Legacy Industrial SD Grinder User manual

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Floor%Grinder%
Operating%Manual%
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Model:%Legacy%Industrial’s%SD%Grinder%
Manufacturer:%Legacy%Industrial%Corp.%
Please%read%these%instructions%carefully%before%using.%
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Page Number
Contents
2
Introduction and Description
3
Technical Data
4
Operation
5
Safety Precautions
6-7
Troubleshooting
7
Maintenance
7
Parts Diagram
8
Parts List
9-10
Customer’s!Responsibility!!!!!!!!!!!11!
Terms!and!Conditions!!!!!!!!!!!12-14!
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Introduction and Description
This manual is intended to provide operation and service information necessary
for the safe and efficient use of this Floor Grinder. Operating or servicing the
unit other than in accordance with the instructions given may subject the
machine to conditions beyond its capability. This may result in the machine
failure or personal injury.
IMPORTANT
Read the entire operating manual carefully before attempting to use the floor
grinder. Special attention should be given to the section entitled “Safety
Precautions”.
The floor grinder is a sturdy, reliable and easy to use machine.
The floor grinder is fitted with a 1.5 hp single phase motor. This motor offers a
direct drive to the grinding plate by way of a flexible coupling between the motor
and the plate.
The shroud system is unique in design by automatically adjusting to suit
segment height and floor angle. This shroud system when used in conjunction
with an appropriate industrial vacuum unit helps to eliminate dust during
grinding. The shroud has 2 removable sections to allow the operator to
maneuver the grinder close to the wall. Please note that dust will likely occur
when using the grinder with the either shroud section removed and represents
a safety-hazard if not being used against a wall.
The floor grinder comes complete with a water connection for wet grinding, if
required. The water connection incorporates a ball valve that allows the
operator to regulate the water supply to obtain the best grinding results. It is
important to use a GFCI protected circuit when operating wet.
The floor grinder has a foldable handle which enables it to be easily transported
in the trunk of most vehicles. The operator can raise or lower the height of the

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handle to maximize comfort.
The newly designed lifting handle system makes the machine easy to lift.
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Technical Data
Motor HP
1.5 hp
Motor KW Rating
1.1kw
Motor RPM
1730rpm
Unit Weight
132 lbs. /60kg
Plate Type
Plate Type Standard 10 inch grinding head
Plate Bolt Types
M12x25 countersunk socket head
Main Construction
Powder Coated Steel
Operation
The floor grinder is designed to be used either wet or dry. If the application
requires dry grinding, a suitable industrial vacuum is required. GFCI protected
circuit is recommended for wet use.
Consult Safety Data Sheets for the materials being ground. Concrete dust and
floor coatings contain materials that can be harmful. SEE SAFETY
PRECAUTIONS FOR Silica Dust Warning.
Recommended personal protective equipment PPE:
Hearing: Use hearing protection (ear plugs or covers designed for this use)
Eye: Use protective goggles or glasses
Respiratory: Use a NIOSH/MSHA device (mask or respirator) that protects your
lungs from the level of dust you are creating or working in
Hand Protection: Sturdy Gloves
Foot: Sturdy, Closed Toe Shoes

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Operating the Grinder
1.Make sure the diamond tooling is suitable for the material being ground
and that the tooling is correctly balanced. If wobbling or excessive vibration is
noticed, discontinue use, unplug the unit and inspect tooling and tooling plate.
2.Ensure that the grinding plates are in good condition and properly
mounted. Never use damaged tooling.
3.All countersunk bolts must be tightened to specifications and firmly in
place. Take periodic breaks to ensure that bolts are properly tightened, as
they can loosen during operation.
4.Check that the grinding plate is adjusted so that it sits level on the work
surface (use the bubble-level on the machine as a reference).
5.Check that all nuts and bolts on the folding handle latch are tight and secure.
6.Raise the grinding plates from the floor.
7.Start the motor by pressing the black switch on the starter box.
8.Lower the grinding plate and begin grinding. Keep the grinding head moving
side to side on the work surface to create an evenly ground surface until the
desired results are reached.
9.When grinding for removal of coatings/mastic/over-layments it is important to
grind slowly (small bites) so that the unit is not overheated.
10.Use of this machine and common sense. If you are not sure if the machine
can do what you need to be done and do it safely, consult your supervisor,
employer or Legacy Industrial for clarification.
Stopping the Grinder
Depress the red stop button on the start box.
Adjusting the machine for level
The position of the axle may be adjusted as needed for leveling.
1.Adjust the vertical grinding position by loosening the level adjustment
fastener counter clockwise.
2.Lifting the level adjustment handle raises the back end of the grinder.
3.Lowering the level adjustment handle lowers the back end of the grinder.
4.Use “bubble-level”, mounted on the machine as a reference.
5.Secure desired grinder position by tightening the level adjustment fastener
Clockwise.

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Safety Precautions
The Floor Grinder has been designed to minimize noise, vibration levels and to
provide maximum operator safety. However, incorrect use of the grinder may
cause serious injury and therefore the following precautions must be taken:
1.Do not use the grinder for longer than prescribed in your local environmental
working regulations, as the noise load from extensive daily use may result in
hearing damage.
2.Always use hearing protection, goggles, gloves, lung protection (NIOSH
mask or respirator as appropriate) and appropriate closed-toe footwear.
3.Do not modify the grinder in any manner. Do not use a machine that has
been modified by anyone other than the manufacturer or authorized dealers.
4.Do not add weight to the machine. Use different grinding plates to achieve
the desired grinding performance. Added weight can glaze tooling.
5.Do not operate the grinder with the grinding head raised any higher than
necessary. i.e. tipped back on handle.
6.Always be sure that folding handle latch is secure and has not become
loose during use.
7.During normal use the machine is exposed to vibration. Occasionally
check machine for bolts/nuts and wire connections which may have vibrated
loose.
8.Do not allow water or flammable materials to enter the interior of the
Motor.
9. Be aware of the area and people around you while working. Keep a 10’
safety buffer between the machine and other workers or sensitive items.
Respirable Silica Dust Warning
Grinding/cutting/drilling of masonry, concrete, metal and other materials can
generate dust, mists and fumes containing chemicals known to cause serious
or fatal injury or illness, such as respiratory disease, cancer, birth-defects or
other reproductive harm. If you are unfamiliar with the risks associated with
the particular process and/or material being cut or the composition of the tool
being used, review the Safety Data Sheets (SDS) and/or consult your employer,
the manufacturers/suppliers, governmental agencies such as OSHA and
NIOSH and other sources on hazardous materials.
Use engineering controls to control dust, mist and fumes at the source wherever
possible. Use good work practices and follow the recommendations of the
manufacturers/suppliers, OSHA/NIOSH, and occupational and trade
associations. Water should be used for dust suppression when wet
grinding/cutting/drilling is feasible. When the hazards from inhalation of dust,
mists and fumes cannot be eliminated, the operator and any bystanders should

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always wear a respirator approved by NIOSH/MSHA for the material being used.
Grinding/cutting/drilling of masonry, concrete and other materials containing
silica may generate dust or mists containing crystalline silica. Silica is a basic
component of sand, quartz, brick clay, granite and numerous other minerals
and rocks. Repeated and/or substantial inhalation of airborne crystalline silica
can cause serious or fatal respiratory diseases, including silicosis. The state of
California and other authorities have listed respirable crystalline silica as a
substance known to cause cancer. When grinding/cutting/drilling such materials,
always follow the respiratory precautions mentioned above.
Troubleshooting
Symptom
Possible Cause
Action
Grinder runs for short time
then stops
The electrical power
current limit screw is not
adjusted properly or the
contactor switch is in need
of replacement
Adjust the current limit
screw located in the
Schneider housing to the
appropriate setting. If this
does not remedy issue
order a new contactor
switch
Grinder runs but does not
perform adequately.
Tooling is not matched to
the application
Re-evaluate tooling
selection.
Grinder vibrates during use
Grinding plates not
correctly balanced or
grinding tools are
glazed/too hot
Replace grinding plates.
Grinding noise coming from
grinding head under no-load
operation.
Worn motor bearings or
drive coupling
Have machine evaluated
and serviced by authorized
service professional
Protective circuit breaker
opens while using,
repeatedly
Cord damage or excessive
motor heat from being
over-worked or low
voltage/amperage
Inspect all cords and
connections, replace any
damaged wire/cord or
connection, test incoming
power for proper
voltage/amperage
Maintenance & Inspection
Daily cleaning: The motor should always be kept clean. No water, or foreign
materials should be allowed to get into the interior of the motor.
Check operating amperage draw: While the motor is in operation, take care to
keep the operating amperage below maximum level.

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Operational sounds: During operation of the motor there must be no rubbing
sounds, squeals or other random noises. Stop the motor immediately and
restart after inspection and corrections have been made.
Check the security of the adjustable folding handle latch periodically. The wheel
bearings use sealed bearings and require no regular greasing.
Parts Diagram
Toolin g & attachment
Before every use
Electrical Connections
Every 8 hours of use
Inspect Machine
Entirely
Before every use
Tool Carrier Bolts
Before every use
Levelness
Before every use

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Number
Description
Qty
1
Handle
2
2
Upper arm
1
3
Switch assembly
1
4
Plug wire
1
5
Power wire
1
6
Electric motor
1
7
Motor carry Handle
1
8
M6X16 hexagon screws
4
9
Motor fixed mount
1
10
Motor connection plate
1
11
φ10 Flat washers
1
12
M8X25 hex screw
4
13
Dust shroud
1
14
M12X25 socket hexagon screw
2
15
Detachable shroud
1
16
Shroud plastic wear strip set（long）
1
17
Shroud plastic wear strip set（short）
1
18
motor driving sleeve
1
19
M10X30 hex screw
1
20
M10 nuts
2
21
φ10 Flat washers
2
22
flex coupling
1
23
M10X55 hex screw
2
24
M10X55 socket hexagon screw
2
25
connection disc
1
26
M8X12 socket hexagon screw
3
27
Dowel disc
1
28
Flexible conduit
1
29
Clipφ60
2
30
M10X30 hex screw
2
31
φ10 Flat washers
2
32
Wheel
2
33
M8X12 hexagon screws
2
34
Lift lever
1
35
Eccentric shaft
1
36
M12 locking screws
1

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37
cooling water pipe
1
38
Frame body part
1
39
M10 nuts
2
40
φ10 Flat washers
2
41
Connection sets
2
42
M12X25 Round socket hexagon screw
2
43
adjust handle
1
44
M8X20 hexagon screws
2
45
Positioning clamping claw buckle
1
46
Level bubble
1
NOT SHOWN IN DIAGRAM
47
Standard 30 Grit Medium Bond Tool
6
48
50’ twist lock extension cord
1
49
Owner’s Manual
1
50
30 Grit Medium Bond Grinding Plate 10”
Opt.
Optional Tools (available for purchase)
16, 30 Grit Medium, Soft, Hard, Super Soft Bond Tools
Small PCD Tool with Bar Marker Segment
Full PCD Tool with Dot Marker Segment
16, 30 grit 10” Grinding Plate, Various Layouts

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Customer’s Responsibility
It is the owner or manager’s responsibility that the user/operator
has sufficient knowledge about how to use the machine safely.
Supervisors and operators must have read and understood the
Operator’s Manual. They must be aware of:
• The machine’s safety instructions.
• How the machine is to be used and maintained.National
legislation could regulate the use of this machine. Find out
what legislation is applicable in the place where you work
before you start using the machine.  
• The machine’s range of applications and limitations.
• Inspecting the equipment prior to use and the immediate and
effective STOP of the machine if it exhibits any vibration,
erratic behavior or unusual noise.

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Terms and Conditions
Legacy Industrial Corp., Inc. herein referred to as Legacy (Seller) warrants that
each new unit manufactured by Legacy to be free from defects in material and
workmanship in normal use and service for a period of (3) months (except for
tooling, tool carrier, dust shroud, tires, handle grips, NO WARRANTY
AVAILABLE for these items) from date of shipment to the original owner.
Accessories or equipment furnished and installed on the product by Legacy but
manufactured by others, including, but not limited to motors, electrical
components, etc., shall carry the accessory manufacturers own warranty.
Legacy will, at its option, repair or replace, any part which shall appear to the
satisfaction of Legacy inspection to have been defective in material or
workmanship. Legacy reserves the right to modify, alter and improve any part
or parts without incurring any obligation to replace any part or parts previously
sold without such modified, altered or improved part or parts. This warranty is
for PARTS ONLY. Labor incurred to replace said parts is by the Seller and
must be replaced/serviced by a qualified entity. This warranty is in lieu of and
excludes all other warranties, expressed, implied, statutory, or otherwise
created under applicable law including, but not limited to the warranty of
merchantability and the warranty of fitness for a particular purpose in no event
shall seller or the manufacturer of the product be liable for special, incidental,
or consequential damages, including loss of profits, whether or not caused by
or resulting from the negligence of seller and/or the manufacturer of the product
unless specifically provided herein. In addition, this warranty shall not apply to
any products or portions there of which have been subjected to abuse, misuse,
improper installation, maintenance, or operation, electrical failure or abnormal
conditions and to products which have been tampered with, altered, modified,
repaired, reworked by anyone not qualified to do so or used in any manner
inconsistent with the provisions of the above or any instructions or
specifications provided with or for the product
FORCE MAJEURE
Seller’s obligation hereunder are subject to, and Seller shall not be held
responsible for, any delay or failure to make delivery of all or any part of the
Product due to labor difficulties, fires, casualties, accidents, acts of the
elements, acts of God, transportation difficulties, delays by a common carrier,
inability to obtain Product, materials or components or qualified labor sufficient
to timely perform part of or all of the obligations contained in these terms and
conditions, governmental regulations or actions, strikes, damage to or
destruction in whole or part of manufacturing plant, riots, terrorist attacks or
incidents, civil commotions, warlike conditions, flood , tidal waves, typhoon,
hurricane, earthquake, lightning, explosion or any other causes, contingencies
or circumstances within or without the United States not subject to the Seller’s

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control which prevent or hinder the manufacture or delivery of the Products or
make the fulfillment of these terms and conditions impracticable. In the event
of the occurrence of any of the foregoing, at the option of Seller, Seller shall be
excused from the performance under these Terms and Conditions, or the
performance of the Seller shall be correspondingly extended. This document
sets forth the terms and conditions pursuant to which the purchaser
(“Purchaser”) will purchase and Legacy (“Seller”) will sell the products,
accessories, attachments (collectively the” Products “) ordered by the
Purchaser. These terms and conditions shall govern and apply to the sale of
Seller’s Products to Purchaser, regardless of any terms and conditions
appearing on any purchase order or other forms submitted by Purchaser to
Seller, or the inconsistency of any terms therein and herein. whether or not they
are stated in any invoice for the Products. Unless otherwise specified herein,
all prices are exclusive of inland transportation, freight, insurance and other
costs and expenses relating to the shipment of the Products from the F.O.B.
point to Purchaser’s facility. Any prepayment by Seller of freight insurance and
other costs shall be for the account of Purchaser and shall be repaid to Seller.
DELIVERY, DAMAGES, SHORTAGES
Seller shall use reasonable efforts to attempt to cause the Products to be
delivered as provided for in these Terms & Conditions. Delivery to the initial
common carrier (LTL FREIGHT CARRIER) shall constitute the delivery to the
Purchaser. Sellers responsibility, in so far as transportation risks are concerned
ceases upon the delivery of the Products in good condition to such carrier at
the F.O.B. point and all the Products shall be shipped at the Purchaser’s risk.
Seller shall not be responsible or liable for any loss of income and/or profits, or
incidental, special, consequential damages resulting from Seller’s delayed
performance in shipment and delivery.
RETURN OF DEFECTIVE PRODUCTS
Defective or failed material shall be held at the Purchaser’s premises until
authorization has been granted by Seller to return or dispose of Products.
Products that are to be returned for final inspection must be returned Freight
Prepaid. Credit or replacement will be issued for material found to be defective
upon Seller’s inspection based on prices at time of purchase. Products sent
back for inspection that are found to be abused, misused, or forcefully damaged
will not be candidate for any parts warranty by Legacy without payment for said
repair or replacement by buyer.
RESOLD PRODUCT
Legacy offers no warranty to any party or parties other than the original
purchaser, unless authorized by Legacy at time of sale in writing. In which, the
2nd purchaser would receive the fitness specified herein these term and
conditions.
PRODUCTS ORDERED IN ERROR
Products may be returned, provided that claim is made and Seller is notified
within 7 days of receipt of Products, and the Products are in original buyer’s

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possession not more than 30 days prior to return, subject to Seller’s approval.
If Products are accepted for return, they must be Freight Prepaid and buyer will
be charged a minimum of 30% restocking charge, plus a charge back for
outbound freight charges if the original order was shipped prepaid. Returns are
not accepted for any Products that are specifically manufactured to meet the
buyer’s requirement of either specifications or quantity.
GOVERNING CLAUSE
These Terms & Conditions shall be governed by, and interpreted and enforced
in accordance with the laws of the state of Florida. Exclusive jurisdiction and
venue shall be with the courts service in Orange County, Florida.
AGREEMENTS
These Terms and Conditions constitute the entire agreement between Seller
and Purchaser as it relates to terms and conditions of sale, and supersedes
any and all prior oral or written agreements, correspondence, quotations or
understandings heretofore in force between the parties relating to the subject
matter hereof. There are no agreements between Seller and Purchaser with
respect to the Product herein except those specifically set forth in and made
part of these terms and conditions. Any additional terms, conditions and/or
prices are rejected by Seller. These terms and conditions may be modified,
cancelled or rescinded only by a written agreement of both parties executed by
their duly authorized agents. USE ONLY GENUINE LEGACY PARTS &
ACCESSORIES FOR SAFETY AND LONGEVITY.
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Legacy Industrial Corp.
13440 West Colonial Dr.
Suite # 2
Winter Garden, FL 34787
Ph: 888-652-0333
Email: [email protected]
Site: www.legacyindustrial.net