MONTHLY INSPECTION AND MAINTENANCE CHECKLIST (continued)
STEPS
PROCEDURE
INITIALS
GX300 SECOND STAGE
REGULATOR
• Remove the GX300 second stage regulator from
helmet.
• Remove the regulator valve cover and visually
inspect the exhaust valve diaphragm assembly
for damage or deterioration. Clean components
as required. Replace diaphragms if damaged or
deteriorated.
• Remove the valve spindle assembly from the
regulator case.
• Visually inspect this assembly, then clean it as
required.
• Re-set the spindle adjuster to the correct setting
(refer to Apeks GX300 Technical Manual).
• When dry, re-install valve spindle assembly into
the regulator case.
• Adjust the lever as required and check regula-
tor adjustment (refer to Apeks GX300 Technical
Manual).
• Complete the reassembly of the regulator and fit
the regulator back into the helmet.
NOTE:
If regulator performance is suspect,
the valve spindle assembly may need to
be disassembled and serviced by a trained
technician.
NOTE:
Refer to:
Apeks
GX300 REGULATOR
FOR THE AQUA LUNG G3000SS DIVING HEL-
MET - MAINTENANCE MANUAL for guidance.
FREE FLOW VALVE
KNOB
• Remove the handwheel knob and check the
condition of the guide hole. It should be square
and firm. If any deterioration or excess play is
present, replace knob.
WARNING: Knob slippage on the stem
may cause dangerous conditions to the
diver, including death.
NOTE:
Refer to the free flow / water dump valve
section of the Operations and Maintenance
Manual for guidance.
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