Ctd Dmc70a User manual

INSTRUCTION BULLETININSTRUCTION BULLETIN

INSTRUCTION BULLETIN

& MAINTENANCE MANUAL& MAINTENANCE MANUAL

& MAINTENANCE MANUAL

FOR CTD MODELFOR CTD MODEL

FOR CTD MODEL

DMC70 “MITRE MAX”DMC70 “MITRE MAX”

DMC70 “MITRE MAX”

06.01.08

CTD MACHINESCTD MACHINES

CTD MACHINES

2300 East 12300 East 1

2300 East 11th S1th S

1th S1th S

1th Streettreet

treettreet

treet

LosLos

Los Angeles, CAAngeles, CA

Angeles, CAAngeles, CA

Angeles, CA 90021-281790021-2817

90021-281790021-2817

90021-2817

(213) 689-4455 F(213) 689-4455 F

(213) 689-4455 FAX (213) 689-1255AX (213) 689-1255

AX (213) 689-1255AX (213) 689-1255

AX (213) 689-1255

e-mail:ctdsaw@ctdsawctdsaw@ctdsaw

ctdsaw@ctdsawctdsaw@ctdsaw

ctdsaw@ctdsaw.com.com

.com.com

.com WWW: http://wwwhttp://www

http://wwwhttp://www

http://www.ctdsaw.ctdsaw

.ctdsaw.ctdsaw

.ctdsaw.com.com

.com.com

.com

CTDMODELNO:______________________CTDMODELNO:______________________

CTDMODELNO:______________________

CTDSERIALNO:______________________CTDSERIALNO:______________________

CTDSERIALNO:______________________

MANUFACTURE DATE:________________MANUFACTURE DATE:________________

MANUFACTURE DATE:________________

DISTRIBUTOR PURCHASED THROUGH:DISTRIBUTOR PURCHASED THROUGH:

DISTRIBUTOR PURCHASED THROUGH:

((

(

IFANYIFANY

IFANY

)___________________________________________)___________________________________________

)___________________________________________

INDEXINDEX

INDEX

SUBJECT PAGE NO.

Machine Requirements................................................................................................................ 2

Installation and Set-Up................................................................................................................ 3

Electrical Installation...................................................................................................................... 5-6

Air Pneumatics.............................................................................................................................. 7-8

Safety Instructions......................................................................................................................... 10

How to Operate the Machine........................................................................................................ 11

Preventative Maintenance.............................................................................................................. 14

Repair and Service........................................................................................................................ 15

Spindle Diagrams.......................................................................................................................... 15-16

Spindle & Motor Mount Exploded View........................................................................................ 17

Top Plate Exploded View............................................................................................................... 18-20

Gage & Table Exploded View......................................................................................................... 21

Floor Stand Exploded View............................................................................................................ 22-23

Parts List...................................................................................................................................... 24

Machine Requirements:Machine Requirements:

Machine Requirements:

MODEL NO: _____________________ SERIAL NO:______________________

Cutting CapacitiesCutting Capacities

Cutting Capacities:

13”13”

13” (330mm) Blade Capacity

Height Width

4”(102mm) 8”(203mm)

-2-

Electrical Requirements:Electrical Requirements:

Electrical Requirements: Based on two motors per machine

Pneumatic Requirements:Pneumatic Requirements:

Pneumatic Requirements:

1 CFM per 10 strokes at 75 PSI (.043 cubic meters at 5.4 kg/cm2)

Dust Collection Requirements:Dust Collection Requirements:

Dust Collection Requirements:

1200 CFM at two 4” outlets

CuttingCutting

Cutting TT

Tool Requirements:ool Requirements:

ool Requirements:ool Requirements:

ool Requirements:

Heavy, rigid plate blades 13” blades: .120 to .130 plate

Motor Size RequiredAmperage Breaker Needed

1-1/2 H.P.,1 Phase 230 Volt 20 amps 30 amp

1-1/2 H.P., 3 Phase 230 Volt 9.2 amps 15 amp

1-1/2 H.P., 3 Phase 460 Volt 4.6 amps 15 amp

2 H.P., 3 Phase 208 Volt 5.7 amps 20 amp

2 H.P., 1 Phase 230 Volt 25 amps 40 amp

2 H.P., 3 Phase 230 Volt 10.8 amps 20 amp

2 H.P., 3 Phase 460 Volt 5.4 amps 15 amp

-3-

Installation and Set UpInstallation and Set Up

Installation and Set Up::

CTD 13”(330mm) Models DMC70A Automatic & DMC70M Manual Double Mitre Cross-Cut Saws:

The CTD saw you have purchased is designed to cut wood, aluminum, and plastic, with of course, the proper

blade and conditions. For the material you are cutting, please refer to the cutting instructions for

each material type. The DMC70 uses a NEMA 56 Frame 1-1/2 H.P., 3450 RPM, 60 HZ TEFC motor. CTD uses a

speed-up drive so that the blade will run at approximately 12,000 SFPM on a 13” (330mm) blade. The DMC70A and

the DMC70M are exactly the same machine with the exception of the Air Pneumatic

System. All instructions will pertain to

both

machines unless specifically excluded.

IMPORIMPOR

IMPORTT

TANTANT

ANTANT

ANT

: Before operating saw, please be sure to read the “SAFETY INSTRUCTIONS TO THE

OPERATOR” (on Page No. 10).

NoteNote

Note::

The floor stand must be leveled to the floor to eliminate vibration. Adjustable leveling feet are provided.

Adjust leveling feet as necessary by loosening lock nut. All machines have been completely assembled at the factory,

then disassembled for shipment.

Space Requirements:Space Requirements:

Space Requirements:

Assembly of Tables to Floor Stand:Assembly of Tables to Floor Stand:

Assembly of Tables to Floor Stand:

1. Assemble leg to table with 3/8-16 bolts and nuts provided. Turn table upside down and attach leg to

table with leg rising vertically.

Note

: The hole in the table (when mounted properly) should be toward

the front of the table and far away from the blade to attach Fence Support Bar, P/N 20M82

(see Diagram “A”). If you have purchased a Vision Gage Assembly, be careful to protect lined measuring

gage.

2. Attach Table, P/N BF17 to machine floor stand on Angle Bracket, P/N BF05A. Use 3/8-16 bolts and

nuts provided on angle bracket.

Diagram “A”

Blade InstallationBlade Installation

Blade Installation:

Before setting blades on spindle, always shut off or disconnect air supply. With motor OFFOFF

OFFOFF

OFF and power

disconnected, loosen front blade guard bolts. The main blade guard will hinge up and open, exposing blade and spindle.

Loosening the bolts automatically shuts down machine, due to an interlock switch located on hinged blade guard.

1. Remove Spindle Nut, P/N 9B1P36 or 37 and Outer Flange, P/N 8M02. If necessary, hold blade in

hand with a rag. Push down with a 1-7/16” wrench provided.

2. Place blade on spindle with tips pointing down. Make sure Slinger (inner flange P/N 8M03) and blade

surface are cleanclean

cleanclean

clean before putting blade on spindle. This is a critical surface and is ground within .0005

flatness. Any debris or dust will wear this surface. Wipe both surfaces (blade and slinger) with a clean rag.

A. The blade must ALWAYSALWAYS

ALWAYSALWAYS

ALWAYS rotate to the rear of the machine on the underside of the blade

(see Diagram “D” on page No. 4).

Always check rotation before cutting a piece of material.Always check rotation before cutting a piece of material.

Always check rotation before cutting a piece of material.

3. Replace Outer Flange, P/N 8M03 and nut

as before and tighten (refer to Diagram “B”).

Pull up with wrench. Do not over-tighten;

snugging the blade is all that is necessary.

Diagram “B”

-4-

Vision Gageision Gage

ision Gageision Gage

ision Gage Assembly:Assembly:

Assembly:Assembly:

Assembly:

The vision gage has been completely installed on your machine before shipment. It is then disassembled for

shipment.

1. Attach leg to table with 3/8-16 bolts and nuts provided.

2. Attach Table, P/N BF17D to machine floor stand on Angle Bracket, P/N BF05A. Use 3/8-16 bolts and nuts

provided on angle bracket.

3. Butt Vision Gage and table as close as possible to the edge of the base plate P/N 70M01.

A. With a scale or ruler touching the side of the tips of the blade, measure a distance away from the blade. Be sure ruler

and vision gage markings read the same. Adjust Left to Right as necessary.

4. Put outside Fence Gage, P/N 70M223-6’on top of lined Vision Gage so that lines terminate at fence. Attach

outside measuring gage with 3/8-16 bolts provided to Right Front Fence Angle, P/N 70M35R. Adjust gage

so measurement rule is correct. Follow instructions under No. 3A above. Attach Fence Support Bar,

P/N 20M82 with bolt and nuts provided to the table front. See Diagram “A” on page 3.

Attaching Measuring System to Machine:Attaching Measuring System to Machine:

Attaching Measuring System to Machine:

Diagram “F”

Diagram “D”

Front

Rear

-5-

Electrical InstallationElectrical Installation

Electrical Installation::

The CTD DMC70’s use two 1-1/2 H.P. single or three phase 3450 RPM, 60 HZ TEFC (totally enclosed fan cooled)

motors on a NEMA 56Z Frame. CTD uses a speed up drive so that the blade will run at approximately 3700 RPM.

Electrical installation should be performed by a qualified and certified electrician. A lock-out or disconnect switch

is located in front of the machine. It is a rotary switch to the left front of the machines. This disconnect switch is

used to shut off power to the machine and should be used whenever the blades are changed or at any time the

machine is serviced and the blades are exposed. A Dual Magnetic Starter, located inside the left side panel of the

machine protects the motor from overheating and will not allow the motor to restart itself after power outages or

undervoltage situations. The START button turns the motors “ON”. The STOP button turns the motors “OFF”.

Note: The STOP button must be pulled out before the START button will activate the motors.

Electrical Installation of Power to Starter by a Qualified Electrician:Electrical Installation of Power to Starter by a Qualified Electrician:

Electrical Installation of Power to Starter by a Qualified Electrician:

All wiring from the motors to the starter has been completed and tested at the factory several times. The voltage

has been clearly tagged.

DO NOT CONNECT ANY VOLTAGE THAT IS DIFFERENT THAN THE TAGGED

VOLTAGE, AS THIS MAY CAUSE SEVERE DAMAGE AND DANGER.. CONSULT FACTORY IF ANY

CHANGES ARE NEEDED.

Bring incoming power lines to the left side using hard wire and dust proof connectors.

Attach incoming power lines through Floor Stand to the rotary disconnect switch. Connect to terminals 2 & 4

for single phase motors, and to terminals 2, 4 & 6 for three phase motors. Always ground the green wire.

(See wiring diagram on Page 6.)

Single Phase Motor Replacement:Single Phase Motor Replacement:

Single Phase Motor Replacement:

Connect motor leads to T1 and T3 of overload relay for single phase motors. (See wiring diagram for single

phase motors on following page) Green ground wire must be grounded to enclosure. If using type “SO” wire

and plug, use a dust tight connector through Floor Stand and a grounded plug.

Be sure to check

rotation. If a

change is necessary, open the motor box located on the motor, and switch the #8 and the #5 wires. This reverses

the rotation of a single phase motor. The blade must rotate down and to the rear on the underside of the blade

(see Diagram “D” on Page No. 4).

Vision Gage Diagram

The hinged front blade guard must be tightened down in place properlyThe hinged front blade guard must be tightened down in place properly

The hinged front blade guard must be tightened down in place properly..

. An interlock switch, located on theAn interlock switch, located on the

An interlock switch, located on theAn interlock switch, located on the

An interlock switch, located on the

blade guard must be contacted or the motors will not start.blade guard must be contacted or the motors will not start.

blade guard must be contacted or the motors will not start.

-6-

Three Phase Motor Replacement:Three Phase Motor Replacement:

Three Phase Motor Replacement:

Connect motor line leads to T1, T2, & T3 of the overload relays. (See wiring diagram for three phase motors.)

Green ground wire must be grounded to enclosure.

Be sure to check rotation

as polarities may be different.

The blade must rotate down and to the rear on the underside of the blade (see Diagram “D” on Page No. 4). If a

change in rotation is necessary, reverse any two of the incoming power wires.

Example:

If the blades are running

backwards and incoming wires are connected White L1,Black L2,Red L3, switch the Black wire with the Red so

that Black is connected to L3 and Red is connected to L2. This will change the blades to rotate properly.

Motor Load Amperes Per MotorMotor Load Amperes Per Motor

Motor Load Amperes Per Motor

MOTOR SIZE 110 VOLT220 VOLT440 VOLT

1-1/2 H.P., 1 Phase 20 amps 10 amps N/A

1-1/2 H.P., 3 Phase N/A 4.6 amps 2.3 amps

2 H.P., 1 Phase 25 amps 12.5 amps N/A

2 H.P., 3 Phase N/A 5.4 amps 2.7 amps

Single Phase Wiring DiagramSingle Phase Wiring Diagram

Single Phase Wiring Diagram

Three Phase Wiring DiagramThree Phase Wiring Diagram

Three Phase Wiring Diagram

-7-

DMC70DMC70

DMC70 Air/PneumaticAir/Pneumatic

Air/PneumaticAir/Pneumatic

Air/Pneumatic WW

Wiring Diagramiring Diagram

iring Diagramiring Diagram

iring Diagram

-8-

DMC70DMC70

DMC70 Air/Pneumatic SystemAir/Pneumatic System

Air/Pneumatic SystemAir/Pneumatic System

Air/Pneumatic System::

The air pneumatic system on the DMC70 is simple to use and understand, and easy to operate. The main

components of the air system are shown below in the Air Circuit Piping Diagram. The system operates by

depressing the foot switch to actuate clamps. Pushing the foot switch again releases clamps. Once the clamps are clamped,

the operator depresses the two-hand control buttons simultaneously, P/N 70B5P79. This gives a signal to the main 4-Way

Control Valves for the left saw to change direction—allowing air to pass to the main drive Cylinder on the left, P/N

70B3P75. This pushes the saw forward to a limit switch. The speed of the stroke is controlled by the Speed Control

Valve, P/N70B3P60. The left saw reverses and returns to the rest position, then the right saw moves forward to the limit

switch and then reverses and returns to the rest position. The vertical clamps then release. If the two-hand control buttons

are released anytime during the cycle, then the cycle is terminated and the saws will return to the rear or rest position. The

cycle will have to be restarted by clamping and then pushing the two-hand buttons simultaneously.

Diagram “I“Air Circuit Piping for Model DMC70A

Air SupplyAir Supply

Air Supply—The air supply must be turned off and all electrics disconnected before making adjustment on the

power feed. A working pressure of 75 PSI (5.4kg/cm2) is required. An industrial-type compressor of at least

3 CFM (.085 cubic meters) is recommended. An additional 3 CFM (.085 cubic meters is required for Sawblade

Lubrication System. Aconveniently located valve is supplied by the user to shut off the air line. Saws should beSaws should be

Saws should beSaws should be

Saws should be

movedmoved

moved

by handby hand

by hand

when setting up machine.when setting up machine.

when setting up machine.

FRFR

FR—An Air Filter/Regulator is installed ahead of the air inlet to the machine. This system helps prevent foreign matter

from entering the system. The FR is comprised of two different components.

1. The

Air Filter Bowl is located on the left side and is provided with an automatic drain. This collects and

then releases foreign matter and condensation collected by the air filter.

2. The Pressure Regulator, which is located on top of the air filter, controls the amount of air pressure allowed

into the system. An operating pressure of 75 PSI is required. (This is set at the factory.)

Air Filter/RegulatorAir Filter/Regulator

Air Filter/Regulator

Two Hand Control and Selector Switch:wo Hand Control and Selector Switch:

wo Hand Control and Selector Switch:wo Hand Control and Selector Switch:

wo Hand Control and Selector Switch:

The saw movement is controlled by depressing the two-hand anti-tie down control buttons. Once the clamps are

actuated via the foot switch, the two-hand buttons are depressed. The buttons must be held down throughout the saw

cutting cycle. The stroke of the saw heads can be reversed at any time by releasing the two-hand buttons. The selec-

tor switch can be used to operate only the left saw, only the right saw, or both. The selector switch “left” will only allow

the two-hand buttons to operate the left saw. The selector switch “right” will only allow the two-hand buttons to

operate the right saw. Selector switch “both” allows the two-hand control to operate the left saw and then the right

saw, to complete a cycle.

Speed Control of Blades Movement:Speed Control of Blades Movement:

Speed Control of Blades Movement:

The forward speed of the left blade is controlled by the left Speed Control Valve, P/N 70 B3P60. The forward

speed of the right blade is controlled by the right Speed Control Valve, P/N 70B3P60. Both are located in the two-

hand button enclosure, located in the front of the machine. An easy way to remember is the

left

valve controls the

left

saw, and the

right

valve controls the

right saw.

-9-

Air Hold Down Clamps for the Material:Air Hold Down Clamps for the Material:

Air Hold Down Clamps for the Material:

Horizontal manual clamps are supplied standard on the hand operated DMC70M and two VerticalAir Clamps are

supplied standard on the pneumatic version, the DMC70A. These clamps help hold the material in place when the saw

blades are cutting the material. If clamps are not used, the operator

MUST HAND HOLD THE MATERIAL

. For the

hand operated DMC70M, the horizontal clamp pad or shoe needs to be adjusted so that it sits about 1/8” away from

the inside or rabbet of the material. When pulling the saw forward, the clamp will move forward to contact material and

push it towrds the front fences. The vertical clamps, on the DMC70A are controlled by two 4-Way Valves located in

the control panel on the lower right front side of the machine. The clamps are actuated by a foot switch when the two-

hand control buttons are depressed. A manual shut-off switch for the vertical air clamps is provided.

-10-

Safety Instructions to the Operator:Safety Instructions to the Operator:

Safety Instructions to the Operator:

KNOW YOUR CTD SAW

. Read this instruction manual carefully. Learn the operation, application, and

limitations, as well as the specific potential hazards peculiar to this machine.

2. Avoid accidental starting. Make sure switch is OFFOFF

OFFOFF

OFF before plugging in power cord. A Dual Magnetic

Starter is provided to give the operator added protection.

3. Always use a plug equipped with a ground.

4. Always keep blade guard in place. Do not wire-up or chain-up, so that blade is exposed.

5. Be sure all unnecessary tools are removed from machine before turning on power.

6. Use safety goggles. Also use a face or dust mask if operation is dusty.

7. Support work. To maintain control of work at all times, it is necessary that material be level with cutting

surface.

8. Wear proper apparel. Do not wear loose clothing or jewelry. Do not wear a tie or gloves. These items can

get caught in the moving parts of the machine.

9. Do not over-reach. Keep your proper footing and balance at all times.

10. Maintain your machine in top condition. Use proper blades. Clean machine weekly for proper maintenance.

11. Keep work area clean. Cluttered areas, benches and slippery floors invite accidents.

12. Avoid dangerous environments. Keep work area well illuminated.

13. Wear ear protection if exposed to long periods of very noisy shop operations.

14. Keep visitors away. All visitors should be kept a safe distance from work area.

15. Do not force the machine. The saw will do a better job and be safer to operate at the speed for which it was

designed. Forcing the saw can be very hazardous to the operator.

16. Use recommended accessories. Use of other accessories may be hazardous. Use this instruction manual or

consult CTD for the proper accessories available.

17. Do not drown the blade using a steady stream of coolant when cutting non-ferrous materials. Only spray

the work to cool it.

18. Be sure to use the proper blade for the particular material to be cut.

19. Disconnect power cord before adjusting, servicing, and before changing belts, or for installing accessories.

20. Safety is a combination of operator

COMMON SENSE

and

ALERTNESS

at all times when the machine is

being used.

21.

WARNING!!!WARNING!!!

WARNING!!! DO NOT ALLOW FAMILIARITY (GAINED FROM FREQUENT USE OF YOUR SAW)

TO DULL YOUR AWARENESS!! ALWAYS REMEMBER THAT A CARELESS FRACTION OF A SECOND

IS SUFFICIENT TO INFLICT SEVERE INJURY!!

Trouble Shooting the Pneumatic System for the DMC70 Cross-Cut Sawrouble Shooting the Pneumatic System for the DMC70 Cross-Cut Saw

rouble Shooting the Pneumatic System for the DMC70 Cross-Cut Sawrouble Shooting the Pneumatic System for the DMC70 Cross-Cut Saw

rouble Shooting the Pneumatic System for the DMC70 Cross-Cut Saw:

If there is no control over the speed of the cylinder stroke:

A. Replace either Left or Right Flow Control Valve (see exploded view on page 22, item #23). Another possible

cause are bad seals in the air cylinder. Listen for any air leakage.

B. If machine cycle will not start, or will not reverse, check the two-hand control buttons. Also, check for any

mechanical binding. Disconnect electricity and air supply from the machine. Manually move saws forward and back to

check for binding of the saw or feed mechanism. If machine is bound up, clear the blockage.

Remember, there is an

Interlock switch located under the hinged blade guard. The blade guard must be solidly in place and the bolts

tightened for the machine to operate.

-11-

How to operate the DMC70A or DMC70M:How to operate the DMC70A or DMC70M:

How to operate the DMC70A or DMC70M:

Before operating the machine, please read the “SAFETY INSTRUCTIONS TO THE OPERATOR”. Other

important information and features need to be learned before operating the machine.

Rotation:Rotation:

Rotation:

Both blades must rotate to the rear of the machine on the underside of the blades

(see Diagram “D”on Page No. 4.)

Blade Guard:Blade Guard:

Blade Guard:

It is important that the Finger Guards, P/N 20F180 are adjusted to completely cover the blade.It is important that the Finger Guards, P/N 20F180 are adjusted to completely cover the blade.

It is important that the Finger Guards, P/N 20F180 are adjusted to completely cover the blade.

The fingerThe finger

The finger-guards, attached to the hinged main blade guard, should be positioned around the material to give-guards, attached to the hinged main blade guard, should be positioned around the material to give

-guards, attached to the hinged main blade guard, should be positioned around the material to give-guards, attached to the hinged main blade guard, should be positioned around the material to give

-guards, attached to the hinged main blade guard, should be positioned around the material to give

maximum operator protection.maximum operator protection.

maximum operator protection.

The main blade guard can be hinged up by loosening the lock bolts on front of the

guard. An interlock switch locks out the power to the saws until the hinged guard is back

in place and the bolts are tightened completely. Disconnect the air supply and move the

blades forward manually exposing the blades Follow the instructions on page 4, Blade

installation, for changing the blades. After changing blades, replace blade guard and

tighten guard lock down bolts .

Be sure to provide clearance between the blade guard

and the top of the blade at the top of the stroke.

This label is attached to the blade

guards.

NEVER PUTNEVER PUT

NEVER PUT HANDS OR FINGERS NEAR OR UNDERHANDS OR FINGERS NEAR OR UNDER

HANDS OR FINGERS NEAR OR UNDERHANDS OR FINGERS NEAR OR UNDER

HANDS OR FINGERS NEAR OR UNDER THE MOVTHE MOV

THE MOVTHE MOV

THE MOV--

ING BLADE!!ING BLADE!!

ING BLADE!!

Use a piece of wood to remove short pieces from saw.

Cutting:Cutting:

Cutting: (see Diagram “J” and “K”)

A fixed Double Mitre Saw, such as the DMC70 operates by making two 45°cuts at one time. The machine “V”

notches the piece of material between the two blades. To make the first cut on a stick length;

1. Feed the material to the centerline of the machine so that

ONLYONLY

ONLY

the

left

blade

makes a trim cut. Be careful

not to overfeed beyond the centerline of the machine, as the piece can be hit with the right blade, possibly

throwing the unclamped piece into the saw blade, causing damage.

2. After making the trim cut, feed the material (now with a 45°mitre cut) to the stop at the desired length.

When using the Vision Gage, slide the moulding to the desired inside dimension, sighting down the line to the inside

of the rabbet of the moulding.

Move outside stop to same position and lock (see Diagram “K”).

3. Continue to feed length to stop as above, and make double mitre cuts until length is used.

RULE OF DOUBLE MITRE CUTTINGRULE OF DOUBLE MITRE CUTTING

RULE OF DOUBLE MITRE CUTTING

—If the piece to be cut cannot be held on both sidesboth sides

both sidesboth sides

both sides of the blade,

do not cut it!!!do not cut it!!!

do not cut it!!!

Minimum cut length on the DMC70A and DMC70M is 5 1/2” on the point to point dimensionMinimum cut length on the DMC70A and DMC70M is 5 1/2” on the point to point dimension

Minimum cut length on the DMC70A and DMC70M is 5 1/2” on the point to point dimension. ConsultConsult

ConsultConsult

Consult

factory for shorter lengths.factory for shorter lengths.

factory for shorter lengths.

Diagram “J” Diagram “K”

-12-

Cutting Speed:Cutting Speed:

Cutting Speed:

The blade is rotating at approximately 3700 RPM. When moving the blade through the material, the blade must

NEVERNEVER

NEVER

be allowed to dwell in the work. If fine finishes are required;

1. Use a sharp blade.

2. Use a

constant, even pressureconstant, even pressure

constant, even pressure

when cutting through material.

Clamping and Work Slippage:Clamping and Work Slippage:

Clamping and Work Slippage:

The work must never be allowed to move or vibrate as it is being cut. When the work is positioned against a

stop, it must be clamped either by the manual horizontal clamp or by vertical pneumatic air clamps. Never allow unclamped

work between the blade and the stop, as the blade can grab the material and throw it—thereby causing damage to the

blade, the machine, and possibly harming the operator. Vertical Clamps hold the material down, against the table base.

Vertical clamps are offered as standard equipment on the DMC70A air operated machine. Manual horizontal clamps are

standard on the DMC70M manually hand operated machine. Check your material for squareness, using a 90°square.

Material that is out of square will move when it is cut, thereby causing irregular mitres. See “IRREGULAR MITRES”,

Page No. 15. Additional tooling may be needed. Consult factory for information.

Vertical Clamp Assy.Manual 45° Horizontal ClampAssy.

CuttingCutting

Cutting WW

Wood:ood:

ood:ood:

ood:

While wood is generally soft and simpler to cut than aluminum, it requires that the material be held in place

as the blades pass through the material. CTD suggests using a Carbide Blade with an Alternate Top Bevel

(ATB) for lighter wood sections and picture frame mouldings. This type of blade gives the finest of finishes.

ONE

blade will cut all material perfectly. High lacquers or mica mouldings may require a special modified blade

for best results. Consult factory.

Never use a woodwood

woodwood

wood blade to cut aluminum,aluminum,

aluminum,aluminum,

aluminum,

as it will chip and fracture the

carbide tips of the blade.

Cutting Plastic:Cutting Plastic:

Cutting Plastic:

Plastic can be cut as easily as wood on the DMC70 models. However, because of its elastic properties, the material can

deflect as the blades pass through. Therefore, it is important to clamp the material as close as possible to the blade and

support it by use of fixtures. Additional tooling may be required. Special carbide blades are available for cutting plastics.

CuttingCutting

Cutting Aluminum:Aluminum:

Aluminum:Aluminum:

Aluminum:

As with cutting any material, it is important that aluminum be clamped properly. Precision blades are required

for accurate cutting. CTD suggests and uses a Triple Chip Grind on all its nonferrous Carbide Blades. When

cutting aluminum, or other nonferrous materials, it is essential that the blades be lubricated with a Saw Blade Lubrication

System or other blade lubricating system for the finest finish. See SAWBLADE LUBRICATION SYSTEM

below for more details.

Combination Blades:Combination Blades:

Combination Blades:

Any combination blade is basically an aluminum cutting blade. Significant blade life in between sharpenings

will be lost if a blade is used for cutting both aluminum and wood. The amount of production for either wood

or aluminum should be the determining factor in the assessment of the particular blade type to be used. Please

consult factory.

Sawblade Lubrication System:Sawblade Lubrication System:

Sawblade Lubrication System:

The Sawblade Lubrication System is used when cutting aluminum or other nonferrous material . This system normally

uses a Water Soluble Oil mixture of

10 parts water to one part oil.

The system operates by siphoning the lubrication up

the line to the spray nozzle. Any air leak will cause inconsistent fluid flow to the spray nozzle.

BEBE

BE SURE

your fluid is free

from chips and other debris. A fluid container supplied with the machine contains a One-Way Check Valve, Part No.

B3P96 at the end of the clear fluid line. This check valve helps to hold the lubrication in the line. However, after a couple

of minutes the lubrication or oil will back-flow into the container. Priming of the system may be necessary if the machine has

been standing without use. The system may be shut off by closing the toggle valve next to the vacuum pump. The fluid

must be clean or the vacuum pump will clog.

CTD Bio Lubrication System:CTD Bio Lubrication System:

CTD Bio Lubrication System:

The CTD biodegradable lubrication system operates by pulse spraying a minute amount of biodegradable lubri-

cant directly on to the saw tooth of the blade in time-measured increments. The majority of the lubricant then

dissipates with the heat of the cutting action. Chips coming off the blade are hot and dry, and are more easily collected

(see specific instructions included with system).

-13-

-14-

Cutting Wide Materials:Cutting Wide Materials:

Cutting Wide Materials:

Wider mouldings can easily be cut on the DMC70’s because of our unique below table saw head design. This design

allows for use of the top of the blade to cut, as well as the front of the blade. One blade completes the cut before the

second blade begins its cut. The blades cross-over an intersecting point to create a virtually scrap free cut.

Scrap:Scrap:

Scrap:

The DMC70’s operate by making two 45°mitres one right after the other. A “V” shaped piece is removed and falls into

the scrap drawer and bin located on the bottom front of the machine. Empty the scrap bin regularly. The blades cross-over

an intersecting point that virtually eliminates the scrap. Only the kerf of the two blades is lost in the cutting action.

Preventative Maintenance:Preventative Maintenance:

Preventative Maintenance:

The DMC70’s are relatively easy machines to operate and maintain. Below is a weekly check list of

general maintenance items. The best preventative maintenance advice is to

CLEAN THE MACHINE DAILY,

especially around the pivot points or moving parts of the machine.

Lubrication andLubrication and

Lubrication and Adjustments of BearingsAdjustments of Bearings

Adjustments of BearingsAdjustments of Bearings

Adjustments of Bearings::

INSPECTINSPECT

INSPECT

AND LUBRICAAND LUBRICA

AND LUBRICATE BEARING BLOCKS ONCETE BEARING BLOCKS ONCE

TE BEARING BLOCKS ONCETE BEARING BLOCKS ONCE

TE BEARING BLOCKS ONCE AA

AMONTHMONTH

MONTHMONTH

MONTH..

Bearing blocks and linear tracks

(see picture below) must be inspected and lubricated regularly in order to keep fine particules of dust out of the ball

bearings. Spindles are assembled using sealed, prelubricated ball bearings. It is not necessary to lubricate the spindle

bearings. They also use preloaded belleville springs. These springs eliminate the need for adjustments of bearings and

also greatly increase the life of these bearings. All air cylinders are “lube for life”.

Sound Levels:Sound Levels:

Sound Levels:

During normal running of the machine without cutting the typical sound range will be between 60-85 db.

Due to the wide variety of blades available, CTD cannot warrant that maximum allowable OSHA sound limits

can be met--particularly during the cutting cycle.

Grease here

General Maintenance Check List:General Maintenance Check List:

General Maintenance Check List:

Always disconnect electrical power and air supply.

1. Keep machine clean—especially around the bearing

track.

2. Blow off and clean:

A. Around air cylinder.

3. Check Air Filter Bowl for water and condensation

build up.

4. Remove any scrap pieces and dust build up from inside

floor stand cabinet.

5. Check monthly:

A. Lubricate bearing blocks as detailed on page 15.Lubricate bearing blocks as detailed on page 15.

Lubricate bearing blocks as detailed on page 15.Lubricate bearing blocks as detailed on page 15.

Lubricate bearing blocks as detailed on page 15.

B. Make sure motor pulley set screws are tight.

C. For excessive belt wear.

-15-

Repair and Service:Repair and Service:

Repair and Service:

Always use CTD factory authorized replacement parts and consult factory before making any repairs or

adjustments which may be unclear.

Irregular Mitres:Irregular Mitres:

Irregular Mitres:

Irregular mitre cuts are almost always caused by out-of square material. Check your

material with a 90°square and a straight edge. Material that has a high spot on the

bottom, will move or roll forward as it is being cut (even with pneumatic hold down

clamps), thereby causing the blade to cut more on the inside of the moulding than the

outside. Another cause of irregular mitre cuts is too thin a plate thickness on blades.

Blade plate thickness should be .120 to .130 on 13” blades. Blades will find the

easiest avenue to cut through material, and sometimes the blade plate will distort when

cutting heavier sections. The drawing below is an example of a cut when blade plate is

too thin for the material being cut.

Fence Alignment and 45Fence Alignment and 45

Fence Alignment and 45°Angle Adjustment of Blades:Angle Adjustment of Blades:

Angle Adjustment of Blades:Angle Adjustment of Blades:

Angle Adjustment of Blades:

All DMC70’s are present at the factory for perfect 45°double mitre cuts. If any adjustments are necessary:

1. Check alignment of front fences—left to right as shown in Diagram “F” on Page No. 4). Use a two foot

steel scale or quality precision straight edge and lay flat on table base. Butt edge against fence bracket and

long measuring gage. Touch the outside corner of the straight edge. If one side of the straight edge pulls

away from the fence, then the long fence gage is not in alignment with the Left Fence Bracket, P/N

70M35L.

2. Loosen 3/8-16 lock nut on Right Fence Bracket, P/N 70M35R and Fence Support Bar, P/N 20M26.

Clean all surfaces of dirt or dust, and re-assemble as before.

3. Re-align right fence to left fence with your straight edge. Once you are sure both fences are in alignment,

you now have a reference point to check your 45°mitre.

For Model DMC70: (see spindle drawing on page 16)

A. Hinge up Guard Cover, P/N 70F03E by loosening two front guard bolts.

B. Push saw forward to remove spindle housing P/N 9A05 from slide.

1. Remove hex cap screws with wrench and detach Spindle Housing, P/N 9A05 from slide P/N 70A04.

2. Using a vise with aluminum jaws, hold slinger and loosen jam nut No. 9, but leave jam nut on spindle.

3. Loosen set screws in pulley.

DMC70 SpindleDMC70 Spindle

DMC70 Spindle Assembly and Bearing Installation Instructions:Assembly and Bearing Installation Instructions:

Assembly and Bearing Installation Instructions:Assembly and Bearing Installation Instructions:

Assembly and Bearing Installation Instructions:

Grease Requirements and Grease Gun:Grease Requirements and Grease Gun:

Grease Requirements and Grease Gun:

Use a Pistol Grip Grease Gun P/N 70B7P55P/N 70B7P55

P/N 70B7P55P/N 70B7P55

P/N 70B7P55 to grease both block bearings

on the machine (see picture on Page 14). Squeeze handle four times to dispense grease.

Grease tube is P/N 70B7P56P/N 70B7P56

P/N 70B7P56P/N 70B7P56

P/N 70B7P56 with the following specification of KP 2 K-20 which is

suitable for harsh dry environments. Remember to lubricate monthlyRemember to lubricate monthly

Remember to lubricate monthlyRemember to lubricate monthly

Remember to lubricate monthly..

-16-

1. 90M01L DMC70 Spindle, Left

90M01R DMC70 Spindle, Right

2. 8M03 DMC70 Flange

3. 8M02 DMC70 Slinger

4. 9B2P04X Double Row Bearing

5. 9B2P06 Snap Ring

6. 2B4P28 Spindle Pulley 2.6”, .787 bore

7. 2BM23 Pulley Key

8. 9B2P05 Belleville Springs (4 required)

9. 151P16L Jam Nut, Left

151P16R Jam Nut, Right

10. 9B2P03 Bearing, Jam Nut side

11. 70B4P25 3VX450 DMC70 Drive Belt Banded

(2 required)

12. 9A05 Spindle Housing

13. 9B1P44L Spindle Nut, Left

9B1P44R Spindle Nut, Right

DMC70 SpindleDMC70 Spindle

DMC70 Spindle Assembly PartsAssembly Parts

Assembly PartsAssembly Parts

Assembly Parts

4. With jam nut on end of spindle thread (to protect threads), gently tap jam nut

toward slinger

side

using a lead or

rubber mallet. The spindle assembly will begin to move out of the spindle housing. Remove jam nut when assembly is

almost out. Spindle assembly consisting of Spindle No. 1, Slinger No. 3 and Bearing No. 4 will come out of housing.

Pulley No. 6 will slide out of housing when spindle assembly is removed. Bearing on jam nut side will slide out of

housing.

5. Replace bearings or belts as necessary.

6. Bearing on blade side is a press fit on spindle. If bearing on the blade side must be replaced, a puller must be used

to disassemble the bearing from the spindle.

7. Press new bearing No. 4 on to spindle, making sure spindle is square to the bore.

8. To re-install spindle in spindle housing, take Spindle

No. 1 (with Slinger No. 3 and Bearing No. 4), and slowly insert into housing.

9. Position Pulley No. 6 in center of housing. Place Key No. 7 in broached keyway in spindle. Position belts around

pulley, through housing. Push spindle through pulley, and through opposite wall of spindle housing.

10. From jam nut side of housing, place Belleville Springs No. 8 into housing. Be careful they are inserted correctly as

shown in diagram.

11. Now, push bearing No. 10 into housing and on spindle, being careful that bearing goes into housing square.

12. Replace jam nut No. 9 on spindle threads. Holding slinger No. 3 in vise, slowly tighten jam nut. This will cause

bearing to slowly push into housing. Tighten thoroughly until bearing bottoms out on shoulder of spindle.

13. Tighten set screws in pulley.

14. The face of Slinger No. 3 must be checked with a dial indicator to make sure it is running true. If it is not, it should

be refaced. To reface, use the side of a surface grinding wheel. Dress the face of the slinger by rotating spindle in

bearings slowly against the direction of the grinding wheel.

15. Replace housing on spindle Slide (P/N 70A04) with four hex cap screws.

16. Place belts around motor pulley and tighten.

-17-

Right Side Shown,

Left Opposite

-18-

DMC70 Top Plate Assembly

Top View

-19-

DMC70 Top Plate Assembly

Bottom View

-20-

DMC70 Plates Assembly

Parts List

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