Newgrind Rhino RX7 User manual

RX7 Users Manual

Equipment Uses

 Concrete leveling, grinding and polishing

 Terrazzo grinding and polishing

 Stone grinding and polishing

 Hardwood grinding, sanding and polishing

 Glue, Thinset and mastic removal

Address:

103B-81 Golden Drive

Coquitlam, BC

Canada V

3K 6R2

Contact:

1-888-467-0242

sales@newgrind.com

Assembled in Canada using only the highest-quality USA components

RHINO RX7

USER MANUAL

RX7 Users Manual

Table of Contents

Equipment Uses................................................................................................................................................ 1

RX7 Diagram ........................................................................................................................................................ 3

Machine Specifications ....................................................................................................................................... 3

Tooling .......................................................................................................................................................... 4

Safety Instructions ............................................................................................................................................ 4

Work Area Safety .......................................................................................................................................... 4

Electrical Safety ............................................................................................................................................. 4

Personal Safety ............................................................................................................................................. 5

Equipment Safety and Care .......................................................................................................................... 6

Service Safety ................................................................................................................................................ 7

Kickback and Related Warnings ........................................................................................................................... 7

Mounting the variable speed hand grinder to the RX7 .......................................................................................... 8

Operating the Grinder ........................................................................................................................................ 9

Prior to using the grinder .............................................................................................................................. 9

Starting the grinder ....................................................................................................................................... 9

Adjusting the speed .................................................................................................................................... 10

Stopping the equipment ............................................................................................................................. 10

Changing tools and accessories .................................................................................................................. 10

Parts and accessories .................................................................................................................................. 11

Grinder Maintenance ........................................................................................................................................ 11

General Maintenance ................................................................................................................................. 11

Daily Maintenance ...................................................................................................................................... 11

Weekly ........................................................................................................................................................ 12

LIMITED EQUIPMENT WARRANTY OF SALE ................................................................................................................. 12

FORCE MAJEURE .................................................................................................................................................. 12

LIABILITY LIMITATIONS ......................................................................................................................................... 13

TERMS & CONDITIONS ........................................................................................................................................... 13

AGREEMENTS ...................................................................................................................................................... 15

RX7 Users Manual

RX7 Diagram

NOTE: The RX7 is pictured here attached to a Milwaukee variable speed polisher. If you are using a different

polisher/sander the features may be slightly different.

Machine Specifications The RX7 is a 3-headed grinder attachment tool.

We recommend using the RX7 with either the Makita 9237C 7-Inch Polisher/Sander or the

Milwaukee 5460-6, although it can be used with any variable speed 7” polisher.

Power

15 AMP/110V

Machine weight

7 lbs

Disc speed

200-1200 rpm

Variable speed control

YES

Number of grinding heads

Counter-rotating heads

Disk size

4 inches

Grinding footprint

8 ¾ inches

Handle

Speed control dial

Velcro strap

Tool rest

Side Handle

Spindle lock button

UHMW dust skirt

Vacuum port

Trigger

10.

Support post

11.

Tool plates/tools

12.

Tensioner pulley bolt

RX7 Users Manual

Quick change tooling

YES

Quick belt changing system

YES

Wet or dry grinding

YES

UHMW floating dust skirt

YES

Runs forward or reverse

Can be used as an edger

YES – grinds to within 1/8 of the edge

Single vacuum attachment

YES

Tooling

Rhino Style tooling

YES

Standard trapezoid

Safety Instructions WARNING! Read and understand all instructions.

Failure to follow all instructions listed below, may result in electric shock, fire and/or

serious personal injury. SAVE THESE INSTRUCTIONS.

Work Area Safety

1. Keep your work area clean and well lit. Cluttered floors and dark areas invite accidents.

2. Do not operate equipment in explosive environments, such as in the presence of -

flammable liquids, gases or dust. Grinding can create sparks which may ignite the dust or

fumes.

3. Keep bystanders, children, and visitors away while operating equipment. Distractions can

cause you to lose control.

Electrical Safety

1. Power tool plugs must match the outlet. Never modify the plug in any way. Do not use

any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching

outlets will reduce risk of electric shock.

2. Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges

and refrigerators. There is an increased risk of electric shock if your body is earthed or

grounded.

3. Do not expose power tools to rain or wet conditions. Water entering a power tool will

increase the risk of electric shock.

RX7 Users Manual

4. Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power

tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled

cords increase the risk of electric shock.

5. When operating a power tool outdoors, use an extension cord suitable for outdoor use.

Use of a cord suitable for outdoor use reduces the risk of electric shock.

6. If operating a power tool in a damp location is unavoidable, use a ground fault circuit

interrupter (GFCI) protected supply. Use of an GFCI reduces the risk of electric shock.

Personal Safety

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other

construction activities contain chemicals known to cause cancer, birth defects or other

reproductive harm.

Some examples of these chemicals are:

 lead from lead-based paint

 crystalline silica from bricks and cement and other masonry products, and

 arsenic and chromium from chemically treated lumber

1. DO NOT let comfort or familiarity with product (gained from repeated use) replace strict

adherence to equipment safety rules. If you use this equipment unsafely or incorrectly,

you can suffer serious personal injury.

2. Stay alert, watch what you are doing and use common sense when operating equipment.

Do not use equipment while tired or under the influence of drugs, alcohol, or

medication. A moment of inattention while operating equipment may result in serious

personal injury.

3. Adequate ventilation of your work area is very important when using equipment. Use a

dust mask or appropriate respirator. Due to the dusty nature during use of

4. Do not overreach. Always keep proper footing and balance. Proper footing and balance

will enable better control of the equipment in unexpected situations.

5. Use safety equipment. Always wear eye protection, dust mask, non-skid safety shoes,

hard hat and hearing protection.

Ordinary eye or sunglasses are NOT eye protection.

6. DO NOT Turn on equipment while the machine is facing up. Any tooling fastened to the

machine can eject and become a lethal projectile.

RX7 Users Manual

7. Prevent unintentional starting. Ensure the switch is in the off position before connecting

to power source and, picking up or carrying the tool. Carrying power tools with your

finger on the switch or energizing power tools that have the switch on invites accidents.

8. Hold the power tool by insulated gripping surfaces only, when performing an operation

where the cutting tool may contact hidden wiring or its own cord. Contact with a "live" wire

may also make exposed metal parts of the power tool "live" and could give the operator an

electric shock.

9. Position the cord clear of the spinning accessory. If you lose control, the cord may be cut or

snagged, and your hand or arm may be pulled into the spinning accessory.

10. Never lay the power tool down until the accessory has come to a complete stop. The

spinning accessory may grab the surface and pull the power tool out of your control.

11. Do not run the power tool while carrying it at your side. Accidental contact with the spinning

accessory could snag your clothing, pulling the accessory into your body.

Equipment Safety and Care

1. Do not force the power tool. Use the correct power tool for your application. The correct

power tool will do the job better and safer at the rate for which it was designed.

2. Do not use the power tool if the switch does not turn it on and off. Any power tool that

cannot be controlled with the switch is dangerous and must be repaired.

3. Disconnect the plug from the power source before making any adjustments, changing

accessories, or storing power tools. Such preventive safety measures reduce the risk of

starting the power tool accidentally.

4. Store idle power tools out of the reach of children and do not allow persons unfamiliar with

the power tool or these instructions to operate the power tool. Power tools are dangerous in

the hands of untrained users.

5. Maintain power tools and accessories. Check for misalignment or binding of moving parts,

break- age of parts and any other condition that may affect the power tool’s operation. If

damaged, have the power tool repaired before use. Many accidents are caused by poorly

maintained power tools.

6. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting

edges are less likely to bind and are easier to control.

7. Use the power tool, accessories and tool bits etc. in accordance with these instructions,

taking into account the working conditions and the work to be performed. Use of the power

tool for operations different from those intended could result in a hazardous situation.

8. Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles

and grasping surfaces do not allow for safe handling and control of the tool in unexpected

situations.

RX7 Users Manual

9. Tools and accessories must be rated for at least the speed stated on the equipment serial

plate. Tools and other accessories running faster than rated speed can fly apart and

cause injury.

10. Due to the dusty nature during use of this equipment, be sure to clean equipment often

to remove dust accumulations.

11. Always install the dust skirt before operation.

12. Check the tools and accessories carefully for cracks or damage before operation. Replace

cracked or damaged tools or and accessories immediately.

13. Hold the equipment firmly with both hands during operation.

14. Do not leave the equipment running unattended.

15. Do not touch the tools immediately after operation; they may be extremely hot and

could burn your skin.

16. Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the

housing and excessive accumulation of powdered metal may cause electrical hazards.

Service Safety

1. DO NOT modify the machine. Modifications will void warranty and could result in unsafe

operation of equipment.

2. Equipment service should be performed only by qualified repair personnel. Service or

maintenance performed by unqualified personnel could result in a risk of injury.

3. When servicing equipment, use only identical replacement parts. Use of unauthorized

parts may create a risk of electric shock or injury.

WARNING: Misuse or failure to follow the safety rules stated in this instruction

manual may cause serious personal injury. SAVE THESE INSTRUCTIONS.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or

any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which

in turn causes the uncontrolled power tool to be forced in the direction opposite of the

accessory’s rotation at the point of the binding.

For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel

that is entering into the pinch point can dig into the surface of the material causing the wheel to

climb out or kick out. The wheel may either jump toward or away from the operator, depending

RX7 Users Manual

on direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break

under these conditions.

Kickback is the result of power tool misuse and/or in- correct operating procedures or

conditions and can be avoided by taking proper precautions as given below.

1. Maintain a firm grip on the power tool and position your body and arm to allow you to

resist kickback forces. Always use auxiliary handle, if provided, for maximum control over

kickback or torque reaction during start-up. The operator can control torque reactions or

kickback forces, if proper precautions are taken.

2. Never place your hand near the rotating accessory. Accessory may kickback over your

hand.

3. Do not position your body in the area where power tool will move if kickback occurs.

Kickback will propel the tool in direction opposite to the wheel’s movement at the point

of snagging.

4. Use special care when working corners, sharp edges etc. Avoid bouncing and snagging

the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating

accessory and cause loss of control or kickback.

Mounting the variable speed hand grinder to the RX7

Note: Grinder arbor must match the RX7 whether 5/8” or 14mm thread

1. Remove the red rubber band and dust skirt.

2. Place RX7 on a workbench, table or floor. With the tool plate drivers facing down.

WARNING: if any diamond tools, or abrasive pads/discs are mounted to the RX7

damage can occur to the surface of the bench, table or floor due to scratching from

tools. If needed remove tool plates and place with grommets facing down.

3. The tool plates can be removed by hand. Simply grasp with one hand and pull the plate

straight out. This will disengage the 3 coupling nut drive pins from the rubber grommets.

Do this for all 3 heads.

4. Loosen grinder support post using a ½” wrench for the top nut facing the top surface of

the RX7

5. Take a ½” deep socket and loosen the bottom nut of the support post on the underside

of the RX7 by the vacuum port.

6. Turn Velcro strap with screw down into the base to allow enough room to insert hand

grinder into the drive shaft, without the support post interfering

RX7 Users Manual

7. Plug in hand grinder and place the arbor squarely over the drive shaft and bump trigger

by depressing and quickly releasing. To thread the grinder into the RX7 until it is fully

seated.

8. Centre the hand grinder over the support post and turn top plate nut until the support

post touches the bottom of the grinder snugly.

WARNING: DO NOT OVER TIGHTEN AS THIS WILL APPLY EXCESSIVE STRESS

TO DRIVE SHAFT.

9. Remove section of hook sticky back Velcro and attach to the grinder, centered over the

strap

10. Hold grinder firmly in position and take each side of the strap and pull tightly around

grinder

11. Using ½” deep socket firmly tighten bottom nut of the support post with split washer

12. Replace tool plates, position dust skirt and secure using the red rubber band

Operating the Grinder

Prior to using the grinder

1. Inspect the grinder to make sure all bolts are tight, and that tools are properly mounted

2. Check that the plug is properly connected to the extension cord and inspect the cord for

wear and tear.

3. Make sure that speed dial is turned to its lowest setting

WARNING: This will prevent unexpected high speed start up which could cause

some tools to eject or cause undesirable marks to the surface being finished.

4. Plug the machine in.

Starting the grinder

DO NOT HOLD THE GRINDER FAR FROM THE SURFACE WHILE STARTING!

Doing so can cause the tools to release from the equipment and cause damage to

the surface being finished and harm to the user!

1. Check that speed dial is set to desired top speed.

2. Plug the power cable in, making sure that extension cord is not tangled or wrapped

around any obstacles.

3. Holt the grinder firmly in both hands

RX7 Users Manual

4. Squeeze the trigger to start grinding

Adjusting the speed

The grinder

feature

a dial speed control,

which controls the polisher's maximum

rotations per

minute. The speed will remain variable to the chosen

dial setting by use of

the trigger switch.

2. Dial settings

range from 1 through 5. Lower numbers correspond

to lower speeds and

higher numbers correspond to

higher speeds. Generally, lower speeds are recommended

for tight work areas and higher speeds are

ideal for large surface areas. Use the setting

that

best suits your job.

3. To control the speed, set the dial to the desired

number. Then pull the trigger. Increase

or decrease

pressure on the trigger to vary the speed.

Stopping the equipment

1. To stop the grinder, release the trigger

Changing tools and accessories

WARNING: Always turn grinder off and disconnect power from the machine when

performing any operations to the bottom of the machine!

When removing and inserting tool plates or adapter plates, be sure to inspect rubber grommets

for signs for wear and replace any damaged grommets.

WARNING: Using grommets that are damaged or missing can cause unexpected

equipment operation and increase the chance of tool plate / adapter plate ejection or

violent vibration leading to loss of control of equipment!

To change the tools:

1. Turn grinder off, and unplug power

2. Lay the grinder on it’s back

WARNING: Do not attempt to replace tools that have recently been in use as they may be

hot and could cause injury

3. The tool plates can be removed by hand. Simply grasp with one hand and pull the plate

straight out. This will disengage the 3 coupling nut drive pins from the rubber grommets.

Do this for all 3 heads.

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