OPERATING INSTRUCTIONS for
F-15-304
March, 1996
R-27 SERIES "B"
CYLINDER REGULATORS
Rated Max.
Regulator Gas Connection, CGA No. Delivery Pressure Gauge, psig
Model P/N Service Inlet Outletw Pressure, psig Cylinder Delivery
R-27-75-540A 17526 Oxygen 540 022 75 4000 100
R-27-15-510 998399 Acetylene 510 023 15 400 15
R-27-15-300 603381 Acetylene 300 023 15 400 15
R-27-75-580 17166 Inert Gasn 580 032 75 4000 100
R-27-75-320 17855 Carbon Dioxide 320 032 75 4000 100
R-27-75-590 18457 Air 590 033 75 4000 100
w CGA-022 (formerly "B" oxygen)—9/16-in.—18 RH male connection.
CGA-023 (formerly "B" fuel gas)—9/16-in.—18LH male connection.
CGA-032 (formerly "B: inert gas)—5/8-in.—18 RH female connection.
ACCESSORY:
CO2 Heater, P/N 950578 - Connects between CO2 cyl-
inder and regulator permitting CO2 flow up to 180 cfh
without "freezing up" at regulator. A standard electrical extension cord of appropriate length with 3-prong
CGA-033 (formerly "B" air-water)—5/8-in.—female connection.
nInert gas includes nitrogen, argon, and helium.
NOTE: Hoses used with these regulators should have
a working pressure at least equivalent to the
maximum gauge reading, with a safety factor
of at least 3 to 1.
connections will be required.
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 our booklet, "Precautions and Safe Practices for Gas 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 regulators covered by these Instructions are listed by Underwriter's Laboratories only when using parts manufactured by ESAB
Welding & 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 parts voids the manufacturer's warranty.
IMPORTANT: For packing purposes, the pressure-adjusting screw of the regulator may be
either turned in or packed separately. If installed
in regulator, back out screw (turn counterclockwise) until it turns freely. If packed separately,
install the screw in the regulator cap and turn it
in (clockwise) only one or two turns.
l Keep regulator clean and in good repair. Do NOT
oil or grease regulator. Grease and oil on regulator or valve parts can cause regulator fires.
l Always work in a well-ventilated area.
l Prevent leaks and keep away from heat, flame,
and sparks.
l Do not change CGA inlet connection from number
stamped on regulator body.
Safety Precautions
l Follow Operating Instructions on this sheet.
l This regulator must be installed, operated, and
n OXYGEN causes many metals and other materials
to burn violently.
n INERT GAS OR CARBON DIOXIDE can cause suf-
focation in confined spaces.
n FUEL GAS can explode in air or oxygen.
maintained only by trained servicemen.
l For complete safety information on welding equip-
ment, read Form 2035 (oxy-fuel gas) and 52-529
(arc welding). For safety information on gases,
see your supplier.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
INSTALLATION AND OPERATION
TO CONNECT:
1. Open the cylinder or station valve slightly, for an
instant. (This is termed "cracking the valve"). This
will blow out dust or dirt that many have collected
in the valve outlet. Be sure to keep your face away
from the valve outlet to protect your eyes from dust
or dirt.
Never crack a fuel gas valve near sparks, flames or
any other possible source of ignition.
2. Make sure the regulator pressure-adjusting screw
is released by turning it counterclockwise until it
turns freely.
3. Attach the regulator to the valve and tighten the
connection nut with a wrench.
4. Open the cylinder valve slowly. (Open acetylene
cylinder valves no more than 1-1/2 turns).
TO RELEASE PRESSURE:
If operations are to be stopped for a half-hour or more,
you should release all pressures from regulator. To do
this proceed as follows:
1. Close the cylinder valve.
2. Open all valves downstream of the regulator.
3. Wait until pressure has dropped to zero, then turn
the pressure-adjusting screw counterclockwise
until it turns freely.
NOTE: If a regulator is to be out of use for a few days
or more, turn in the pressure-adjusting screw
enough to move the valve stem off its seat.
When the regulator is returned to use, be sure
to back off the pressure-adjusting screw until it
turns freely before pressure is admitted to the
regulator.
MAINTENANCE
Never stand in front of or behind the regulator when
opening the valve. Always stand to one side.
5. To increase delivery pressure, turn pressure adjusting screw clockwise. To decrease delivery pressure, turn the pressure-adjusting screw counterclockwise.
TO ADJUST PRESSURE:
1. To increase delivery pressure, turn the pressure
adjusting screw clockwise. To decrease delivery
pressure, turn the pressure-adjusting screw counterclockwise.
2. When making the initial delivery pressure adjustment, all valves downstream of the regulator must
be open or you will not get a true working-pressure reading on the delivery-pressure gauge.
IMPORTANT: Before starting operations, test all con-
nections with a Leak Test Solution that
is suitable for oxygen service, such as
P/N 998771 (8oz. container). Correct
any leaks before starting work. Testing
should be performed after torch or other
gas-using device has been properly connected and with maximum delivery pressure in the delivery line.
INLET FILTER:
Each regulator is equipped with a porous metal inlet
filter, P/N 71Z33, pressed into the regulator inlet nipple.
No regulator should be connected to a cylinder or station valve unless it contains this filter. You can replace
the filter if you have reason to do so. To remove a
filter, insert a No. 1 "EZY-OUT" or a No. 6 wood screw
(about 2-in. long into the filter and pull it out. Press the
new filter into the nipple with a 1/4-in. round metal rod.
REPAIR SERVICE:
Regulators in need of repair should be returned to your
distributor or to ESAB Remanufacturing Center, 411
S. Ebenezer Road, Florence, SC 29501.
If you have your own properly-equipped and staffed
repair facility, repair parts information for this regulator
is available on request to your distributor. Request
Form 15-300, which covers the regulators listed on this
sheet.
NOTE: Safety release device equipped on oxygen and
inert gas regulators is designed for regulator
protection; not for hose or equipment downstream. If gas escapes through the vent holes
of the cap, immediately close cylinder valve and
then remove regulator from service for repair.
F-15-304 3/96 3M Printed in U.S.A.
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