3
OPERATING INSTRUCTIONS
CONNECTING
1. Attach regulators to the oxygen and fuel gas cyl-
inders. Follow all instructions supplied with your
regulators.
2. Attach oxygen and fuel gas hoses (see Note 1 in
Operating Data section on pg. 4 for recommended
hose sizes) to the regulators and to the torch handle
after making sure all metal seating surfaces are
clean. Tighten all connection nuts with a wrench.
3.
Using Welding or Heating Head:
Remove weld-
ing head connection nut from torch handle. Insert
welding head into handle using slight back and forth
twisting motion as you push. Slip connection nut
over the head and hand-tighten to handle.
Using Cutting Attachment:
Set the welding head
connection nut aside and insert the cutting attach-
ment to the torch handle in the same manner as the
welding head. Remove nozzle nut and insert cutting
nozzle into the cutting attachment head. Slip nut
over the nozzle and tighten with a wrench.
4. Check all valve packing nuts for tightness.
Flashbacks can cause serious burns.
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
Fuel Gas:
With oxygen valve closed, open the fuel
gas valve on the torch handle about one turn. Turn in
the pressure adjusting screw on the fuel gas regulator
until its delivery-pressure gauge indicates the desired
pressure (refer to operating charts on page 5). Then
immediately close the torch fuel gas valve.
Oxygen, Using Welding or Heating Head
: Open the
torch oxygen valve at least 1-1/2 turns. Adjust oxygen
pressure at the regulator to the desired pressure (refer
to charts) and then close the torch oxygen valve.
Oxygen, Using Cutting Attachment:
Open the torch
oxygen valve WIDE and leave the preheat oxygen valve
on the cutting attachment closed. Depress the cutting
oxygen valve lever on the cutting attachment. Adjust the
oxygen pressure at the regulator to the desired pressure
(refer to chart). Shut off the oxygen flow by releasing the
cutting oxygen valve lever only.
TESTING FOR LEAKS
Every welding and 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 both valves on the torch handle are
closed. Then turn in the regulator pressure-adjusting
screws clockwise until the oxygen delivery-pressure
gauge registers 50 psi, the fuel gas delivery-pressure
gauge registers 10 psi. Using Leak Test Solution suit-
able for oxygen service, such as P/N 998771 (8 oz.
container), check for leaks at the cylinder valves, the
cylinder-to-regulator connections, the regulator-to-hose
connections, and the hose-to-torch connections. If bub-
bling at any point indicates leakage, tighten the connec-
tion. If this does not stop the leakage, close the appro-
priate cylinder valve, open the 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 connections, 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.
LIGHTING & FLAME ADJUSTMENT
CAUTION: Use friction lighter for lighting torch. Do NOT
use a match. Use of a match can seriously
burn your hand.
Welding or Heating Head
1. Open fuel gas valve about 1/2 turn and light the gas
at the tip.
2. Slowly close the fuel gas valve until the yellow flame
just starts to throw off smoke.
3. Open oxygen valve slowly until you have a neutral
flame.
4. If harsher or softer flame is desired, readjust the two
valves.
NOTE: When operating with a very soft flame, the weld-
ing head will tend to heat up and transfer some
of this heat back to the torch handle. This may
create some discomfort to the operator.
Cutting Attachment
1. Open the acetylene valve on the torch handle about
1/2 turn, and light the gas at the nozzle.
2. Slowly close the acetylene throttle valve until the
yellow flame just starts to throw off black smoke.
3. Slowly open preheat oxygen valve on cutting attach-
ment until neutral flames are obtained.
4. Finally, open the cutting oxygen valve by depress-
ing lever and readjust the neutral flames by turning
preheat oxygen valve.
