Tweco 211i Fabricator - Manual (Page 39)

INSTALLATION/SETUP FABRICATOR 211i
Manual 0-5157 3-7 INSTALLATION/SETUP
7. Before opening the cylinder valve, turn the regulator adjusting screw counterclockwise until there is no pres-
sure on the adjusting spring and the screw turns freely.
8. Relief Valve (where provided): The relief valve is designed to protect the low pressure side of the regulator
from high pres sures. Relief valves are not intended to protect down stream equipment from high pressures.
!
WARNING
DO NOT tamper with the relief valve or remove it from the regulator.
!
WARNING
Stand to the side of the cylinder opposite the regulator when opening the cylinder valve. Keep the cylinder
valve between you and the regulator. For your safety, NEVER STAND IN FRONT OF OR BEHIND A REGULA-
TOR WHEN OPENING THE CYLINDER VALVE!
9. Slowly and carefully open the cylinder valve (Figure 3-5) until the maximum pressure shows on the high pres-
sure gauge.
Art # A-09828
Figure 3-5: Open Cylinder Valve
10. On all cylinders, except acetylene, open the valve completely to seal the valve packing. On gaugeless regula-
tors, the indicator will register the cylinder contents open.
11. On acetylene cylinders, open the valve 3/4 of a turn and no more than 1-1/2.
!
WARNING
Acetylene delivery pressure must not exceed 15 PSIG (103 kPa) or 30 PSIG (207 kPa). Acetylene can dis-
sociate (decompose with explosive violence) above these pressure limits.
CAUTION
Keep the cylinder valve wrench, if one is required, on the cylinder valve to turn OFF the cylinder quickly,
if necessary.
12. Attach the desired downstream equipment.