Sherwood SRB5100, SRB5900, SRB5700 manual C. Wet Breathing, D. Humming or Buzzing During Inhalation

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C. Wet Breathing:

C. Wet Breathing:

1.Improper clearing, or diver diving in total head-down position.

2.Diaphragm improperly installed.

3.Hole in the mouthpiece at tie area.

4.Hole in the diaphragm.

5.Damaged exhaust valve, or edges of the exhaust valve not firmly seated on the case.

6.Crack in case.

D. Humming or Buzzing During Inhalation:

1.Harmonic resonance between the springs and the mass of the piston.

Instruct the diver on proper clearing technique.

Visually check position of diaphragm.

Replace the mouthpiece.

Replace the diaphragm.

Replace exhaust valve.

Replace case.

Disassemble the first stage and flip the main spring over. Change the position of the piston in its bore. If resonance is still present, install a new piston and spring.

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Contents Assembly & Maintenance Guide REGULATORSSRB5300 SRB5900ITEM # CATALOG #DESCRIPTION TABLE OF CONTENTS Page 1.0 Introduction 2.0 Specifications3.0 O-rings Reference Chart 6.0 Helpful Hints1.0 INTRODUCTION Page 2.0 SPECIFICATIONS First Stage RegulatorB. Second Stage Regulator 2.2 SPECIFICATIONS FOR THE SRB5100 BRUT REGULATOR U.S. Pat. # 4,226,257U.S. Pat. #3,991,785 3.0 O-RINGS REFERENCE CHART 4.0 FIRST STAGE PROCEDURES 4.2 DISASSEMBLY OF FIRST STAGE4.1 TOOLS REQUIRED FOR FIRST STAGE SERVICING Photo #1 Photo #2 Photo #3 4.3 ASSEMBLY OF FIRST STAGE 4.4 TESTING OF FIRST STAGE A. Before You Begin TestingB. Dry Air Bleed Flow Test C. Intermediate Pressure Test 5.0 SECOND STAGE PROCEDURES 5.2 DISASSEMBLY OF SECOND STAGE5.1 TOOLS REQUIRED FOR SECOND STAGE SERVICING 10. Remove the O-ring 21 from the adjustable orifice 5.3 ASSEMBLY OF SECOND STAGE 70 in. lbs. 8 joules5.4 SET- UP OF SECOND STAGE For the following adjustments, remove the cover and diaphragmPhoto #4 Photo #55.5 TESTING OF SECOND STAGE A. Inhalation Effort B. Exhalation EffortC. Leak Test D. External Air Leaks 6.1 TROUBLESHOOTING REGULATORS 6.0 HELPFUL HINTSA. High Inhalation Effort at Depth B. Free FlowingC. Wet Breathing D. Humming or Buzzing During Inhalation6.2 PARTS CLEANING RECOMMENDATIONS 6.3 COMMONLY USED CLEANING SOLUTIONS6.4 HANDLING TIPS A. Pre-Dive ChecksB. Post-Dive Care 7.0 TWO YEAR WARRANTY AND MAINTENANCE INFORMATION 7.1 PROPER PROCEDURE FOR WARRANTY PAPERWORK7.2 SCHEDULED MAINTENANCE ITEM # 6204 Goodrich Road Clarence Ctr, New York ALL PRODUCTS SUBJECT TO CHANGE WITHOUT NOTICEAll other names are trademarks of their respective owners Part Number S-MAN2004