MK Diamond Products | MK-370 EXP | Operating instructions | MK Diamond Products MK-370 EXP Operating instructions

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MK-370EXP TILE SAW
OWNERS MANUAL &
OPERATING INSTRUCTIONS
Revision 301
04.2009
Manual Part No. 160084
Caution: Read all safety and operating instructions before
using this equipment. This owners manual MUST accompany
the equipment at all times.
MK Diamond Products, Inc.
MK-370EXP
NOTES
Congratulations on your purchase of a MK-370EXP Tile Saw. We are certain that you will be pleased
with your purchase. MK Diamond takes pride in producing the finest construction power tools and
diamond blades in the industry.
Operated correctly, your MK-370EXP should provide you with years of service. In order to help you,
we have included this manual. This owners manual contains information necessary to operate and
maintain your MK-370EXP safely and correctly. Please take a few minutes to familiarize yourself with
the MK-370EXP by reading and reviewing this manual.
If you should have questions concerning your MK-370EXP, please feel free to call our friendly customer
service department at: 800 421-5830
Regards,
MK Diamond
NOTE THIS INFORMATION FOR FUTURE USE:
MODEL NUMBER:
SERIAL NUMBER:
PURCHASE PLACE:
PURCHASE DATE:
NOTE: For your (1) one year warranty to be effective, complete the warranty card
(including the Serial Number) and mail it in as soon as possible.
MK-370EXP
MK-370EXP
TABLE OF CONTENTS
PAGE
NO.
SAFETY
Safety Message/Alert Symbols, Warnings
Hazard Symbols
Electric Motor Safety
Operation & Safety Decals
PRODUCT SPECIFICATIONS
Specifications
SET-UP
Unpacking, Transport, Stand, & Assembly
Adjustment & Operation
Cleanup
Maintenance & Troubleshooting
EXPLODED VIEW AND PART LIST
Exploded View Saw
Parts List
Exploded View Table
Parts List
THEORY
Theory of Diamond Blades
ACCESSORIES
Accessories List
ORDERING & RETURN INSTRUCTIONS
Ordering & Return Information
4-6
7
8-10
11
12
13-20
21-25
26-27
28-40
42
43
44
45
46
47
48
MK-370EXP
SAFETY
Read and follow all safety, operating and maintenance instructions. Failure to read and follow these
instructions could result in injury or death to you or others. Failure to read and follow these
instructions could also result in damage and/or reduced equipment life.
SAFETY MESSAGES
A safety message alerts you to potential hazards that could hurt you or others. Each safety message is preceded
by a safety alert symbol (
) and one of three words: DANGER, WARNING, or CAUTION.
DANGER
You WILL be KILLED or SERIOUSLY INJURED if you do not follow directions.
WARNING
You CAN be KILLED or SERIOUSLY INJURED if you do not follow directions.
CAUTION
You CAN be INJURED if you do not follow directions. It may also be used to alert against unsafe
practices.
DAMAGE PREVENTION AND INFORMATION MESSAGES:
A Damage Prevention Message is to inform the user of important information and/or instructions
that could lead to equipment or other property damage if not followed. Information Messages convey
information that pertains to the equipment being used. Each message will be preceded by the word
NOTE, as in the example below.
NOTE: Equipment and/or property damage may result if these instructions are not followed.
GENERAL SAFETY PRECAUTIONS AND HAZARD SYMBOLS
In order to prevent injury, the following safety precautions and symbols should be followed at all times!
Safety Precautions
ALWAYS read this Owner’s Manual before operating the machine.
ALWAYS keep the Blade Guards in place.
REMOVE ADJUSTING KEYS AND WRENCHES
Form a habit of checking to see that keys and adjusting wrenches are removed from the
power tool before it is turned on.
KEEP WORK AREA CLEAN
Cluttered work areas and benches invite accidents.
DO NOT USE IN DANGEROUS PLACES
DO NOT use power tools in damp or wet locations nor expose them to rain. Always keep
the work area well lighted.
KEEP CHILDREN AWAY
All visitors and children should be kept a safe distance from work area.
MK-370EXP
SAFETY
MAKE THE WORKSHOP KID PROOF
Make the workshops kid proof by using padlocks, master switches or by removing starter keys.
DO NOT FORCE THE TOOL
A power tool will do a job better and safer operating at the rate for which it was designed.
USE THE RIGHT TOOL
DO NOT force a tool or an attachment, to do a job that it was not designed to do.
USE THE PROPER EXTENSION CORD
If using an extension cord make sure it is in good condition first. When using an extension cord,
be sure to use one heavy enough to carry the current your product will draw. An undersized cord
will cause a drop in line voltage that will result in a loss of power and overheating. TABLE 1, Page
9 shows the correct AWG size to use depending on cord length and nameplate ampere rating. If in
doubt, use the next heavier gage. The smaller the gage number, the heavier the cord.
USE PROPER APPAREL
DO NOT wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry that may be
caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to
contain long hair.
ALWAYS wear approved eye protection.
ALWAYS wear approved respiratory protection.
SECURE WORK
Clamps or a vise should be used to hold work whenever practical. Keeping your hands free
to operate a power tool is safer.
DO NOT OVERREACH
Keep proper footing and balance at all times by not overreaching.
MAINTAIN TOOLS WITH CARE
Keep tools clean for the best and safest performance. Always follow maintenance instructions
for lubricating, and when changing accessories.
DISCONNECT TOOLS
Power tools should always be disconnected before servicing or when changing accessories,
such as blades, bits, cutters, and the like.
ON / OFF
ALWAYS place the power ON/OFF switch in the OFF position when the saw is not in use.
MK-370EXP
SAFETY
USE RECOMMENDED ACCESSORIES
Consult the owner’s manual for recommended accessories. Using improper accessories may
increase the risk of personal or by-stander injury.
NEVER STAND ON THE TOOL
Serious injury could occur if a power tool is tipped, or if a cutting tool is unintentionally
contacted.
CHECK FOR DAMAGED PARTS
Before using a power tool, check for damaged parts. A guard or any other part that is
damaged should be carefully checked to determine it would operate properly and perform
its intended function. Always check moving parts for proper alignment or binding. Check
for broken parts and mountings and all other conditions that may affect the operation of the
power tool. A guard, or any damaged part, should be properly repaired or replaced.
DIRECTION OF FEED
ALWAYS feed work into a blade or cutter against the direction of rotation. A blade or
cutter should always be installed such that rotation is in the direction of the arrow imprinted
on the side of the blade or cutter.
NEVER LEAVE A TOOL UNATTENDED
TURN POWER OFF - Do not leave a tool until it comes to a complete stop. Always turn a
power tool OFF when leaving the work area, or, when a cut is finished.
CALIFORNIA PROPOSITION 65 MESSAGE
WARNING
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities
contain chemicals known [to the State of California] 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 and
• Arsenic and chromium, from chemically treated lumber
For further information, consult the following sources:
http://www.osha.gov/SLTC/silicacrystalline/index.html
http://www.oehha.org/prop65/out_of_date/6022kLstA.html
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 those dust masks that are specially designed to filter out microscopic particles.
MK-370EXP
SAFETY
Hazard Symbols
n
ELECTRICAL SHOCK
NEVER touch electrical wires or components while the engine is running. They can be
sources of electrical shock which could cause severe injury or burns.
ROTATING PARTS
Keep hands, feet, hair, and clothing away from all moving parts to prevent injury. Never operate
the engine with covers, shrouds, or guards removed.
((
))
OVER SPEED
NEVER tamper with the governor components or settings to increase the maximum speed.
Severe personal injury and damage to the engine or equipment can result if operated at
speeds above maximum.
DO NOT EXPOSE TO RAIN
DO NOT expose to rain or use in damp locations.
WARNING
Sawing and drilling generates dust. Excessive airborne particles may cause irritation to eyes, skin
and respiratory tract. To avoid breathing impairment, always employ dust controls and protection
suitable to the material being sawed or drilled; See OSHA (29 CFR Part 1910.1200). Diamond Blades
improperly used are dangerous. Comply with American National Standards Institute Safety Code,
B7.1 and, Occupational Safety and Health Act covering Speed, Safety Guards, Flanges, Mounting
Procedures, General Operating Rules, Handling, Storage and General Machine Conditions
MK-370EXP
SAFETY
ELECTRICAL REQUIREMENTS AND GROUNDING INSTRUCTIONS
In order to prevent potential electrical shock and injury, the following electrical safety precautions and symbols should be followed at all times!
WARNING
In case of a malfunction or breakdown, grounding provides a path of least resistance for electric current to
reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding
conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
• Do not modify the plug provided – if it will not fit the outlet; have the proper outlet installed by a
qualified electrician
• Improper connections of the equipment-grounding conductor can result in a risk of electric shock. The equipment-grounding conductor is the insulated conductor that has an outer surface that is green, with or without yellow stripes. If repair or replacement of the electric cord or plug is necessary, do not
connect the equipment-grounding conductor to a live terminal
• Check with a qualified electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to whether the tool is properly grounded
• Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool’s plug
• Repair or replace a damaged or worn cord immediately
WARNING
This tool is intended for use on a circuit that has an outlet that looks like the one shown in Sketch A of
Figure 1. The tool has a grounding plug that looks like the plug illustrated in Sketch A of Figure 1. A temporary adapter, which looks like the adapter illustrated in sketches B and C, may be used to connect this plug to
a 2-pole receptacle as shown in Sketch B, if a properly grounded outlet is not available. The temporary adapter
should be used only until a properly grounded outlet can be installed by a qualified electrician. The greencolored rigid ear, lug, and the like, extending from the adapter, must be connected to a permanent ground such
as a properly grounded outlet box.
NOTE: Use of a temporary adapter is not permitted in Canada.
-ETAL3CREW
'ROUNDING
0IN
#OVEROF
'ROUNDED
/UTLET"OX
!
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'ROUNDING
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Fig. 1 Circuit and Adapter Information
WARNING
To avoid the possibility of the appliance plug or receptacle getting wet, position the machine to one side of
a wall mounted receptacle. This will prevent water from dripping onto the receptacle or plug. A “drip loop,”
shown in Figure 2, should be arranged by the user to properly position the power cord relative to the power
source.
The “drip loop” is that part of the cord below the level of the receptacle, or the connector, if an extension
cord is used. This method of positioning the cord prevents the travel of water along the power cord and
coming in contact with the receptacle.
If the plug or receptacle gets wet, DO NOT unplug the cord. Disconnect the fuse or circuit breaker that
supplies power to the tool. Then unplug and examine for presence of water in the receptacle.
Power
Cord
Power
Tool
Supporting
Surface
Drip Loop
Fig. 2 Drip Loop Information
WARNING
Use only extensions cords that are intended for outdoor use. These extension cords are
identified by a marking “Acceptable for use with outdoor appliances; store indoors while
not in use." Use only extension cords having an electrical rating not less than the rating of
the product. Do not use damaged extension cords. Examine extension cords before using
and replace if damaged. Do not abuse extension cords and do not yank on any cord to
disconnect. Keep cords away from heat and sharp edges. Always disconnect the extension
cord from the receptacle before disconnection the product form the extension cord.
MK-370EXP
SAFETY
WARNING
To reduce the risk of electrocution, keep all connections dry and off the ground. Do not
touch the plug with wet hands.
WARNING
Use of under size extension cords result in low voltage to the motor that can result in
motor burnout and premature failure. MK Diamond warns that equipment returned to
us showing signs of being run in a low voltage condition, through the use of undersized
extension cords will be repaired or replaced totally at the customers expense. There will
be no warranty claim.
To choose the proper extension cord,
• Locate the length of extension cord needed in TABLE 1 below.
• Once the proper length is found, move down the column to obtain the correct AWG
size required for that length of extension cord.
EXTENSION CORD MINIMUM GAGE FOR LENGTH
VOLTS
TOTAL LENGTH OF CORD IN FEET
25 ft.
AWG
50 ft.
AWG
100 ft.
AWG
150 ft.
AWG
115v
14
12
Not Recommended
Not Recommended
230v
N/A
14
12
N/A
Table 1
10
MK-370EXP
SAFETY
SAFETY LABEL LOCATIONS
Safety labels contain important safety information. Please read the information contained on each safety label.
These labels are considered a permanent part of your saw. If a label comes off or becomes hard to read,
contact MK Diamond or your dealer for a replacement.
Tile Saws
! CAUTION
! WARNING
Receptacle is for
water pump only.
125V, .6 amps max.
Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in
their composition may give off 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. In addition,California and some other
authorities have listed respirable crystalline silica as a substance known to cause cancer.
Label A
! CAUTION
This saw is to be used
with a Ground Fault
Circuit Interrupter.
Label B
FOR INFORMATION ON
SERVICE OR
WARRANTY
! WARNING
For Your Own Safety Read Instruction Manual
Before Operating Saw.
Wear Eye Protection.
Disconnect Saw Before Servicing, when Changing
Cutting Wheels and Cleaning.
Use Tool Only with Smooth Edge Cutting Wheels
Free of Openings and Grooves.
Replace Damaged Cutting Wheel Before Operating.
Do Not Fill Water Bath Above Water Fill Line.
See Manual for Pump Replacement.
Label C
A
F
Label E
PLEASE CALL
1-800-474-5594
Label D
! NOTICE
B
E
C
B
Most Motor Problems are caused by improper
voltage and extension cords. Cord should be
one-piece and short as possible. Cord
selection should match the following table.
1-2 H.P.
115v 230v
25’ 100’ Max. Cord Length No. 12 Wire
50’ 150’ Max. Cord Length No. 10 Wire
75’ 250’ Max. Cord Length No. 8 Wire
Label F
Tile Master Label Sheet Part#166012
Decal/Label
A
B
C
D
E
F
Location
Motor - Side
Motor - Side
Motor - Back
Motor - Front
Cutting Head – Top
Motor - Front
Description
Caution - Receptacle is for Water Pump Only
Caution - Use with GFCI only
Service/ Warranty
Warning - Silica Warning
Warning - Read Owners Manual
Notice - Voltage/extension cords
TILE SAW SPECIFIC WARNINGS
WARNING
Wear eye protection.
Use splash guard for every operation for which it can be used.
Disconnect saw before servicing, when changing cutting blades, and cleaning.
Replace damaged cutting blade before operating.
11
MK-370EXP
SAFETY
PRODUCT SPECIFICATIONS
The MK-370EXP is a versatile Tile Saw. Operated and used according to this manual, the MK-370EXP
will provide years of dependable service.
General Description
The MK-370EXP Tile Saw is engineered as a tabletop or stand mounted wet tile saw. The saw includes a
powerful 115V electric motor. The saw is capable of cutting tile up to twelve (12) inches in length. The saw
can cut an object one and three quarters (1-3/4) inches thick in one pass.
Motor Specifications
Motor specifications for the MK-370EXP are listed in Table 2 below.
Voltage
Overall Amperage
Frequency
RPM
Horse Power
115v
7.4 A
50/60Hz
6000 rpm
1-1/4 hp
Table 2
Blade Capacity
The MK-370EXP uses a seven (7) inch (178mm) diameter, wet cutting continuous rim, MK Diamond blade
with a five-eighths (5/8) inch (15.875 mm) arbor.
Tile Types
The MK-370EXP can cut a variety of tile types including stone, masonry, and lapidary products.
NOTE:
The MK-370EXP is not designed to cut plastic or metals.
12
MK-370EXP
UNPACKING
UNPACKING
CAUTION Use proper lifting techniques when lifting the MK-370EXP
Remove the MK-370EXP and accessory box from the carton.
CONTENTS:
One (1) MK-370EXP cutting surface &
water pan
One (1) MK-370EXP cutting head
One (1) 7-inch wet cutting blade
One (1) splash guard
One (1) splash guard wing nut & washer
One
One
One
One
One
(1)
(1)
(1)
(1)
(1)
extended rip guide
electric water pump
pump discharge fitting
cooling transfer tube
Flow adjusting clamp
One
One
One
One
One
(1)
(1)
(1)
(1)
(1)
blade wrench
shaft wrench,
owners manual
pump manual
warranty card
MK-370EXP
Cutting Surface
MK-370EXP
Cutting Head
Diamond Blade
Splash Guard
Splash Guard
Wing Nut & Washer
Extended
Rip Guide
Electric
Water Pump
Pump
Discharge Fitting
Cooling
Transfer Tube
Flow
Adjusting Clamp
Pump
Manual
Warranty
Card
www.mkdiamond.com
MK-370EXP TILE SAW
OWNERS MANUAL &
OPERATING INSTRUCTIONS
Revision 301
03.2009
Caution: Read all safety and operating instructions before
using this equipment. This parts list MUST accompany the
equipment at all times.
MK Diamond Products, Inc.
Blade Nut
Wrench
Shaft
Wrench
Owners
Manual
OPTIONAL SIDE TABLE
Side Table
You have the option of purchasing a Side Table (part# 160488) that can be attached to the Cutting
Table. The Side Table can be an aid in cutting larger tiles.
13
MK-370EXP
UNIVERSAL STAND ASSEMBLY
OPTIONAL STAND
CAUTION
1. The MK-370EXP weighs approximately thirty-three (33) pounds; use care when lifting.
2. Never lift the MK-370EXP with water in the Water Pan.
If a stand was not included with your saw, you have the option of purchasing one (part# 160131-MK)
(A)
Open the Stand
and place on flat surface
(B)
Orient the Saw to the
Stand
(D)
Sit the Water Pan on top of
the Stand Supports
(C)
Align the Stand supports to
the depressions on the pan
(E)
Verify that the saw is stable
in place
TRANSPORT
CAUTION
1. The MK-370EXP weighs approximately thirty-three (33) pounds; use care when transporting.
2. Never transport the MK-370EXP with water in the Water Pan.
The MK-370EXP is designed with a rigid frame and removable Cutting Head making the saw easily
transportable. To lift the saw, grasp the front and back of the frame at the lift points shown below.
Cutting
Head
Lift Point
Lift Point
14
MK-370EXP
ASSEMBLY
Follow the assembly instructions to prepare your MK-370EXP for operation.
Cutting Head Installation
Flat Washer
(A)
Place the Flat Washer onto
the Height Adjusting Knob
(B)
Align Cutting Head Pivot
Hole to the Post, Pivot
Shaft
(C)
Verify the Cutting Head is
completely installed and
seated on the Post
(D)
Install the Height Adjusting Knob
through the Post into the Cutting
Head and tighten the Knob
Diamond Blade Installation
NOTE: When installing the Retaining Screw, do not "cross-thread" and DO NOT over tighten the screw.
(A)
Loosen and remove the
Blade Guard Retaining
Knob
(B)
Loosen the Blade Guard
Retaining Wing nut
15
(C)
Open the Blade Guard
MK-370EXP
Motor Shaft
Motor
Inner blade
Guard
ASSEMBLY
Turn Counter-Clockwise
Blade Wrench
Shaft Wrench
(D)
Place the Shaft Wrench
between the Inner Blade
Guard and the Motor and
onto the Motor Shaft
(E)
Using the Blade and Shaft
Wrenches, loosen and
remove the Retaining Nut
and Outer Flange
(F)
Install Diamond Blade
onto Blade Shaft
(G)
Install the Retaining Nut
and Outer Flange and then
tighten using the Blade and
Shaft Wrenches
(H)
Close the Blade Guard
(I)
Verify the Blade is seated
on the Blade Shaft and
direction of rotation is
correct
(J)
Tighten the Blade Guard
Retaining Wing nut
(K)
Tighten the Blade Guard,
Retaining Knob
16
MK-370EXP
ASSEMBLY
Adjustable Cutting Guide Installation
NOTE: The Adjustable Cutting Guide can be used on either side of the Diamond Blade.
(B)
Place the Adjustable Cutting Guide
onto the Movable Cutting, Table
Ruler/Stop and tighten the retaining
thumbscrew
(A)
Loosen Adjustable Cutting Guide
retaining thumbscrew and place it
over the Movable Cutting Table,
Ruler/Stop
Splash Guard Installation
(B)
Install the Splash Guard
onto the Blade Guard
(A)
Install the retaining thumbscrew
through the washer and Splash
Guard then align to the hole found
on back of the Blade Guard
Water Pump Preparation
(B)
Press one end of the Cooling
Transfer Tube onto the Water
Pump Discharge Fitting
(A)
Slide Cooling Flow Adjusting
Clamp onto the Cooling
Transfer Tube
17
MK-370EXP
SETUP
Pre-start Inspection
Prior to beginning work, a pre-start inspection of the saw should be performed.
(A)
Ensure the ON/OFF Switch
is in the OFF position
(B)
Verify the Movable Cutting
Table moves freely
(D)
Inspect the Pump Assembly
for damage – ensure the cord
is free of cracks or cuts
Connecting the Water Pump
(C)
Inspect the Diamond Blade
for damage – verify the blade
is correct for the type of
material being cut
(E)
Inspect the MK-370EXP for
damage – ensure the cord
is free of cracks or cuts
WARNING 1. To prevent the possibility of electrical shock, the MK-370EXP MUST be de-
energized when connecting the Water Pump.
2. To prevent the possibility of electrical shock, use only MK Diamond authorized
replacement parts.
NOTE: To prevent pump damage, the Water Pump must be disconnected if cutting dry.
(A)
Loosen the cutting head
pivot retaining knob and tilt
cutting head to 45°
(B)
Connect the Cooling Transfer
Tube to the inlet connection
on the Blade Guard
18
(C)
Connect the Water Pump
power cord to the connection
found on the back of the motor
MK-370EXP
SETUP
Water Pump Setup for Operation
The Water Pump can be setup for operation in two ways: External Water Source or Re-circulation.
NOTE: If cutting dry DO NOT connect the water pump.
Re-circulation
NOTE: When using the re-circulation method, the water should be changed often for longer pump life
(A)
Ensure that Cooling
Transfer Tube is connected
(B)
Place the Water Pump
toward the back of the
Water Pan
(C)
Position pump as shown
and place the pump
electrical cord and cooling
transfer tube under the
frame.
(D)
Fill the Water Pan until
water completely covers
the Water Pump suction
External Water Source
This is the preferred method of cooling.
1. Verify or remove the Drain Plug from the Water Pan.
2. Place the Water Pump in an external container.
3. Fill the external container until water completely covers the Water Pump suction inlet.
4. Place an external catch basin below the Water Pan drain hole.
19
MK-370EXP
SETUP
Setup for Operation
CAUTION 1.
2.
3.
4.
5.
Before powering or starting, check for damage that could prevent this equipment from proper operation or performing it’s intended function. Check for binding and alignment of moving parts. Check for damaged, broken, or missing parts.
Verify the On/Off switch is in the OFF position.
Before connecting the MK-370EXP to a power supply, be sure the voltage, cycle and phase of the job site power source meet the requirements of TABLE 3
Use an approved Ground Fault Circuit Interrupter (GFCI)
Do not cover the motor vents as this could lead to motor overheating.
VOLTAGE
CYCLE
PHASE
115v
60Hz
1-phase
Table 3
NOTE: 1. In order to avoid breaker tripping, a 20 amp circuit breaker should be used.
2. If using an extension power cord, make sure the length and wire gauge correspond to the
requirements listed in TABLE 1 on page 10. An extension power cord that is too small in wire gauge (diameter), or too long in length, will cause the motor to overheat and could cause premature failure.
GFCI
(A)
Ensure the ON/OFF Switch
is in the OFF position
(B)
Plug MK-370EXP into the
GFCI
20
(C)
Plug the GFCI into the
Power source
MK-370EXP
ADJUSTMENT & OPERATION
Cutting Straight Edges
CAUTION DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for which
it was designed.
Desired cut length
indicated here
(A)
Loosen the Adjustable
Cutting Guide retaining
thumbscrew
(B)
Position the Adjustable
Cutting Guide to desired
cut length
(C)
Tighten the retaining
thumbscrew
(E)
Turn the motor ON
(F)
Verify cooling flow on both
sides of the blade
Ruler/Stop
(D)
Place the tile against the
Ruler/Stop and Cutting
Guide
(G)
Perform the cut
(H)
Turn the motor OFF when
work is complete
21
MK-370EXP
ADJUSTMENT & OPERATION
Cutting 45° Miters
The MK-370EXP is designed with an adjustable Cutting Head for precision 45º Miter Cuts.
CAUTION DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for which
it was designed.
Pivot Direction
(A)
Loosen the Cutting Head
Pivot, Retaining Knob
(B)
Pivot the Cutting Head to
the 45º cutting position
(C)
Tighten the Cutting Head,
Pivot Retaining Knob
(D)
Loosen the Adjustable
Cutting Guide retaining
thumbscrew
(E)
Position the Adjustable
Cutting Guide to desired
cut length
(F)
Tighten the retaining
thumbscrew
(G)
Place the tile against the
Ruler/Stop and Cutting
Guide
(H)
Turn the motor ON
(I)
Verify cooling flow on both
sides of the blade
22
MK-370EXP
ADJUSTMENT & OPERATION
Cutting 45° Miters (cont...)
Pivot Direction
(J)
Perform the cut
(K)
Turn the motor OFF when
work is complete
23
(L)
Return the Cutting Head to
the upright position when
complete
MK-370EXP
ADJUSTMENT & OPERATION
Diagonal Cutting
NOTE: To cut diagonal, the Dual 45º Flat Angle Guide (MK Diamond Part No. 134557-MK) should be used.
CAUTION DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for which
it was designed.
(A)
Remove the Adjustable
Cutting Guide
(B)
Place the Dual 45º Flat
Angle Guide on the Ruler/
Stop
(C)
Position the Dual 45º Flat
Angle Guide and tighten
the retaining knob
NOTE: If Cutting the tile in two equal halves, align the tile in the V-notch of the Movable Cutting Table
Ruler/Stop.
Ruler/Stop
(D)
Position the tile against the
Dual 45º Flat Angle Guide
and the Ruler/Stop
(E)
Turn the motor ON
(G)
Perform the cut
(F)
Verify cooling flow on both
sides of the blade
(H)
Turn the motor OFF when
work is complete
24
MK-370EXP
ADJUSTMENT & OPERATION
Off-angle Cutting
NOTE: Use a Protractor (MK Part No. 134569-MK) to cut angles other than 45º angles. (not included)
CAUTION DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for
which it was designed.
Ruler/Stop
(A)
Remove the Adjustable
Cutting Guide
(B)
Place the Protractor on the Ruler/
Stop. Turn CCW to loosen
(C)
Set the desired angle on
the Protractor Gage
Desired cut length
indicated here
(D)
Tighten the Protractor
Gage retaining knob
(E)
Position the Protractor Cutting
Guide to the desired length
(F)
Tighten the retaining knob
(G)
Position the tile against the
Protractor and the Ruler/Stop
(H)
Turn the motor ON
(I)
Verify cooling flow on both
sides of the blade
(G)
Perform the cut
25
(H)
Turn the motor OFF when
work is complete
MK-370EXP
MAINTENANCE
CLEANUP
NOTE: Dispose of wastewater in accordance with applicable Federal, State and Local laws.
(A)
Remove the pump Suction
Screen and clean the Water
Pump of all debris.
(See pump manual for more
detail)
(B)
Fill the Water Pan with
clean water
(C)
Run the MK-370EXP until
clear water is seen at the
blade Cooling Flow Points
(Approx. 1 minute)
CAUTION Ensure the saw is disconnected before completing the remainder of the cleanup process.
GFCI
(D)
Ensure the ON/OFF Switch
is in the OFF position
(E)
Unplug the GFCI from the
Power source
(F)
Unplug MK-370EXP from
the GFCI
(G)
Remove the Cutting
Assembly from the Water
Pan
(H)
Dispose the contents of
the Water Pan
(I)
Clean the MK-370 with
soap and clean water
26
MK-370EXP
(I)
Clean the Water Pan
(J)
Clean the Adjustable Cutting
Guide and Guide Bar
MAINTENANCE
(K)
Clean the Roller Wheel
Guide Rail
CAUTION Ensure water is not forced into the motor casing when cleaning.
(L)
Clean the remainder of the
MK-370EXP
27
MK-370EXP
MAINTENANCE
Maintenance Following Use
To extend the life of the MK-370EXP, the following procedure should be performed after each use.
Lubricate all points listed below with light oils such as, 3 in 1, WD-40, etc.
(A)
Ensure the ON/OFF Switch
is in the OFF position
(B)
Unplug MK-370EXP
(C)
Lubricate the Guide Bar
Roller Wheel
Assembly
(D)
Lubricate the Roller Wheel
Assembly
Monthly Maintenance
The following maintenance should be performed Monthly.
Turn CCW
Outer Flange
Inner Flange
Retaining Nut
(A)
Remove the Diamond
Blade, Outer Flange and
Retaining Nut
(B)
Remove the Inner Flange
28
Inner Flange
(C)
Clean and Lubricate the
Inner and Outer Flanges
and the Retaining Nut
MK-370EXP
MAINTENANCE
Blade Guard
Pivot Shaft
(D)
Clean around Motor Shaft
Front Pivot
Point
(E)
Remove the Blade Guard
then clean and lubricate the
Blade Guard Pivot Shaft
(F)
Lubricate the front Cutting
Head Pivot Point
(H)
Remove the Cutting Head
(I)
Clean the Cutting Head
Pivot Holes
Rear Pivot
Point
(G)
Lubricate the rear Cutting
Head Pivot Point
Pivot Shaft
(J)
Lubricate the Cutting Head
Pivot Holes
(K)
Lubricate the Cutting Head
Pivot Shaft
(M)
Verify the Cutting Table Roller
Wheel Assembly is tight
(L)
Lubricate the Cutting Head
Adjustment Knob
(N)
Verify that the Roller
Wheel is tight
29
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
Flow Adjustment
NOTE: If flow to the diamond blade requires adjustment, perform the following actions.
(A)
Increase cooling flow by
releasing the Flow Adjusting
Clamp
(B)
Reduce cooling flow by
pressing down on the Flow
Adjusting Clamp
30
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
Blade Dressing
Like most cutting instruments, a diamond blade performs best when it is dressed. Over time and use,
diamonds on the outer edge of the blade will become smoothed or “glazed" over.
This will reduce grinding efficiency and may cause the blade to “wander" or bend giving the illusion of an
alignment problem. When this occurs, the blade will need to be dressed.
The diamond blade can be dressed using the MK Dressing Stick (part# 152792) and by following the steps
below.
(A)
Setup the MK-370EXP
for operation (See Setup,
Adjustment and Operation)
(B)
Set the Adjustable Cutting
Guide to cut a 1/16-strip
(C)
Position the Dressing Stick
(D)
Turn the motor ON
(E)
Verify cooling flow on both
sides of the blade
(F)
Cut the Dressing Stick 7 or
8 times to dress the Blade
(G)
Ensure the ON/OFF Switch
is in the OFF position
31
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
Diamond Blade Change-out
NOTE: When installing the Retaining Nut, do not “cross-thread" and DO NOT over tighten the screw.
Turn CCW
(A)
Open the Outer Blade
(B)
Remove Retaining Nut and
Outer Flange
(C)
Remove Diamond Blade
from Blade Shaft
Turn CW
(D)
Install the Diamond Blade
onto Blade Shaft
(E)
Install the Retaining Nut
and Outer Flange and then
tighten using the Blade and
Shaft Wrenches
(G)
Close the Outer Blade
32
(F)
Verify the Blade is seated on
the Blade Shaft and direction
of rotation is correct
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
ALIGNMENT
The Movable Cutting Table of the MK-370EXP is pre-aligned in the factory. It may become misaligned with
the Cutting Head of the Tile Saw over time. Should misalignment occur, perform the following steps to
realign it.
NOTE: If alignment problems are the result of a warped blade, a bent frame or bent support arm, or, if
alignment is off by more than 1/8-inch, contact the MK Diamond Service Center - (800) 474-5594
TOOLS NEEDED
Combination Square
12-inch or Greater
1/2-inch Wrench
1/4-inch Wrench
Flat Head Screwdriver
(B)
Inspect Tile Saw
for damage
(C)
Inspect Diamond Blade
for damage
PREPARATION
(A)
Remove Tile Saw
from Power Source
33
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
MOVABLE CUTTING TABLE ALIGNMENT VERIFICATION
This will verify the Movable Cutting Table is aligned to the frame of the saw.
NOTE: If the blade is misaligned following alignment verification, attempt to align using Alignment Screw, 90º
Verification. The Diamond Blade must be removed and reinstalled when removing the Blade Guard.
Blade Guard
retaining wing nut
(A)
Remove Blade Guard
(D)
Move Square to wheel
assembly side of the
cutting table
(B)
Place Square on guide bar
side of cutting table
(E)
Verify Wheel Assembly side of
Movable Cutting Table height
is same as Guide Bar side
(C)
Lock in position
(F)
If gap exists, loosen Movable
Cutting Table Wheel Assembly
Square
No Gap
(G)
Move Wheel Assembly up or
down to Square the Movable
Cutting Table
(H)
Check that there is no gap
between the Square and the
wheel assembly side of frame
34
(I)
Tighten Movable Cutting
Table Wheel Assembly
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
Alignment Screw, 90° Verification
90º- alignment verification will ensure that the blade will cut the tile straight up and down and not at an angle.
NOTES: If the blade is misaligned following this alignment procedure, return the saw to MK Diamond for
repair. The Diamond Blade must be removed and reinstalled when removing the Blade Guard.
Rotate Knob Counterclockwise to loosen
Lower
Screw
(A)
Position the Cutting Head
to the 45° Cutting Angle
(B)
Locate the 90°
Adjustment Screw
(C)
Rotate 90° Adjustment Screw
clockwise or counter-clockwise
to realign Cutting Head
No gaps between
Blade and Square
(D)
Position the Square on
Movable Cutting Table
against the Diamond Blade
(F)
Repeat Steps A to E as
necessary to align the
Cutting Head
(E)
Verify the Diamond Blade
is Square to the Movable
Cutting Table
Horizontal Rough Alignment
The Horizontal alignment will ensure that straight cuts (or Rip Cuts) are made.
1/4-inch Wrench
Rotate Clockwise or
Counterclockwise to
Adjust Height
(A)
Position Cutting Head
to normal Cut Depth
(B)
Loosen front and rear
Guide Bar Retaining Bolts
35
(C)
Move Guide Rail and Table
until the Blade is centered in
Cutting Groove
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
Horizontal Final Alignment
Ruler/Stop
(A)
Pull Movable Cutting Table
to front of Tile Saw
(B)
Position Square flat on Movable
Cutting Table against Ruler/
Stop
(C)
Position front of Square
against Blade
(D)
Move Guide Bar and table
until Square rests evenly
across Blade
(E)
Position end of Square
against Blade
(F)
Move Guide Bar and table
until Square rests evenly
across Blade
Horizontal Alignment Verification
(A)
Move the Cutting Table
back and forth to verify
Blade is even
across all points of Square
(B)
Tighten Guide Bar
Retaining Bolts
36
(C)
Move the Cutting Table back
and forth to re-verify Blade
is even across all points of
Square
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
45° Alignment Verification
The 45° Alignment Verification is done to ensure the blade will cut tile at a 45° angle.
NOTE: If the blade is misaligned following this alignment procedure, return the saw to MK Diamond for repair. The Diamond Blade must be removed and reinstalled when removing the Blade Guard.
Rotate Knob Counterclockwise to loosen
Square
Blade Guard retaining
wing nut
(A)
Remove Blade Guard
(If not done Previously)
(B)
Position the Cutting Head
to the 45° Cutting Angle
(C)
Place Square on the Movable
Cutting Table and position the
Square against the Blade
Upper
Screw
(D)
Verify Blade is even
across all points of Square
and there are no gaps
between Blade and Square
(E)
To Adjust 45° Cutting
Angle, locate the
45°Adjustment Screw
(F)
Rotate 45° Adjustment Screw
clockwise or counterclockwise to realign 45°
Cutting Angle
No Gaps between
Blade and Square
(G)
Verify Blade is now even
across all points of Square
(H)
Repeat steps A to G until Blade is
even across all points of Square
37
MK-370EXP
TROUBLESHOOTING
Blade will not cut properly
(A)
Check for Smoothness or
“Glazing" (Dress blade if
needed)
(B)
Check for proper rotation
(D)
Verify the blade is correct
for the material being used
Movable Cutting Table Does Not Move Correctly
(A)
Check that the Guide Bar
is clean – clean if dirty
(B)
Check the Movable Cutting
Table Roller Wheel for
wear replace if necessary
38
(C)
Ensure the Blade Core is
not bent and Arbor is not
out of round
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
Cooling Flow
(A)
Check cooling flow
Adjusting Clamp open
(B)
Remove the Cooling
Transfer Tube from the
Blade Guard inlet
(C)
Place Pump into a bucket
of water and check flow
Intake Screen
(D)
Remove the Cooling
Transfer Tube and check
flow
((E)
Remove the Pump
Discharge Fitting and check
(I)
Remove the Blade Guard
Intake Fitting
(F)
Remove the Pump Intake
Screen and check for debris
(J)
Clean the Blade Guard
Intake Fitting
39
MK-370EXP
MAINTENANCE & TROUBLESHOOTING
NOTE: “Rodding" cooling channels is performed by inserting a small wire rod through the cooling inlet
on top of the Blade Guard and directing the rod out through each of the cooling flow tubes
located on the underside of the Blade Guard. The cooling channels should be “rodded" until all
ports are free of foreign debris.
(K)
Rod Cooling Channels and
recheck flow
Blade Stops Turning
GFCI
(A)
Verify all plugs are fully
installed
(B)
Check to see if the Ground
Fault Circuit Interrupter
(GFCI) is tripped
(D)
Verify circuit breaker not
tripped. If tripped, reset
once
(E)
Check power source voltage
is 115v – if not 115v, move to
another circuit
40
(C)
Verify circuit breaker at least
20 amps – if not, move to
20 amp circuit
NOTES
41
MK-370EXP
PARTS LIST
42
MK-370EXP
PARTS LIST
ITEM
NO.
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
WASHER, FLAT CUT 3/8
RIP GUIDE (COMP)
WRENCH
FLANGE, OUTER
NUT, HEX, 5/8 - 18
KNOB, 5/16 - 18 X 1
SCREWS, 5/15 - 18 X 1 HEX HEAD MACHINE
WINGNUT, NYLK, 5/16-18
WASHER, LOCK, SPLIT, 5/16
BOLT, HEX HD TAP, 5/16 - 18 X 2-1/2
NUT, 10-24 HEX
SCREW, PHIL HD 10 - 24 X 3/4
SCREW, PHIL HD 10 - 24 X 1"
BOLT, SHOULDER 1/2 X 1/2
WASHER, 5/16 SAE FLAT
SCREW, WING, 1/4-20 X 1/2
NUT, 1/4-20 HEX
WASHER, 1/4 SAE FLAT
SCREW, SHOULDER 5/16 - 18 X 5/8
SCREW, 1/4 - 20 X 3/4 HEX HEAD MACHINE
BLADE, 7"
WRENCH, 11/16 OPEN END
ELBOW, 1/8 MNPT X 1/4 BARB, BRASS
GUARD, 7 INCH BLADE (COMP)
PUMP, WATER
MOTOR, 120V 7.4A
ASSEMBLY, ROLLER WHEEL
KNOB, TRI
SCREW, FLAT HD 10-32 X 5/8"
knob, 1/4-20 x 3/4"
CASTING, CUTTING HEAD (COMP)
CASTING, TABLE, 370/770EXP (COMP)
MOTOR MOUNT (COMP)
BAR, GUIDE
PAN, WATER
GUARD, SPLASH
ASSEMBLY, FRAME
43
PART OR
IDENTIFYING
NO.
101360
134551
134684
135830
135848
151681
151743
151746
151747
151748
151749
151750
151751
151753
151754
151888
151893
151915
152137
152370
153441
153450
154652
154811
155987-MK
156428-R
156586
156770-01
157554
159428-1
159937
159939
159941
159942
160041
160310
167450
QTY.
REQ.
1
1
1
2
1
2
2
1
3
1
2
1
1
2
5
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
MK-370EXP
PARTS LIST
CHART 1
CHART 2
44
MK-370EXP
PARTS LIST
CHART 1
ITEM
NO.
DESCRIPTION
PART OR
IDENTIFYING
NO.
QTY.
REQ.
1
SCREW, 5/16 - 18 X 1 HEX HEAD MACHINE
151743
2
2
WASHER, LOCK, SPLIT, 5/16
151747
2
3
WASHER, 5/16 SAE FLAT
151754
2
4
WHEEL, ROLLER
151799
2
5
NUT, 1/4 - 20 HEX
151893
2
6
SCREW, HEX HEAD 1/4-20 X 1-1/2"
151914
2
7
WASHER, 1/4 SAE FLAT
151915
2
8
BRACKET, ROLLER WHEEL
156522
1
ITEM
NO.
DESCRIPTION
PART OR
IDENTIFYING
NO.
QTY.
REQ.
1
TABLE (COMP)
159939
1
2
BEARING, MULTI LUBE
159948
2
CHART 2
45
MK-370EXP
THEORY
THEORY OF DIAMOND BLADES
Diamond blades do not really cut; they grind the material through friction. Diamond crystals, often visible
at the leading edge and sides of the rim/segment, remove material by scratching out particles of hard, dense
materials, or by knocking out larger particles of loosely bonded abrasive material.
This process eventually cracks or fractures the diamond particle, breaking it down into smaller pieces. As a
result, a diamond blade for cutting soft, abrasive material must have a hard metal matrix composition to resist
this erosion long enough for the exposed diamonds to be properly utilized.
Conversely, a blade for cutting a hard, non-abrasive material must have a soft bond to ensure that it will erode
and expose the diamonds embedded in the matrix. These simple principles are the foundation of “controlled
bond erosion".
Types of Cutting
There are two basic types of cutting-Dry or Wet. The choice of which type of blade to use depends on:
• The requirements of the job
• The machine/tool utilizing the diamond blade
• The preference of the operator
In the case of DRY cutting, the overwhelming popularity and quantity of hand-held saws and the flexible
nature of MK Diamond blades to professionally handle most ceramic, masonry, stone and concrete materials,
make the DRY cutting blade a very attractive tool. When using a DRY blade, the user must be aware of
distinct operating practices to ensure optimum performance. DRY cutting blades require sufficient airflow
about the blade to prevent overheating of the steel core. This is best accomplished by shallow, intermittent
cuts of the material with periods of “free-spinning" (for several seconds) between each cut, to maximize the
cooling process.
For WET cutting applications, MK has the exact blade to compliment both the material to be cut and the wet
cutting machine to be used. During cutting operations, liberal amounts of water act as a coolant to support
the cutting effectiveness and longevity of the WET blade. Additionally, using water adds to the overall safety
of cutting operations by keeping the dust signature down.
Know All You Can About the Material You Wish to Cut
46
MK-370EXP
ACCESSORIES
ITEM
NUMBER
DESCRIPTION
1.
158434
MK-225, 7 x 5/8 Arbor
2.
139311
MK-215, 7 x 5/8 Arbor
3.
153293
MK-315, 7 x 5/8 Arbor
4.
160131
Stand
5.
134577-MK
Dual 45° Flat Angle Guide
6.
134569-MK
90° Protractor
8.
152792
Dressing Stone
9.
152610
Ground Fault Circuit Interrupter
10.
160488
Side Table
47
MK-370EXP
ORDERING & RETURN INSTRUCTIONS
ORDERING INFORMATION
You may order MK Diamond products through your local MK Diamond distributor or, you may order direct
from MK Diamond.
NOTE: There is a $25.00 minimum order when ordering direct from MK Diamond. All purchases must be
made using VISA, MasterCard or American Express.
When
•
•
•
•
•
ordering direct from MK Diamond, please have the following information ready before calling:
The Model Number of the saw
The Serial Number of the saw
Where the saw was purchased and when
The Part Number for the part(s) being ordered
The Part Description for the part(s) being ordered
All parts may be ordered by calling toll free to – 800 421-5830 or 310 539-5221 and asking for Customer
Service. For technical questions, call – 800 474-5594.
RETURN MATERIALS POLICY
To expedite the service relative to the return of a product purchased through MK Diamond, please
observe the following:
NOTE: When returning all items, they must have been purchased within the previous twelve (12)
months.
• Have the Model Number of the saw
• Have the Serial Number of the saw
• Have the location of where the saw was purchased
• Have the date when the saw was purchased
• Contact Customer Service for approval to return the item(s)
• Obtain a Returned Goods Number (RGA) authorizing the return
• Follow the packaging instructions in the following section
• Ensure your item(s) are prepaid to the destination
For returned items, call toll free to – 800 421-5830 or 310 539-5221 and ask for Customer Service.
For technical questions, call – 800 474-5594 or 310 257-2845.
PACKAGING INSTRUCTIONS
• Remove the Blade guard and Support Angle Assembly
• Dry the saw before shipping
• When packing, include the following: MK-370EXP, Diamond Blade, Blade guard and Support Angle
Assembly and Adjustable Cutting Guide (Other Accessories are not required)
• Package the unit in its original container or one of comparable size (do not ship the unit partially
exposed)
• Ensure all parts are secured in the packaging to prevent moving
AUTHORIZED SERVICE CENTERS
For quicker repair time, you may contact MK Diamond Customer Service, toll free, at 800 421-5830 or 310
539-5221 for the Authorized Service Center closest too you or visit our web site at www.mkdiamond.com.
For technical questions, call – 800 474-5594.
48
MK-370EXP TILE SAW
OWNERS MANUAL & OPERATING INSTRUCTIONS
DOCUMENT NO. 160084
REVISION 301
04/09
MK Diamond Products, Inc.
1315 Storm Parkway
Torrance, CA 90501
Toll-Free: (800) 845-3729
Phone: (310) 539-2221
Fax: (310) 539-5158
www.mkdiamond.com
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