Sherwood Scuba maximus SRB5600 Assembly & Maintenance Manual page 24

C. Wet Breathing:
1. Improper clearing, or diver diving in total
head-down position.
2. Leaking past adjusting lever
3. Diaphragm improperly installed or holed.
4. Damaged or loose fitting exhaust valve
5. Crack in case 20 .
D. High Frequency Humming or Buzzing During Inhalation:
1. Harmonic resonance between the springs
and the mass of the piston in the first stage.
E. Low Frequency Fluttering During Inhalation (Above the Surface Only):
1. Harmonic resonance between the springs
and the mass of the second stage diaphragm.
Instruct the diver on proper clearing
technique.
. Install new o-ring
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surface & groove.
Check position of diaphragm visually.
Replace if holed.
Replace exhaust valve
Replace case.
Disassemble the first stage and flip the
main spring over. Change the position
of the piston
resonance is still present, install a new
piston and spring.
Try adjusting the lever tip closer or
farther from the diaphragm wear plate.
Switch diaphragm with another unit.
Explain to the customer that this is not
harmful to the regulator, and does not
happen underwater.
21
. Check sealing
24
.
26
in its bore. If
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