INSTRUCTIONS for
®
F-1 1-292-C
November, 2000
C-69 and C-70
MACHINE CUTTING TORCHES
These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation and safe practices
for Oxy-Fuel gas equipment, we urge you to read our booklet Precautions and Safe Practices for Welding, Cutting, and Heating,
Form 2035. Do NOT permit untrained persons to install, operate or maintain this equipment. Do NOT attempt to install or operate
this equipment until you have read and fully understand these instructions. If you do not fully understand these instructions,
contact your supplier for further information.
The cutting torches covered by these instructions are listed by Underwriters Laboratories only when using cutting nozzles and
parts manufactured by ESAB Welding & Cutting Products to the specifications on file with Underwriters Laboratories, Inc. and
when they are used in the gas service for which they are designed and listed. The use of other cutting nozzles and parts that cause
damage or failure to the equipment will void the manufacturers warranty.
OPERATING INSTRUCTIONS
The C-69 is designed for use with low or medium pressure fuel gases, other than acetylene. The C-70 is for
use with medium pressure acetylene.
The C-69 and C-70 are not equipped with valves. They
must be used in conjunction with a manifold or valve
block for control of gas flow. All references to control
valves in these instructions apply to such a manifold or
valve block.
Connecting
Attach the oxygen and fuel gas supply hose to the regulators and to the manifold or valve block. Connect the
manifold or valve block to the torch, using hose at least
36 inches long. Make sure that all connections are gas
tight.
Attach the desired nozzle to the torch and tighten the
nozzle nut with a wrench. (See cutting charts on page
4 for correct nozzle.)
Be sure gas flow is sufficient for head or nozzle size.
Adjust regulators for proper psig pressures.
Adjust throttle valves properly.
Keep torch in good repair.
DO NOT throttle back gases to use large head or nozzle
on thin material.
Adjusting Gas Pressures
Oxygen: Open wide the cutting oxygen control valves
on the manifold or block. turn in the pressure-adjusting
screw on the oxygen regulator until the delivery-pressure gauge indicates the correct oxygen pressure (see
charts on page 4).
Acetylene (C-70): Open the acetylene control valve on
the manifold or block about one full turn. Turn in the
pressure-adjusting screw on the acetylene regulator
until the delivery-pressure gauge indicates the correct
acetylene pressure (see charts on page 4). Close the
acetylene control valve.
Flashbacks can cause serious burns.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
SAFETY PRECAUTIONS
These Safety Precautions are for your protection. They summarize precautionary information from the references listed
in Additional Safety Information section. Before performing any
installation or operating procedures, be sure to read and follow the safety precautions listed below as well as all other
manuals, material safety data sheets, labels, etc. Failure to observe Safety Precautions can result in injury or death.
PROTECT YOURSELF AND OTHERS - Some
welding, cutting and gouging processes are
noisy and require ear protection. Hot metal can
cause skin burns and heat rays may injure
eyes. Training in the proper use of the processes and equipment is essential to prevent
accidents. Also:
1. Always wear safety glasses with side shields in any work area,
even if welding helmets, face shields, or goggles are also required.
2. Wear flameproof gauntlet type gloves, heavy long-sleeve shirt,
cuffless trousers, high-topped shoes, and a welding helmet or
cap for hair protection, to protect against hot sparks and hot
metal. A flameproof apron may also be desirable as protection
against radiated heat and sparks.
3. Hot sparks or metal can lodge in rolled up sleeves, trousers
cuffs, or pockets. Sleeves and collars should be kept buttoned,
and open pockets eliminated from the front of clothing.
4. Protect other personnel from hot sparks with a suitable nonflammable partition or curtains.
5. Use goggles over safety glasses when chipping slag or grinding. Chipped slag may be hot and can travel considerable distances. Bystanders should also wear goggles over safety
glasses.
FIRES AND EXPLOSIONS - Heat from a flame
can act as an ignition source. Hot slag or sparks
can also cause fires or explosions. Therefore:
1. Remove all combustible materials well away from the work
area or completely cover the materials with a protective nonflammable covering. Combustible materials include wood,
cloth, sawdust, liquid and gas fuels, solvents, paints and coatings, paper, etc.
2. Hot sparks or hot metal can fall through cracks or crevices in
floors or wall openings and cause a hidden smoldering fire on
the floor below. Make certain that such openings are protected
from hot sparks and metal.
3. Do not weld, cut, or perform any other hot work on materials,
containers, or piping until it has been completely cleaned so
that no substances on the material can produce flammable or
toxic vapors. Do not do hot work on closed containers. They
may explode.
4. Have fire extinguishing equipment handy for instant use, such
as a garden hose, a pail of water or sand, or portable fire
extinguisher. Be sure you are trained in its use.
5. After completing operations, inspect the work area to be sure
that there are no hot sparks or hot metal which could cause a
later fire. Use fire watchers when necessary.
6. For additional information, refer to NFPA Standard 51B, Fire
Prevention in Use of Cutting and Welding Processes, which
is available from the National Fire Protection Association,
Batterymarch Park, Quincy, MA 02269.
FUMES AND GASES - Fumes and gases, particularly in confined spaces, can cause discomfort or injury. Do not breathe fumes or
gases from welding or cutting, Therefore:
1. Always provide adequate ventilation in the work area by natural or mechanical ventilation means. Do not weld, cut, or gouge
on materials such as galvanized steel, stainless steel, copper,
zinc, lead, beryllium, or cadmium unless positive mechanical
ventilation is provided. Do not breathe fumes and gases from
these materials.
2. If you develop momentary eye, nose, or throat irritation while
operating, this is an indication that ventilation is not adequate.
Stop work at once and take necessary steps to improve ventilation in the work area. Do not continue to operate if physical
discomfort persists.
3. Refer to ANSI/ASC Standard Z49.1 listed below for specific
ventilation recommendations.
4. WARNING: This product, when used for welding or
1. Always have qualified personnel perform the installation,
troubleshooting, and maintenance work. Do not operate or
repair any equipment unless you are qualified to do so.
2. Keep all oxy-fuel equipment free of grease or oil. Grease, oil,
and other similar combustible materials, when ignited, can burn
violently in the presence of oxygen.
3. Do not abuse any equipment or accessories. Keep equipment
away from heat and wet conditions, oil or grease, corrosive
atmospheres and inclement weather.
4. Keep all safety devices in position and in good repair.
5. Use equipment for its intended purpose. Do not modify it in
any manner.
1. Use the proper gas for the process and use the proper pressure reducing regulator designed to operate from the compressed gas cylinder. Do not use adaptors to mount the regulator on the cylinder. Maintain hoses and fittings in good condition. Follow manufacturers operating instructions for mounting the regulator to the gas cylinder.
2. Always secure cylinders in an upright position by chain or strap
to suitable hand trucks, benches, walls, post, or racks. Never
secure cylinders to work tables or fixtures where they may
become part of an electrical circuit.
3. When not in use, keep cylinder valves closed. Have the valve
protection cap in place on top of the cylinder if no regulators is
installed. Secure and move cylinders by using suitable hand
trucks. Avoid rough handling of cylinders.
4. Locate cylinders away from heat, sparks, or flame of a welding, cutting, or gouging operation. Never strike an arc on a
cylinder.
5. For additional information, refer to CGA Standard P-1, Precautions for Safe Handling of Compressed Gases in Cylinders:, which is available from the Compressed Gas Association, 1235 Jefferson Davis Highway, Arlington, VA 22202.
The following publications, which are available from the American
Welding Society, 550 N.W. LeJuene Road, Miami, FL 33126, are
recommended to you:
1. ANSI/AWS Z49.1 - Safety in Welding and Cutting.
2. AWS F4.1 - Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping That
Have Held Hazardous Substances/
3. AWS SP - Safe Practices - Reprint, Welding Handbook.
cutting, produces fumes or gases which
contain chemicals known to the State of
California to cause birth defects and, in
some cases, cancer. (California Health &
Safety Code §25249.5 et seq.)
EQUIPMENT MAINTENANCE - Faulty or improperly maintained equipment, such as torches, hoses
and regulators, can result in poor work, but even
more important, it can cause injury or death
through fires. Therefore:
GAS CYLINDER HANDLING - Gas cylinders, if mishandled, can rupture or explode violently. Sudden
rupture of a cylinder, valve or relief device can injure or kill you. Therefore:
ADDITIONAL SAFETY INFORMATION - For more
information on safe practices for oxy-fuel welding
and cutting equipment, ask your distributor for a
copy of Precautions and Safe Practices for Gas
Welding, Cutting, and Heating, Form 2035. Gas
apparatus safety guidelines are also available on
video cassettes from your distributor.
MEANING OF SYMBOLS - As used throughout
this manual: Means Attention! Be Alert! Your
safety is involved.
Means immediate hazards which, if not avoided,
will result in immediate, serious personal in-
jury or loss of life.
Means potential hazards which could result in
personal injury or loss of life.
Means hazards which could result in minor
personal injury.
2
SP-GA 10/98
Fuel Gases (C-69): Open the fuel gas valve on the
manifold or block about one full turn. Adjust the regulator to desired pressure (see chart on page 3). Close the
fuel gas valve.
Lighting
valves on the torch must be adjusted with the procedure shown in these instructions.
Note: Items (1) and (2) can be checked by measuring
the gas pressures
are available for this purpose.
at the torch. Gauge adaptors
Open the preheat oxygen control valve a small fraction of a turn. Open the fuel gas control valve wide and
light the gas at the nozzle with a lighter. Open the cutting oxygen control valve and adjust the flames to neutral with the preheat oxygen control valve.
Shutting Off
First close the cutting oxygen control valve, then the
fuel gas control valve, and then the preheat oxygen
control valve.
OPERATING PRECAUTIONS
Flow: There must be proper flow of gases for safe
operation and full performance. This requires the following three conditions: (1) the regulators that determine the inlet pressure to the hoses must be set to the
correct pressure: (2) the hoses and their connectors
must have adequate capacity for the job (hoses that
are too long, too small or have connectors with small
passageways can cause problems); and (3) the throttle
Backfire: Improper operation of the torch may cause
the flame to go out with a loud pop. Such a backfire
may be caused by contact of the nozzle with the work,
by spatter from the work, or by the use of incorrect gas
pressures, or by leakage at the cutting nozzle seats
due to dirt or nicks on the seats or to a loose nozzle nut.
Flashback: Under certain circumstances, the flame
may not pop out (backfire) but instead burn back inside
the torch with a shrill hissing or squeal. This is called a
flashback. A flashback should never occur if (1) the
equipment is in good condition; (2) preheat ports on
cutting nozzles or welding tips re cleaned frequently; (3)
operating pressures are correct; and (4) throttle valves
are adjusted properly. Should a flashback occur, IMMEDIATELY shut off the torch. Allow it to cool off for at
least a minute. Then check your nozzle or tip, gas
pressure, readjust regulators if necessary, and relight
the torch. If flashback recurs, send the torch handle and
welding head or cutting attachment to ESAB
Remanufacturing Center or to your distributor for repair.
3
CUTTING CHART - C-69 TORCH
1534 SERIES NOZZLES WITH NATURAL GAS
Steel Bevel Gas Pressure, psi Gas Flow, cfh Cutting Cleaning
Thickness Angle Nozzle Oxygen Natural Oxygen Natural Speed Drill Size
in. Degrees Size Cutting Preheat Gas Cutting Preheat Gas ipm Cutting*
1/2 20 6 50 40 4 170 120 60 22 53
30 6 50 40 4 170 120 60 20
45 6 50 50 5 170 140 70 16
1 20 6 50 35 3 170 100 50 15 53
30 6 50 35 3 170 100 50 15
45 6 50 50 5 170 140 70 14
2 20 8 50 25 1 315 80 40 13 46
30 8 50 30 2 315 90 45 13
45 8 50 35 3 315 100 50 12
* To clean preheat slots, remove external sleeve and use a soft bristle brush.
CUTTING CHART - C-70 TORCH
1502 SERIES NOZZLES WITH ACETYLENE
Steel Bevel Gas Pressure, psi Gas Flow, cfh Cutting Cleaning
Thickness Angle Nozzle Oxygen Acetylene Oxygen Acetylene Speed Drill Size
in. Degrees Size Cutting Preheat Cutting Preheat ipm Preheat Cutting*
1/2 20 1/2 50 13 13 170 60 60 22 65 53
30 1 1/2 50 13 13 170 60 60 20
45 1 1/2 50 14 14 170 65 65 16
1 20 1 1/2 50 11 11 170 50 50 15 65 53
30 1 1/2 50 11 11 170 50 50 15
45 1 1/2 50 14 14 170 65 65 14
2 20 4 50 7 7 315 40 40 13 61 46
30 4 50 9 9 315 45 45 13
45 4 50 11 11 315 50 50 13
3 20 8 50 5 5 480 40 40 10 57 39
30 8 50 5 5 480 40 40 10
45 8 50 8 8 480 50 50 9
CUTTING CHART - C-70 TORCH
1563 HS SERIES HIGH SPEED NOZZLES WITH ACETYLENE
Gas Pressure Cutting Speed* Gas Consumption
Nozzle Thickness psig. in./min. cu. ft./hr.
of Bevel Cut Cutt. Preh. High Cutt. Preh.
Size Partno. in. Oxy. Oxy. Acet. Precision Precision Drop Cut Oxy. Oxy. Acet.
1/2 HS 639171 3/8 - 1/2 21 - 25 24 - 26 27 - 30 52
3/4 HS 639172 3/4 20 - 24 23 - 26 26 - 28 95
1 HS 639173 1 90 2 - 6 1 - 3 19 - 21 20 - 23 23 - 25 105 7 - 14 5 - 9
1-1/2 HS 639174 1-1/2 14 - 17 16 - 20 21 - 23 150
2 HS 639175 2 13 - 16 15 - 19 18 - 20 235
2-1/2 HS 639176 1-1/2 90 3 - 8 2 - 4 12 - 15 14 - 17 16 - 19 245 6 - 18 6 - 12
4 HS 639177 4 8 - 10 9 - 13 12 - 15 280 8 - 18 8 - 12
* High Precision - Smooth cut, no slag adherence.
Precision - Smooth cut, slag easily removed.
Drop Cut - Maximum speed for cutting plate.
Cutting speeds shown are for clean medium to low carbon steel.
Type of steel and surface condition will always have a bearing on the cutting speed.
For cleaning 1563 HS nozzles, see NOTE in Maintenance Section.
4
MAINTENANCE INSTRUCTIONS
Changing Injectors
For all repairs other than those covered below,
send the apparatus to your ESAB Welding & Cutting Products distributor or to ESAB
Remanufacturing Center, 411 S. Ebenezer Road,
Florence SC 29501. Improperly repaired apparatus
is hazardous.
Cleaning Cutting Nozzles
If the cutting nozzle does not product straight, uniform
flames, or if the orifices of the nozzle become clogged,
clean then by hand with the correct size twist drills or
OXWELD Tip Cleaners. (See page 4 for the correct drill
sizes. Relationship between drill sizes and OXWELD
Tip Cleaner sizes shown on the tip cleaner case.)
Maintaining clean orifices is highly recommended for
reducing any incidence of flashbacks.
NOTE: If using a 1563 HS style nozzle, do NOT clean
with notched-type wires or twist drills since any metal
removal from the passages will destroy the precision
cutting characteristics. Use the non-cutting wires and
taper reamers included in the OXWELD HS Nozzle
Cleaning Kilt (Part No. 755F00). Cleaning instructions
are supplied with the kit.
For longer life, nozzles should be cleaned periodically
in a solution of OXWELD nozzle cleaning compound
(Part No. 761F00) made up and used as directed on the
jar in which it is packed.
1. Unscrew the body plug between the hose connections in the body. Remove the spring.
2. Turn the torch upside down and tap body gently
against a soft wood block. If the injector fails to fall
free, insert a standard No. 1032 machine screw,
1-1/4-in. or more in length, into the rear of the mixer
and pull it out.
3. Inspect the seat in the torch body to make sure that
it is clean and free of chips. Wipe the recess in the
torch with a clean cloth.
4. Carefully examine the injector to be inserted. If the
O ring is scuffed or worn, replace it with a new
one. If the injector is bent or if its tip has been nicked
or marred, it should be replaced.
5. Apply a thin film of silicone lubricant (17672) to the
outside of the O ring and insert the injector, using
a rotating motion for a positive O ring seal. Make
certain the injector tip is bottomed in the torch body.
6. Insert the spring in the torch body. Inspect the body
plug. If the O ring is scuffed or worn, replace it with
a new one. Tighten the body plug into the body.
Cleaning Injector or Mixer
1. Follow steps 1 - 3 in the preceding section.
2. Clean the C-69 injector (01Y68) with a No. 51 drill.
3. Clean the main passage of the C-70 injector
(101Z49) drill. Clean the cross drillings at the front
end of the C-70 mixer with a No. 58 drill.
4. Follow the steps 4 - 6 in the preceding section.
5
How to Order Replacement Parts
The drawing below shows all replacement parts available for the C-69 and C-70 torches. Parts are identical for both
torches except as indicated. To order, identify the required parts from the drawing and specify by part number and
name. Parts may be ordered from your ESAB distributor or from ESAB Welding & Cutting Products, Customer
Service Department, Florence, SC.
CUTTING OXYGEN
SOFT SOLDER
OXYGEN CONN ON C-70
FUEL GAS CONN. ON C-69
CONNECTION
SOFT SOLDER
C-70 ILLUSTRATED
7/8 - 20
NUT
33A56
*Supplied with injector.
C-69 without rock Part No. 28X47 C-70 without rock Part No. 28X53
C-69 with rock Part No. 28X52 C-70 with rock Part No. 28X54
RACK
152Z50
(32 PITCH)
BODY
SOFT SOLDER
CONNECTION
CUTTING OXYGEN
CONNECTION
11Z82
INJECTOR
01Y68 - LPHC (C-69)
101Z49 - ACET (C-70)
9/16 - 18 L.H.
FUEL GAS
999082
9/16 - 18
ORING
86W04*
9/16 - 25
SPRING
28Z43
FUEL GAS CONN. ON C-70
OXYGEN CONN. ON C-69
9/16 - 18
OXYGEN
CONNECTION
999083
PLUG
134Z55
ORING
86W85**
**Supplied with 134Z55.
6
7
ESAB Welding & Cutting Products, Florence, SC Welding Equipment
COMMUNICATION GUIDE - CUSTOMER SERVICES
A. CUSTOMER SERVICE QUESTIONS:
Order Entry Product Availability Pricing Delivery
Order Changes Saleable Goods Returns Shipping Information
Telephone: (800)362-7080 / Fax: (800) 634-7548
Telephone: (800)783-5360 / Fax: (800) 783-5362
Telephone: (800) 235-4012/ Fax: (888) 586-4670
B. ENGINEERING SERVICE: Telephone: (843) 664-4416 / Fax : (800) 446-5693
Welding Equipment Troubleshooting Hours: 7:30 AM to 5:00 PM EST
Warranty Returns Authorized Repair Stations
C. TECHNICAL SERVICE: Telephone: (800) ESAB-123/ Fax: (843) 664-4452
Part Numbers Technical Applications Hours: 8:00 AM to 5:00 PM EST
Performance Features Technical Specifications Equipment Recommendations
D. LITERATURE REQUESTS: Telephone: (843) 664-5562 / Fax: (843) 664-5548
E. WELDING EQUIPMENT REPAIRS: Telephone: (843) 664-4487 / Fax: (843) 664-5557
Repair Estimates Repair Status Hours: 7:30 AM to 3:30 PM EST
F. WELDING EQUIPMENT TRAINING:
Telephone: (843)664-4428 / Fax: (843) 679-5864
Training School Information and Registrations Hours: 7:30 AM to 4:00 PM EST
G. WELDING PROCESS ASSISTANCE:
Telephone: (800) ESAB-123 / Fax: (843) 664-4454 Hours: 7:30 AM to 4:00 PM EST
H. TECHNICAL ASST. CONSUMABLES :
Telephone : (800) 933-7070 Hours: 7:30 AM to 5:00 PM EST
Eastern Distribution Center
Central Distribution Center
Western Distribution Center
Hours: 7:30 AM to 4:00 PM EST
IF YOU DO NOT KNOW WHOM TO CALL
Telephone: (800) ESAB-123/ Fax: (843) 664-4452/ Web:http://www.esab.com
Hours: 7:30 AM to 5:00 PM EST
Oxweld is a registered trademark of ESAB Welding & Cutting Products.
F-11-292-C 11/2000 Printed in U.S.A.
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