Mercury Floor Machines L-15E User manual

110 South Van Brunt Street
Englewood, NJ 07631
Phone [phone]
Toll Free [phone]
FAX [phone]
www.mercuryfloormachines.com
Mercury Floor Machines, Inc
New Equipment Warranty
Limited Warranty
Mercury Floor Machines, Inc. warrants new equipment against defects in material and
workmanship under normal use and service to the original purchaser. Any statutory implied
warranties, including any warranty of merchantability or fitness for a particular purpose, are
expressly limited to the duration of this written warranty. Mercury Floor Machines, Inc. will not be
liable for any other damages, including but not limited to indirect or special consequential damages
arising out of or in connection with the furnishing, performance, use or inability to use the machine.
This remedy shall be the exclusive remedy of the purchaser. The warranty period is subject to the
conditions stated below.
5 Years - Motor and Gearbox. 1 Year- Service Labor
Mercury Floor Machines Inc. warrants electric motors and transmission gearboxes on all Mercury
floor machines to be free from defects in material and workmanship, under normal use and service
for five (5) years to the original purchaser. Parts replaced or repaired under this warranty are
warrantied for the remainder of the original warranty period. Service labor charges are covered for
one (1) year from the date of purchase, when performed by a Mercury authorized-service provider.
Freight charges to and from this service providers will be covered for 90 days from the purchase
date. After this 90 day period, these freight charges will be paid by the equipment owner. Travel
expenses are not covered.
Wear Items on All Machines
Critical Wear Items - bearings, capacitors, clutches, pulleys, rectifiers, relays, switches, wheels,
tires and casters are warranted for manufacturing defects for one (1) year from the purchase date.
Normal Wear Items - belts, brushes, bumpers, carbon brushes, cords, finishes, squeegees,
actuating cables, and gaskets are warranted for manufacturing defects for ninety (90) days from
the purchase date.
All warrantees of motors and associated components will be voided; if the machine is used as a
floor sander; if the machine is serviced by anyone other than a Mercury-authorized service
provider; if the machine is mechanically modified; or if the machine is misused or abused.
The warranty starts on the purchase date by the original purchaser from an authorized Mercury
Floor Machines, Inc. distributor, subject to proof of purchase. The Machine Registration Card must
be completed and returned immediately at the time of purchase. If proof of purchase cannot be
identified, the warranty start date is 90 days after the date of sale to an authorized Mercury Floor
Machines, Inc. Distributor.
ISSA
The Experts
on Cleaning and Maintenance
®
MEMBER
MEMBER
SINCE 1958
©2009 Mercury Floor Machines, Inc.
MERCURY LoBoy
175 RPM Super Heavy Duty Floor Machine
1.5 HP / 15”, 17”, 19”, 20” and 21”

YES
NO
NO
NO
NO
NO
(2) LO-BOY Super Heavy-Duty Floor Machine
Scrubbing brushes are available with a range of bristle types - - from the
softest for the highest gloss floors, to the most aggressive for the heaviest
soils. Match your brush to the floor as you match a detergent with the soils.
Nylon is used for general scrubbing. Because Nylon
softens when wet, it is great for gentle scrubbing,
mopping, and polishing of decorative floors. Nylon will
not scratch tile, terrazzo or coated surfaces.
Nylon brushes are durable and long lasting.
Polypropylene is a common choice for general
purpose scrubbing and works well on both concrete
and on coated floors. Polypropylene brushes typically
cost less than nylon, but do not last as long.
Non-Scuff Poly is a finer diameter (0.015-0.018")
filament used for lighter duty scrubbing conditions and
on waxed or finished floors.
Bassine is a soft natural fiber. The end of the bristle
splits or “flags” to build a polishing surface.
Union Mix is a mixture of Bassine and Tampico
(another natural fiber). The mixture is stiffer than
bassine alone and is used by more traditional
cleaners for scrubbing. Often replaced by poly.
Soft Abrasive Bristle is a 0.018” Nylon filament
extruded with a 500 grade grit. For gentle scrubbing.
As aggressive as a white scrub pad.
Daily Abrasive Bristle is a 0.035” Nylon filament with
180 grade grit. For daily scrubbing of resilient tile and
finished floors. As aggressive as a red scrub pad.
Stripper Abrasive Bristle is a 0.022” Nylon filament
with 120 grade grit. For aggressive scrubbing and light
stripping of resilient floors, terrazzo, and concrete.
As aggressive as a blue scrub pad.
Heavy Duty Stripper Abrasive Bristle is a 0.050”
Nylon filament with 80 grade grit. For very aggressive
scrubbing and stripping of concrete, brick, and quarry
tile. As aggressive as a black scrub / strip pad.
5.2 Scrubbing Brush Filaments
LO-BOY Super Heavy-Duty Floor Machine (11)
1.0 Safe Operating Conditions
READ THIS MANUAL BEFORE USING THIS FLOOR MACHINE.
KNOW THE PROPER OPERATION, CORRECT APPLICATIONS
AND THE LIMITATIONS OF THIS EQUIPMENT BEFORE USE.
Reduce the risk of fire, electric shock, or injury:
!This floor machine is designed for indoor use only.
Do not use outdoors. Do not expose to rain.
!Do not wash motor with flowing water. If motor
gets wet, seek authorized service.
!Keep the vents on this air-cooled motor free of
debris. Do not operate with the motor covered or
with vents blocked.
!Never operate this floor machine near flammable dusts, liquids
or vapors. Never use flammable solvents as a cleaning agent.
Engine sparks and operating heat can cause a fire.
!Never handle electrical equipment with wet hands.
Never operate this floor machine with bare feet.
!Unplug the floor machine when not in use
and when servicing the equipment. To
unplug, grasp the plug, not the cord.
!Do not operate a floor machine with damaged
handle controls, cord, or plug. If the equipment
is not performing properly, seek repair from a
qualified service supplier.
!This floor machine is constructed with electrical
grounding at the plug. Operate only when
connected to a properly grounded outlet.
See section 1.2 for grounding details.
!Prevent electrical cord abuse. Do not close a
door upon the cord, drive equipment over it,
or run the floor machine over it. Do not
expose the cord to hot surfaces. Do not lift,
pull or carry this floor machine by the cord.
!Never operate the floor machine over sharp
objects that can be thrown out and harm the
operator and damage the floor. Sweep hard-
floors before scrubbing or buffing. Vacuum
clean carpets before shampooing or bonnet
cleaning.
!Train your staff in the proper use of this floor machine.

Figure 1
Figure 2
1.1 Electric Power
This floor machine operates on a 15 amp nominal 115V,
60 HZ, A.C. power circuit. (Motors may be custom wired
at the factory for 220 V, 50 Hz international operation.)
The amp, hertz, and voltage ratings are listed on the
motor spec label found on each machine. Using
voltages above or below those indicated on the spec
label will damage the motor. Always check your local
voltage requirements.
This floor machine must be grounded while in use to
protect the operator from electrical shock. This floor
machine is built with a 3-wire cord and a 3-prong
grounding type plug (Figure 1) to fit the properly
grounded receptacle.
Before using this floor machine, make sure a
properly grounded, 3-hole electrical outlet is
available. If not, as in some older facilities, use an
adapter for connecting a 3-prong plug to a 2-prong
receptacle (Figure 2) to ground to the outlet
chassis.
IMPORTANT!! This adaptor may not be
used in Canada.
IMPORTANT!! Never cut off the grounding prong for use
in a 2-prong outlet. By doing so, you have cut off your
protection from electrical shock.
Never assume that all 3-hole outlets are properly grounded.
Never assume that an adaptor connection (as in Figure 2) is
properly grounded. Check the outlet with a ground fault
interrupter device which quickly indicates if a ground is
connected. Correct a faulty grounding before proceeding.
This floor machine is shipped with a 50 foot (15 M) long safety
cord which plugs directly into an approved outlet. The use of an
extension cord is not recommended.
1.2 Grounding Instruction
1.3 Extension Cords
SIZE
2
1
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4
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5.0 Brush Construction
Your new floor machine provides reliable, efficient, safe power to your
scrubbing brush. To get the best results, you need to use
a brush of the best design and construction.
Your floor machine is built with a “B” style
drive plug (1). The height and width of the ears
on the plug will match a “B”-style or a “Universal”
clutch plate (2) mounted on the brush block.
The brush block (3) is constructed
of molded plastic or thick plywood.
Use a brush with a block diameter
2” less than your machine apron size.
The bristle material (4) that actually
does the scrubbing is typically 1-1/2” to 2” long.
Holes are drilled in the block and bundles of
bristles are folded in half, forced into the
hole and stapled in place (staple-set).
When the bristles wear down to
less than 1/2” long, they have little
flexibility and it’s time to replace. Bristle
materials are described on page 11.
5.1 Pad Driver Construction
If you scrub or polish with a non-woven pad,
use a pad driver to connect the pad to the
machine.
The brush block (3) is constructed of molded
plastic, fit with shorter, stiffer, pad-holding
bristles (5) or “velcro-like” pad-holding
hooks (6) and use a riser (7) to create
extra clearance between the block and the
machine apron. With this construction use
a pad driver with block diameter 1” less
than your machine apron size.
Machine Apron Size 15” 17” 19” 20” 21”
Pad Driver - with 3/4” Riser 14” 16” 18” 20” 20”
Brush - with NO RISER 13” 15” 17” 19” 19”
(10) LO-BOY Super Heavy-Duty Floor Machine LO-BOY Super Heavy-Duty Floor Machine (3)

To transport this floor machine from the janitor’s closet to the work area:
!Lock the handle in the “up” position. Wind the cord around the
handles and the bottom cord hook.
!Tip the machine back onto the transport wheels.
Push or pull the machine by the handle,
not by the cord or any other part of the
machine. Travel carefully.
4.0 Troubleshooting
Never operate this floor machine when the equipment is not performing as
expected or when any part is visibly damaged. The cause and solution for
some basic problems are described below. When repair is needed, take
the equipment to an authorized repair service center.
4.1 Floor machine will not run
- Circuit breaker tripped in building. Check and reset.
-Equipment unplugged. Check plug at wall and at machine base.
Plug in.
- Power cord failure. Test with a working power cord. Lock the
handle up and tip the motor back. Unplug the cord at the motor
and plug the motor into your working power cord.
IMPORTANT! THIS IS JUST FOR TESTING. When you do this, you
have removed the safety handle controls from the circuit and you
are sending power directly to the motor. If the motor now spins,
the problem is in the cord or the handle assembly. Seek
authorized repair service.
If the motor still does not spin, the problem is either in the male
connection at the motor base or in the motor. Seek authorized
repair service.
- Motor sparks or smokes. Seek authorized repair service.
4.2 Electrical shock to operator
-Equipment wiring failure or electrical short in the machine. Seek
authorized service.
- Poor grounding or no grounding. Test the outlet with a ground fault
interrupter. Retain a certified electrician to inspect and repair
grounding. NEVER clip off the ground plug on your cord.
- Repeated circuit breaking. High amp draw and circuit breaking can
be an electrical or mechanical problem. Seek authorized repair
service.
4.3 High Vibration
- Pad not centered. Tip machine back and re-center the pad.
- Unevenly wear or warp to pad or brushes. Replace.
- Machine chassis damaged by dropping. Replace.
3.2 Transport
(4) LO-BOY Super Heavy-Duty Floor Machine LO-BOY Super Heavy-Duty Floor Machine (9)
2.0 Mount the Handle
This floor machine is shipped from the factory with the handle
unattached. You will need two 7/16” wrenches to complete the
assembly.
Remove the handle and mounting hardware from its carton. Bolts,
nuts, washers and the locking lever assembly are in the plastic bag
attached to the handle.
1. Mount the handle on the chassis.
Align the handle with the yoke (1) over
the mount (2) on the buffer chassis.
The power cord will be facing the motor.
Place a flat washer (4) on a 3” bolt (3),
then place the bolt through the holes in
the yoke and the mount. Place another
washer on the bolt and secure with the
locking nut (5).
2. Connect the support braces to
the handle.
Tip the handle “up”. The handle
mounting collar (7) is designed to slide
freely up and down the handle tube,
allowing the handle to be adjusted for
the comfortable operation of all users.
Line up the mounting collar with the
upper holes in the two bent handle
braces (6).
!Place the spacer with the rectangular
hole (12) onto the locking lever shaft
(11). The spacer must fit completely
onto the rectangular neck of the lever
shaft.
!Insert the shaft through the hole in the
left handle brace (6), mounting collar
(7), and right handle brace (8).
!Place a spacer (9) on the shaft.
!Place the split washer (10) on the shaft
!Place the locking wing nut (13) on the shaft.
!Tighten and adjust the wing nut. When correctly installed, the
collar slides easily when the cam-engineered locking lever is “up”,
but is firmly fixed when the lever is “down”.
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2.1 Attach the Power Cord
The triple-wire grounded power cord has been
factory-installed into the handle tube. Plug the male
connector (9) coming out of the motor housing into
the female connector (10) coming out of the end of
the handle tube.
Now, plug the end of the 50 foot cord into a
grounded power outlet. Squeeze the triggers on the
handle and check for power to the motor.
2.2 Install the Brush or Pad Driver
A brush or pad driver mounts onto your floor
machine with a “B” style Universal clutch plate.
Lock the machine handle in the “up” position
and tip the floor machine back fully.
Slide the brush or pad driver clutch
plate (11)over the drive plug (12).
Quickly spin the brush counter-clockwise to
lock the brush onto the drive plug.
Now, lower the machine back onto the brush.
You’re ready to go to work.
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12
11
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LO-BOY Super Heavy-Duty Floor Machine (5)
LIFT
RIGHT
(8) LO-BOY Super Heavy-Duty Floor Machine
3.0 Operating Tips
!For indoor use only.
!Sweep abrasive soils before scrubbing.
!While the brush or pad driver is spinning, keep the floor
machine moving to avoid “donut” burns on the floor.
!To start operation:
- Unlock the handle by raising the locking lever.
- Lower the handle to a comfortable position,
typically waist height.
- Relock the handle by pushing the lever down.
NEVER OPERATE THE MACHINE WITH THE
HANDLE UNLOCKED.
- This floor machine has a
high torque motor. Hold the
machine firmly with both
hands when starting up.
- Push the red safety interlock
switch forward to unlock the
dual triggers.
- Squeeze the dual triggers to
release power to the motor.
Once power is on, either trigger will keep
power to the motor.
- To stop the floor machine, release both triggers.
!The spinning brush helps move the floor machine.
(Lift the handle slightly to work to the right. Push
the handle down slightly to work to the left.)
3.1 To store your machine
!Lock the handle in the “up” position. Tilt the machine
back and remove the pad driver or brush.
!Wind the cord around the handles and the bottom
cord hook.
!Wash brushes or pads and hang to dry.
!Never store machine standing on the brush.
!Inspect and maintain equipment on a regular schedule
for best results.
]Check and clean pads after each operation. Remove soil
and chemical buildup. Replace worn or damaged pads.
]Check the triggers and switches for proper operation.
]Repair or replace damaged skirts and bumpers.
]Use air pressure or vacuum to remove dust and debris
from the motor vents.
Lift
SET HANDLE
HEIGHT
PUSH LOCK
FORWARD
SQUEEZE BOTH
TRIGGERS
Providing the Finest Global Floor Care Solutions

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LO-BOY
Super Heavy-Duty Floor Machine
175 RPM - 1 HP or 1.5 HP
15”, 17”, 19”, 20” and 21”
(6) LO-BOY Super Heavy-Duty Floor Machine
13
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ITEM DESCRIPTION PART # #REQUIRED
1 Switch Box Back A-104 1
2 Handle Tube Screw B-23 2
3 Switch Box Closing Screw B-21 4
4 Strain Relief Clip M-213 1
5 Ground Wire Screw B-68 2
6 Rubber Spacer M-218 Y 2
7 Hand Grip M-218 2
8 Handle Tube Insert M-247 1
9 Handle Tube Assembly M-206 1
10 Cable Hook Screw B-2 2
11 Cable Hook A-164 1
12 Sliding Collar A-111 1
13 Oval Hole Cam Washer B-37 1
14 Cam Lock Wing Nut B-25 1
15 Cam Split Washer B-39 1
16 Bent Brace M-216 2
17 Yoke Bolt B-18A 2
18 Yoke Nut B-19 2
19 Handle Tube Cable G-16 1
20 Black Rubber Cable Connector M-249 1
21 Cable Grommet B-63 1
22 Rectangular Hole Cam Washer B-67 1
23 Cam Assembly C-100 1
23A Complete Cam Assembly Kit (Includes 1 each of CCA 1
Drawing Items #13, 14, 15, 22, 23)
24 50 Foot Cable 14/3 Yellow G-14-50-Y 1
25 Switch Mounting Plate G-30-B 1
26 Switch Plate Screw B-1 2
27 Int. Tooth Lock Washer (For Switch) B-35 1
28 Insulated Flag Wire Connector G-48 2
29 On-Off Switch And Plate Assembly G-30-AB 1
30 Lock Washer B-33 1
31 Trigger Return Spring G-30-CT057 1
32 Label For Switch Box CALL FOR # 1
33 Switch Box Front A-103 1
34 Wire Connector G-47 1
35 Trigger A-105 2
36 16" Crossbar M-211-A 1
37 Safety Interlock Assembly SIA-1 1
38 Trigger Pin B-70 2
39 Crossbar Screw B-22 2
40 Yoke Bolt B-14 1
41 Yoke A-1001 1
42 Acorn Nut For Yoke Bolt B-10 1
43 Drip Cap Mounting Screw B-151 3
44 66 Frame Drip Cap Cover M-241 1
45 66 Frame Drip Cap Cover Bumper M-239 1
46 Cork Drip Cap Gasket M-248 1
47 Split Washer B-32 4
48 Motor 66 Frame 1.5 HP With Gearbox, 115V MOTOR /GB-LH/E 1
49 Gear Box, 11:1, Triple Planetary GB96008 1
50 Wheel Axel Bolt B-15, BDP 2
51 Spring Washer B-51 12
52 6" Wheel M-245 2
53 Wheel Carriage A-117 2
54 Spring B-30 2
55 9” Axel M-217 1
56B Base Casting 15" A-124 1
56C Base Casting 17" A-134 1
56D Base Casting 19" A-127 1
56E Base Casting 20" A-129 1
56F Base Casting 21" A-129 1
57 Axel Pin B-45 2
58 Wheel Axel Pin B-46 2
59 Bumper Screw B-68 2
60 Bumper Strap 15” (order 43” of Bumper Strap) Bumper Strap 2
61A Bumper 15" (order 37” of Bumper Stock) Bumper Stock 1
61B Bumper 17" M-232-17 1
61C Bumper 19" M-232-19 1
61D Bumper 20" M-232-21 1
61D Bumper 21" M-232-21 1
62 1/4” Medium Split Washer B-32 3
63 Cap Screw B-31 3
64 Scrubber Plug B-50 1
65 Label for Motor CALL FOR # 1
LO-BOY Super Heavy-Duty Floor Machine (7)