Lighting And Adjusting Torch When Using Alternate Fuel Gases; Extinguishing The Torch Flame And Securing Equipment; Shutting Down The System; Bleeding The System Of Gases - Smith Little Torch Owner's Manual

8-9. Lighting And Adjusting Torch When Using Alternate Fuel
Gases (Propane, Propylene, Natural Gas)
The following instructions are adjustment procedures for the torch when
using alternate fuel gases. This equipment is designed to operate at a set
volume of gas for each tip.
Follow the set-up instructions explained in Sections 8-2 thru 8-7 before
lighting the torch.
Using less than the required volume of gas may result in over-
heating of the tip or equipment and can lead to an internal fire
or flashback.
When lighting torch, keep the tip pointed away from people and
combustibles.
.
Do not use the size 2 tip for alternate fuel gases. The size 3 tip may
be difficult to light when using natural gas as the fuel.
1. Adjust the regulator outlet pressure to the torch by turning the regu-
lator adjusting handle clockwise until the outlet pressure gauge in-
dicates the recommended pressures for the tip being used (see
Section 11-1).
2. Slightly open the torch fuel gas valve approximately 1/4 turn and ig-
nite the gas using an approved friction spark lighter or bunsen
burner.
Do not use matches or a cigarette lighter to ignite the gas.
3. Adjust until the flame is about to leave the end of tip.
4. Slowly open the torch oxygen valve until a neutral flame is obtained.
5. Further open the torch fuel valve 1/8–1/4 turn.
6. Again open the torch oxygen valve until the flame is neutral.
7. If needed, continue this procedure until the maximum volume of fuel
and oxygen are being used and desired flame is achieved.

8-10. Extinguishing The Torch Flame And Securing Equipment

1. Turn the torch fuel gas valve to the closed position (clockwise).
2. Turn the torch oxygen valve to the closed position (clockwise).

8-11. Shutting Down The System

1. Extinguish torch flame (see Section 8-10).
2. Turn the oxygen cylinder valve to the closed position (clockwise).
3. Turn the fuel gas cylinder valve to the closed position (clockwise).

8-12. Bleeding The System Of Gases

1. Remove tip from torch body.
2. Open torch oxygen valve 1/2 turn.
3. Observe oxygen regulator. When low pressure gauge indicates ze-
ro (0), close the torch oxygen valve.
4. Turn the oxygen regulator pressure adjusting handle to the left
(counterclockwise) until no spring pressure is felt on the adjusting
handle.
5. Repeat steps 2, 3, and 4 for the fuel gas.
6. Secure equipment and store in safe area.
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