DiamaPro Systems HGP-5 User manual

OWNER’S MANUAL
HGP-5
VARIABLE SPEED GRINDER/POLISHER
OPERATION & MAINTENANCE MANUAL
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE

INTRODUCTION
DiamaPro Systems® HGP-5 Grinder/Polisher is designed and engineered
to provide handymen with a pleasant and enjoyable experience which
results in e󰀩cient productivity. Safety, performance and durability have
been given top priority in the design of this polisher to maintain quality
standards.
Disclaimer: DiamaPro Systems® and its a󰀩liates take no responsibility
for any damage, injury or death resulting from the incorrect or unsafe use
of this product. Use of this product should be undertaken by competent
persons only. It is the operator’s responsibility to ensure that the following
safety procedures are followed. If you are unsure, do not operate this
product.
Read all safety warnings and instructions. Failure to follow the warnings
and/or instructions may result in electrocution, re hazard, and/or serious
personal injury. The term POWER TOOL in this manual refers to all corded
and cordless power tools.
a) Keep the working space well lit, clean, and adequate for power tool
usage. Inadequate light and clutter work spaces can invite hazards.
b) Make sure that there aren’t any ammable or combustible liquids
or gases in the work environment such as lacquer, paint, benzene,
thinner, gasoline, and adhesive agents. Presence of these materials
in the working environment may cause sparks which can result in re
hazard.
c) Keep children and visitors away from the working area and your
power tools and equipment to avoid any accidents.
a) Ensure that outlet is compatible with power tool plug. Do not modify
the plug to make it work and never use any adapter plugs with
grounded power tools. Compatibility between outlet and plug will
minimize the risk of electrocution.
b) Don’t let your body parts get in contact with parts of the power tool or
equipment including radiators, pipes, ranges, and refrigeration enclo-
sures. If your body is earthed or grounded, the risk of electrocution
becomes high.
c) Never expose power tools to rain or water and never store them in
damp areas. Moisture entering your power tool will pose increase risk
of electrocution.
d) Never abuse the electrical cord of the tool. Do not pull it to unplug the
tool. Keep the cord away from heat, oil, sharp corners, and moving
parts. Entangled or damaged cords increase the chances of electro-
cution hazard.
e) When working outdoors, you may need extension cords to increase
your tool’s reach. In such situations, only use cords made and marked
for outdoor usage.
f) If you must operate a power tool in wet or damp work area, use a
Ground Fault Circuit Interrupter (GFCI) power supply. It will decrease
the risk of electrocution.
g) Ensure that your extension cord is in good condition and use the
adequate enough cord that can carry the current your polisher will
draw. An inadequate cord will cause a drop in in-line voltage which
may result in loss of power and overheating.
a) Be on alert during power tool operation and always know what you
are doing. Never use a power tool under the inuence of drugs, medi-
cation, or alcohol. Momentary lack of focus can invite serious hazards
when operating power tools.
b) Always use appropriate personal protective equipment. Use eye
protection, dust mask, non-skid safety shoes, hard hat and/or hearing
protection when conditions warrant them. This will signicantly reduce
the risk of personal injury.
c) Never roam around with the tool plugged in and your nger on the
trigger to avoid accidental starts. Switch it o󰀨 after every use. Before
picking up or connecting your tool to a power source, ensure it is
turned o󰀨.
GENERAL SAFETY
WORK AREA
ELECTRICAL SAFETY
d) Make it a habit to check and remove wrenches or keys from the
tool before turning it on. Mounted key or wrench can cause serious
damage.
e) Never try to overreach. Keep your posture comfortable and balanced
at all times so your can manage unexpected situations.
f) Keep loose clothing, body parts, and hair away from the parts of the
tool. It’s recommended to use protective hair covering.
g) If there are devices provided for dust extraction and collection, make
sure they are properly connected and functional. Use of dust collec-
tion systems can decrease the risk of dust related hazards.
a) Don’t try to extract additional performance from the tool by exerting
force. Let the power tool achieve its optimal performance naturally.
Always use the power tool that is appropriately powerful and ade-
quate for the job at hand.
b) Never use the tool if its switch doesn’t work. Get it repaired or re-
placed from an authorized service center. An unreliable switch can
prove to be dangerous.
c) Before storing the tool, make any replacements or periodical mainte-
nance, unplug the tool from the power source. This minimizes the risk
of accidental starts.
d) Power tools that are not in use shall be kept in a safe place where
they are not accessible to children. Never allow any person to operate
a power tool who is unfamiliar with these instructions. Power tools in
the hands of untrained operators are an open invitation to accidents.
e) Check your tool for alignment and binding of moving parts, damaged
parts, mounting, and any other aws that might a󰀨ect the operation
of your tool. Maintain your tools with care and repair or replace when
necessary.
f) Always use the power tool and its accessories according to the
instructions provided in this manual, nature of your job, and working
conditions. Using a power tool that’s not compatible with any of the
aforementioned criteria may result in a hazard.
a) All the accessories to be used with this tool must be rated for at least
3000 RPM.
b) Before operating the tool, always inspect the backing pad and polish-
ing discs and replace the damaged pads/discs if necessary.
c) When operating the polisher, always wear eye protection.
d) Never use the polisher with blades that are meant for cutting wood or
metal.
e) Keep your grip rm on the tool at all times.
f) Keep your body parts away from the moving parts of the polisher to
prevent personal injuries.
g) Ensure that work piece is well supported and stable.
h) Never touch the work piece right after polishing, it may be extremely
hot.
i) To prevent electrocution, use rubber gloves and boots.
j) Take care of the tool and do not let water or moisture seep into the
motor.
k) Always use a Ground Fault Circuit Interrupter (GFCI) with this tool.
a) Familiarize yourself with the power tool before using it. Learn how
to use it and its limitations along with the potential risks and hazards
associated with its use. Always read the instruction manual
thoroughly and carefully.
b) Always use the proper eye protection. Regular glasses are only
impact resistant; they don’t provide adequate level of safety as safety
glasses do.
c) If dust is being produced during operation, wear a dust mask to
prevent lung disease.
d) During long periods of polishing it is recommended to use ear
protection to prevent hearing loss.
e) Check your tool cords from time to time and, if necessary, get them
repaired or replaced from an authorized service center.
f) Before every use, make it a habit of checking the tool for any damag-
es especially parts intended for safety. If necessary, repair or replace
the damaged parts before continuing the operation. Following this
instruction will decrease re, electrocution, and injury hazards.
g) Keep this instruction manual accessible and make every person read
this carefully who intends to use this tool.
PERSONAL SAFETY
POWER TOOL SAFETY & CARE
TECHNICAL SAFETY
GUIDELINES BEFORE USE

On the back end of the polisher, there is a dial for speed adjustment. Refer
to the speed chart below for settings.
Don’t operate the tool at low speeds under a heavy load for
extended periods of time. This may cause the motor to overheat,
posing damage to your tool.
MODEL: HGP-5
POLISHING DISC DIAMETER: 5” Max
NO LOAD SPEED: 700-3000 RPM
POWER: 800W
WEIGHT (NET/GROSS): 5.7 / 6.4 lbs.
This DiamaPro Systems® Hand Grinder/Polisher can accommodate disc
sizes up to 5 inches (127mm). Don’t use discs larger than 5 inches with
this tool.
n Don’t exert force on the polisher. The weight of the polisher is enough
to supply adequate amount of pressure to get the best results. Let the
pad and polisher do their work. Exerting extra force will put strain on
the motor, wear o󰀨 the polishing pad quickly, and reduce the
polishing speed. Additional strain on the motor can cause overheating,
thus damaging the polisher.
n Never polish a specic area for long periods, otherwise 50 and 100 grit
polishing pads will remove more material than you intend to, making
the surface uneven.
n Don’t apply extra force as it may overheat the motor, causing damage
to the tool.
n If the motor heats up, switch o󰀨 the polisher and wait until the motor
comes to a complete halt. Then remove it from the work piece. Take
your hand away from the venting duct, remove the polishing disc and
switch it back on and run the polisher free without any load until the
motor cools down.
Selecting the right polishing pad with correct grit for the task at hand plays
an important role in achieving high quality nish. DiamaPro Systems® has
developed polishing pads for the HGP-5 model bonded to achieve
excellent results when polishing concrete or stone.
Generally, when using diamond polishing pads, coarse grit removes the
most material and ne grits produce the best nish. The condition of the
surface to be polished determines which grit will do the best job. If the sur-
face is rough, start with a coarse grit and grind until the surface is uniform.
Then use medium grit to remove scratches left by the coarser grit.
At last, use ner grits for nishing the surface. Always continue polishing
with each grit until the surface is uniform.
Your polisher packaging includes:
nHGP-5 Grinder / Polisher
n Shaft Wrench
nSide Handle
n Owner’s Manual
Some dust produced by power polishing, sawing, grinding, drilling, and
other construction activities contains chemicals known (to the State of Cal-
ifornia) to cause cancer, birth defects, or other reproductive harm. Some
examples of these chemicals are:
• Lead, from lead based paints
• Crystalline silica, from bricks and cement and other masonry products
• Arsenic and chromium, from chemically treated lumber
Your risk from these exposures varies depending on how often you do
this type of work. To reduce your exposure to these chemicals, work in a
well-ventilated area and work with approved safety equipment, such as
dust masks that are specically designed to lter out microscopic particles.
SPECIFICATIONS
DISC CAPACITY
OPERATION
POLISHING PADS SELECTION
PACKAGE INCLUDES
CALIFORNIA PROPOSITION 65
SPEED ADJUSTMENT
Number Approximate
1
2
3
4
5
6
RPM
700
1100
1600
2100
2500
3000
Speed Adjustment vs. RPM

DiamaPro Systems®
3343 Peachtree Road NE
Suite 145 #24
Atlanta, GA 30326
470-977-2323
Schematic & Parts List
S. No.
1
2
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8
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24
25
26
Description
Output Shaft
Woodru󰀨 Key
Screw
Dust Cap
Front Cover
Bearing
Gland
Gland Screw
Flat Washer
Gear (big)
Screw
Bearing
Clamp
Roller Pin
Self-Lock Spring
Self-Lock
Gear Cap
Screw
Clamp
Gear (small)
Bearing
Small Shaft
Spur Pinion
Bearing Retainer
Bearing
Rotor
Qty.
1
1
4
1
1
2
1
3
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
S. No.
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46
47
48
49
50
51
Description
Magnet-Wheel
Bearing
Bearing-Housing
Wind Cover
Screw
Stator
Housing
Flat Washer
Screw
Switch Lever Button
Switch Lever
Screw
Cable Disc
Switch
Capacitor
Screw
Rear Cover
Screw
Cable Sleeve
Cable
Inductor
Rear Cover
Speed Control Switch
Carbon Brush
Copper Brush Holder
Qty.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
1