Onfloor PRO SERIES 16 Guide

PN 286516 - Pro Series 16 Multi-Surface Machine - Printed in USA 07/2013
SAFETY, OPERATION MANUAL & PARTS LIST
PRO SERIES 16”
MULTI-SURFACE
FLOOR MACHINE
This unit is intended for commercial use.
PAGE 1
This floor machine will afford you many years of
trouble free operating satisfaction if it is given
proper care. All parts have passed rigid quality
control standards before being assembled to
produce the finished product. Prior to packag-
ing, units are again inspected for assurance of
flawless operation.
This floor machine was protectively packed to
prevent damage in shipment. We recommend
that upon delivery, remove the unit from its
carton and carefully inspect it for any possible
damage in transit. A warranty card is affixed to
the handle. It is your responsibility to fill it out
and send it to our office to register your
purchase and start your warranty. Failure to
send us this card in one week upon receipt of
the machine may void the warranty.
If damage is discovered, immediately notify
the transportation company that delivered
your floor machine. As a shipper, we are unable
to act upon any claim for concealed damage.
You must originate any claim within 5 days of
delivery.
These instructions are for your protection and
information. PLEASE READ CAREFULLY!
Failure to follow these precautions could result
in injury or discomfort.
Treat this floor machine as you would any other
high grade precision made product. Throwing,
dropping, unreasonable bumping across thresh-
olds and other misuse may result in a damaged
unit and invalidate the warranty.
PLEASE READ CAREFULLY BEFORE OPERATING
SAVE THESE INSTRUCTIONS
READ & FOLLOW ALL
INSTRUCTIONS, WARNINGS & CAUTIONS
BEFORE USING THIS GRINDING MACHINE

PAGE 2
1) Unplug the machine.
2) After each use, wipe off machine with a clean
cloth.
3) Empty the vacuum you are using in accordance
with specific manufacturer’s safety & operation
instructions.
4) Check for loose parts and fasteners.
5) Check the power cord for any breaks in the wire.
Breaks will most likely occur near the plug or switch.
Repair or replace any breaks immediately.
This machine is designed for surfacing concrete and sanding wood floors.
All operators and maintenance personnel should read and understand
the safety procedures with this floor machine.
CAUTION:
1) All personnel in the immediate work area must
wear safety glasses with side shields whenever the
machine is in operation. Protective clothing is also
recommended. Long sleeve shirts and safety shoes
should be worn. Avoid wearing loose clothing.
2) DO NOT attempt to service or replace attachments
while the machine is running or connected to a power
source.
3) DO NOT operate this floor machine in the rain or
in areas where liquids could enter the electrical com-
ponents of the machine.
4) Keep the power cord away from the revolving heads
to avoid damage.
5) Check main power supply to assure that you are con-
necting the equipment to a proper dedicated service.
This machine can be used with a variety of vacuums to
pick up wood and concrete dust.
Separate dedicated power source for the machine
and vacuum is recommended.
The vacuum hose must be attached to the 1
1
/ 2
”
hose barb on the outer bowl of the floor machine.
During operation, periodically check the vacuum.
When the cloth or paper filter bag is
3
/ 4 full or dust
is forming around the bottom of the machine, it MUST
be emptied.
Operation of the vacuum cleaner must be in accor-
dance with specific manufacturer’s safety and
operation instructions.
IF THIS MACHINE IS USED FOR SANDING, DO NOT LEAVE SAWDUST IN THE
FILTER BAG WHEN THE MACHINE IS NOT IN USE. THIS IS A FIRE HAZARD.
WARNING:
BELTCHANGING INSTRUCTIONS
VACUUM OPERATING INSTRUCTIONS
GENERAL SAFETY PRECAUTIONS
MACHINE MAINTENANCE
1) Unplug the motor power cord from the handle.
2) Pull the speed pin from the handle and remove the
handle. Carefully set handle aside.
3) Turn the machine chassis upside down on a table
resting on the motor cover.
4) Remove pads/attachments. (See Page 3)
5) Remove the nine flat head screws and beveled
washers from cover plate.
6) Remove the cover plate from inner bowl.
7) Vacuum up the dust and debris from inner bowl.
8) Remove old belt or belts by pulling upwards and and
roll off using a screwdriver while turning the pulley.
9) Roll new belt or belts back on the pulley.
10) Reassemble the machine reversing the above
steps.

PAGE 3
This floor machine must be
grounded. If it should malfunction
or breakdown, grounding provides
a path of least resistance for elec-
trical current to reduce the risk of
electric shock.
This machine is equipped with an
equipment-grounded plug.
The plug must be inserted into an
appropriate outlet that is proper-
ly installed and grounded in
accordance with all local codes
and ordinances
If repair or replacement of the
cord or plug is necessary, DO NOT
connect the grounding wire to
either flat blade terminal. The
insulated wire with an outer
surface that is green with or with-
out yellow stripes is the grounding
wire.
To reduce the risk of fire, electric shock or injury;
Read all instructions before using this floor machine.
WARNING:
Improper use of the grounding plug can result in a risk of electrical shock.
DANGER:
IMPORTANT SAFETY INSTRUCTIONS
GROUNDING INSTRUCTIONS & METHODS
Improper connection of the equipment-grounding conductor can result in a risk of electrical 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 by a qualified electrician.
NOTE: In Canada, use of a temporary adaptor is not permitted by the Canadian Electrical Code.
WARNING:
1) DO NOT leave the floor machine plugged
in when not in use. Unplug from the outlet
when not in use and/or before servicing.
2) Electric shock could occur if exposed to
rain. Store indoors.
3) This is NOT a toy. Close attention is nec-
essary when used around or near children.
4) Use only as described in this manual. Use
only manufacturer's recommended attach-
ments.
5) DO NOT use with damaged cord plug. If
the floor machine is not working as it should
because it has been dropped, damaged, left
outdoors, or dropped into water, contact the
manufacturer or authorized service center.
6) DO NOT handle the plug or operate with
wet hands.
7) DO NOT pull or carry by cord, use power
cord as a handle, close a door on cord, or
pull cord around sharp edges or corners. DO
NOT run floor machine over the cord. Keep
cord away from heated surfaces.
8) DO NOT unplug by pulling on cord. To
unplug, grasp plug, not the power cord.
9) DO NOT put any object into motor open-
ings.
10) Keep hair, loose clothing, fingers and all
parts of body away from moving parts.
11) DO NOT use an optional vacuum with-
out the manufacturer’s filters in place.
12) DO NOT operate where anesthetics and
oxygen are used.
13) DO NOT use an extension cord.
14) DO NOT use around flammable or com-
bustible liquids such as gasoline or use in
areas where they may be present.
15) Replace damaged or worn parts immedi-
ately with genuine Grind ’N Go equipment
parts to maintain safety and protect your lim-
ited warranty.
16) Floor sanding can result in an explo-
sive mixture of fine dust and air. Use a
floor sanding machine only in a well ven-
tilated area.
17) DO NOT leave sawdust in the filter
bag when sander is not in use, this is a
fire hazard.
This floor machine must be connected to
a properly grounded outlet only. (See
grounding method below.)
This floor sander is for use on a nominal 120 volt
circuit, and has a grounding plug that looks like the
plug illustrated in (Fig A). A temporary adaptor that
looks like the adaptor illustrated in (Fig B & C) may
be used to connect the plug to a 2-pole receptacle
as shown in (Fig A) if a properly grounded outlet is
not available.
The temporary adaptor should be used only until a
properly grounded outlet (Fig A) can be installed by
a qualified electrician. The green color rigid ear, lug,
or like extending from the adaptor must be connect-
ed to a permanent ground such as a properly ground-
ed outlet box cover. Whenever the adaptor is used,
it must be held in place by the metal screw (Fig C).

PAGE 4
DO NOT attempt to operate this unit if the machine is not fully assembled.
When servicing or replacing accessories turn OFF the machine and
disconnect from the power source.
Prior to operating the machine, tilt machine back on transport wheels,
turn ON the machine and carefully lower the machine onto the working surface.
CAUTION:
1) Clear the floor of any materials or objects.
2) Select and install the accessory set required for the
job. (See above for installation instructions.)
3) Move handle from the upright “storage” position to
the angled “operating” position and lock in place with
the quick release pin.
4) Place your hands on the handle grips tilt sander
back on the transport wheels.
5) Push ON/OFF switch to the ‘ON’ position.
6) When the machine is running, carefully lower it
onto the working surface and release the trigger lock.
7) Push ON/OFF switch to ‘OFF’. Speed of the motor
can be controlled using the speed control knob.
8) Move the machine side-to-side while maintaining a
steady, consistent pace with the machine.
9) When not in use, a set of attachments MUST be left
on the sander to protect the heads.
Note: If the machine unexpectedly shuts down due to
a circuit overload, before restarting wait 2 minutes,
then reset the circuit breaker.
OPERATING INSTRUCTIONS
WARRANTY INFORMATION
We guarantee to the original purchaser this
floor machine against defects in material and
workmanship for a period of 1 year from the
date of delivery. Please note the following
conditions pertaining to this warranty.
1) This warranty does not apply to any repair
arising by reason of misuse, neglect, or abuse,
or to proprietary parts.
2) Applies only to the original owner and is not
transferable.
3) Machine will not have been dismantled or
tampered with in any way.
4) Covered components proven defective will
be repaired or replaced at no charge. Covered
components include motors, bearings, belts
and switches.
5) This Warranty is in lieu of and excludes every
condition or warranty not herein expressly
set out and all liability for any form of
consequential loss or damage is hereby
expressly excluded.
6) This Warranty is limited to repair or
replacement of covered components and
reasonable labor expenses.

PAGE 5
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Before Installation Or Changing
Attachments:
1) Unplug the machine from the wall outlet.
Note: When power is disconnected from machine for
any reason, wait a FULL TWO MINUTES before
reconnecting power. Failure to follow this step may
cause damage to the VFD.
2) Ensure handle is in the storage position (straight up)
and locked in place with the quick release pin.
3) Tilt machine back by bracing it with your foot until
the handle is laying on the floor and the three heads
are fully exposed.
Note: It is recommended that a towel or pad is placed
under the machine to protect the floor.
Changing and Installation of Attachments
When installing or removing attachments, always wear
protective gloves.
1) Position the first attachment head at 12 o’clock.
2) Using both hands, reach beneath the bottom side of
the attachment and pull up towards yourself to free it
from the machine.
3) Select the attachment required for the job, and line
up the holes on the attachment with the four metal
pins protruding from each of the three heads.
4) Push attachments on by hand and if necessary, care-
fully tap it into place with a rubber mallet.
5) Repeat steps 1 thru 4 with the remaining 2 attach-
ments.
6) Carefully raise the handle, supporting the axle with
your foot to control the head of the machine as it is
placed on the floor.
7) Since the attachments are different heights, you
may need to adjust the dust skirt to make sure it is
level with the attachments. This will ensure clean and
virtually dust-free operation.
9) To adjust skirt, align the skirt with the center of the
machine and wrap it around.
10) Move the handle back to the operating position
and lock in place with the quick release pin.
When installing or changing the accessories, turn OFF the machine
and disconnect the power cord from the electrical outlet. Wait
at least two minutes before restoring power
CAUTION:

PAGE 6
COWLING MOTOR ENCLOSRE
________________________________
Ref Part Description Qty Part
No No
_________________________________
1 Weldment, cowling 1 281735
2 Weldment, VFD mount 1 281808
3 Washer, rubber 4 282049
4 VFD, 115 Volt 1 281816
5 Circuit Breaker 32A 1 282200
6 Box, Breaker 1 282030
7 Grip Cable Mesh 1 218049
8 Bracket - Z 1 281344

PAGE 7
16” HANDLE & BASE ASSEMBLYDRAWING & PARTS LIST
HANDLE ASSEMBLY
_________________________________
Ref Part Description Qty Part
No No
_________________________________
1 Rubber Handle Grip 2 490180
2 Plate, back 1 281903
3 Decal, Instrument Panel 1 285544
4 Handle Assembly 1 281875
5 Quick Release Pin w/Cable 1 456896
6 Bronze Bushing 1 491055
7 .37-16 X
1
/
2
” Shoulder Bolt 1 491063
8 Motor Cord w/Female Plug 1 490210
9 Wheel Base Assembly 1 490814
10 6” X 2” Wheel 2 490903
11 Palnut 2 490881
12 Switch Box Plate 1 490105
_________________________________
Ref Part Description Qty Part
___________________________________________________
1 Phenolic Knob 1 285374
2 Cover, Switch 2 285714
3 Decal, Instrument Panel 1 285544
4 Plate, back 1 281903
5 Switch, Toggle 2 285366
6 Wiring Harness 1 281883

PAGE 8
_________________________________
Ref Part Description Qty Part
No No
_________________________________
11
1
/ 2
HP Motor (1760 RPM) 1 280992
6 Bowl Handle 2 490385
7
1
/ 4
-20 X
5
/ 8
” Screw 4 457310
8 .38-16 X 1” Bolt 4 368830
9 16” Outer Bowl Assembly 1 281867
10 13/4” External Snap Ring 1 491292
11 Rubber Dust Skirt 1 491640
12 Velcro Strip 1 491659
13 20# Weight (Optional) 1 491691
14 Nyloc Nut 3 380784
15 Weight Knob 3 491632
16
1
/ 4 -20 X .75” Screw 3 342831
17 Felt Gasket 1 450073
18 .37 Lockwasher 4 368849
16” OUTER BOWL DRAWING & PARTS LIST

PAGE 9
16” INNER BOWL DRAWING & PARTS LIST
___________________________________
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___________________________________
1 2.87” Internal Snap Ring 1 490598
2 Bearing (6009-2RS) 2 490563
3 Large Bearing Spacer 1 490571
4 Outer Pulley Shaft 3 490547
5 16” Inner Bowl 1 490407
6 Center Cog Pulley 1 494836
7 Shaft Spacer 3 490555
81
1
/ 2 “ Internal Snap Ring 3 490466
9 Ball Bearing w/Seals 6 464910
10 Small Bearing Spacer 3 490474
11 Flange 1 490989
12 Low Profile Bolt 1 490997
13 2.76” ID x 6.00” OD Ring 3 222828
14 #10-32 x .5 Phillips Screw 9 377201
___________________________________
___________________________________
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___________________________________
15 Accessory Pins 12 490458
16 .62-11 Nylock Nut 3 490628
17 Washer 3 490636
18 Felt Gasket 3 491373
19 Aluminum Ring 3 490652
20 Tubular Rivet 12 394068
21 .25-20 x .5 Phillips Screw 9 331740
22 #14, .43”OD Lockwasher 9 491012
23 Aluminum Cover Plate 1 490644
24a Belt 210-L050 (OF16L) 3 494089
24b Belt 210-L050 (OF16LG) 3 223514
25 48 High Tooth Pulley 1 490512
26 48 Middle Tooth Pulley 1 490490
27 48 Low Tooth Pulley 1 490415
___________________________________

PAGE 10

PAGE 11

PAGE 12

PAGE 13

PAGE 14
PROBLEM: Motor will not run.
POSSIBLE CAUSE POSSIBLE SOLUTION
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PROBLEM: Machine bogs down and runs slow.
POSSIBLE CAUSE POSSIBLE SOLUTION
1) Defective capacitor or switch. 1) Have machine checked by an authorized
service center.
2) Circuit may be overloaded with 2) Plug floor machine into a dedicated power outlet. If the
more than one appliance. problem still exists there could be a short. Have the
floor machine checked by an authorized service center.
3) Low line voltage in building. 3) If wiring is old in the building have voltage
checked by the power company.
4) Speed control knob set too slow. 4) Change position of speed control knob.
PROBLEM: Motor runs, driver will not rotate.
POSSIBLE CAUSE POSSIBLE SOLUTION
1) Belt is broken. 1) Replace belt.
PROBLEM: Noisy machine or vibration.
POSSIBLE CAUSE POSSIBLE SOLUTION
1) Defective motor. 1) Contact the manufacturer or authorized service center.
2) Attachment is not level or 2) Level attachment and make sure all fasteners
securely attached. are secure.
TROUBLESHOOTING GUIDE

PAGE 15
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intentionally
left blank.

PN 286516 - Pro Series 16 Multi-Surface Machine - Printed in USA 07/2013
®
PAGE 16
777 South Street,P.O. Box 2310, Newburgh, New York 12550-0606
TEL: [phone] / FAX: [phone]
www.onfloor.com / [e-mail]