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Operating Instructions for the
Milwaukee MA957
CYLINDER CARE: Secure cylinders so that
they will not tip or fall.
The Milwaukee MA957 Regulator suits a Type 30 BOC fitting for a CO2 bottle or
other similar fitting measurements of 0.860in, 21.84ml, approximately ⅞in or
14BSW.
Inspect the cylinder valves for damaged threads, dirt, oil, or grease. Remove
dust and dirt with a clean cloth.
DO NOT ATTACH THE REGULATOR IF OIL OR GREASE IS
PRESENT.
Oil and grease in the presence of oxygen is
EXPLOSIVE!
Crack open the cylinder valve for an instant to blow out any foreign matter
in the throat of the cylinder.
Use Teflon tape on the threads of the cylinder before attaching the
regulator. Failure to do this can result in the loss of gas!
ADJUSTING THE CO2 LEVEL: The bubble rate,
which determines the rate that CO2 is delivered to the tank, is adjusted
using the needle valve. However you will not immediately know the amount of
CO2 dissolved in the water: bubble sizes, reactor or diffused type, tank size
and uptake (number, type, growth rate of plants) all vary. If you need to
adjust your bubble rate until you get your desired CO2 level, start at about
30 bubbles per minute and increase or decrease daily as required.
REGULATOR ATTACHMENT AND USE: Attach the
regulator to the cylinder valve placing the supplied plastic o-ring (not
shown) between the regulator and the tank. Tighten with a wrench. Omission of
this o-ring will cause loss of gas!
Unscrew the large brass ring (G) from the Bubble Counter (H) and fill the
bubble counter 1/2 full of fresh water. Be sure the needle valve (B) is
closed before filling with water. Once filled, replace the brass o-ring (G).
Before opening the cylinder valve turn the regulator adjustment knob (E)
counter clockwise until tension is no longer felt on the knob. Do not fully
remove the regulator flow adjustment knob. IF THE
CYLINDER VALVE IS OPENED WITH THE REGULATOR KNOB CLOSED, DAMAGE TO THE
REGULATOR CAN RESULT!
VERY SLOWLY and
CAREFULLY open the cylinder valve
COMPLETELY to seal the cylinder valve packing. The amount of gas
in the cylinder can now be read on the High Pressure Gauge (D).
Plug the solenoid (C) into the SMS122
controller OR OTHER SUITABLE UNIT. The solenoid uses slightly more then 6 watts and it is normal for
it to feel warm during operation.
Open the needle valve (B) by turning counter-clockwise.
Turn the adjustment knob (E) clockwise until you get a reading on the Low
Pressure Gauge (F) of approximately 10lbs on the outside set of numbers (use
the numbers on the top row). You should now see bubbles in the counter.
Unplug the Solenoid (C) from the SMS122 controller OR
OTHER SUITABLE UNIT and unscrew the
compression fitting and pass the air hose through the fitting and attach the
tubing to the nipple (A). Be sure your tubing fits tightly on the nipple and
that it is pressed all the way down. Slide the compression fitting onto the
nipple and tighten.
Plug the Solenoid (C) back into the the SMS122 controller
OR OTHER SUITABLE UNIT and
adjust the bubble count on your reactor using the needle valve (B). Fine
tuning the count can be accomplished with either the needle valve (B) and by
adjusting the regulator output pressure with adjustment knob (E) as discussed
in the previous step. The more you increase the pressure as indicated on the
low pressure gauge (F) the more difficult it will be to fine tune your bubble
count using needle valve (B). Therefore it is more desirable to keep the
pressure indicated on the low pressure gauge (F) low and adjust your bubble
count using the Needle Valve (B).
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