Milwaukee Instruments MA957 User Manual

The MA957 Regulator set up procedure & gas flow adjustment is as follows:

If

you have a pH controller unplug the solenoid from the controller and Plug your
solenoid into a wall socket or power strip ( note the distinctive “click”) . Do not
have it plugged into any type of controller or timer to do the following adjustmen

t.

T

urn your CO2 bottle off. Go to the regulator and turn the main knob

counterclockwise till you feel no pressure. Next, go to the needle valve

underneath

the bubble counter, and turn it counterclockwise ( &) all the way out until it stops.

N

ow go back to your CO2 tank and turn the tank to full open. At this point, even
with the tank being at the full open position you should have no bubbles coming
through the bubble counter.

V

ery slowly, turn the big knob on your regulator in until you start seeing some
bubbles come out of your regulator bubble counter.

to Do not pay any attention

the right side gauge. All you are interested in is the bubble counter. You must

proceed very slowly when trying to adjust the CO2 regulator. Go slow, slow, slo

w;

take your time, we want to slowly work the bubble count up.

T

urn the knob one eighth to one quarter turn clockwise and wait about 30 to 45
seconds or longer before making any further adjustments. Continue with this
process until you get a bubble count that is equal to what you're looking for. If
necessary, use the needle valve at this point to fine adjust the bubble count but u
the needle valve as a last resort and as a “

micro” adjustment only. This will keep ga

back pressure to a minimum in the regulator main chamber and solenoid.
Please Note: The right side gauge is not relevant to adjusting your gas flow. The

bubble counter is your only true and accurate gauge of gas flow. Therefore, any
reference to the right side gauge serves no purpose and is not necessary in the pro
setup of the regulator.

A

t this point your gas flow is calibrated. If you're using a pH controller plug your

solenoid back into the pH controller box.

Milwaukee Instruments

2950 Business Park rth Carolina 27804

Toll Free 877.283.7837 Fax [phone]

sales@milwaukeetesters

Drive . Rocky Mount . No

. www.milwaukeetesters.com

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