Regulators repair and maintenance
January 2009
Rev. ELL.BAL/B Ed. C /12
64
Ellipse Balanced second stage setting: valve nozzle setting (page 66)
•
Screw the second stage to the setting gauge (HZ 710011) connected with a middle
pressure hose to a correctly set MC9 first stage (10 bars - 200 bars tank) ;
•
Unscrew the second stage knob fully
;
•
Connect the regulator (including first and second stages) with a 200 bars
pressurized tank or with an equally pressurized workbench, then open the air tap
gently, while pressing the second stage air outlet button
•
If the regulator supplies air slightly, push and turn clockwise (+) the setting gauge
ring (HZ 710011) until the air stops flowing; in this way, the valve cutting edge
should hardly touch the closing pad
making it work correctly.
•
Now turn the nozzle a little more than one half turn;
•
After checking the correct set of the valve nozzle, the gauge will read the correct
set of the first stage (10 bars);
•
NOTE
: take care not to turn the valve nozzle too tight, unless the closing pad might
bend too much and increase the inhalation effort, due to the exceeding
compression of the valve spring.
2
nd
stage Ellipse Balanced:
setting