Concoa 5237 Series Manuale di istruzioni per l'installazione e il funzionamento - Pagina 7
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OPERATION
3.1 PREPARING FOR OPERATION
With regulator connected to cylinder or pipeline downstream equipment
in stalled and valves closed, and the ajdusting screw released, prepare for
op er a tion as follows:
a. Observe precautions in SAFETY Section.
b. Before pressurizing an oxygen regulator, make sure it has been
drained of residual gas.
c. Open the cylinder or upstream valve slowly to avoid a sudden
pres sure surge that may damage internal regulator parts.
Gas will fl ow from outlet of fi xed-pressure regulator when valve is opened.
Inlet gauge, if any, will show supply pressure. Stand to one side to avoid
injury in case of regulator failure.
d. Slowly turn adjusting screw clockwise until the outlet gauge
indicates the desired pressure.
e. To reduce pressure, allow gas to discharge from regulator towards a
safe area, and turn adjusting screw counterclockwise, until desired
pressure is indicated on the gauge. Stop gas discharge.
f.
To prevent explosive gas mixtures, in hose or in downstream
equip ment attached to regulator outlet, purge gas line by opening
equip ment discharge valves and closing them after purging is
completed. (Adequate purging time depends on length and size of
hose.) If more than one regulator is used, close one valve before
opening next one to avoid unsafe or unwanted mixture of gases.
Do not purge oxidizing or fl ammable gases in the presence of
fl ame, lit cig a rettes, or other sources of ignition, or towards person.
g. Test connections with a leak detection solution (See SAFETY
Sec tion; item O). If no bubbles appear, system is ready for use.
3.2 SHUTTING DOWN
Close cylinder valve whenever the regulator is not in use. To shut down
for extended periods (more than 30 minutes):
a. Close cylinder or upstream valve.
b. Open downstream valve to drain the line towards a safe area.
c. After gas is drained completely, release adjusting screw and close
downsstream valve.
CAUTION
CAUTION
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