MasterCraft MTHC16EHR-3450 Maintenance Manual
MTHC16EHR-3450
M
ULTI-PURPOSE
FLOOR MACHINE
SAFETY, OPERATION &
M
AINTENANCE
MANUAL
W
/PARTS LIST
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READ & FOLLOW ALL INSTRUCTIONS,
ARNINGS & CAUTION
W
BEFORE USING THIS FLOOR MACHINE
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 packaging,
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 thresholds and other misuse may result in a damaged
unit and invalidate the warranty.
Parts and Service Center
777 South Street
Newburgh NY 12550-0606
TTeell::
845.565.6623
FFaaxx::
845.565.8894
PLEASE READ
CAREFULLY
BEFORE
OPERATING
AVE THESE INSTRUCTIONS
S
PAGE 1
PN 493538 Rev B - MTHC16EHR-3450 Floor Machine - Printed in USA 12/18/07
IMPORTANT
SAFETY
INSTRUCTIONS
WARNING:
To reduce the risk of fire, electric shock or injury;
Read all instructions before using this floor machine.
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 necessary when used around or near children.
4) Use only as described in this manual. Use
only manufacturer's recommended attachments.
5) 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 machine over cord. Keep cord
away from heated surfaces.
6) 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.
7) DO NOT use an extension cord.
8) DO NOT handle the plug or operate with
wet hands.
9) DO NOT put any object into the motor
openings.
10) DO NOT unplug by pulling on cord. To
unplug, grasp plug, not the power cord.
11) Keep hair, loose clothing, fingers and all
parts of body away from moving parts.
12) DO NOT use an optional vacuum without manufacturer’s filters in place.
13) DO NOT operate where anesthetics
and oxygen are used.
GROUNDING
INSTRUCTIONS
Improper use of the grounding plug can result in a risk of electrical shock.
This unit must be grounded. If it should malfunction
or breakdown, grounding provides a path of least
resistance for electrical current to reduce the risk of
electric shock. This machine is equipped with a
cord having an equipment-grounded plug. The plug
must be inserted into an appropriate outlet that is
properly installed
14) DO NOT use around flammable or
combustible liquids such as gasoline or use
in areas where they may be present.
1155))
Replace damaged or worn parts immediately with genuine manufacturer’s equipment parts to maintain safety and protect
your limited warranty.
16) Floor sanding can result in an
explosive mixture of fine dust and air.
Use a floor sanding machine only in a
well ventilated area.
17) DO NOT to 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.)
ANGER:
D
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 wire with insulation having
an outer surface that is green with or without yellow
stripes is the grounding wire.
GROUNDING METHODS
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.
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, the use of a temporary adaptor is not permitted by the Canadian Electrical Code.
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 connected to a permanent ground such as a properly
grounded outlet box cover. Whenever the adaptor is
used, it must be held in place by the metal screw
(Fig C).
WARNING
PAGE 2
CAUTION:
ATTACHMENTS
When installing or changing the accessories, turn OFF the sander
and disconnect the power cord from the electrical outlet.
When installing or removing attachments, always wear protective gloves and start at the 12
o’clock position.
Before Installation or Changing of
Attachments:
1) Unplug the sander from the wall outlet.
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.
NNoottee::
It is recommended that a towel or pad is
placed under the machine to protect the floor.
Changing and Installation the
Attachments
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 sander.
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 the attachments on by hand and if
INSTALLATION &
HANGING
C
necessary, carefully tap it into place with a
rubber mallet.
5) Repeat steps 1 thru 4 with the remaining
2 attachments.
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.
CAUTION:
DO NOT attempt to operate this machine if it is not fully assembled.
When servicing or replacing an accessories turn
and disconnect from power source.
To start operating, tilt machine back on transport wheels, turn
machine and carefully lower machine onto the working surface.
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) Engage the safety trigger and trigger lock
beneath the right handle grip.
6) When the machine is running, carefully
lower it onto the working surface and
release the trigger lock.
7) To stop the machine release the safety
trigger and it will automatically turn OFF.
8) Move the machine side-to-side while
maintaining a steady, consistent pace with
the machine.
OFF
the machine
PAGE 3
ON
FLOOR
MACHINE
OPERATION
INSTRUCTION
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 the wait 30 seconds, then press
the reset button .
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