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Guidelines for Delta 3 adjustments (knob on side):
NOTE: Rotation of the Delta 3 adjustment knob does not rotate the poppet
seat against the sealing orifice.
Normal Pre Dive Setting -
To set the Delta 3 to an average breathing resistance, 1 to 1
1
/
2
column inches of wa-
ter (common factory setting), attach the first stage to an appropriate cylinder and open
the valve to pressurize the regulator.
Rotate the adjustment knob 'counter clockwise' until leakage is heard, then rotate the
knob clockwise
1
/
2
to 1 turn.
High Flow Setting -
When diving deep, facing a long swim up current, or during other periods of heavy
exertion, it is desirable to make the Delta breathe as easy as possible. This setting
should be used only when necessary to avoid loss of air that may occur due to the
Delta's extra sensitivity at this setting.
To adjust the Delta for minimum breathing resistance, rotate the adjustment knob
'counter clockwise' until a slight flow of air begins, then rotate the knob 'clockwise'
until the flow stops.
Frequently monitor your air supply when the Delta is adjusted for maximum flow.
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