Aqua Lung APEKS TX 50 Technical Manual Download Page 22

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SYMPTOM

POSSIBLE CAUSE

TREATMENT

Leakage or freeflow from TX

Second Stage

1. Excessively high first-stage

intermediate pressure.

1. Refer to Table 1 - First Stage

Troubleshooting Guide.

2. MP Seat (29) damaged or worn.

2. Replace Rubber Seating.

3. Seat (18) adjusted incorrectly, Lever

(21) set too high.

3. Reset Seat preliminary

settings, and repeat Adjustment

Procedures.

4. Lever (21) bent.

4. Replace Lever.

5. Seat (18) sealing surface damaged.

5. Replace Valve Seat.

6. Valve Spring (26) damaged.

6. Replace Spring.

7. Shuttle Valve o-ring (27) damaged.

7. Replace o-ring.

8. Counter Balance Cylinder (25) bore

damaged.

8. Replace Counter Balance

cylinder.

Low purge or excessive work of

breathing (full cylinder)

1. Low first-stage intermediate

pressure.

1. Refer to first-stage

Troubleshooting Guide.

2. Seat (18) adjusted incorrectly, Lever

(21) set too low.

2. Reset Seat preliminary

settings, and repeat Adjustment

Procedures.

3. Intermediate pressure hose clogged

or obstructed.

3. Clean or replace Hose.

4. Lever (21) bent or catching on Valve

Spindle (20).

4. Replace Lever.

Water entering TX Second

Stage

1. Mouthpiece (14) damaged or incor-

rectly fitted.

1. Replace or re-fit Mouthpiece as

appropriate.

2. Diaphragm (9) damaged.

2. Replace Diaphragm.

3. Diaphragm (9) improperly seated in

Case (10).

3. Remove Front Cover (7) and

Diaphragm Cover (8) properly

reassemble Diaphragm (check

for distortion).

4. Exhaust Valve (11) damaged.

4. Replace Exhaust Valve.

5. Case (10) damaged. (Check exhaust

valve seating surface.)

5. Disassemble and replace Case.

6. Heat exchanger o-ring (3) damaged. 6. Replace o-ring

Table 2: Second Stage Troubleshooting Guide

TX50 Technical Manual

Summary of Contents for APEKS TX 50

Page 1: ...APEKS TX 50 Regulator TECHNICAL MANUAL REV 05 13 ...

Page 2: ...lated or reduced to any electronic medium or machine readable form without prior consent in writing from Aqua Lung International It may not be distributed through the internet or computer bulletin board systems without prior consent in writing fromAqua Lung International 2013 AQUA LUNG AMERICA TX 50 TECHNICAL MANUAL PN 100580 TX 50 with Yoke PN AP0500 TX 50 with DIN PN AP05001 You can contact a Te...

Page 3: ...Change No Date Title or description Change made by CHANGE RECORD 3 ...

Page 4: ...CEDURES 19 FINAL ASSEMBLY 20 FINAL TESTING PROCEDURES 20 TABLE 1 FIRST STAGE TROUBLESHOOTING GUIDE 21 TABLE 2 SECOND STAGE TROUBLESHOOTING GUIDE 22 TABLE 3 LIST OF TOOLS AND SERVICE KITS 23 TABLE 4 TORQUE SPECIFICATIONS 25 TABLE 5 TEST BENCH SPECIFICATIONS 25 TABLE 6 RECOMMENDED CLEANERS AND LUBRICANTS 26 TABLE 7 TX50 AS LISTED IN THE US NAVY AMU 26 PROCEDURE A CLEANING AND LUBRICATING 27 FIRST ST...

Page 5: ...If a regulator fails 5 6 7 or 8 it will be up to the technician s discretion whether or not a full overhaul is required General Guidelines 1 In order to correctly perform the procedures outlined in this manual it is important to follow each step exactly in the order given Read over the entire manual to become familiar with all procedures before attempting to disassemble the product in this manual ...

Page 6: ...ances regardless of the age of the regulator or how much use it has received since it was last serviced DISASSEMBLY PROCEDURES 1Using the appropriate sized open end wrench remove all the hoses from the first stage body Using the o ring removal tool PN 944022 remove the o ring from the male end of the hose and discard 3Install vice mounting tool PN 100395 into the open HP port 4Secure the vise moun...

Page 7: ...Insert a 6mm hex key into the end of the turret retaining bolt 15 and turn counter clockwise to remove Remove the spring 12 and HP valve 11 10Using the o ring removal tool PN 944022 remove the o ring 13 from the outside and o ring 17 from the inside of the turret retaining bolt 15 Discard both o rings 11Lift out the o ring 16 and blue thrust washer 14 from the top of the turret 8 Remove o ring 7 f...

Page 8: ...d discard This Concludes the Disassembly of the DST First Stage DIN Disassembly Before starting reassembly perform parts cleaning and lubrication in accordance with Procedure A Cleaning and Lubricating on page 27 DST First Stage Assembly 1Install the valve lifter 4 into the body 5 Seat the diaphragm 3 evenly into the body on top of the valve lifter 2Place the spring carrier 2 on top of the diaphra...

Page 9: ...urret 8 Place the o ring 16 on top of the blue washer 8Install the small o ring 17 into the turret bolt 15 Place the larger o ring 13 at the base of the threads 9Install the turret bolt 15 through the turret 8 Using a 6mm hex key tighten the turret bolt until snug 10With the first stage mounted in a bench vise use a torque wrench with a 6mm hex key adapter to tighten the turret bolt 15 to 70 in lb...

Page 10: ...tor 32 into the body until snug 5Thread a vise mounting tool into the first stage then install into a bench vise Using a torque wrench with a box wrench torque the yoke clamp connector 32 to 14 7 ft lbs 20 Nm 6Add o ring 29 to the dust cap Attach the dust cap 28 to the yoke clamp 27 by stretching it over the flange at the top of the yoke clamp Thread the yoke screw 30 into the yoke clamp Remove th...

Page 11: ... cause the hose to rupture when pressurized and could result in serious personal injury 4Thread the DIN connector upwards into the first stage body until snug 5Thread a vise mounting tool into the first stage then install into a bench vise Using a torque wrench with a 6mm hex key adapter torque the handwheel connector 34 to 14 7 ft lbs 20 Nm Remove the first stage from the bench vise and remove th...

Page 12: ...With the first stage still pressurized insert the hydrostatic transmitter 23 into the dry chamber and through the adjustment screw 22 2Install a new hydrostatic diaphragm 25 into the enviromental end cap 26 3Thread the end cap 26 onto the dry chamber until hand tight Using the pin spanner PN AT30 tighten the end cap until snug 4With the end cap in place recheck the MP to confirm there has been no ...

Page 13: ...ve the diaphragm cover 8 and diaphragm 9 from the case 10 Use an 11 16 inch open end wrench to remove the heat exchanger 2 from the case 6Turn the adjusting screw 23 out counter clockwise until it stops Hold the lever 21 down and slide the valve spindle 20 out of the case 10 Remove the valve spindle o ring 3 it might remain in the left side of the case 7Slide the venturi lever 16 out of the case R...

Page 14: ...emoved 13Insert the seat adjustment tool PN AT51 into the threaded end of the valve spindle 20 and turn the seat 18 out 6 7 turns counter clockwise Place the seat extraction tool into the opposite end of the valve spindle and push to remove the seat 14Remove the o ring 19 from the seat 18 and discard Closely inspect the sealing edge and o ring groove of the seat for damage If damage is found repla...

Page 15: ...cut the mouthpiece clamp 13 with side cutters and pull the mouthpiece 14 off the case 10 Inspect the mouthpiece for cuts holes or other damage replace if necessary This Concludes the Disassembly of the TX 50 Second Stage Before starting reassembly perform parts cleaning and lubrication in accordance with Procedure A Cleaning and Lubricating on page 27 1If the exhaust valve 11 was removed replace b...

Page 16: ... counter balance cylinder 25 Carefully guide the stem of the shuttle valve 28 through the spring and into the counter balance cylinder 7With the feet of the shuttle valve 28 pointing downward away from the lever and the lever 21 pointing straight up perpendicular to the valve spindle insert the valve assembly 25 29 into the valve spindle 20 Using your finger press the shuttle valve assembly all th...

Page 17: ...1 insert the valve spindle 20 through the venturi lever 16 and into the case 10 Be sure the valve spindle engages the two index flats molded into the case Gently release the lever 13Slide the o ring 3 down the threaded end of the valve spindle 20 Screw the heat exchanger 2 clockwise with the hexagon facing outward onto the valve spindle until hand tight Using a torque wrench with an 11 16 crow foo...

Page 18: ...n turn the seat counter clockwise until the lever is level with the case rim 16Position the diaphragm 9 into the case 10 Using your finger work the edges of the diaphragm into place so it sits evenly in the case Install the diaphragm cover 8 into the case over the diaphragm 17Place the small diameter end of the spring 6 onto the purge button 5 Orient the case cover 7 with the slotted openings poin...

Page 19: ... ADJUSTMENT PROCEDURES WARNING Compressed air can be highly explosive and is dangerous if misused Ensure cylinder valve is opened slowly Use Eye and Ear Personal Protective Equipment when performing any tests involving compressed air FINAL TESTING 1Using an in lb torque wrench with a 9 16 crow foot torque the MP hose to 40 in lbs 4 5 Nm to the first stage Install a properly adjusted second stage t...

Page 20: ...eshooting Guide p 22 1Depressurize the regulator and remove the in line ad justment tool from the MP hose and the second stage Thread the MP hose onto the second stage While holding the heat exchanger 2 stationary with an 11 16 open end wrench Use an in lb torque wrench and a 11 16 crow foot to torque the hose to 45 in lbs 5 Nm 2If equipped with a comfo bite mouthpiece 14 make sure the bridge of t...

Page 21: ...amaged 2 Replace diaphragm 3 Hydrostatic diaphragm 25 worn or damaged 3 Replace hydrostatic diaphragm 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 Cyl...

Page 22: ...e intermediate pressure 1 Refer to first stage Troubleshooting Guide 2 Seat 18 adjusted incorrectly Lever 21 set too low 2 Reset Seat preliminary settings and repeat Adjustment Procedures 3 Intermediate pressure hose clogged or obstructed 3 Clean or replace Hose 4 Lever 21 bent or catching on Valve Spindle 20 4 Replace Lever Water entering TX Second Stage 1 Mouthpiece 14 damaged or incor rectly fi...

Page 23: ...44388 9 16 x 5 8 Open End Combo Wrench 11 16 Disassembly and assembly N A Torque Wrench 30 120 in lbs Apply torque to parts listed in Table 3 Torque Specifications p 25 N A Torque Wrench 10 150 ft lbs Apply torque to parts listed in Table 3 Torque Specifications p 25 9 44363 Flex Wrench Disassembly and Assembly 9 43625 11 16 Crow Foot Apply torque to parts listed in Table 3 Torque Specifications p...

Page 24: ...valve 11 9 BA819009 Magnifier with Illumination Sealing surface inspection uses 2 ea AAA batteries N A Ultrasonic Cleaner Brass and stainless steel parts cleaning 8204 66 Christo Lube MCG 111 Lubrication AP0241 AA First Stage Service Kit Service Parts AP0219 AA Second Stage Service Kit Service Parts Table 3 List of Tools and Service Kits NOTE Actual tools may vary in appearance Tools subject to ch...

Page 25: ...0 3000 psig 206 bar 130 145 psi 9 10 bar MP Creep Inlet 2500 3000 psig 5 psi 0 25 bar max for 15 seconds after cycling purging regulator Second Stage PART DESCRIPTION KEY ITEM TORQUE AP5002 Heat Exchanger 2 26 6 in lbs 3 Nm AP0203 MP Hose 45 in lbs 5 Nm Table 4 Torque Specifications Second Stage TEST CONDITION SPECIFICATION Leak Test Inlet 2500 3000 psig 206 bar No leaks allowed MP Inlet 2500 3000...

Page 26: ...r Household grade CAUTION Silicone rubber requires no lubrication or preservative treatment DO NOT apply grease or spray to silicone rubber parts Doing so may cause a chemical breakdown and premature deterioration of the material CAUTION Do not use muriatic acid for the cleaning of any parts Even if strongly diluted muriatic acid can harm chrome plating and may leave a residue that is harmful to o...

Page 27: ...DO NOT place plastic rubber silicone or anodized aluminum parts in vinegar 3 Remove parts from the ultrasonic cleaner and rinse with fresh water If tap water is extremely hard place the parts in a bath of distilled water to prevent any mineral residue Agitate lightly and allow to soak for 5 10 minutes Remove and blow dry with low pressure 25 psi filtered air and inspect closely to ensure proper cl...

Page 28: ... 16 20 AP1445P O ring 10 pk 21 AP1473 Diaphragm Clamp 22 AP1474 Spring Adjuster 23 AP1483 Hydrostatic Transmitter NLA AP1477 Decal Pre 2013 24 AP1477F Decal 2013 25 AP1482 Hydrostatic Diaphragm 26 AP1484 Environmental End Cap 27 AP1403 Yoke Clamp 28 AP1404 Protective Cap 29 AP1166P O ring 10 pk NLA AP1402 Yoke Clamp Screw Satin Pre 2013 30 AP1402B Yoke Clamp Screw Chrome 2013 31 AP1406 Filter Whit...

Page 29: ...Tee 16 AP2039 Venturi Lever TX50 17 AP1151 Spring Pin 18 AP2033 Seat 19 AP1154P O Ring 10 pk 20 AP2028 Valve Spindle TX50 21 AP2035 Lever 22 AP2030 Plug 23 AP2029 Adjusting Screw TX50 24 AP1409P O Ring 10 pk 25 AP2038 Counter Balance Cylinder 26 AP2021 Valve Spring 27 AP2041P O Ring 10 pk 28 AP2036 Shuttle Valve 29 AP2034 MP Seat Hose Hose O rings not shown N S AP0203 Hose MP 1 2 X 29 N S AP1410P ...

Page 30: ...Maintenance Notes TX50 Technical Manual 30 ...

Page 31: ...Maintenance Notes 31 ...

Page 32: ...rature PN 100580 REV 05 13 APEKS TX50 REGULATOR TECHNICAL MANUAL 2340 Cousteau Court Vista CA 92081 Phone 760 597 5000 Fax 760 597 4900 www aqualung com militaryandprofessional 2013 Aqua Lung International ...

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