ESAB R-72 Serie Mode D'emploi page 2

 OXYGEN causes many metals and other materials to burn
violently.
 INERT GAS OR CARBON DIOXIDE can cause suffocation
in confined spaces.
 FUEL GAS can explode in air or oxygen.
• 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.
• Always work in a well-ventilated area.
• Prevent leaks and keep away from heat, flame, and
sparks.
• Do not change CGA inlet connection from number
stamped on regulator body.
• Follow Operating Instructions on this sheet.
• This regulator must be installed, operated, and maintained
only by trained servicemen.
• For complete safety information on welding equipment,
read form 2035 (oxy-fuel gas) and 52-529 (arc welding).
For safety information on gases, see 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 may 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 spark, flames or any other
possible source of ignition.
2. Make sure the regulator pressure-adjusting screw is re-
leased 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).
Never stand in front of or behind the regulator when opening
the valve. Always stand to one side.
5. Attach the hose to the regulator outlet and to the equipment
with which it is to be used. Tighten the connecting nuts with
a wrench .
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.
F15-156 06 / 2006 Printed in U.S.A.
IMPORTANT: Before starting operations, test all connections
with a Leak Test Solution that is suitable for oxygen
service, such as P/N 998771 (8 oz. container). Cor-
rect 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.
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
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 distribu-
tor or to ESAB Remanufacturing Center, Florence, SC.
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 safety
release device, immediately close cylinder valve and then
remove regulator from service for repair.