ESAB R-720 Serie Mode D'emploi page 4

 OXYGEN causes many metals and other materials
to burn violently.
 INERT GAS OR CARBON DIOXIDE can cause suffoca-
tion 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 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).
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 coun-
terclockwise.
2. When making the initial delivery pressure adjust-
ment, all valves downstream of the regulator must
be open or you will not get a true working-pressure
reading on the delivery-pressure gauge.
 OXYGEN causes many metals and other materials
to burn violently.
 INERT GAS OR CARBON DIOXIDE can cause suffoca-
tion 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 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).
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 coun-
terclockwise.
2. When making the initial delivery pressure adjust-
ment, 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 suit-
able for oxygen service, such as P/N 998771 (8
oz. 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 pres-
sure 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 regula-
tor. 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 counterclock-
wise 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 distributor or to ESAB Remanufacturing
Center, 411 S. Ebenezer Road, Florence, SC 29501.
NOTE: Safety release device equipped on oxygen
and inert gas regulators is designed for
regulator protection; not for hose or equip-
ment downstream. If gas escapes through
the vent holes of the cap, immediately close
cylinder valve and then remove regulator
from service for repair.
IMPORTANT: Before starting operations, test all con-
nections with a Leak Test Solution that is suit-
able for oxygen service, such as P/N 998771 (8
oz. 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 pres-
sure 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 regula-
tor. 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 counterclock-
wise 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 distributor or to ESAB Remanufacturing
Center, 411 S. Ebenezer Road, Florence, SC 29501.
NOTE: Safety release device equipped on oxygen
and inert gas regulators is designed for
regulator protection; not for hose or equip-
ment downstream. If gas escapes through
the vent holes of the cap, immediately close
cylinder valve and then remove regulator
from service for repair.