CPS g-290 User manual

G-290 Grinder
OPERATOR’S MANUAL
Concrete Polishing Solutions
PO Box 520 * Norris, TN 37828
Phone: [phone] * Fax: [phone]
Toll Free: [phone] * www.go2cps.com

Dear Customer:
Thank you for choosing Concrete Polishing Solutions for
your equipment needs. The experience of Polished Concrete is
an incredible opportunity. We are excited about you joining the
growing future of Polished Concrete.
Our representatives will be happy to inform you of any
products or help assist you with your Polished Concrete needs.
We want you, as our customer to understand that while
we do consider our company to be the leader in research and
development in this industry, we are not above learning from
you as you experience new and challenging obstacles on each
oor surface that you deal with. If you have any questions or
suggestions for us, please contact us and you will nd that we
are willing to continue our education with you as well as we all
grow and learn in this industry.
We truly look forward to each and every partnership that
we have the privilege to form with our customers. Thank you
again for purchasing a CPS G-290 Planetary Grinder.
Best Regards,
David Padgett
President and CEO
Concrete Polishing Solutions
24/7 Technical Support- Toll Free 1-877-472-8200
Concrete Polishing Solutions- G-290 Operator’s Manual
SPECIAL THANKS

Table Of Contents
Special Thanks .................................................................................2
Warranty/ Liability Policies ..........................................................4-5
Forward/ Special Symbols ...........................................................6
Delivery/ Specications ................................................................7
Safety Messages ..............................................................................8-9
All About Your G-290/290PRO ....................................................10
Understanding Your Controls .....................................................10
Preparing The Machine .................................................................12
How To Operate The Machine ....................................................13
Best Practices ....................................................................................14
Maintenance & Rebuilding ...........................................................15
Replacing Spring Sets ....................................................................16
Troubleshooting ..............................................................................17-18
Transporting & Storage .................................................................19
Accessories & Related Products .................................................20
Regreasing the Ring Gear ............................................................21
Flex Head Assembly Instructions ..............................................23-28
Motor Manual ..................................................................................29-35
Slip Clutch w/o Pinion- Two Flange ..........................................36
Slip Clutch w/Pinion- One Flange .............................................38
GENERAL INFORMATION
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Concrete Polishing Solutions- G-290 Operator’s Manual
Do You Need IPCI Certification:
Call Today To Schedule Your
IPCI Class.
1-866-421-9550

Warranty
Concrete Polishing Solutions warrants to the purchaser that under normal
use and service, the G-290 purchased hereunder shall be free from defects in material
and workmanship for a period of 1 year or 300 hours. Expendable or consumable
items or parts are not covered under this warranty. This warranty does not cover
equipment or parts which have been misused, altered, neglected, handled carelessly,
or used for any purposes other than those for which they have been manufactured.
This warranty also does not cover loss, damages resulting from accident, or damages
resulting from an unauthorized service.
*Tampering- If the Tachometer has been tampered with in any way, your
warranty will be voided.
*Service- If the machine has not been serviced within the manufacturers
recommendations, your warranty will be voided.
*Disassembled- If the machine has been disassembled, your warranty will
be voided.
*Consumer will be responsible for shipping to and from the service center
for warrany repairs.
Our Return Policy
Please open and inspect your order upon receipt. If you have an issue, please
contact a member of our sales sta rst so that we can resolve that issue in as short
a time as possible.
Any returns must be made within 30 days of delivery and must be
accompanied with a return authorization number and a copy of the original invoice.
We will then review the complaint and inspect the merchandise before a credit
can be processed. Any items that are returned because of obvious misuse will be
shipped back to the sender at their expense and no credit shall be issued.
No authorization number is necessary if you are returning an item for repair
that will be returned back to you. Before returning, please rst call a member of our
sales and technical sta and you will need to enclose your company name, address,
telephone number, and a statement explaining the problem.
If an item was delivered to you in error, please let us know and we will pick
up the item at our expense. If your order contains a shortage, report the shortage no
later than 24 hours after receiving your shipment. Shortage claims will be honored
only when reported promptly.
We cannot accept any products that have been either modied to a
customer’s specications or is a non-stocking special order item. Any products, such
as machines or other equipment, that sustain aftermarket alterations that have not
been pre-approved by CPS are not returnable.
GENERAL INFORMATION
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Concrete Polishing Solutions- G-290 Operator’s Manual

Damaged Shipments
CPS carefully inspects all orders before shipment and then packs shipments
as carefully as possible. We advise that you thoroughly check all cartons before you
sign for the order. Any claims for merchandise damaged in transit must be led with
the delivering carrier, not CPS.
Liability
Important notice: The following is made in lieu of all warranties, expressed
or implied: CPS and/or manufacturer’s only obligation shall be to replace such
quantity of the product proved to be defective provided that such guarantees or
replacement are a stated policy of the manufacturer. CPS and/or manufacturers
shall not be liable for any injury, loss of damage, direct, incidental, or consequential,
arising out of the negligence or misuse of the product. Before using, user shall
determine the suitability of the product for its intended use and the user assumes
all risk and liability whatsoever in connection therewith. The foregoing may not be
altered except by an agreement signed by at least two of the ocers of Concrete
Polishing Technologies, Inc. CPS will not be liable for delays in shipping due to
circumstances beyond the control of CPS. Warranties will not apply if after market
alterations, changes, or modications have been made to the equipment.
Customer Service
Concrete Polishing Solutions has a well trained service department and
our sales and technical sta have extensive knowledge on how to service our
equipment. Being the manufacturer, we best understand our equipment and
already have parts in stock. We can also send you the parts and help you to service
your own equipment over the phone. In some locations, we can also provide you
with information regarding an outside service person in your area that can assist
you with parts and service.
If you need to contact the Service Department at Concrete Polishing
Solutions, you will need to provide the product model and identication numbers.
24/7 Tech Support
We provide twenty-four hours a day, seven days per week technical service
for our customers. Our trained representatives will be happy to help you with any
questions you may have. Please feel free to contact us at any time, day or night by
phone at 877-472-8200 or via e-mail at [e-mail].
GENERAL INFORMATION
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Concrete Polishing Solutions- G-290 Operator’s Manual

NOTE: Please read all instructions carefully before you begin
using your machine.
NOTE: Keep your manual with the machine at all times.
Special Symbols
Throughout your manual you will see several symbols that will enable
you to recognize important information at a quick glance.
WARNING! Avoid Death!
This symbol and text highlight denite hazards or death to
the operator or bystanders that will occur if the hazards or
procedures are ignored.
CAUTION! Avoid Injury!
This symbol and text highlight potential hazards or death to
the operator or bystanders that will occur if the hazards or
procedures are ignored.
IMPORTANT! Avoid Damage!
This text is used to tell the operator of actions or conditions that
might result in damage to the machine.
This operator’s manual provides instructions for safe, ecient,
and trouble-free operation of your machine. You, and anyone else
who will be using or maintaining the machine are required to read
and understand the information contained in this manual.
Sections in your operator’s manual are placed in a specic
order to help you understand all the safety messages and learn the
controls so you can operate this machine safely. You can also use
this manual to answer any specic operating or servicing questions.
A convenient index located at the end of this book will help you to
nd needed information quickly.
Owners and operators must keep the owner’s manual available
for frequent reference. Contact Concrete Polishing Solutions if you
need any assistance, information, or additional copies.
*
*
FORWARD
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NOTE!
General information is given throughout this manual that may
help the operator in the operation or service of the machine.
Concrete Polishing Solutions- G-290 Operator’s Manual

Your G-290 was carefully inspected and protectively packaged to
prevent damage in shipment. We suggest that upon removing the unit from
its carton, you carefully inspect it for any possible damage in transit. If damage
is discovered, immediately notify the transportation company who delivered
your machine.
The following items should be included with the delivery of your
G-290; please contact Customer Service if anything is missing:
a. Grinder
b. Dust Skirt
c. 1.5” Y-Pipe
d. Power Cord
e. Operator’s Manual
Serial Number
Sales Person
Cell Number
NOTES
Specications
DELIVERY & SPECIFICATIONS
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Concrete Polishing Solutions- G-290 Operator’s Manual
Grinder Weight Motor Grinding
Pressure
Grinding
Width
RPM Power
Requirements
G-290 650lbs 10 HP 440 lbs. 29” 0-1480 Three-Phase/230v/30 amp
Three-Phase/480v/15 amp

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Concrete Polishing Solutions- G-290 Operator’s Manual
The G-290 machines are designed to be used by a professional. The user is
expected to have a good knowledge and understanding of the user and
safety instructions before operating, inspecting, or adjusting the machine.
Following the safety instructions prevents damage to the operator and the
machine.
SAFETY MESSAGES
*This machine should only be used or repaired by those who have received
proper training and have read the user manual
*Secure the area around the worksite. Make sure any debris has been cleared.
Debris could be flung out by the machine and cause personal injury.
*Always use protective equipment such as safety shoes, goggles, gloves,
breathing masking and ear protection, as required by OSHA.
*The machine should be started with the grinding head down. All tools should
be touching the floor evenly.
*During grinding, tools may become hot. Tilt the machine back and allow for
cooling before removing tools, using protective gloves.
*Machine should only be used and moved on level surfaces. There is possible
risk of injury if the machine starts to roll.
*Do not clean the machine using a high-pressure washer. Moisture could
penetrate and damage the machine’s drive system.
*This machine is not suitable for picking up hazardous dust.
*Never operate while under the influence of drugs, alcohol, or any substance
that could impair judgement.
*Do not operate if machine is damaged
*Do not use machine in areas where there is risk of fire or explosion. Put out
any smoking materials and other open flames before use.
*Do not attempt to perform any maintenance or repairs while machine is
running.
*
Make sure to use 3-wire electrical system connected to electrical groud and
disconnect electrical supply before changing out or removing any tools. For
maximum protection against electrical shock, use a circuit that is proctected by
a gorund fault circuit interrupter.
*If you must start machine while head assembly is in upright position, be certain
there are no plates mounted to the head.
*Acceleration and vibration transmitted through the handlebars pending testing.
*Sound level of this unit is pending testing.
*Temperature of fixed wiring pending testing.

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Concrete Polishing Solutions- G-290 Operator’s Manual
ATTENTION: This book has been prepared to provide information and suggestions
for Operators in their operation of the G-290 grinder and polisher.
It is not intended that the suggestions in this booklet take precedence
over existing job-site safety rules and regulations, or OSHA regulations. However, a
thoroughstudyof thefollowinginformationshouldprovideabetterunderstanding
of safe operation and aord a greater margin of safety for people and machinery
on the job-site.
It must be recognized that this is a booklet of suggestions for the Operator’s
use. It is the responsibility of the owner to make personnel aware of all federal, state
and local rules and codes and to make certain operators are properly trained.
SAFETY MESSAGES
*
Always wear personal protective gear when operating the machine
without a vacuum system. Wear a properly fitting particle mask,
appropriate for this application, as specified by OSHA regulations.
*Obey all safety signs and instructions when operating or maintaining
equipment.
*Keep children and pets away from your grinder and polisher at all
times.
*Always make sure to use the appropriate dust interceptor when
performing dry grinding operations.
*
When filling the tank with water, use only water in the water tank. Any
chemicals added may cause material breakdown, which may lead to
leakage. Leaks can get into electrical components, creating hazards
and causing potential injury.
*The machine should only be used to grind and polish natural stone,
terrazzo, concrete or other CPS approved materials.
*If the machine has been in a cold location, it should be placed in a
warm location for approximately 2 hours before use.
*Keep the electrical parts of the machine dry. For best results, keep the
machine in a dry, warm, enclosed building.

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Concrete Polishing Solutions- G-290 Operator’s Manual
ALL ABOUT YOUR G-290
(metal bonds, resin bonds, etc.) depending on the
surface to be worked.
The gear drive system has been designed with a heavy duty belt that reduces
slipping and extends the life of the machine. We have paid special attentions to the
designing of upper and lower external seals for the head, which prevents dust from
getting to the internal seal and locking up bearings. Both the grinding plates and
gear drive assembly are enclosed in a safety shroud (A:2) which has two dust exhaust
ports (A:3) to be used when dry grinding.
The chassis (B) comprises a water tank (B:1) and an inverter box (B:2) with fan on
one side and an exhaust lter on the other. The water tank is large enough to hold
approximately 8 gallons of water. The water is gravity fed and released by using the
water valve (B:3) located at the bottom of the frame.
The G-290 is unique in that the weights © are attached to the frame, which prevents
loss while maintaining an orderly job site. They provide 72lbs of additional weight
and are located on both sides of the machine. They can be lowered independently
on either side to help cut and edge more eciently.
The frame of the machine extends above the chassis and holds the self-adjusting
handlebars (D) and the control panel. The control panel (E) includes the speed setting
which has a wide range of speed control, allowing you more room to dial each tool to
its optimum cutting speed.
The G-290 has been designed by the
engineers at Concrete Polishing Solutions
to be the most innovative in grinding
and polishing technology. We have used
our experience in the industry to create
a grinder and polisher that combines
practicality and durability.
The grinding head assembly (A), contains
the motor (A:1), the grinding plates are part
of the revolutionary three-head grinding
system designed by CPS. This new system
contours to the oor’s surface, reducing
rigidity, allowing your tooling to better
follow the oor’s surface, and lowering initial
diamond costs. These driving plates can be
tted with a number of attachment plates

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Concrete Polishing Solutions- G-290 Operator’s Manual
UNDERSTANDING YOUR CONTROLS
The control box is mounted on top of the G-290 on top of the control plate.
Please note that some of the controls are strictly for programming the machine
and are not part of the every-day function of the machine. Please contact the
CPS Customer Service Department if you have any questions regarding the
programming of your grinder/polisher.
1. RUN - Use this button to turn the main electric
motor on to begin function.
2. STOP/RESET - Use the top part of this button, labeled “STOP”
to initiate the shut-down sequence, bringing the head
assembly to a gradual stop and shutting o all power
to the G-290 . The bottom part of the button labeled
“RESET” may be used to reactivate the initial start-up sequence. This button is
primarily used after the Emergency Stop button has been pressed.
3. FORWARD/REVERSE - Pressing this button determines
the direction of the head and controls direction of the machine.
Pressing”FWD” rotates the head in a clockwise direction and
moves the G-290 in a forward directions, while “REV” rotates
counter-clockwise, moving the G-290 in th reverse direction.
4. Display Screen - This sc reen is used to display system status and
error codes.
IMPORTANT! This button is only to be used in the event of emergency
and should not be used routinely to top the machine.
5. Emergency Stop- In the event of an emergency, this
button will immediately shut down the machine, skipping
the gradual slowing process and cutting all power to
the motor and plates at once.
6. Speed Potentiometer - This is a variable speed, rotating selection with
parameters from 1-10, depending on how slow or fast you want the
machine to operate.
The following controls are used to operate the machine on the job site:
IMPORTANT! Do not leave the G-290/290PRO standing in on during shut-
down phase. Always keep machine in mtion until the head has comes to a full

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Concrete Polishing Solutions- G-290 Operator’s Manual
PREPARING THE MACHINE
Perform the steps listed below to prepare your machine for operation.
CAUTION! Always place hands in center of handlebars (see pictures in
Transporting the Machine) when lowering and raising machine. This method
increases stability and reduces the risk of machine tilting as it is repositioned.
a. Make sure handle is in an upright “locked” position.
1. Attach appropriate grinding tools to G-290
c. Kneeling in front of upended machine, put metal bond plate or
resin plates on the cross-complete. Turn the cross-complete lock in
either place.
*NOTE: To remove plate:
lay the machine on its back
again and disengage cross-
complete from driving plate
by turning cross-complete
and lining up notches until
plate slips free.
d. Return the machine to upright
position and adjust handle to
operating position. Lock the
handle pin into position.
2. Check that the safety guard is properly attached and secured.
3. If dry grinding, you will need to locate vacuum and dust interceptor to location
of grind. Then hook hose up to join vacuum and dust interceptor. Run the machine
hose to dust interceptor.
4. The power cord should be included with delivery of your G-290. Locate power
cord and plug into receptacle located next to the handle pin on top of the inverter
box. Plug into an appropriate power source.
Always use a three-wire electrical system
connected to the electrical ground. For
maximum protection against electric
shock, use a circuit that is protected by a
ground fault circuit interrupter.
b. Lay the machine on its back with the handle laying on the oor.
This exposes the driving plate on the underside of the machine.
5. Before beginning your job, walk the area and clear all debris. Injuries may occur
from debris projected into the air by impact. Projected debris can cause injuries to
operators, co-workers, and property.

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Concrete Polishing Solutions- G-290 Operator’s Manual
HOW TO OPERATE THE MACHINE
The G-290 is intended for use by a professional. As such, this section is intended
to guide the operator through the operation of the G-290. It is not intended as
instruction on grinding or polishing of oors. The term “plates”is used to mean any
of the attachments (metal bond plates, resin plates, etc.) applicable to the process.
1. Adjust the handlebars to desired height and grasp rmly.
2. Stand behind G-290 with feet planted rmly and evenly on
ground
3. Press the “RUN” button to engage power supply.
The following steps should be done after completeing the instructions in “Preparing
the Machine:”
IMPORTANT! Never hold the machine in one place while it is
still on. The G-290 must remain in constant motion. Holding the
machine still may cause “swirling”and damage to oor.

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Concrete Polishing Solutions- G-290 Operator’s Manual
BEST PRACTICES
12. Unplug electrical cord from outlet rst, then unplug from G-290 and
store as appropriate.
When grinding with the G-290, one should do a forward pass followed by
a back pass. No weights are to be used in the following steps:
1. Using 40 grit metal bond diamonds:
Run G-290 between a 6 and 7 speed setting
Foot Speed - Slow and easy, natural walking pace
2. Using 150 grit metal bond diamonds:
Run G-290 between a 6 and 7 speed setting
Foot Speed - Slow and easy, natural walking pace
3. Using 100 grit resin bond diamonds:
Run G-290 between a 4.5 and 6 speed setting
Foot Speed - Slow and easy, natural walking pace
Each oor is dierent and requires the operator to have a certain amount
of expertise in determining which tools are most appropriate for each
job. CPS is happy to discuss any questions regarding the G-290 and the
grinding polishing process. Please feel free to contact our Customer
Service Department.

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Concrete Polishing Solutions- G-290 Operator’s Manual
MAINTENANCE & REBUILDING
The G-290 has been designed to be low maintenance for the operator. As such,
there are only a few things you need to do to ensure optimum function.
Maintenance
•By following the schedule above, you can expect the G-290 to operate as designed
and perform consistently in the eld.
Please follow the instructions below for rebuilding your G-290:
1. Replace lower belt on G-290:
Rebuilding
Please call our Service Department for any questions on
replacing the ring gear for your G-290

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Concrete Polishing Solutions- G-290 Operator’s Manual
REPLACING SPRING SETS
The inverter will tell you your faults and what is occurring with your G-290.
Remote keypad reading“LCR” (amps) is important.

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Concrete Polishing Solutions- G-290 Operator’s Manual
TROUBLESHOOTING
The G-290 is designed for long, trouble-free performance and should not require
extensive troubleshooting in the eld. If diculty is encountered, check the following:

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Concrete Polishing Solutions- G-290 Operator’s Manual
TROUBLESHOOTING CON’T
If you still have questions after checking these items, please feel free
to contact the CPS Customer Service Department and ask for Technical
Support 24 hours a day at 1-877-472-8200. We are more than happy to
help you with any questions or concerns you may have.

Transporting the Machine
Place the handle in the upright position.
Lock the handle pin.
Tip the machine back and transport on the
wheels.
Storage
Store inside in dry conditions to prevent
damage to your G-290.
TRANSPORTING & STORAGE
Concrete Polishing Solutions- G-290 Operator’s Manual
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19
*
CAUTION! Always place hands
in center of handlebars (see
picture) when lowering and
raising machine! This method
increases stability and reduces
the risk of machine tilting as its
re-positioned.
Take the CHALLENGE
Head-2-Head
We will bring
equipment, tooling,
chemicals, and
technical expertise
on-site for you to
compare with your
current system.
CALL TODAY
1-877-472-8200
email us: [email protected]
www.go2cps.com
Take the CHALLENGE
Head-2-Head
We will bring
equipment, tooling,
chemicals, and
technical expertise
on-site for you to
compare with your
current system.
CALL TODAY
1-877-472-8200
email us: [email protected]
www.go2cps.com
Take the CHALLENGE
Head-2-Head
We will bring
equipment, tooling,
chemicals, and
technical expertise
on-site for you to
compare with your
current system.
CALL TODAY
1-877-472-8200
email us: [email protected]
www.go2cps.com

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Concrete Polishing Solutions- G-290 Operator’s Manual
ACCESSORIES & RELATED PRODUCTS
Item # Description
GPPT0279 230 v PNS Machine Cord, 50 feet
GPPT0138 480 v PNS Machine Cord, 100 feet
GPPT0285 G-250 Dust Skirt
GPPT0601 G-320/290 Series Magnetic Plate
GPPT0278K G-250/250XT Series Resin Bond Plate
GPPT0281 230 v Single-Phase Distribution Box
GPMC0034K CAT-4 Dust Extractor
APMF1417 G-320/290 Series Metal Bond Plate
ACCESSORIES & RELATED PRODUCTS