INSTRUCTIONS for
F-9458-P
February, 2003
C-57-R CUTTING TORCH
Cutting Range using acetylene............... 1/8" - 12" (3 - 300 mm)
Cutting Range using other fuel gases ..... 1/8" - 4" (3 - 100 mm)
Cutting Nozzles .......................................................... 1500 series
Torch-Hose Connections ............ ORS-B-size (41/64" - 18 fem.)
Torch Overall Length ........................................... 21-in. (532 mm)
Weight ...................................................................... 4-lbs. (1.8 kg)
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 ESAB's free 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 torch covered by these instructions are listed by Underwriter's Laboratories only when used in combination with
cutting nozzles and parts manufactured by ESAB Welding and Cutting Products to the specifications on file with Underwriter's
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 voids the manufacturer's warranty.
OPERATION INSTRUCTIONS
CONNECTING
1. Attach regulators to the oxygen and fuel gas cylinders. Follow all instructions supplied with the regulators.
2. Attach oxygen and fuel gas hoses to the regulators
and to the torch, after making sure all metal seating
surfaces are clean. Tighten all connection nuts with
a wrench.
3. Attach nozzle to torch head, and tighten connection
nut with a wrench.
4. Check valve packing nuts for tightness.
ADJUSTING GAS PRESSURES
Low-Pressure Fuel Gas: Be sure the torch fuel gas
valve is closed. Open the supply valve.
Medium-Pressure Fuel Gas: Open the fuel gas valve
about one turn. Turn in the pressure-adjusting screw on
the fuel gas regulator until its delivery-pressure gauge
registers the desired pressure (see cutting chart on page
4). Then immediately close the fuel gas valve.
Oxygen: Open the cutting oxygen valve by depressing
its valve lever fully. Turn in the pressure-adjusting screw
on the oxygen regulator until its delivery-pressure gauge
registers the desired pressure (see cutting chart on page
4). Then release the cutting oxygen lever.
NOTE: When gaugeless regulators are used, do not
open torch valves. Merely turn in the pressureadjusting screws to the desired pressures as
indicated on the scales of regulator caps.
TESTING FOR LEAKS
Every cutting outfit should be thoroughly tested for leaks
after it is first hooked up, and at regular intervals thereafter. After all connections have been made, make sure
all valves on the torch are closed. Then turn in the regulator pressure-adjusting screws until the oxygen delivery-pressure gauge registers 60 psi and the fuel gas
delivery-pressure gauge registers 10 psi. Using Leak
Test Solution suitable for oxygen service, such as P/N
998771 (8 oz. container), check for leaks at the cylinder
valves, the cylinder-to-hose connections, and the hoseto-torch connection. If this does not stop the leakage,
close the appropriate cylinder valve, open the corresponding torch valve to remove all pressure from the
line, and finally release the regulator pressure-adjusting screw by turning it counterclockwise. Then break
the leaky connection, wipe metal seating surfaces with
a clean, dry cloth, and examine them for nicks and
scratches. Remake the connection(s) and retest. Do
not try to light the torch until you are satisfied that all
connections are gas-tight.
After lighting the torch and adjusting the flames, use
leak test solution to check the leakage at all torch valves
and at the nozzle nut.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
LIGHTING AND FLAME ADJUSTMENT
MAINTENANCE INSTRUCTIONS
1. Open the preheat oxygen valve on the torch about
two turns.
2. Open the fuel gas valve on the torch about 1/8 turn
(about two turns if using low pressure fuel gas) and
light the gas at the nozzle with a friction lighter. DO
NOT USE A MATCH. Use of a match could seriously
burn your hand.
3. If using acetylene, open the fuel gas valve until preheat flames leave the end of the nozzle and then close
just enough to open cutting oxygen valve and then
readjust the preheat flames to the shortest length by
opening the preheat oxygen valve gradually.
The above procedure usually provides adequate preheat for the nozzle in use. If desiring to change the
preheat flames, always hold the cutting oxygen valve
open while readjusting the preheat oxygen and fuel
gas valves.
SHUTTING OFF
Release the cutting oxygen valve lever. Then close the
fuel gas valve, and finally the preheat oxygen valve.
If operations are to be released from the torch, hoses,
and regulators do the following:
1. Close each cylinder or station valve.
2. Open torch valves.
3. After relieving the gases, back out the pressure adjusting screw of each regulator and close the torch
valves.
OPERATING PRECAUTIONS
Backfire: Improper operation of the torch may cause
the flames to go out with a loud 'pop'. Such a backfire
may be caused by contact of nozzle with the work, by
the use of incorrect gas pressures, or by leakage at the
cutting nozzle seats due to dirt or nicks on seats or to a
loose nozzle nut.
Flashback: Under certain exceptional 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 are cleaned frequently;
and (3) operating pressures are correct. Should a flashback occur, IMMEDIATELY shut off the torch. Allow it to
cool off for a least a minute. Then check your nozzle or
tip, gas pressures, readjust regulators if necessary, and
relight the torch. If flashback recurs, send the cutting
torch with nozzle to your distributor for repair.
For all repairs other than those covered below, send the
apparatus to your welding equipment distributor. Improperly repaired apparatus is hazardous. Parts shown
in the illustration on page 3 that require brazing operation are provided for experienced and qualified persons
engaged in the repair of this apparatus.
Preheat Valves: Leakage around either valve stem can
usually be corrected by tightening the packing nut slightly.
If either preheat valve fails to shut off completely, remove the valve stem assembly from the torch. With a
clean cloth, wipe the ball in the end of the stem. Then
reinsert valve stem assembly. If then the valve does not
shut off completely, send the torch to a repair station for
reseating of the body.
After installing a new valve stem assembly, tighten the
packing nut until the valve stem can be turned only with
great difficulty, and set the unit aside, for three or four
hours at least, to set the packing. Then back off the
packing nut until the valve stem turns readily.
Cutting Valve Leakage: If leakage develops in the cutting valve, replace cutting valve seat (32Z01).
To Replace Cutting Valve Seat
1. Remove (4) four screws (61608849) from the handle
(4689) and slide the handle forward as far as possible. Remove the thumb piece (3634) from the lever (923640) and the pusher pin (923634) from the
pusher rod guide (923635).
2. Mark the location of the pusher rod guide on the cutting oxygen tube (923633). Loosen the two set screws
(6133-0907) on the pusher rod guide and slide the
guide forward as far as possible.
3. Using a spanner wrench (5190125) remove the cutting valve assembly by unscrewing the lockscrew
(57K02). Replace both 0-rings (85W11) and (14K07)
and the seat (32Z01).
4. Replace the cutting valve assembly back in the torch
and tighten the lockscrew with the spanner wrench.
5. Locate the pusher rod guide on the markers made
previously, tighten the two set screws and replace the
pusher pin in the guide.
6. Slide the handle back and replace the thumb piece
on the lever. Locate the handle over the four screw
holes and replace the screws.
Cleaning the Injector:
1. Remove the mixing chamber plug (35Z60) and the
injector locking screw (35Z59) from the mixer body
(21Z74).
2. If gentle tapping of the mixer body does not cause
2
Loading...