TROUBLESHOOTING
POSSIBLE CAUSE
RECOMMENDED ACTION
Inlet filter clogged.
Replace the filter.
Air supply to 1st stage insufficient.
Verify the supply air pressure. Make sure the
customer had the air valve turned all the way on
during the dive.
1st improperly adjusted.
Refer to sections 4.5 of this manual.
CREEPING INTERMEDIATE PRESSURE:
POSSIBLE CAUSE
RECOMMENDED ACTION
Damaged or worn 1st stage seat (16).
Replace seat
Nick in sealing surface of Body Orifice (8)
Replace Body or Buff out Scratch
Worn O-ring (18) on HP valve stem.
Replace O-ring
Scratch in groove where O-ring (18) seals
Replace balance plug (21)
Seat (16) has not taken shape of Orifice yet.
Let the Regulator sit with the pressure on for a few
minutes and measure pressure again.
HIGH FREQUENCY HUMMING OR BUZZING DURING INHALATION:
POSSIBLE CAUSE
RECOMMENDED ACTION
Remove the main spring (14) flip it over and
re-install.
Replace spring or other components until resonance
stops.
Harmonic resonance between the springs
and other 1st stage components.