ANNUAL FUNCTION TEST
Vacuum leak test
No leaks allowable upon inhalation when inlet blocked (air off)
Should turn freely, increase effort approximately 1" at full adjustment
Air leak test
No air leaks allowable when pressurized, first or second stage.
Check for free movement, should return when retracted manually and released
Check for excessive dirt, corrosion
Check for signs of damage, tightness of all hoses, plugs, and threaded connections.
TROUBLESHOOTING GUIDE (2ND STAGE)
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)
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