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Summary of Contents for Apeks ATX Second Stage
- Page 1 Authorized Technician TECHNICAL MAINTENANCE MANUAL ATX SECOND STAGE...
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Page 2: Table Of Contents
Contents COPYRIGHT NOTICE...............................3 INTRODUCTION ...............................3 WARNINGS, CAUTIONS, & NOTES.........................3 SCHEDULED SERVICE............................3 GENERAL GUIDELINES ............................3 GENERAL CONVENTIONS............................4 DISASSEMBLY PROCEDURES..........................4 REASSEMBLY PROCEDURES..........................7 FINAL TESTING..............................10 Second Stage Opening Effort Test..............................10 Second Stage Air Flow Test................................10 Second Stage Purge Flow Test ................................. 10 External Leak Test .................................... -
Page 3: Copyright Notice
This manual provides factory prescribed procedures for the cor- A visual inspection of the mouthpiece looking for tears or rect service and repair of the Apeks ATX second-stage regula- holes. tor. It is not intended to be used as an instructional manual for untrained personnel. -
Page 4: General Conventions
Before performing any disassembly, refer to the exploded parts drawing, which references all mandatory Using the Apeks front cover tool (see note on page 13 replacement parts. These parts should be replaced with regarding the modification of the front cover tool), unscrew new, and must not be reused under any circumstances the case cover (4). - Page 5 Apeks ATX Second Stage Service Manual Using an ¹¹₁₆” wrench, re- Unscrew the adjustment move the heat exchanger knob (18) and completely (11). remove it from the valve body. Turn the adjustment knob counterclockwise until it stops. Press the lever (28) against the valve body (25). While Remove the o-ring (19) from the adjustment knob.
- Page 6 Using a fingernail, remove the LP seat (24) and small o-ring Fold back the edges of (22) from the shuttle valve. the exhaust valve (30) and inspect underneath. The seating surface should be clean and free of damage. Inspect the exhaust valve.
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Page 7: Reassembly Procedures
Apeks ATX Second Stage Service Manual REASSEMBLY PROCEDURES Install a new, lubricated o-ring (22) onto the stem of the shuttle valve (23). Press a new low pressure seat (24) into If the exhaust valve (30) was removed, thread the tail the front of the shuttle valve. - Page 8 Install a new, lubricated o-ring (19) onto the adjustment Install a new, lubricated o-ring (13) onto the venturi lever knob. Install a new, lubricated o-rings (16 & 17) onto the (14). Point the venturi lever upward and insert it into the spring adjuster (15).
- Page 9 Apeks ATX Second Stage Service Manual Fit a new, lubricated o-ring (26) onto the adjustable crown Adjust the lever height (27). Press the adjustable crown, threaded end first, into the NOTE : The inline adjustment tool can be use with crowns valve body.
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Page 10: Final Testing
FINAL TESTING Screw the case cover onto the case. Using the cover tool (p/n AT31) tighten the cover until it Second Stage Opening Effort Test stops. Confirm that the Connect the first stage regulator to a calibrated test bench purge button is properly and pressurize the system to 3000 (±100) psi. - Page 11 Apeks ATX Second Stage Service Manual Table 1 - Troubleshooting Guide SYMPTOM POSSIBLE CAUSE TREATMENT 1. High first-stage intermediate pres- 1. Refer to first-stage Troubleshoot- sure. (should be 135±5 psi) ing Guide. 2. LP seat (24) damaged or worn. 2. Replace LP seat.
- Page 12 Table 2 - Recommended Tool List PART NO. DESCRIPTION APPLICATION 111610 I.P. test gauge Intermediate pressure testing 944022 O-ring tool, set O-ring removal and installation AT31 Front Cover Tool* Front cover removal and installation 109436 Seat extract/install tool Crown removal and installation 100190 Inline Adjustment Tool 2nd-stage adjustment...
- Page 13 Apeks ATX Second Stage Service Manual Table 3 - Recommended Lubricants & Cleaners LUBRICANT / CLEANER APPLICATION SOURCE Christo-Lube MCG-111 All O-rings seals Aqua Lung, PN 820466, or ® Lubrication Technologies 310 Morton Street Jackson, OH 45640 (800) 477-8704 CAUTION: Silicone rubber requires no lubrication or preservative treatment.
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Page 14: Procedure A - Cleaning And Lubrication
Procedure A Cleaning & Lubrication The ATX Regulator and Nitrox When it comes to issues of nitrox safety and compatibility, the concerns lie primarily with the first stage as it is subjected to high inlet pressures. High inlet pressures lead to adiabatic compression or heating of the gas. The ATX first stage, when properly cleaned and assembled, is authorized for use with enriched air nitrox (EAN) that does not exceed 40% (EAN 40). - Page 15 Apeks ATX Second Stage Service Manual Table 4 - Torque Specifications PART NUMBER DESCRIPTION / KEY NUMBER TORQUE AP2031 Heat Exchanger / 11 45±2 inch-lbs APF124563 Hose 40±2 inch-lbs Table 5 - Test Bench Specifications TEST CONDITION ACCEPTABLE RANGE Leak Test Inlet 2,500-3,000 (±100) psig...
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Page 16: Exploded Parts Diagram
Exploded Parts Diagram 27 26 21 20 AP2039 Venturi Lever, ATX50 AP0219/AA Universal 2nd-Stage Repair Kit AP2039/Y Venturi Lever, Yellow, ATX50 Octopus AP6578 Adjuster Spring AP5819 Decal, ATX200 AP1159 O-ring AP5820 Decal, ATX50 AP5711 O-ring AP5805 Purge Button AP6577/S Adjusting Screw, ATX200 AP2020 Spring AP6577/1... - Page 17 Apeks ATX Second Stage Service Manual...
- Page 18 Authorized Technician TECHNICAL MAINTENANCE MANUAL ATX SECOND STAGE Aqua Lung America 2340 Cousteau Court, Vista CA 92083...
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