Tweco 201 ts Thermal Arc - Manual (Page 29)

INSTALLATION THERMAL ARC 161 STL, 201 TS
Manual 0-5203 3-11 Installation
b) Low pressure gauges must be UL recognized
for the class of regulator they are being used on
according to UL252A.
!
WARNING
DO NOT use a regulator that delivers
pressure exceeding the pressure rating of the
downstream equipment unless pro visions
are made to prevent over-pressurization (i.e.
system relief valve). Make sure the pressure
rating of the down stream equipment is
compatible with the maximum delivery
pressure of the regulator.
5. Be sure that the regulator has the correct pressure
rating and gas service for the cylinder used.
6. Carefully inspect the regulator for damaged threads,
dirt, dust, grease, oil, or other flammable substances.
Remove dust and dirt with a clean cloth. Be sure the
inlet swivel filter is clean and in place. Attach the
regulator (Figure 3-6) to the cylinder valve. Tighten
securely with a wrench.
!
WARNING
DO NOT attach or use the regulator if oil,
grease, flamma ble substances or damage is
present! Have a qualified repair technician
clean the regulator or repair any damage.
Art # A-09845
Figure 3-6: Regulator to Cylinder Valve
7. Before opening the cylinder valve, turn the regulator
adjusting screw counterclockwise until there is no
pressure 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 REGULATOR WHEN
OPENING THE CYLINDER VALVE!
9. Slowly and carefully open the cylinder valve (Figure
3-7) until the maximum pressure shows on the high
pressure gauge.
Art # A-09828
Figure 3-7: Open Cylinder Valve