ET 220I AC/DC
INSTALLATION, OPERATION AND SETUP
Manual 0-5346
3-30
3.18 Shielding Gas Regulator/ Flowmeter Operating Instructions
!
WARNING
This equipment is designed for use with welding grade (Inert) shielding gases only.
Shielding Gas Regulator/ Flowmeter Safety
This regulator/ flowmeter is designed to reduce and control high pressure gas from a cylinder or pipeline to the working pressure
required for the equipment using it.
If the equipment is improperly used, hazardous conditions are created that may cause accidents. It is the users responsibility to prevent
such conditions. Before handing or using the equipment, understand and comply at all times with the safe practices prescribed in this
instruction.
SPECIFIC PROCEDURES for the use of regulators/ flowmeters are listed below.
1. NEVER subject the regulator/ flowmeter to inlet pressure greater than its rated inlet pressure.
2. NEVER pressurize a regulator/ flowmeter that has loose or damaged parts or is in a questionable condition. NEVER loosen a
connection or attempt to remove any part of a regulator/ flowmeter until the gas pressure has been relieved. Under pressure,
gas can dangerously propel a loose part.
3. DO NOT remove the regulator/ flowmeter from a cylinder without first closing the cylinder valve and releasing gas in the regu-
lator/ flowmeter high and low pressure chambers.
4. DO NOT use the regulator/ flowmeter as a control valve. When downstream equipment is not in use for extended periods of
time, shut off the gas at the cylinder valve and release the gas from the equipment.
5. OPEN the cylinder valve SLOWLY. Close after use.
User Responsibilities
This equipment will perform safely and reliable only when installed, operated and maintained, and repaired in accordance with the
instructions provided. Equipment must be checked periodically and repaired, replaced, or reset as necessary for continued safe and re-
liable performance. Defective equipment should not be used. Parts that are broken, missing, obviously worn, distorted, or contaminated
should be replaced immediately.
The user of this equipment will generally have the sole responsibility for any malfunction, which results from improper use, faulty main-
tenance, or by repair by anyone other than an accredited repairer.
!
CAUTION
Match regulator/ flowmeter to cylinder. NEVER CONNECT a regulator/ flowmeter designed for a particular
gas or gases to a cylinder containing any other gas.
FLOW GAUGE (DELIVERY)
HIGH PRESSURE
GAUGE (SUPPLY)
INLET
CONNECTION
OUTLET
CONNECTION
PRESSURE
ADJUSTING
SCREW
Art # A-12126
Figure 3-20: Fit Regulator/ Flowmeter to Cylinder
NOTE!
The regulator/ flowmeter used with argon based and carbon dioxide shielding gases are different. The
regulator/ flowmeter supplied is for argon based shielding gases. If carbon dioxide is to be used a suitable
carbon dioxide regulator/ flowmeter will need to be fitted.
