MK Products Positioner #2 - Manual (Page 3)

rails, electrical wires, or welding circuits. They can produced short circuit arcs that may lead to a serious
accident. (See 1-3C)
ICC or DOT marking must be on each cylinder. It is an assurance of safety when the cylinder is properly
handled.
Identifying gas content. Use only cylinders with name of gas marked on them; do not rely on color to identify
gas content. Notify supplier if unmarked. NEVER DEFACE or alter name, number, or other markings on
a cylinder. It is illegal and hazardous.
Empties: Keep valves closed, replace caps securely; mark MT; keep them separate from FULLS, and return
promptly.
Prohibited use. Never use a cylinder or its contents for other than its intended use, NEVER as a support
or roller.
Locate or secure cylinders so they cannot be knocked over.
Passageways and work areas. Keep cylinders clear of areas where they may be stuck.
Transporting cylinders. With a crane, use a secure support 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
allow contents to exceed 55 degrees C (130 degrees 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 cannot 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 exchanged.
3. Hose
Prohibited use. Never use hose other than that designed for the specified gas. A general hose identification
rule is: red for fuel gas, green for oxygen, and black for inert gases.
Use ferrules or clamps designed for the hose (not ordinary wire or other substitute) as a binding to connect
hoses to fittings.
No copper tubing splices. Use only standard brass fittings 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 connections. Immerse pressured hose in water; bubbles
indicate leaks
Repair leaky or worn hose by cutting area out and splicing. Do NOT use 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 agree,
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 connections, clean and smooth seats where necessary.
Tighten. If connection leaks, disassemble, clean, and retighten, using properly fitting wrench.