plugged or dull).

Proper Grit Sequence:

24 if needed

36 for leveling

40 sand thoroughly

80 final sanding and clear finish

120 recommended for staining

STEP 3:

After sanding the floor completely, with the first grit, vacuum the floor

thoroughly and change paper to the next finer grit. Continue the sanding

process. Check paper after sanding about a 10’ x 10’ area to see that the

paper is still sanding. Inspect the floor to see if any swirl marks remain. If

swirl marks exist, continue to sand just the area with the higher grit paper

until they are less visible. You should get down close to the floor and view

it from several directions in good light for this inspection.

STEP 4:

Use progressively higher grits. Sand the floor completely. This step will take

less time than the previous grits. Check sandpaper often to make sure it is

clean and effective.

STEP 5:

Inspect the floor thoroughly for scratches or unevenness. Apply the final

finishing grit (usually 120 or 180 grit). At this point, the floor should

become smooth and free of all swirl marks when inspected closely.

STEP 6:

Corners and edges and be sanded with a detail sander or hand scraper. A

paint scraper can be used for hard to reach areas, such as: under radiators,

and in corners. Some hand sanding may be necessary in these remove

places. Inspect the floor thoroughly to determine when you are finished

sanding.

STEP 7:

Vacuum the floor and clean with a tack cloth (available at your local

hardware store). Then apply stain or varnish as desired. Follow

manufacturer’s recommendations for staining and finishing.

STEP 8:

WARNING: Machines can cause Flammable materials and vapors to burn. Do not

use this machine with or near matches, fuels, grain dust, solvents, thinners, or

other flammable materials.

WARNING: To prevent injury always remove the electrical plug from the electrical

outlet before changing the

Sandpaper, emptying the bag, leaving the machine, or doing any maintenance to

this machine.

REMOVING THE DUST BAG:

Unlock the Velcro straps and then remove the dust tube from blower. Empty the bag into a

metal or non-flammable container away from your work area. DO NOT LEAVE DUST

BAG ON THE UNIT WHEN NOT IN USE. Remove from machine when not in use for

two (2) minutes or more and store in a metal container away from flammable objects. DO

NOT TRANSPORT MACHINE WITH DUST BAG ATTACHED. Remove from unit, empty

and carry separately.

ADJUSTING THE HANDLE POSITION

Loosen the black knob (US146-146) and then adjust the handle position as

desired. Tight the black knob once adjusted.

PROPER STORAGE OF THE POWER SUPPLY CORD

Wrap the power cord around the frame of the machine for storage. Then,

adjust the handle to the lowest position and store machine in and upright

position.

CLEANING AND STORAGE

Remove the dust system from the unit. Discard contents away from work

area in a non-flammable area. Wipe the exterior of the unit with a damp

cloth. Leave the last grit of sandpaper on the backer pads for transport and

storage. This will protect the hook and loop of the backer pads.

US-146 Parts

U-SAND FLOOR SANDER

US-146 MODEL

PARTS LIST

November 2014

LS-AS LOWER SHAFT ASSEMBLY

A1 Lower Shaft (US104-146) (1)

A2 Bearings (HW-BRG) (2)

A3 Snap Ring (HW-ESR) (1)

SP-AS SPINDLE ASSEMBLY

LS-AS (1)

B1 Main Shaft (US103-146) (1)

B2 Spindle Housing (US101-146) (1)

B3 Bearings (HW-BRG) (2)

B4 Spindle Pulley (US106-146) (1)

B5 Upper Shaft Bearing Spacer (US105-146-7) (1)

BT-AS BELT TENSION ASSEMBLY

C1 Bearing (HW-BRG) (2)

C3 Belt Tension Sub (US-148) (1)

C4 HW-HCS5/8 (1)

C5 HW-HN11 (1)

HA-AS HANDLE ASSEMBLY

D1 Handle Unit Sub (HAAS1)

D2 Switch (US119-146-7SWITCH) (1) AND

Cover (US119-146-7COVER) (1)

D3 Switch Box (US120-146) (1)

D4 43” Yellow Cord (PC-146B)-not shown

D5 17” Yellow Cord (PC-146-MLP) (1)-not shown

D6 Rubber Grips (US114-146) (2)

D7 Knob for handle pivot (US142-146) (1)

D8 Cord Restraint (US134-146) (2)-not shown

D9 1” spring (HW-SP1) (1)

D10 Motor Clamp (HW-1/2 RL Clamp) (4)

D11 Cap Screws (HW-HWSL) (6)

D12 Wire Nuts (HW-WN) (1)

D13 Spade for Elec Box (HW-SPADE) (1)

D14 25’ Yellow Cord (PC-146-FLP) (1)-not shown

BB PC-L515R Female end 110V

CC PC-L515P Male end 110V

US-VBAS14 FL VACUUM BAG ASSEMBLY

E1 FL Vacuum Bag (US-BAG14) (1)

E2 Vacuum hose/clamp set (US-H/CL14) (1)

MT-AS MOTOR ASSEMBLY

F1 1.5 HP Motor (Motor 1.5HP) (1)

F2 Fan Housing (US103-146) (1)

F3 Impeller/Hub (MT-AS1) (1)

F4 Motor Pulley (US116-146) (1)

F5 Gasket (US-152) (1)

F6 Belt (PCB-146) (1)

F7 Cap Screw-Blower/Motor (HW-CS3/8) (4)

F8 Cap Screw-Impeller (HW-CS5/16) (1)

F9 Pulley Set Screw (HW-SS) (1)

F10 Spring Bolt-Blower (HW-3/8 Spring Bolt) (1)

F11 Wire Nuts (HW-WN) (5)

WH-ASP WHEEL ASSEMBLY

G1 3.5” Wheels (WH-146P) (2)

G2 Wheel Bracket/Axle (Wh-AS1) (1)

G3 Wave Spring (HW-WS) (2)

G4 External Snap Ring (HW-ESR) (2)

G5 Flat Washer (HW-W1) (4)

DP-AS DECK PLATE

H1 Base Plate (CH101-146) (1)

H2 Counter Weight (US132-146) (1)

H3 Belt Tension Bolt (US-150) (1)

H4 Hex Cap Screw (HW-HCS) (2)

H5 Dust Skirt Attached (US115-146B) (1)

H6 Lock Washer (HW-LW) (2)

H7 Spindle Housing Nut (US102-146) (4)

US-146 SANDER

I1 Nuisance Tag (US-143) (1)

I2 UL Listed Tag (US-145) (1)

I3 American Flag (LABL-FLAG) (1)

I4 Rivets (HW-RVT) (10)

I5 Orange Bag Safety (US148) (1)

I6 Belt Cover (CH02-146) (1 set 2 pc)

I7 Motor Clamps Cap Screws (HW-CS1/4) (6)

I8 Flat Washer (HW-FW/16) (6)

I9 Lock Nut-Motor (HW-CLN) (1)

I10 Cord Restraint (US134-146) (1)

I11 Flat Washer (HW-FW3/8) (4)

I12 spring (HW-SP3/4) (2)

ACCESSORY ITEMS US-146

J13 Dust Skirt (US115-146) (1)

J14 Backer Pads (BP6) (4)

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