Aqua Lung SEA MK Troubleshooting Guide download pdf (Page 23)

SYMPTOM POSSIBLE CAUSE TREATMENT

System will not remain depressurized

after valve is shut and second stage is

purged.

1. The valve seat (20) is worn or damaged. 1. Replace valve seat

2. The valve seating surface is damaged. 2. Replace body (36)

High or Unstable IP “Creep”

1. The valve seat (20) is worn or damaged. 1. Replace valve seat

2. The valve seating surface is damaged. 2. Replace body (36)

3. The main spring (35) is defective 3. Replace main spring

4. The HP seat (34) is worn or damaged. 4. Replace HP seat

5. The HP crown sealing surface is

damaged.

5. Replace body (36)

Low IP

1. Main spring (35) is weakened or

damaged.

1. Replace spring

External Air Leak

1.The piston head o-ring (31) or shaft o-ring

(33) is worn or damaged.

1. Replace o-ring (s)

2. The o-ring grooves on the piston (32)

are damaged.

2. Replace piston and o-rings

3. The piston head o-ring sealing surface in

the piston cap (30) is damaged.

3. Replace piston cap

4. The piston shaft o-ring sealing surface in

the body is damaged.

4.Replace body

Table 1: Troubleshooting Guide

First Stage/Valve Assembly

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 33 34

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Aqua Lung SEA MK Troubleshooting Guide Page 23