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OM-166 941 Page 3
Locate or secure cylinders so they cannot be knocked
over.
Passageways and work areas. Keep cylinders clear of
areas where they may be struck.
Transporting cylinders. With a crane, use a secure sup-
port such as a platform or cradle. Do NOT lift cylinders
off the ground by their valves or caps, or by chains,
slings, or magnets.
Do NOT expose cylinders to excessive heat, sparks,
slag, and flame, etc. that may cause rupture. Do not al-
low contents to exceed 130°F. Cool with water spray
where such exposure exists.
Protect cylinders particularly valves from bumps, falls,
falling objects, and weather. Replace caps securely
when moving cylinders.
Stuck valve. Do NOT use a hammer or wrench to open a
cylinder valve that can not be opened by hand. Notify
your supplier.
Mixing gases. Never try to mix any gases in a cylinder.
Never refill any cylinder.
Cylinder fittings should never be modified or ex-
changed.
3. Hose
Prohibited use. Never use hose other than that de-
signed for the specified gas. A general hose identifica-
tion rule is: red for fuel gas, green for oxygen, and black
for inert gases.
Use ferrules or clamps designed for the hose (not ordi-
nary wire or other substitute) as a binding to connect
hoses to fittings.
No copper tubing splices. Use only standard brass fit-
tings to splice hose.
Avoid long runs to prevent kinks and abuse. Suspend
hose off ground to keep it from being run over, stepped
on, or otherwise damaged.
Coil excess hose to prevent kinks and tangles.
Protect hose from damage by sharp edges, and by
sparks, slag, and open flame.
Examine hose regularly for leaks, wear, and loose con-
nections. Immerse pressured hose in water; bubbles in-
dicate leaks.
Repair leaky or worn hose by cutting area out and splic-
ing (1-2D3). Do NOT tape.
4. Proper Connections
Clean cylinder valve outlet of impurities that may clog
orifices and damage seats before connecting regulator.
Except for hydrogen, crack valve momentarily, pointing
outlet away from people and sources of ignition. Wipe
with a clean lintless cloth.
Match regulator to cylinder. Before connecting, check
that the regulator label and cylinder marking area, and
that the regulator inlet and cylinder outlet match.
NEVER CONNECT a regulator designed for a particular
gas or gases to a cylinder containing any other gas.
Tighten connections. When assembling threaded con-
nections, clean and smooth seats where necessary.
Tighten. If connection leaks, disassemble, clean, and
retighten using properly fitting wrench.
Adapters. Use a CGA adapter (available from your sup-
plier) between cylinder and regulator, if one is required.
use two wrenches to tighten adapter marked RIGHT
and LEFT HAND threads.
Regulator outlet (or hose) connections may be identified
by right hand threads for oxygen and left hand threads
(with grooved hex on nut or shank) for fuel gas.
5. Pressurizing Steps:
Drain regulator of residual gas through suitable vent be-
fore opening cylinder (or manifold valve) by turning ad-
justing screw in (clockwise). Draining prevents exces-
sive compression heat at high pressure seat by allowing
seat to open on pressurization. Leave adjusting screw
engaged slightly on single-stage regulators.
Stand to side of regulator while opening cylinder valve.
Open cylinder valve slowly so that regulator pressure in-
creases slowly. When gauge is pressurized (gauge
reaches regulator maximum) leave cylinder valve in fol-
lowing position: For oxygen, and inert gases, open fully
to seal stem against possible leak. For fuel gas, open to
less than one turn to permit quick emergency shutoff.
Use pressure charts (available from your supplier) for
safe and efficient, recommended pressure settings on
regulators.
Check for leaks on first pressurization and regularly
there-after. Brush with soap solution (capfull of Ivory
Liquid* or equivalent per gallon of water). Bubbles indi-
cate leak. Clean off soapy water after test; dried soap is
combustible.
E. User Responsibilities
Remove leaky or defective equipment from service im-
mediately for repair. See User Responsibility statement
in equipment manual.
F. Leaving Equipment Unattended
Close gas supply at source and drain gas.
G. Rope Staging-Support
Rope staging-support should not be used for welding or
cutting operation; rope may burn.
*Trademark of Proctor & Gamble.