Tweco 2RT Transmig - Manual (Page 34)

TRANSMIG 2RT INSTALLATION/SETUP
INSTALLATION/SETUP 3-18 Manual 0-5196
NOTE
All valves downstream of the regulator must be opened to obtain a true flow rate reading on the outlet
gauge. (Welding power source must be triggered) Close the valves after the pressure has been set.
Installation
1. Remove cylinder valve plastic dust seal. Clean the cylinder valve outlet of impurities that may clog orifices and
damage seats before connecting the regulator.
Crack the valve (open then close) momentarily, pointing the outlet away from people and sources of ignition.
Wipe with a clean lint free cloth.
2. 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.
3. Connect the regulator inlet connection to cylinder or pipeline and tighten it firmly but not excessively, with a
suitable spanner.
4. Attach the gas line from the back of the 2RT to the regulator output.
Art # A-10401
Ensure that the gas
cylinder is secured to
a building pillar, wall
bracket or otherwise
securely fixed in an
upright position.
Figure 3-18: Attach gas line to proper inlet
5. To protect sensitive down-stream equipment a separate safety device may be necessary if the regulator is not
fitted with a pressure relief device.
Operation
With the regulator connected to cylinder or pipeline, and the adjustment screw/knob fully disengaged, pressurize as
follows:
1. Stand to one side of regulator and slowly open the cylinder valve. If opened quickly, a sudden pressure surge
may damage internal regulator parts.
2. With valves on downstream equipment closed, adjust regulator to approximate working pressure. It is recom-
mended that testing for leaks at the regulator connection points be carried out using a suitable leak detection
solution or soapy water.
3. Purge air or other unwanted welding grade shielding gas from equipment connected to the regulator by indi-
vidually opening then closing the equipment control valves. Complete purging may take up to ten seconds or
more, depending upon the length and size of the hose being purged.