Atomic Aquatics Safe Second Inflator User Manual download pdf (Page 3)

ANNUAL FUNCTION TEST

1. Breathing effort Regulators: 1.1"-1.4" SS1: 1.2"-1.8"

2. Vacuum leak test No leaks allowable upon inhalation when inlet blocked (air off)

3. Adjustment knob Should turn freely, increase effort approximately 1" at full adjustment

4. Air leak test No air leaks allowable when pressurized, first or second stage.

5. AFC Check for free movement, should return when retracted manually and released

6. Intermediate pressure 125-145 psi

7. Filter Check for excessive dirt, corrosion

8. General Inspection Check for signs of damage, tightness of all hoses, plugs, and threaded connections.

TROUBLESHOOTING GUIDE (2ND STAGE)

Symptom Suggested Service

1. Leaks air First stage pressure too high, check and reset to 125-145 psi

Readjust lever and poppet spring tension to 1.1-1.4"

Clean sand/debris from demand valve

Replace poppet seat

2. Water leakage Check mouthpiece/diaphragm/exhaust valve for tears

Check tightness/fit of diaphragm retainer

Check case o-rings for dirt, cuts

3. Hard breathing Readjust lever and poppet spring tension

Lubricate poppet o-ring

4. AFC plunger inoperable Check/clean sand or debris in plunger

Check for leaks at AFC cover/replace diaphragm if torn

5. Adjustment knob hard to turn Lubricate knob stem o-ring

6. Uncontrolled free-flow Check mouthpiece type. Non-factory mouthpieces may cause this.

Cracking effort set too low.

AFC Plunger stuck in max. depth position.

TROUBLESHOOTING GUIDE (1ST STAGE)

Symptom Suggested Service

1. High or low I.P. Lubricate piston seals and shim as needed

2. Intermediate pressure creep Replace seat, check piston sharp edge for damage

3. Air leaks out of ambient ports Dirty or damaged HP piston seal or o-ring. Remove, clean body

and seal, reassemble.

ASSEMBLY/ADJUSTMENT NOTES (2ND STAGE)

REFER TO SCHEMATIC

1. Front cover and diaphragm-removal/replacement (T1x, T1, B1, B2, Z1)

• Unscrew the cover ring surrounding the front cover.

• Unscrew the diaphragm retaining ring with the front cover, or the 2nd stage rim clamp tool.

• Lift out the thrust washer and diaphragm.

ATOMIC AQUATICS FIRST AND SECOND STAGE REGULATORS MAINTENANCE PROCEDURES • 9/2003 3

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Atomic Aquatics Safe Second Inflator User Manual Page 3