Scotchman CPO-275 User manual

You have downloaded a manual for our
MODEL CPO-275 COLD SAW
Please download our
Cold Sawing Guide too.
Read both the manual and guide
before operating this saw!!

www.scotchman.com
MODEL
CPO-275
COLD SAW
Printed May 2021
SCOTCHMAN IND. - 180 E US HWY 14 - PO BOX 850 - PHILIP, SD 57567 Phone: [phone]
S/N B39130421 & AFTER

Page 2
TABLE OF CONTENTS
SECTION DESCRIPTION PAGE
1.0 INTRODUCTION 4
2.0 SAFETY PRECAUTIONS 4
3.0 WARRANTY 5
4.0 INSTALLATION & SET-UP 6
4.1 Physical Dimensions 6
4.2 Machine Moving Procedures 8
4.3 Physical Inspection 10
4.4 Electrical Requirements 11
4.5 Machine Start-up 16
4.6 Guard Adjustment 17
4.7 Coolant System 18
5.0 MAINTENANCE & LUBRICATION 18
5.1 Lubrication 18
5.2 Cutting Oils & Lubricants 19
5.3 Scheduled Maintenance 19
5.4 Coolant Pump Maintenance 20
6.0 MACHINE OPERATION 22
6.1 Installing Blades 22
6.2 Saw Capacities 24
6.3 Selecting The Proper Blade & Cutting Speed 25
6.4 Material Clamping 26
6.5 Miter Locking Device 28
7.0 OPTIONAL EQUIPMENT 30
7.1 Power Vise 30
7.1A Power Vise Set-up & Maintenance 30
7.1B Replacing the Spindle in the Air Vise 32
7.1C Replacing the Seals in the Air Vise 33
7.2 Power Down Feed 34
7.2A Power Down Feed Set-up & Maintenance 34
7.2B Stroke Control Adjustment-Power Down Feed 36
7.2C Guard Adjustment-Power Down Feed 38
7.2D Installing Blades-Power Down Feed 40
7.2E Power Down Feed Trouble Shooting 42
7.3 Material Supply Tracks 44
7.4 Discharge Tracks with Scale 46

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TABLE OF CONTENTS
SECTION DESCRIPTION PAGE #
7.5 Special Vise Jaws 48
7.6 Lock-Out Disconnect Switch 48
7.7 Laser Light 48
7.8 Pneumatic Schematic (Power Down Machines) 49
8.0 TROUBLE SHOOTING GUIDE 50
8.1 Electrical Trouble Shooting 50
8.2 Breakage or Excessive Dulling of Blades 51
8.3 Coolant System 52
8.4 Gear Replacement 53
9.0 PARTS LISTS 54
9.1 Saw Head 54
9.2 Vise Assembly 56
9.3 Guard Assembly 58
9.4 Motor Assembly 60
9.5 Electrical 62
9.6 Coolant System & Base 64
9.7 Cast Base & Pedestal 66
9.8 Material Stop 30 Inch (76 CM) 68
10.0 OPTIONAL EQUIPMENT PARTS LISTS 70
10.1 Power Vise Assembly 70
10.2 Power Down Feed Assembly 72
10.2A Power Down Feed Controls 74
10.2B Power Down Feed Electric Controls 76
10.2C Guard Assembly (Power Down Feed) 78
10.3 10 Foot (303 CM) Supply Track 80
10.4 Discharge Tracks (48, 84 & 120 Inch) 82
10.5 Cutting Coolants & Oils 84
10.6 Lock-Out Disconnect Switch 84
10.7 Laser Light 86
11.0 STOCK BLADES 88

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1.0 INTRODUCTION
The CPO-275 Cold Saw is designed to cut solids, tubes, flats and other profiles in grades of material
that range from hot and cold rolled steel, annealed tool steels, stainless, aluminum, brass, copper,
synthetics and extrusions.
Cold sawing is a process similar to a milling process. In most cases, this, combined with the self
centering vise feature, gives a finished cut that does not require any secondary machining or de-burring.
Since milling spindle speeds are used in cold sawing, there are several things that are required to
achieve quality results. The selection of the proper pitch (number of teeth) on the blade and the proper
spindle speed for the type of material being cut are critical. Proper material clamping and a good
quality coolant are also important.
Cold sawing has several advantages over band saws and abrasive saws. Besides the mill quality cut, cold
saws have the ability to generate faster cutoff times than band saws.
There are no sparks and excessive noises that are associated with abrasive cutoff saws.
Cold saws also offer the advantage of blades that can be re-sharpened until the diameter of the blade
will no longer cut through the material. The self centering vise allows for easy changeover to special
clamping jaws, for profiles and extrusions. Having two spindle speeds enables the user to cut a wide
range of materials.
By adding the power vise and power down feed options, the saw can be converted to a semi-automatic
machine at a very reasonable price.
2.0 SAFETY PRECAUTIONS
1. Any individual operating this machine must be qualified, responsible and well instructed. This
manual is not intended to teach untrained personnel how to operate equipment.
2. NEVER operate this machine with the guard disconnected or removed.
3. Wear eye protection, at all times, when operating or observing this machine in operation.
4. Do not wear loose fitting clothing, gloves or jewelry when operating this machine.
5. All electrical connections shall be made by a qualified electrician. This machine must be grounded
in accordance with the National Electric Code.
6. Disconnect the machine from the power source before performing maintenance or changing
blades.

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7. Practice good housekeeping. Keep the area around the machine clean and dry.
8. When sawing, always support long pieces and make sure that the material is properly clamped.
9. Keep the guard, as well as all other parts of the saw, in good working condition. Replace worn
parts promptly.
10. Do not alter or modify this machine in any way without written permission from the
manufacturer.
11. This machine is top heavy and must be anchored to the floor.
3.0 WARRANTY
Scotchman Industries, Inc. will, within three years of the date of purchase, replace F.O.B. the factory or
refund the purchase price for any goods which are defective in materials or workmanship, provided the
buyer, at the seller’s option, returns the defective goods freight and delivery prepaid to the seller, which
shall be the buyer’s sole and exclusive remedy for defective goods.
This warranty does not apply to machines and/or components which have been altered, changed or
modified in any way or subjected to abuse and abnormal use, inadequate maintenance and lubrication or
subjected to use beyond the seller’s recommended capacities and specifications.
In no event shall the seller be liable for labor cost expended on such goods or consequential damages.
The seller shall not be liable to the purchaser or any other person for loss or damage directly or
indirectly arising from the use of the goods or from any other cause.
No officer, employee or agent of the seller is authorized to make any oral representations or warranty
of fitness or to waive any of the foregoing terms of sale and none shall be binding on the seller.
Any electrical changes made to the standard machine due to local electrical code variation must be paid
by purchaser.
As we constantly strive to improve our products, we reserve the right to make changes
without notification.
This warranty is effective December 1, 2009.

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4.0 INSTALLATION AND SET-UP
⌦CAUTION:THISSECTIONDISCUSSESINSTALLATION,SET-UPANDSTART-UP
PROCEDURES. PLEASE READ IT THOROUGHLY BEFORE OPERATING THIS
MACHINE. IF YOUR MACHINE IS EQUIPPED WITH EITHER THE POWER VISE OR
THE POWER DOWN FEED OPTION, READ ALL SECTIONS CONCERNING THESE
OPTIONS BEFORE OPERATING THE SAW.
4.1 PHYSICAL DIMENSIONS
SEE FIGURE 1 ON THE FOLLOWING PAGE.
DIMENSIONS INCHES CM
A. HEIGHT 68.5 175
B. FLOOR TO VISE 36.4 92.4
C. BASE HEIGHT 32 81
D. VISE OPENING 4 10
E. VISE DEPTH 2 5
F. BASE WIDTH 21.5 55
G. BASE DEPTH 17.25 44
H. MOUNTING HOLE CENTERS 24.5 62
I. WIDTH 26.2 66
J. WEIGHT 430 LB. 195 KG.

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FIGURE 1

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4.2 MACHINE MOVING PROCEDURES
SEE FIGURE 2 ON THE FOLLOWING PAGE.
This machine is shipped on a pallet and can be moved to the installation location by means of a fork lift.
⌦CAUTION: THIS MACHINE IS TOP HEAVY AND MUST BE MOVED WITH CARE, ON
HARD, FLAT SURFACES ONLY.
All saws are shipped with the head locked in the DOWN position. Before lifting the machine, release the
head on manual and power vise saws by cutting the banding strap and allowing it to move to the UP
position. On machines equipped with the power down feed option, release the upper stroke control collar
and allow the head to move to the UP position. Lift the machine, using the lifting eyelet provided. SEE
FIGURE 2. Remove the pallet and place the machine in its final location. This machine is top heavy and
must be anchored to the floor.

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FIGURE 2

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4.3 PHYSICAL INSPECTION
Once the machine is located, check it for any possible damage incurred in shipment. Remove the lifting
eyelet and install the draw handle.
⌦CAUTION: DO NOT USE THE LIFTING EYELET FOR ANY MACHINES OTHER THAN
THIS SAW. MAKE SURE THAT THE DRAW HANDLE HAS A JAM NUT ON THE
THREADS BEFORE INSTALLING IT ON THE SAW. IF THE HANDLE IS INSTALLED
WITHOUT THE JAM NUT, IT MAY CONTACT THE GEARS INSIDE THE HEAD.
After the draw handle has been installed on manual and power vise machines, remove the cover from the
electrical control box and connect the trigger switch wires. Remove any other packing material and
draw the saw head to its DOWN position to make sure that the guard opens properly. The guard should
close completely when the head is up and open freely as the head travels down. If the guard is not
functioning properly, REFER TO SECTION 4.6 for the manual machines or SECTION 7.2C for
machines equipped with the power down feed option. With the head in the DOWN position, check the oil
level in the gear box through the sight glass in the casting just below the draw handle. If your saw is
equipped with either the power vise or the power down feed option, REFER TO SECTIONS 7.1 THRU
7.2, for additional information.

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4.4 ELECTRICAL REQUIREMENTS
SEE FIGURES 3-1 THRU 3-8 ON THE FOLLOWING PAGES.
⌦CAUTION: TO PREVENT DAMAGE TO THE MACHINE AND DANGER TO THE
OPERATOR, ALL ELECTRICAL CONNECTIONS MUST BE MADE BY A QUALIFIED
ELECTRICIAN. THIS MACHINE OPERATES WITH LIQUID COOLANT AND MUST BE
GROUNDED IN ACCORDANCE WITH NATIONAL ELECTRIC CODES.
All three phase motors are dual speed and will operate on one voltage only. Single phase motors are
available in the 60 RPM speed, only. If the machine is not the same voltage as your plant voltage, you
will have to replace the motor and rewire the transformer and coolant pump. To insure satisfactory
performance, the supply voltage should be (+ or -) 10% of the motor voltage rating. Check the motor
data tag for full load current requirements. On machines equipped with the variable speed drive, the
drive can be used as a phase converter.
THE ELECTRICAL DIAGRAMS FOR THIS MACHINE ARE ON PAGES 12 THRU 18, FIGURES 3-1
THRU 3-8. For supply lines ten feet (303 cm) or shorter, we recommend 12 gauge wire. For lines longer
than ten (303 cm), we recommend 10 gauge wire. We do not recommend supply lines over twenty feet
(606cm) in length.
CPO-275-LT. (30-60 RPM)
MOTOR VOLTAGE FULL LOAD CURRENT HORSEPOWER
HI LOW HI LOW
208 4.9 4.7 1.5 .75
230 4.7 4.5 1.5 .75
460 2.6 2.5 1.5 .75
230 1/Phase 9.4 1.5
CPO-275-HT. (60-120 RPM)
MOTOR VOLTAGE FULL LOAD CURRENT HORSEPOWER
HI LOW HI LOW
208 7.9 5.7 2 1.6
230 7.7 5.5 2 1.6
460 4 2.9 2 1.6
230 1/phase 9.4 1.5

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MANUAL OR PK W/ TRIGGER SWITCH
FIGURE 3-1

Page 13
PKPD W/EMERGENCY STOP
FIGURE 3-2

Page 14
1-PHASE MOTOR W/TRIGGER SWITCH
FIGURE 3-3

Page 15
1-PHASE MOTOR W/E-STOP
SERIAL #'S B3431 & UP
FIGURE 3-4

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4.5 MACHINE START-UP
Before starting this machine, take the time to review the operator’s manual thoroughly, to familiarize
yourself with all of the functions of the machine.
We strongly urge you to follow OSHA directive CFR-1910.147 (effective 09-09-90) regarding lock-out,
tag-out procedures. Keep in mind that the directive refers to all hazardous energy sources, not just
electrical.
On machines equipped with either a power vise or a power down feed, the air supply must also be
disconnected and locked or tagged. If your plant is not equipped with lock-out capabilities, Scotchman
offers a lock-out switch as an option for this machine. If you are interested in this option, REFER TO
SECTION 7.6 or contact your local dealer or the factory.
Do not install a blade on the saw until after it has been powered and cycled several times. To power
manual and power vise machines, turn the HI-LOW switch to either the HI or LOW position and
use the trigger switch mounted in the draw handle to start the motor. Always turn the HI-LOW switch
to the OFF position when the saw is not in use.
On machines equipped with a 1-phase motor, use the trigger switch to start the motor.
To power machines equipped with the power down feed option, turn the HI-LOW switch to either the HI
or LOW position and depress the foot switch to start the blade.
You must use the emergency stop switch to turn off the coolant pump. When the emergency stop switch is
used, it must be manually reset by pulling the switch back out.
Always turn the HI-LOW switch to the OFF position when the saw is not in use.
Once the machine has been powered, check the rotation of the spindle. There is an arrow on the guard
showing the proper rotation. If the rotation is not correct, the electrician will have to switch two of the
three line wires.
Check the rotation of the coolant pump, also. There is an arrow cast in the top of the pump.
If the saw is equipped with either the power vise or the power down feed options, SEE SECTIONS 7.1
THRU 7.2, for additional information on electrical and air connections.

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4.6 GUARD ADJUSTMENT-MANUAL MACHINES
SEE FIGURE 4 BELOW.
FOR GUARD ADJUSTMENT PROCEDURES ON SAWS EQUIPPED WITH THE POWER DOWN
FEED OPTION, REFER TO SECTION 7.2C.
The proper adjustment of the blade guard on this machine is crucial to the operation of the machine and
the safety of the operator. If the guard will not maintain proper adjustment, check the guard mounting
bolts and rivet joints in the guard and linkage, for wear. Replace worn parts promptly.
USE THE FOLLOWING STEPS TO ADJUST THE BLADE GUARD:
1. Turn the power OFF and disconnect from the power source.
2. With the head in the UP position, loosen the jam nut (G) on the guard cam (F).
3. Manually hold the guard open approximately 1/8 of an inch (3mm) at point H.
4. Rotate the guard cam (F) counterclockwise until there is tension on the linkage bar. Re-tighten the
jam nut (G).
5. Manually cycle the head up and down several times, making sure that the guard operates
properly.
FIGURE 4

4.7 COOLANT SYSTEM
5.0 MAINTENANCE AND LUBRICATION
5.1 LUBRICATION
SEE FIGURE 5 BELOW.
Before operating the saw, grease the pivot pin (A) and apply penetrating oil to the vise spindle and
guides (B and C). Once a week, grease all of the pivot pins and oil all of the rivet connections on the
guard linkage (D). Clean the chips out of the vise at least once a day and apply penetrating oil to the
spindle and guide pins. Clear the chips with a brush or similar device. DO NOT use compressed air.
If your saw is equipped with a power vise or power down feed option, SEE SECTIONS 7.1 THRU 7.2,
for additional information.
FIGURE 5
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The coolant reservoir has a capacity of eight (8) gallons (30.3 liters). One gallon of coolant is shipped
with the saw. For normal cutting, it should be mixed in a ratio of one part coolant to seven parts water.
In conditions of heavier cutting, the ratio of water should be reduced to five parts. We recommend
using only pure, synthetic, water soluble cutting oils. There is a sieve screen in the back of the cast vise
base. To aid in adding coolant, the sieve screen can be removed with a screwdriver. Do not remove the
sieve screen if the base of the saw is not completely clean and free of chips. The plastic panel on the
back of the machine base can also be removed, to aid in adding coolant. We recommend pre-mixing
the coolant before adding it to the saw. When cutting alloy steels such as stainless steel, we recommend
a special mix coolant designed for these applications. For additional information on available coolants,
SEE SECTION 10.5.
D
B & C
A

5.2 CUTTING OILS AND LUBRICANTS
5.3 SCHEDULED MAINTENANCE
A program of scheduled maintenance should be set up and documented according to your application
and the frequency with which you use this machine. The following is a list of some important things that
should be included in a scheduled maintenance program.
1. EVERY 250 HOURS OR 3 MONTHS:
Drain the coolant reservoir and flush it out. Refill the coolant reservoir with new coolant.
This will extend the life of the coolant pump considerably.
2. EVERY 500 HOURS OR 6 MONTHS:
Drain the gear oil from the saw head and flush with a petroleum product. Refill the saw head
with Mobil 600W Super Cylinder Oil. Check the condition of the pivot pins on the head and
Check the complete saw for loose connections in the electrical and air systems. If your saw is
equipped with the power vise or power down feed options, SEE SECTIONS 7.1 THRU 7.2, for
additional information. Since every application is different, each user must design and implement
a scheduled maintenance program that fits his applications.
Page 19
on the guard.
SECTION 10.5 lists Scotchman’s parts numbers for cutting oils and lubricants. Using high quality
lubricants and oils will greatly increase the life of this equipment. We recommend using only pure,
synthetic, water soluble cutting oil for coolant. For the saw head, use a non-EP additive ISO-460 gear
oil specified for worm gears. Oils containing EP additives may degrade or damage bronze gears and
must be avoided. Mobile 600WSuper Cylinder Oil is highly recommended and available from the
factory under P/N 075758.
On saws equipped with the power down feed, use SAE 10W (ISO 32) non-foaming hydraulic oil, such
as Mobil DTE 10 or equivalent. On saws equipped with air lubricators, use a high quality (ISO 22) air
line lubricant designed for automatic oilers.