A700 Step-by-step maintenance procedures.
On air adjustments and
testing…
x Refer and review the SCUBAPRO A700 movie-tutorial.
x Let‟s proceed by connecting an inline adjustment tool
x Now charge the A700 with intermediate pressure air…
x Set the Diver inhalation control knob to its “lightest” setting. Note the two (ll) bars.
x Place dive switch to MIN.
x Advance the spool and engage the orifice slots.
x Rotate counter clockwise until a slight leak is present, then clockwise until the leak stops, plus 30
degrees - to stabilize the adjustment.
x Press the purge valve slightly and watch the IP gauge to determine lever height. The lever must “kiss”
the diaphragm disc… Avoid lever rattle!
x Now we are ready to check the inhalation effort using a Magnehelic® gauge and accurate IP gauge…
x To properly measure the inhalation effort, the practical option is to connect a Magnehelic® gauge to
the 2
nd
. Stage mouth piece, via specialized accessories.
x Now gently draw a sustained inhalation watching for the point where the IP gauge drops indicating
that the 1
st
. stage is now open and flowing – at that very instant…capture the reading on the
Magnehelic® gauge.
x Your target inhalation effort is 1.1” to 1.3” inches of water. We do not advise setting to an effort of
less than 1.1” as the second stage is sure to leak when in use underwater.
x Make any necessary adjustments via the micro adjust & flat blade screw driver by increasing or
decreasing the spring counter force. Re-check the adjustable orifice position to satisfaction, (no lever
rattle should be present).
x Pull back on the in line adjustment spool to disengage prior to attempting removal of same.
x It is good practice to use water to verify in water behavior. First, flood the 2
nd
. Stage to check for leaks
via bubbles. Your hearing may not be as good as you think. Second, return to the surface, drain all
water and seal the mouth piece with your thumb, as if it were in the diver‟s mouth and re-submerge.
Slowly roll forward into a “head down position” – to verify the stability of the regulator. If bubbles
commence to flow in the head down position, the unit is set to light and the spring counter force must
be increased – to achieve hydrostatic equilibrium...
x Clean screw head with house hold alcohol in preparation of installing a new decal…
x Remove the adhesive back, press and hold…
x Snug the LP hose, using the Universal tool and return the hose sleeve…
Important note: The following information is not designed to be a complete training guide for servicing the listed SCUBAPRO
regulators. All SCUBAPRO technicians are required to attend an annual service training program to insure safe handling and
servicing of SCUBAPRO products. All SCUBAPRO technicians must be employed by an authorized SCUBAPRO facility.
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