Apeks T20 First Stage
Contents
1. 14 Apeks Regulator Service and Repair Manual 14 Loosen the vise to turn the first stage over and re secure it so that the HP balance plug faces straight up Apply a torque wrench with 6mm hex key socket to tighten the balance plug to a torque measurement of 12 foot Ibs 15 Reposition the first stage inside the vice and secure it with the con nector Yoke or DIN facing straight up Apply a torque wrench with a 34 box wrench torque adapter Yoke or 6mm hex key socket DIN see Fig 11 Tighten the connector to 12 foot Ibs 16 Loosen the vice to remove the first stage and remove the vise mount ing tool Install all O rings 9 amp 18 onto all hoses and port plugs 8 amp 17 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 Torqueing Yoke Connector to a torque measurement of 40 5 inch pounds FINAL ADJUSTMENT AND TESTING PROCEDURES 1 Connect the intermediate pressure test gauge either to a quick dis connect inflator hose or to the female fitting of a second stage LP hose depending on the connection of the test gauge Check to ensure there are no open ports and that all hoses are securely connected at both ends with no open fittings Before testing intermediate pressure it is important to connect the first stage to a fully assembled and properly adjusted seco2. cleaning and testing Advise your customers to regularly inspect the inlet filter for any discoloration or corrosion e High pressure HP and low pressure LP hoses Inspect the hoses carefully for any evidence of cracking tearing or excessive abrasion of the outer rubber cover ing Remove all of the hose protectors and examine the area around the metal fittings for any damage to the hose Inspect the fittings for signs of excessive corrosion 4 Apeks Regulator Service and Repair Manual e All chrome plated parts Inspect for any excessive cor rosion indicating weak or absent chrome plating Also look for any signs of peeling or flaking of the chrome plating e 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 INFREQUENTLY USED REGULATORS Do not assume that the regulator is in good condition be cause of infrequent use or because it has been in storage Deterioration of the O rings and corrosion can still occur under these circumstances WORK AREA amp REQUIRED TOOLS Servicing and repair of the regulator should be carried out in a clean well lighted work area As each regulator is dis assembled all parts should be kept separate from parts of other regulators Some special tools are required for proper disassembly an
3. kac kuIE ducsusbvns covgustnentwstavwoswavansteusse Soosaare Lek Reassemibly of Yoke Connecter e iod qu eosdem it DOR od t P EUER HR QUE inden e ea ut 13 Roassembhy ot DIN Connectors deae deie nte tebe iacens a M Cue tu eto s Ero dft oe Neu D RU iis 13 Final Adjustment and Testing Procedures eee eee eee ee etes eee e ee een seen seen sees sn sse ssscessssceesssees 14 Table 3 Troubleshooting c e rre toe rese eo eate e yEbo eee ge teat bb paid ao dg eds consscesapuecedsebesaescsnessdstoosseaccoweanssonssecere LO Repair and Replacement Parts esee eee ea esee tee pets oa erae eese eosps epus r ux put Fes UE Ee Min excea trae aei vse do eus es e osbeda 7 Sch mati DD ra slit Mt ELE LO 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 experi enced 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 as pects of Apeks regulator repair Sea Quest Apeks repair seminars are available periodically to Authorized Sea Quest Dealers Servicing and repair at the repair shop level mainly involves cleaning inspection adjustment and re placement of worn parts If you have any
4. least once a year Under certain circumstances a complete ser vicing is required every 3 6 months Some of these cir cumstances are e Frequent or improper use e Inadequate routine freshwater rinsing e Regulator use in dirty or polluted waters e Rental use e Regular use in chlorinated pool water Recommended maintenance schedules are based on aver age use under normal conditions and assume that recom mended preventative maintenance and storage procedures have been followed as outlined in the Sea Quest Apeks owner s manuals Advise the customer that any adjustments or servicing on Sea Quest Apeks regulators must be performed by Sea Quest or by an Authorized Sea Quest Apeks Dealer that has attended a Sea Quest authorized service seminar INITIAL INSPECTION AND PRE TEST Prior to beginning the servicing of the regulator a pre liminary inspection and pre test of the entire breathing sys tem is recommended This will help the repair technician identify any problems that may affect the first stage Preliminary inspection should include e First stage inlet filter If the first stage inlet filter is discolored the entire regulator should be completely ser viced Deposits of rust red powder or aluminum oxide gray powder on the filter may indicate that water has entered the SCUBA cylinder and caused internal cylinder corrosion The customer should be notified that their SCUBA cylinder s may be in need of visual inspection
5. 14 Tightening Environmental End Cap tant to simultaneously purge the second stage or briefly turn the test gauge bleed valve open and shut Monitor the test gauge while ad justing in this manner until the intermediate pressure locks up be tween 115 120 psi Failure to cycle the regulator during adjustment can result in a false reading of the intermediate pressure 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 Refer directly to Table 3 Troubleshooting and remedy as needed Repeat the adjustment procedure in step 4 to adjust the first stage intermediate pressure to exactly 135 psi Repeatedly purge the sec ond stage or open and shut the test gauge bleed valve at least 15 times to ensure that the intermediate pressure locks up consistently and re mains stable at 135 5 psi with no signs of creeping or fluctuation After performing the overhaul and adjustment procedures outlined i n the Apeks Second Stage Service amp Repair Manual connect the first and second stage regulators to perform the following tests External Leak Test Con
6. B 69 95 0O
7. O ring and into the threaded end of the handwheel connector being careful to avoid pressing the filter too far past the O ring which will cause it to become unseated C Mate the handwheel connector through the threaded end of the handwheel 27 and place the distance piece 10 over the end of the connector with the flat surface held flush against the flat bot tom of the handwheel see Fig 9 D While holding the handwheel connector and distance piece to gether so that the curvature of the distance piece fits against the valve body mate the connector into the valve body and turn it clockwise by hand until snug 11 Install a vise mounting tool P N 1003 95 or a discharged CO car tridge P N 7039 09 connected to a HP port adapter P N 1020 85 into the HP port of the valve body 7 which is located near the serial number DO NOT use a CO cartridge that has not been discharged Doing so may cause the cartridge to rupture possibly resulting in serious injury 12 Secure the vise mounting tool inside a bench vise so that the first stage is positioned standing vertical outside the vice with the dia phragm cap facing up 13 Mate the pin of the spanner tool into the bore hole of the diaphragm cap While holding the spanner tool securely engaged to prevent it from slipping turn the diaphragm cap clockwise to tighten until it is completely snug and flush metal against metal with the valve body see Fig 10
8. While holding the spanner tool securely engaged to prevent it from slipping turn the diaphragm cap counter clockwise to loosen and remove from the valve body 7 along with the spring car rier 4 See Fig 2 Using a 5mm hex key install spare blanking plugs 8 into three of the four LP ports leaving the primary LP port open while the other ports are sealed Direct a short burst of low pressure 50 psi air through the primary LP port to partially dislodge the diaphragm 5 from the valve body see Fig 3 Lift out the diaphragm and discard Remove the blank ing plugs that were installed in the previous step DO NOT attempt to pry the diaphragm out of the valve body with a metal instrument Doing so will permanently damage the seating shoul der requiring replacement of the valve body Figure 3 9 Removing Diaphragm Remove the valve lifter 6 from the body and set aside Loosen the vise to turn the first stage over and re secure it so that the HP balance plug 16 faces straight up Apply a 6mm hex key to the HP balance plug and turn it counter clockwise to loosen until it has completely disengaged from the threads Apeks Regulator Service and Repair Manual of the valve body see Fig 4 Carefully lift out the balance plug along with the spring 12 and HP valve 11 10 Separate the spring and HP valve from the HP balance plug Discard the HP valve and closely examine the spring with the u
9. and gently tamp it down below the threads until it is seated evenly on all sides 3 Place the spring carrier 4 in the center of the diaphragm Mate the larger diameter threads of the diaphragm cap 6 onto the valve body and tighten the diaphragm cap clockwise by hand until snug 4 Place the spring 3 inside the center of the diaphragm cap so that it rests directly over the spring carrier 5 Mate the spring adjuster 1 into the center of the diaphragm cap directly over the spring Apply a 6mm hex key to turn the spring adjuster clockwise to its correct preliminary setting until itis set flush with the top of the diaphragm cap see Fig 7 6 Turnthe first stage over and carefully lower the sealing end of the HP valve 11 straight down over the pin of the valve lifter inside the high pressure side of the valve body 7 Install the small dynamic O ring 13 into the recess inside the small end of the HP balance plug and tamp it down with a non metallic instrument to ensure it is seated evenly on all sides Next install the Adjustment Screw Pre setting static O rings 14 amp 15 onto their respective grooves Figure 7 8 Fitthe spring 12 over the small end of the HP balance plug Then carefully mate the balance plug with spring straight down into the valve body over the stem of the HP valve Press down with the palm of one hand to compress the spring over the HP valve While main taining downward pressure turn the balance plug c
10. d reassembly Please see Table 1 page 5 for a list of these tools O RING REMOVAL When removing O rings care must be taken to not damage the regulator surfaces in contact with the O rings Tools used to remove O rings must not have any sharp edges or points that could scratch metal sealing surfaces Sea Quest strongly recommends that all O ring removal tools should be made of either brass or plastic LUBRICATION O rings should be lubricated with an approved compound please refer to Table 2 for proper lubricants O rings should be lubricated only with a very light film of grease Do not use spray aerosol lubricants under any circumstances The aerosol propellant may damage the plastic and rubber com ponents of the regulator and the lubricant will quickly evaporate providing little or no lasting benefit Do not use any petroleum based lubricants or products or any aerosol sprays to lubricate or clean any part or component of Apeks regulators The petroleum base or propellant gas may attack or weaken the plastic or rubber parts Refer to Table 2 for approved lubricants Apeks regulators are intended for use in water tempera tures warmer than 45 F 7 C Colder water may cause regulators to be more sensitive to a freeflow condition and can lead to a situation that requires an appropriate response to prevent serious injury or death Users of Sea Quest regulators are advised to ensure that they are adequa
11. est regulators The petroleum base or propellant gas may attack or weaken plastic or rubber parts Refer to Table 2 for a list of approved lubricants 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 e Diaphragm 5 e HP Valve Seat 11 e Disc Filter Yoke Clamp Connector 31 e Conical Filter DIN Connector 26 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 Close inspection is best accomplished by using strong magni fication under bright lighting Valve Body 7 Inspect all cavities for any nicks scratches pitting or any defects in the plating Pay particular attention to the sealing edge of the valve cone and the diaphragm seating shoulder Springs 3 amp 12 Inspect for signs of permanent corrosion including pitting or cracks in the surface of the metal HP Balance Plug 16 Inspect the interior cavity for any nicks scratches pitting or any defects in the plating DIN or Yoke Connector 28 or 32 Examine the condition of the threads and the O ring sealing groove at the base for any signs of damage DIN Handwheel 27 Examine the condition of the threads for any signs of damage 7 If any of the listed parts show any damage th
12. ey must be replaced with new 8 Check all metal parts for excessive wear or corrosion Check all metal sealing surfaces which make contact with O rings for any signs of contamination and or imperfections that may cause leakage past the O ring seal Examine all chrome plated surfaces for any evidence of peeling or flaking of the chrome plating Inspect all threads for gall ing cross threading or damage to the chrome plating If any parts show damage or excessive wear they must be replaced with new 12 Apeks Regulator Service and Repair Manual REASSEMBLY PROCEDURES 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 O ring with Christo Lube check to ensure it is clean supple and free of any blemish Use only genuine Apeks parts subassemblies and components when ever assembling any Apeks product DO NOT attempt to substitute an Apeks part with another manufacturer s regardless of any similarity in shape size or appearance Doing so may render the product unsafe and could result in serious injury or death 2 Before performing any reassembly it is important to inspect all 1 Insert the stem of the valve lifter 6 into the center bore hole inside the low pressure side of the valve body 7 2 Lay the diaphragm 5 over the valve lifter inside the valve body
13. h entire system Cylinder valve requires service Disc filter 31 is contaminated Insufficient intermediate pressure ACTION REQUIRED Open valve check fill pressure Connect to a different cylinder Replace with new See below High or unstable intermediate First stage improperly adjusted pressure HP valve seat 11 damaged or worn HP balance plug O ring 16 damaged or worn HP balance plug 16 damaged Sealing surface of HP valve body 7 damaged Valve spring 12 weakened or damaged Readjust spring adjuster 1 Replace HP valve seat Replace O ring Replace with new Replace with new Replace with new Low intermediate pressure First stage improperly adjusted Main spring 3 damaged Diaphragm cap 2 loose Readjust spring adjuster 1 Replace with new Tighten flush with valve body External air leakage Diaphragm cap 2 loose Immersion Test Diaphragm 5 worn or damaged Diaphragm seating surface inside first stage valve body 7 damaged HP balance plug O ring 14 or 15 damaged 4 Tighten flush with valve body Replace diaphragm Replace with new Replace with new a Sea Quest Technical Advisor Recommended treatments which require disassembly of the regulator must be performed during a complete overhaul according to the prescribed procedures for scheduled annual service Do not atte
14. he low pressure second stage hoses with a 6 open end wrench and the low pressure infla tor hose with a 6 or 1 2 open end wrench Remove the high pres sure hose with a 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 Install a vise mounting tool P N 1003 95 or a discharged CO car tridge P N 7039 09 connected to a HP port adapter P N 1020 85 into the HP port of the valve body 7 which is located near the serial DO NOT use a CO cartridge that has not been discharged Doing so may cause the cartridge to rupture possibly resulting in serious injury number Figure 1 Removing Spring Adjuster Figure 2 7 Removing Diaphragm Cap Secure the vise mounting tool inside a bench vise so that the first stage is positioned standing vertical outside the vice with the dia phragm cap 2 facing up Apply a 6mm hex key to the spring adjuster 1 in the center of the diaphragm cap and turn the spring adjuster counter clockwise to loosen and remove see Fig 1 Lift out the spring 3 and examine it closely with the use of a magnifier to check for any signs of pitting rusting or other corrosion that permeates the surface of the metal Set the spring aside if it is found to be in reusable condition or re place with new as needed Mate the pin of the spanner tool P N AT30 into the bore hole of the diaphragm cap
15. id dishwashing detergent diluted with warm water TABLE 2 LUBRICANT AND CLEANER Recommended Type MCG 111 Chromesafe 50 50 mix distilled white vinegar and water Joy Application All O rings threaded metal parts as indicated Chrome plated brass brass and stainless steel parts Chrome plated brass brass and stainless steel parts General cleaning solution degreaser for plastic and rubber parts leak detection Source Lubrication Technologies 310 Morton Street Jackson OH 45640 800 477 8704 Sea Quest Aqua Lung America P N 0201 05 Local grocery stores Local grocery stores DO NOT use muriatic acid for the cleaning of any parts Muriatic acid even when strongly diluted can harm chrome plating and may leave a residue that is harmful to O ring seals and other parts Aerosol spray silicone should be avoided because 1 common aerosol propellants may attack plastic and rubber parts and 2 because only a slight amount of silicone remains after the solvent evapo rates and provides no lasting benefit tion of the material Silicone rubber requires no lubrication or preservative treatment DO NOT apply silicone grease or spray to silicone rubber parts Doing so will cause a chemical breakdown and premature deteriora Apeks Regulator Service and Repair Manual DISASSEMBLY PROCEDURES l Before disassembling the first stage remove t
16. lockwise to en gage the threads of the valve body and then continue turning by hand until it is lightly snug Apeks Regulator Service and Repair Manual 13 Figure 8 Installing Yoke Clamp Assembly Figure 9 Installing DIN Connector Assembly Figure 10 Tightening Diaphragm Cap 9 REASSEMBLY OF YOKE CONNECTOR A Lay a new disc filter 31 inside the yoke clamp connector 32 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 33 into the recess at the base of the yoke clamp connector C Insert the yoke clamp connector through the bottom of the yoke clamp 34 and place the distance piece 10 over the end of the connector with the flat surface held flush against the flat bottom of the yoke clamp see Fig 8 D While holding the yoke clamp connector and distance piece to gether so that the curvature of the distance piece fits against the valve body mate the connector into the valve body and turn it clockwise by hand until snug E Install a new spare O ring 36 onto the protective cap 35 and fit the loop end onto the groove at the top of the yoke clamp Install the yoke clamp screw 37 into the yoke clamp but do not seal the protective cap at this time REASSEMBLY OF DIN CONNECTOR A Install both O rings 25 amp 29 onto the handwheel connector 28 B Insert the small end of the conical filter 26 through the small
17. mical bath solution of Chromesafe see Lubricant and Cleaner Table 2 and agitating gently for 3 4 min utes Cleaning of metal parts can also be done by soaking in a mild acetic solution distilled white household vinegar for 10 15 minutes plated parts Never clean parts for longer than specified by the manufacturer of the solution used After completion of clean ing in any solution thoroughly rinse parts with clean fresh water and blow dry with low pressure 30 psig air Only brass plated brass and stainless steel parts should be immersed in chemi cal cleaning solutions Use hand and eye protection when handling chemical cleaning solu tions o Cleaning times in excess of those recommended may damage 3 After cleaning all parts should be thoroughly rinsed in fresh water and dried with filtered low pressure 30 psig air parts both new and those that are being reused to ensure that each part is clean and free of any contamination corrosion or blemish o Before performing any reassembly it is important to inspect all 4 All O rings should be replaced at every servicing New O rings should be inspected for contamination and or imperfections and lightly dressed with a thin film of approved lubricant prior to installation See Lubricant and Cleaner Table 2 Do not use any petroleum based lubricants or products or any aerosol silicone sprays on any part of Sea Qu
18. move all remaining blanking plugs and remove and dis card their O rings 16 Under adequate lighting and magnification closely inspect the con dition of the sealing crown inside the valve body to check for any scratches corrosion or other signs of damage damaged and a persistent intermediate pressure leak was de tected prior to disassembly it may be necessary to replace the valve body with new NOTE If the sealing crown of the valve body appears to be This concludes the disassembly procedures 10 Apeks Regulator Service and Repair Manual CLEANING amp INSPECTION 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 After an initial cleaning in warm soap and water solution metal parts should be cleaned in an ultrasonic cleaner using the appropriate ultrasonic clean ing solution see Lubricant and Cleaner Table 2 moved before cleaning in an ultrasonic cleaner or chemical bath o Be sure all O rings and other rubber or plastic parts are re Cleaning solutions may damage these components 2 Ifan ultrasonic cleaner is not available metal parts can be cleaned by soaking the metal parts in a che
19. mpt to perform partial service For assistance with a problem not described here contact Apeks Regulator Service and Repair Manual 17 REGULATOR REPAIR AND REPLACEMENT PARTS APEKS T20 FIRST STAGE Item Description Part Description Part 1 Spring Adjuster AP1474 21 Hydrostatic Transmitter AP1483 2 Diaphragm Cap AP1485 22 1st Stage Decal AP1477 3 Spring AP1475 23 Hydrostatic Diaphragm AP1482 4 Spring Carrier AP1476 24 Environmental Cap AP1484 5 Diaphragm AP1478 25 O ring AP1409 6 Valve Lifter AP1479 26 Conical Filter AP1472 7 Valve Body US1 amp DS1 AP5200 27 Handwheel AP1470 Valve Body DS1 amp DS4 AP5201 28 Connector AP1471 8 7 16 Blanking Plug AP1413 29 O ring AP1166 9 O ring AP1445 30 Protective Cap AP1264 10 Distance Piece AP1446 31 Disc Filter AP1406 11 HP Valve AP1419 32 Yoke Clamp Connector AP1407 12 Spring AP1415 33 O ring AP1409 13 O ring AP1299 34 Yoke Clamp AP1403 14 O ring AP1410 35 Protective Cap AP1404 15 O ring AP1300 36 O ring AP1166 16 HP Balance Plug AP5202 37 Yoke Clamp Screw AP1400 17 Blanking Plugs US4 amp DS4 AP1408 38 Decal AP5015 18 O rings US4 amp DS4 AP1409 19 Diaphragm Clamp AP1473 n s Overhaul Service Kit Yoke APO227 20 Spring Adjuster AP1474 n s Overhaul Service Kit DIN APO227 1 NOTE Items in bold are included in the Overhaul Service Kit 18 Apeks Regulator Service and Repair Manual Apeks T2O First Stage Schematic Drawing NO j WETP
20. nd stage This will provide a safety relief valve if the intermediate pressure exceeds 155 170 psi If a properly adjusted second stage is not available be sure to open the bleed valve of the test gauge before pressurizing Fail ure to relieve intermediate pressure in excess of 400 psi may result in damage to the test gauge or LP hose 2 Check to ensure that the first stage spring adjuster 1 is correctly set to its preliminary adjustment exactly flush with the top of the dia phragm cap 2 See Fig 12 3 Connect the first stage to a filtered air source of 500 psi and slowly pressurize the first stage While closely monitoring the IP test gauge to ensure that the intermediate pressure does not rise above 120 psi slowly turn the knob of the bleed valve clockwise until it is com pletely shut A caution If a second stage is not connected to the first stage and the intermedi ate pressure rises above 200 psi immediately reopen the bleed valve of Figure 12 the test gauge and shut off the air supply Refer directly to Table 3 Adjustment Screw Pre setting Troubleshooting and remedy as needed before proceeding further 4 When the intermediate pressure has stabilized below 120 psi apply a 6mm hex key to turn the spring adjuster clockwise in small incre ments of adjustment While turning the spring adjuster it is impor Apeks Regulator Service and Repair Manual 15 Figure
21. nect the regulator to a cylinder which con tains 2 500 3 000 psi and open the cylinder valve to pressurize the system Submerge the cylinder and regulator in a test tank of fres h water and observe closely for up to one minute to check for the for mation of bubbles If a steady stream of bubbles is present the sys tem must be disassembled at the source to check sealing surfaces assembly sequence and component positioning in order to correct the problem s lator thoroughly with fresh water and blow out all residual mois ture with filtered low pressure 30 psi air Disassemble and remedy the problem referring to Table 3 Troubleshooting Before disassembling to correct any leaks rinse the entire regu 9 Subjective Breathing Test Depress the second stage purge to ensure that the volume of airflow is adequate to clear the second stage Then breathe deeply from the mouthpiece A properly serviced and ad justed regulator should deliver a smooth uninterrupted airflow upon deep inhalation without excessive effort hesitation or freeflow If any problems occur refer to Table 3 Troubleshooting This concludes the annual service procedures for The Apeks T20 First Stage Regulator 16 Apeks Regulator Service and Repair Manual TABLE 3 T20 FIRST STAGE TROUBLESHOOTING SYMPTOM Restricted airflow high in 1 Cylinder valve not completely opened halation resistance throug
22. questions on any of the procedures in spections or tests please contact Sea Quest at 877 253 3483 SAFETY PRECAUTIONS This manual provides step by step instructions for the dis assembly inspection cleaning reassembly and testing of the Apeks T20 first stage regulator It is recommended that all steps are followed in the order given Read each section completely PRIOR to beginning work described in that section This will familiarize the repair technician with important precautions to take during each service pro cedure Pay close attention to all WARNINGS CAUTIONS and NOTES that are intended to draw your attention to items of importance Definition of Warnings Cautions and Notes Indicates a procedure or situation that may result in serious injury or death for either the technician or the user if instructions are not followed correctly Indicates any situation or technique that may result in potential damage to the product or render the product unsafe if instructions are not followed cor rectly Nore Is used to emphasize important points and tips GENERAL PROCEDURES MAINTENANCE SCHEDULES Regulators are subjected to a variety of environmental el ements that over time can affect the performance of the product As an Authorized Sea Quest Apeks Dealer you are advised to inform your staff and customer that Sea Quest Apeks regulator require complete servicing at
23. rate these items and set the clamp aside Figure 5 Removing Yoke Connector A CAUTION CAUTION It is important that the wrench is securely seated over the entire hex surface of the yoke clamp connector to prevent any damage to the part Do not use impact to loosen C Remove and discard the O ring 33 from the base of the yoke clamp connector Stand the connector on a flat surface with the disc filter 31 facing down Insert a 14 wooden or plastic dowel and tap out the filter with a small mallet 14 DISASSEMBLY OF DIN CONNECTOR A Remove the protective cap 30 from the threads of the handwheel 27 Apply a 6mm hex key to the hand wheel con nector 28 and turn it counter clockwise to loosen and remove 7 Figure 6 see Fig 6 Removing DIN Connector Apeks Regulator Service and Repair Manual B Remove both O rings 25 amp 29 and the conical filter 26 from the handwheel connector Discard these items and do not reuse Closely inspect the condition of the handwheel connector includ ing the thread and the sealing areas of both O rings Replace the part if any damage is found or set it aside to be reused C Closely inspect the threads of the handwheel to ensure they are free of any burrs or other damage that could prevent proper thread ing Replace the part if damage is found or set it aside to be reused 15 Loosen the vice to remove the valve body and remove the vise mount ing tool Re
24. se of a mag nifier to check for any signs of pitting rusting or other corrosion that permeates the surface of the metal Set the spring aside if it is found to be in reusable condition or replace with new as needed 11 Remove and discard both of the static O rings 14 amp 15 from the HP balance plug and also the small dynamic O ring 13 that is held in side the opening Figure 4 A caution Removing HP Balance Plug Use only a brass or plastic O ring tool when removing O rings from the HP balance plug Use of asharp steel instrument can easily scratch the O ring sealing surface which will result in a permanent leak that will require replacement of the part 12 Reposition the valve body inside the vice and secure it with the con nector Yoke or DIN facing straight up figured with a DIN or yoke connection and refer to the appro o Before proceeding determine whether the first stage is con priate disassembly procedure provided below 13 DISASSEMBLY OF YOKE CONNECTOR A Remove the yoke screw 37 from the yoke clamp 34 and re move the protective cap 35 Examine the condition of the spare O ring 36 and replace as needed B Apply a 4 box wrench to the yoke clamp connector 32 Using firm steady force turn the connector counter clockwise to loosen and remove from the valve body and yoke clamp see Fig 5 Lift the connector and clamp straight off the valve body Sepa
25. sealJuest Apeks T20 First Stage Service amp Repair Manual for Authorized Sea Quest Service Centers 2000 Sea Quest Inc Contents n Howto MES SEITAN KA ilL S General Procedures ioi iacet eesees eese sede ee nd se n e doe zo coe ea see tage o Ee sene or eee dee aod eode ineo dese cole send Ua Dead ee sodio esso eode ossis D M inten nee SOHC CULES adsecutus h a el onc tias iu d post aea e a es ana e 3 Initial Inspection and Pre Test ue eo e pn Sek enc tee e ban ted e E S S 3 Infrequently Used Regulators a desee e aee tte mE tote bats Adesso ete tat AUN bees 4 Work Area amp Reguired TOONS oo RU er Pretty texere dr tete ad tee dee tepida cua 4 CE Removal eset temm ite sete andis aera toc Con dts aed nus reote O ENE 4 Ls DHcaton coc eoru M M LEM E n M M M E Cm 4 Table 1 Recommended Tools eere eee eee eee ee ee ee eese sent sn sese teet eese sonas sete eeeeee esas e ee eeeese senses ee eeeeee senno D Table 2 Lubricant and Cleaner eee ee esee eese ee eese aene nn en sete esee se sssssa sese esee se ssssss sese eeeesesssssssseeeeeeeeesssssss O Disassembly Procedures ye EL LT ES EU LT UTE Disassembly of Yoke Connector ep etie Ue eR Ie heaping EUN edat esee daa Ne awa 8 Disassembly of DIN Comme ctor opa eese ted enco endi i eee c pev e ae dup y ee RR eg 8 Cleanins adlitjdur m E M mI L Reassembly PrOCGedllFOS ne eee Sao Into h et Sce OU Reo NRN SE ies qu oeko aba
26. tely trained to deal with a regulator in a freeflow condition or an out of air emergency before attempting to dive in a cold water environment Apeks Regulator Service and Repair Manual Sea Quest Part No N A TABLE 1 RECOMMENDED TOOLS Description Padded bench vise Application Assembly and disassembly of first stage 1003 95 Vise mounting tool Assembly and disassembly of first stage AT30 Pin Spanner Wrench Removal installation of diaphragm cap N A 1 4 wood or plastic dowel Removal of disc filter N A 1 2 wood or plastic dowel Installation of disc filter N A omm hex key amp hex key socket Removal installation of blanking plugs N A 6mm hex key amp hex key socket Removal installation of spring adjuster N A 3 4 box wrench torque adapter Installation of yoke clamp connector N A 0 120 inch lbs torque wrench Small fittings N A 10 50 foot Ibs torque wrench Large fittings 1116 10 P test gauge Intermediate pressure testing 9440 22 O ring tools O ring removal amp installation 41532 LP air nozzle Parts drying N A Magnifier w illumination Sealing surface inspection N A Ultrasonic cleaner 60HZ 1 3 amp Brass amp stainless steel parts cleaning Apeks Regulator Service and Repair Manual Lubricant Cleaner Christo Lube Chemical Bath Solution Liqu
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