Apeks DST - Troubleshooting Guide

SYMPTOM POSSIBLE CAUSE TREATMENT
High Pressure Creep
(also causes second-stage leaks)
1. HP valve (11) worn or damaged. 1. Replace HP valve.
2. HP valve seat worn or damaged. 2. Replace body (5).
3. Turret bolt (15) internal wall dam-
aged.
3. Replace turret bolt.
4. HP o-ring (13) damaged. 4. Replace o-ring.
5. HP o-ring (17) damaged. 5. Replace o-ring.
External Air Leakage
or
Hydrostatic Diaphragm dis-
tended or burst
1. Blanking plug o-rings worn,
damaged or missing. (10,13,20).
1. Replace o-rings.
2. Diaphragm (3) worn or damaged. 2. Replace diaphragm.
3. Hydrostatic diaphragm worn or dam-
aged.
3. Replace hydrostatic diaphragm (25).
4. Diaphragm seating surface dam-
aged.
4. Replace body (5).
5. Diaphragm clamp (21) loose. 1. Tighten diaphragm clamp.
6. Connector o-ring (10) worn or dam-
aged.
2. Replace o-ring.
7. Turret bolt o-ring (16) worn or dam-
aged.
3. Replace o-ring.
Restricted Air Flow
or
High Inhalation Resistance
Through Entire System
1. Cylinder valve not completely open.
1. Open valve and check ll pres-
sure.
2. Cylinder valve needs service. 2. Switch to a different cylinder.
3. Filter (36) is clogged. 3. Replace lter.
4. Very low medium pressure.
4. Adjust MP to between 130-145
psi (9-10 bar).
TABLE 1: FIRST STAGE TROUBLESHOOTING GUIDE
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