Apeks TX100 First Stage Service & Repair Manual for Authorized Sea Quest Service Centers ©2000 Sea Quest, Inc.
Contents Introduction .................................................................................................................................................... 3 Safety Precautions .......................................................................................................................................... 3 General Procedures ........................................................................................................................................
Apeks Regulator Service and Repair Manual INTRODUCTION Apeks regulators are the product of many years of research and development. Apeks has utilized proven materials and design to maximize reliability and performance. This manual is intended only as a guide for the experienced repair person that has completed a Sea Quest/ Apeks service and repair seminar. It is not intended to educate inexperienced repair personnel or the consumer in all aspects of Apeks regulator repair.
All chrome plated parts - Inspect for any excessive corrosion indicating weak or absent chrome plating. Also look for any signs of peeling or flaking of the chrome plating. ● Regulator pre-test - A regulator pre-test should include all tests outlined in the test section for each regulator. A pre-test will assist the technician in determining if there are any specific performance deficiencies not mentioned by the customer.
Apeks Regulator Service and Repair Manual 5 TABLE 1 RECOMMENDED TOOLS - TX100 FIRST STAGE Sea Quest Part No.
Apeks Regulator Service and Repair Manual 6 TABLE 2 LUBRICANT AND CLEANER Lubricant / Cleaner Recommended Type Application Source Christo-Lube MCG-111 All O-rings, threaded metal parts as indicated Lubrication Technologies 310 Morton Street Jackson, OH 45640 800-477-8704 Chemical Bath Solution Chromesafe Chrome-plated brass, brass, and stainless steel parts Sea Quest/ Aqua Lung America P/N 0201-05 50/50 mix distilled white vinegar and water Chrome-plated brass, brass, and stainless steel part
Apeks Regulator Service and Repair Manual DISASSEMBLY PROCEDURES 1. Before disassembling the first stage, remove the low pressure second stage hoses with a b" open-end wrench, and the low pressure inflator hose with a b" or 2" open-end wrench. Remove the high pressure hose with a s” open-end wrench, or the high pressure port plug with a 5mm hex key. Remove and discard the O-rings from the male fittings of each hose. 2.
Apeks Regulator Service and Repair Manual 8 DO NOT attempt to pry the diaphragm out of the valve body with a metal instrument. Doing so can permanently damage the seating shoulder, requiring replacement of the valve body. 10. Remove the valve lifter(10) from the body and set aside. Loosen the vise to turn the first stage over, and re-secure it so that the flat end (top) faces straight up. 11.
Apeks Regulator Service and Repair Manual 9 C. Remove and discard the O-ring(29) from the base of the yoke clamp connector. Stand the connector on a flat surface with the disc filter(31) facing down. Insert a 1/4” wooden or plastic dowel, and tap out the filter with a small mallet. 16. DISASSEMBLY OF DIN CONNECTOR Figure 7 Removing DIN Connector A. Remove the protective cap(32) from the threads of the handwheel(35).
Apeks Regulator Service and Repair Manual 10 CLEANING & INSPECTION PROCEDURES 1. All parts should be cleaned first in a warm (not over 120°F) mild soap and water solution. Use a soft nylon bristle brush to help remove any excess or loose contamination. After an initial warm water and soap cleaning all parts should be thoroughly rinsed in clean fresh water and dried with filtered low pressure (30 psig) air.
Apeks Regulator Service and Repair Manual 11 5. In addition to the O-rings, the following parts should be routinely replaced at the time of servicing: ● Diaphragm (9) ● HP Valve Seat (12) ● Hydrostatic Diaphragm (2) ● Disc Filter - Yoke Clamp Connector (31) ● Conical Filter - DIN Connector (36) All O-rings and the above mentioned routine replacement parts are included in the Overhaul Service Kit (P/N APO227). 6. The following parts should be closely inspected for the damage listed below.
Apeks Regulator Service and Repair Manual 12 REASSEMBLY PROCEDURES Before performing any reassembly, it is important to inspect NOTE all parts, both new and those that are being reused, to ensure that every part and component is perfectly clean and free of any dust, corrosion, or blemishes. Before dressing each Oring with Christo-Lube®, check to ensure it is clean, supple, and free of any blemish. Use only genuine Apeks parts, subassemblies, and components whenever assembling any Apeks product.
Apeks Regulator Service and Repair Manual Figure 9 Installing Yoke Clamp Assembly 13 9. REASSEMBLY OF YOKE CONNECTOR A. Lay a new disc filter(31) inside the yoke clamp connector(30), and press it firmly into place with the use of a wooden or plastic dowel, so that it is seated evenly on all sides. B. Install the O-ring(29) into the bottom of the yoke connector. C. Insert the yoke connector through the bottom of the yoke clamp(24).
Apeks Regulator Service and Repair Manual 14 16. Loosen the vice to remove the first stage, and remove the vise mounting tool. Install all O-rings(18, 20, 22) onto all hoses and port plugs(19, 21, 23). Install all LP and HP hoses and port plugs into the valve body, and tighten the port plugs clockwise until snug. Apply a torque wrench with respective crow foot to tighten each hose at the first stage fitting to a torque measurement of 40 (±5) inch-pounds. FINAL ADJUSTMENT AND TESTING PROCEDURES 1.
Apeks Regulator Service and Repair Manual 15 5. When the intermediate pressure has been determined to be stable at 120 psi or less, increase the inlet pressure to between 2,500 – 3,000 psi while checking the IP test gauge once again to ensure that the intermediate pressure does not rise above 135 psi. If the intermediate pressure rises above 135 psi, immediately purge the second stage, or re-open the bleed valve of the test gauge, and shut off the air supply.
Apeks Regulator Service and Repair Manual 16 TABLE 3 – TX100 FIRST STAGE TROUBLESHOOTING SYMPTOM Restricted airflow/ high inhalation resistance through entire system. High or unstable intermediate pressure Low intermediate pressure External air leakage (Immersion Test) -orhydrostatic diaphragm is abnormally distended or burst CAUSE ACTION REQUIRED 1. Cylinder valve not completely opened. 1. Open valve, check fill pressure. 2. Cylinder valve requires service. 2. Connect to a different cylinder.
Apeks Regulator Service and Repair Manual 17 REGULATOR REPAIR AND REPLACEMENT PARTS APEKS TX100 FIRST STAGE Item Description Part # Item Description Part # 1 Environmental End Cap AP1484/S 20 O-ring AP1410 2 Hydrostatic Diaphragm AP1482 21 1/2" UNF Blanking Plug AP1487 3 Decal AP1477 22 O-ring AP1409 4 Hydrostatic Transmitter AP1483 23 3/8" UNF Blanking Plug AP1408 5 Spring Adjuster AP1474 24 Yoke Clamp 6 Diaphragm Clamp AP1473 25 Protective Cap AP1404 7 Spring
Apeks Regulator Service and Repair Manual Apeks TX100 First Stage Schematic Drawing
